init

buntspecht-backend/.gitignore

@@ -0,0 +1,11 @@
+bin/
+target/
+.settings/
+.project
+.classpath
+hs_err*.log
+application.properties
+usernames.txt
+lucene
+
+.vscode

buntspecht-backend/pom.xml

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>de.champonthis</groupId>
+	<artifactId>buntspecht</artifactId>
+	<version>${revision}</version>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>17</java.version>
+		<querydsl.version>5.1.0</querydsl.version>
+		<revision>0.1.0</revision>
+	</properties>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.3.4</version>
+		<relativePath />
+	</parent>
+
+	<dependencies>
+		<!-- Spring -->
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-security</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-webflux</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-mail</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.session</groupId>
+			<artifactId>spring-session-jdbc</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-oauth2-client</artifactId>
+		</dependency>
+
+		<!-- Query DSL -->
+		<dependency>
+			<groupId>com.querydsl</groupId>
+			<artifactId>querydsl-apt</artifactId>
+			<version>${querydsl.version}</version>
+			<classifier>jakarta</classifier>
+		</dependency>
+
+		<dependency>
+			<groupId>com.querydsl</groupId>
+			<artifactId>querydsl-jpa</artifactId>
+			<version>${querydsl.version}</version>
+			<classifier>jakarta</classifier>
+		</dependency>
+
+		<!-- Utils -->
+		<dependency>
+			<groupId>commons-validator</groupId>
+			<artifactId>commons-validator</artifactId>
+			<version>1.9.0</version>
+		</dependency>
+
+		<dependency>
+			<groupId>com.google.code.gson</groupId>
+			<artifactId>gson</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>commons-lang3</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.bouncycastle</groupId>
+			<artifactId>bcprov-jdk18on</artifactId>
+			<version>1.78.1</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.passay</groupId>
+			<artifactId>passay</artifactId>
+			<version>1.6.5</version>
+		</dependency>
+
+		<!-- Datbase -->
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<configuration>
+					<mainClass>de.champonthis.buntspecht.Application</mainClass>
+					<finalName>buntspecht</finalName>
+					<executable>true</executable>
+					<layout>ZIP</layout>
+				</configuration>
+				<executions>
+					<execution>
+						<id>build-info</id>
+						<goals>
+							<goal>build-info</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+</project>

buntspecht-backend/src/main/java/de/champonthis/buntspecht/Application.java

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+package de.champonthis.buntspecht;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
+
+
+@SpringBootApplication
+public class Application extends SpringBootServletInitializer {
+
+	
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/JPAConfig.java

@@ -0,0 +1,24 @@
+package de.champonthis.buntspecht;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+
+import com.querydsl.jpa.impl.JPAQueryFactory;
+
+import jakarta.persistence.EntityManager;
+
+@Configuration
+@EnableJpaAuditing
+public class JPAConfig {
+
+	@Autowired
+	private EntityManager em;
+
+	@Bean
+	public JPAQueryFactory jpaQueryFactory() {
+		return new JPAQueryFactory(em);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/businesslogic/SystemPropertyManager.java

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+package de.champonthis.buntspecht.businesslogic;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+
+import de.champonthis.buntspecht.model.SystemProperty;
+import de.champonthis.buntspecht.repository.SystemPropertyRepository;
+
+@Component
+public class SystemPropertyManager {
+
+	@Autowired
+	private SystemPropertyRepository systemPropertyRepository;
+
+	public boolean has(String key) {
+		return systemPropertyRepository.existsById(key);
+	}
+
+	public String get(String key) {
+		return systemPropertyRepository.findById(key).orElse(new SystemProperty()).getValue();
+	}
+
+	public String get(String key, String defaultValue) {
+		return systemPropertyRepository.findById(key).orElse(new SystemProperty(key, defaultValue)).getValue();
+	}
+
+	public boolean getBoolean(String key) {
+		return getBoolean(key, false);
+	}
+
+	public boolean getBoolean(String key, boolean defaultValue) {
+		return Boolean.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	public int getInteger(String key) {
+		return getInteger(key, 0);
+	}
+
+	public int getInteger(String key, int defaultValue) {
+		return Integer.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	public long getLong(String key) {
+		return getLong(key, 0L);
+	}
+
+	public long getLong(String key, long defaultValue) {
+		return Long.valueOf(get(key, String.valueOf(defaultValue)));
+	}
+
+	public void add(String key, String value) {
+		Assert.isTrue(!systemPropertyRepository.existsById(key),
+				"System Property already exists, use update method to change value!");
+		systemPropertyRepository.save(new SystemProperty(key, value));
+	}
+
+	public void update(String key, String value) {
+		Assert.isTrue(systemPropertyRepository.existsById(key),
+				"System Property does not exists, use add method to add new!");
+		SystemProperty systemProperty = systemPropertyRepository.findById(key).get();
+		systemProperty.setValue(value);
+		systemPropertyRepository.save(systemProperty);
+	}
+
+	public void set(String key, String value) {
+		if (systemPropertyRepository.existsById(key)) {
+			update(key, value);
+		} else {
+			add(key, value);
+		}
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/businesslogic/TurnoverManager.java

@@ -0,0 +1,191 @@
+package de.champonthis.buntspecht.businesslogic;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+
+import com.querydsl.core.BooleanBuilder;
+import com.querydsl.core.QueryResults;
+import com.querydsl.core.Tuple;
+import com.querydsl.core.types.Order;
+import com.querydsl.core.types.OrderSpecifier;
+import com.querydsl.core.types.Path;
+import com.querydsl.core.types.Predicate;
+import com.querydsl.jpa.impl.JPAQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+
+import de.champonthis.buntspecht.controller.model.TurnoverFilterModel;
+import de.champonthis.buntspecht.model.QTurnover;
+import de.champonthis.buntspecht.model.Turnover;
+import de.champonthis.buntspecht.repository.TurnoverRepository;
+
+@Service
+public class TurnoverManager {
+
+	@Autowired
+	private TurnoverRepository turnoverRepository;
+	@Autowired
+	private JPAQueryFactory jpaQueryFactory;
+
+	private QTurnover qTurnover = QTurnover.turnover;
+
+	public QueryResults<Turnover> fetch(long limit, long offset, String sortBy, boolean descending,
+			TurnoverFilterModel filter) {
+		return fetch(null, limit, offset, sortBy, descending, filter);
+	}
+
+	public QueryResults<Turnover> fetch(String username, long limit, long offset, String sortBy, boolean descending,
+			TurnoverFilterModel filter) {
+		BooleanBuilder builder = new BooleanBuilder();
+
+		if (StringUtils.hasText(username)) {
+			builder.and(qTurnover.username.eq(username));
+		}
+
+		builder.and(buildFilter(filter));
+
+		JPAQuery<Turnover> query = jpaQueryFactory.from(qTurnover).where(builder.getValue()).select(qTurnover);
+		Long total = query.clone().select(qTurnover.id.countDistinct()).fetchOne();
+
+		if (StringUtils.hasText(sortBy)) {
+			Path<? extends Comparable<?>> path = null;
+			switch (sortBy) {
+				case "created":
+					path = qTurnover.created;
+					break;
+				case "updated":
+					path = qTurnover.updated;
+					break;
+				case "customer":
+					path = qTurnover.customer;
+					break;
+				case "price":
+					path = qTurnover.price;
+					break;
+				case "timeInvestment":
+					path = qTurnover.timeInvestment;
+					break;
+			}
+			if (path != null) {
+				query.orderBy(new OrderSpecifier<>(descending ? Order.DESC : Order.ASC, path));
+			}
+		}
+
+		List<Turnover> result = query.limit(limit).offset(offset).fetch();
+		return new QueryResults<Turnover>(result, limit, offset, total == null ? 0L : total);
+
+	}
+
+	protected Predicate buildFilter(TurnoverFilterModel filter) {
+		BooleanBuilder builder = new BooleanBuilder();
+
+		if (filter != null) {
+			if (filter.getCreated() != null) {
+				if (filter.getCreated().getMin() != null) {
+					builder.and(qTurnover.created.after(filter.getCreated().getMin()));
+				}
+				if (filter.getCreated().getMax() != null) {
+					builder.and(qTurnover.created.before(filter.getCreated().getMax()));
+				}
+			}
+			if (filter.getUpdated() != null) {
+				if (filter.getUpdated().getMin() != null) {
+					builder.and(qTurnover.updated.after(filter.getUpdated().getMin()));
+				}
+				if (filter.getUpdated().getMax() != null) {
+					builder.and(qTurnover.updated.before(filter.getUpdated().getMax()));
+				}
+			}
+			if (filter.getCustomer() != null) {
+				builder.and(qTurnover.customer.contains(filter.getCustomer()));
+			}
+			if (filter.getMotif() != null) {
+				builder.and(qTurnover.motif.contains(filter.getMotif()));
+			}
+			if (filter.getPrice() != null) {
+				if (filter.getPrice().getMin() != null) {
+					builder.and(qTurnover.price.goe(filter.getPrice().getMin()));
+				}
+				if (filter.getPrice().getMax() != null) {
+					builder.and(qTurnover.price.loe(filter.getPrice().getMax()));
+				}
+			}
+			if (filter.getTimeInvestment() != null) {
+				if (filter.getTimeInvestment().getMin() != null) {
+					builder.and(qTurnover.timeInvestment.goe(filter.getTimeInvestment().getMin()));
+				}
+				if (filter.getTimeInvestment().getMax() != null) {
+					builder.and(qTurnover.timeInvestment.loe(filter.getTimeInvestment().getMax()));
+				}
+			}
+		}
+
+		return builder.getValue();
+	}
+
+	public Turnover get(Long id) {
+		return turnoverRepository.findById(id).orElse(null);
+	}
+
+	public Turnover save(Turnover turnover) {
+		return turnoverRepository.save(turnover);
+	}
+
+	public boolean exists(Long id) {
+		return turnoverRepository.existsById(id);
+	}
+
+	public void delete(Turnover turnover) {
+		turnoverRepository.delete(turnover);
+	}
+
+	public void deleteById(Long id) {
+		turnoverRepository.deleteById(id);
+	}
+
+	public void deleteByUsername(String username) {
+		turnoverRepository.deleteAllInBatch(turnoverRepository.findAll(qTurnover.username.eq(username)));
+	}
+
+	public QueryResults<Tuple> overview(String username, long limit, long offset, String sortBy, boolean descending,
+			TurnoverFilterModel filter) {
+		BooleanBuilder builder = new BooleanBuilder();
+
+		if (StringUtils.hasText(username)) {
+			builder.and(qTurnover.username.eq(username));
+		}
+
+		builder.and(buildFilter(filter));
+
+		JPAQuery<Tuple> query = jpaQueryFactory.from(qTurnover).where(builder.getValue()).groupBy(qTurnover.username)
+				.select(qTurnover.username.as("username"), qTurnover.price.sum().as("price"),
+						qTurnover.timeInvestment.sum().as("timeInvestment"));
+		Long total = query.clone().select(qTurnover.username.countDistinct()).fetchOne();
+
+		if (StringUtils.hasText(sortBy)) {
+			Path<? extends Comparable<?>> path = null;
+			switch (sortBy) {
+				case "username":
+					path = qTurnover.username;
+					break;
+				case "price":
+					path = qTurnover.price;
+					break;
+				case "timeInvestment":
+					path = qTurnover.timeInvestment;
+					break;
+			}
+			if (path != null) {
+				query.orderBy(new OrderSpecifier<>(descending ? Order.DESC : Order.ASC, path));
+			}
+		}
+
+		List<Tuple> result = query.limit(limit).offset(offset)
+				.fetch();
+
+		return new QueryResults<Tuple>(result, limit, offset, total == null ? 0L : total);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/businesslogic/UserManager.java

@@ -0,0 +1,211 @@
+package de.champonthis.buntspecht.businesslogic;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.SmartInitializingSingleton;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
+import org.springframework.stereotype.Service;
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+import com.querydsl.core.BooleanBuilder;
+import com.querydsl.core.QueryResults;
+import com.querydsl.core.types.Order;
+import com.querydsl.core.types.OrderSpecifier;
+import com.querydsl.core.types.Path;
+import com.querydsl.jpa.impl.JPAQuery;
+import com.querydsl.jpa.impl.JPAQueryFactory;
+
+import de.champonthis.buntspecht.model.QUser;
+import de.champonthis.buntspecht.model.User;
+import de.champonthis.buntspecht.repository.UserRepository;
+import de.champonthis.buntspecht.security.LocalUserDetails;
+import jakarta.transaction.Transactional;
+
+@Service
+public class UserManager implements UserDetailsService, SmartInitializingSingleton {
+
+	private Logger logger = LoggerFactory.getLogger(UserManager.class);
+
+	@Autowired
+	private UserRepository userRepository;
+	@Autowired
+	private PasswordEncoder passwordEncoder;
+	@Autowired
+	private JPAQueryFactory jpaQueryFactory;
+	@Autowired
+	private TurnoverManager turnoverManager;
+	private QUser qUser = QUser.user;
+
+	@Value("${admin.password:}")
+	private String adminPassword;
+
+	public QueryResults<User> fetch(long limit, long offset, String sortBy, boolean descending, String usernameFilter) {
+		BooleanBuilder builder = new BooleanBuilder();
+
+		if (StringUtils.hasText(usernameFilter)) {
+			builder.and(qUser.username.contains(usernameFilter));
+		}
+
+		JPAQuery<User> query = jpaQueryFactory.from(qUser).where(builder.getValue()).select(qUser);
+		Long total = query.clone().select(qUser.username.countDistinct()).fetchOne();
+
+		if (StringUtils.hasText(sortBy)) {
+			Path<? extends Comparable<?>> path = null;
+			switch (sortBy) {
+				case "username":
+					path = qUser.username;
+					break;
+				case "name":
+					path = qUser.name;
+					break;
+			}
+			if (path != null) {
+				query.orderBy(new OrderSpecifier<>(descending ? Order.DESC : Order.ASC, path));
+			}
+		}
+
+		List<User> result = query.limit(limit).offset(offset).fetch();
+		return new QueryResults<User>(result, limit, offset, total == null ? 0L : total);
+	}
+
+	@Override
+	@Transactional
+	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+		User user = getByUsername(username);
+
+		if (user == null) {
+			throw new UsernameNotFoundException(username);
+		}
+
+		List<GrantedAuthority> authorities = new ArrayList<>();
+		if (user.getRoles() != null) {
+			for (String role : user.getRoles()) {
+				authorities.add(new SimpleGrantedAuthority(role));
+			}
+		}
+
+		String passwordHash = user.getPasswordHash();
+
+		if (passwordHash == null) {
+			passwordHash = "";
+		}
+
+		LocalUserDetails userDetails = new LocalUserDetails(username, passwordHash, authorities);
+		return userDetails;
+	}
+
+	@Override
+	public void afterSingletonsInstantiated() {
+		if (!userRepository.exists(qUser.roles.contains("ROLE_ADMIN"))) {
+			if (!StringUtils.hasText(adminPassword)) {
+				adminPassword = RandomStringUtils.random(24, true, true);
+				logger.error("password for 'admin': " + adminPassword);
+			}
+			User admin = new User();
+			admin.setUsername("admin");
+			admin.setRoles(List.of("ROLE_ADMIN", "ROLE_DEBUG"));
+			admin.setPasswordHash(passwordEncoder.encode(adminPassword));
+			admin.setLocale("de");
+			userRepository.save(admin);
+		}
+	}
+
+	@Transactional
+	public User getByUsername(String username) {
+		return userRepository.findOne(qUser.username.equalsIgnoreCase(username)).orElse(null);
+	}
+
+	public User getByExternalId(String externalId) {
+		return userRepository.findOne(qUser.externalId.eq(externalId)).orElse(null);
+	}
+
+	public User getByAuth(Authentication authentication) {
+		if (authentication != null) {
+			if (authentication instanceof UsernamePasswordAuthenticationToken) {
+				UsernamePasswordAuthenticationToken token = (UsernamePasswordAuthenticationToken) authentication;
+				return getByUsername(token.getName());
+			} else if (authentication instanceof OAuth2AuthenticationToken) {
+				OAuth2AuthenticationToken token = (OAuth2AuthenticationToken) authentication;
+				String externalId = token.getAuthorizedClientRegistrationId() + "-" +
+						token.getName();
+				User user = getByExternalId(externalId);
+				if (user == null) {
+					user = new User();
+					user.setExternalId(externalId);
+					String tmpUsername = token.getPrincipal().getAttribute("preferred_username");
+					if (!StringUtils.hasText(tmpUsername)) {
+						tmpUsername = token.getPrincipal().getAttribute("username");
+					}
+					if (!StringUtils.hasText(tmpUsername)) {
+						tmpUsername = token.getPrincipal().getAttribute("name");
+					} else {
+						user.setName(token.getPrincipal().getAttribute("name"));
+					}
+					if (!StringUtils.hasText(tmpUsername)) {
+						tmpUsername = token.getName();
+					}
+					if (!StringUtils.hasText(tmpUsername)) {
+						tmpUsername = "user";
+					}
+					int count = 1;
+					String username = tmpUsername;
+					while (userRepository.exists(qUser.username.equalsIgnoreCase(username))) {
+						username = tmpUsername + "-" + count;
+						count++;
+					}
+
+					user.setUsername(username);
+					user.setEmail(token.getPrincipal().getAttribute("email"));
+					user = userRepository.save(user);
+				}
+				return user;
+			}
+		}
+		return null;
+	}
+
+	public User save(User user) {
+		if (exists(user.getUsername())) {
+			user.setPasswordHash(this.getPasswordHash(user.getUsername()));
+		}
+
+		return userRepository.save(user);
+	}
+
+	public boolean exists(String username) {
+		return userRepository.exists(qUser.username.equalsIgnoreCase(username));
+	}
+
+	public void delete(User user) {
+		turnoverManager.deleteByUsername(user.getUsername());
+		userRepository.delete(user);
+	}
+
+	@Transactional
+	public String getPasswordHash(String username) {
+		Assert.isTrue(userRepository.existsById(username), "User with username '" + username + "' not exists!");
+		return userRepository.findById(username).get().getPasswordHash();
+	}
+
+	public User setPassword(String username, String password) {
+		Assert.isTrue(userRepository.existsById(username), "User with username '" + username + "' not exists!");
+		User user = userRepository.findById(username).get();
+		user.setPasswordHash(passwordEncoder.encode(password));
+		return userRepository.save(user);
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/AuthenticationController.java

@@ -0,0 +1,85 @@
+package de.champonthis.buntspecht.controller;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.ResolvableType;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.oauth2.client.registration.ClientRegistration;
+import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.security.LocalUserDetails;
+
+@RestController
+@RequestMapping("/auth")
+public class AuthenticationController extends BaseController {
+
+	private static String authorizationRequestBaseUri = "oauth2/authorization";
+
+	@Autowired(required = false)
+	private ClientRegistrationRepository clientRegistrationRepository;
+
+	@GetMapping
+	public Object me() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		if (auth != null && auth.getPrincipal() instanceof LocalUserDetails) {
+			return (LocalUserDetails) auth.getPrincipal();
+		}
+
+		throw new EntityResponseStatusException(HttpStatus.UNAUTHORIZED);
+	}
+
+	@SuppressWarnings("unchecked")
+	@GetMapping("external")
+	public List<Client> getExternalLoginUrls() {
+		List<Client> clients = new ArrayList<>();
+		if (clientRegistrationRepository != null) {
+			Iterable<ClientRegistration> clientRegistrations = null;
+			ResolvableType type = ResolvableType.forInstance(clientRegistrationRepository).as(Iterable.class);
+			if (type != ResolvableType.NONE && ClientRegistration.class.isAssignableFrom(type.resolveGenerics()[0])) {
+				clientRegistrations = (Iterable<ClientRegistration>) clientRegistrationRepository;
+				clientRegistrations.forEach(registration -> clients.add(new Client(registration.getRegistrationId(),
+						authorizationRequestBaseUri + "/" + registration.getRegistrationId())));
+			}
+		}
+
+		return clients;
+	}
+
+	protected static class Client {
+
+		private String id;
+
+		private String loginUrl;
+
+		public Client(String id, String loginUrl) {
+			super();
+			this.id = id;
+			this.loginUrl = loginUrl;
+		}
+
+		public String getId() {
+			return id;
+		}
+
+		public void setId(String id) {
+			this.id = id;
+		}
+
+		public String getLoginUrl() {
+			return loginUrl;
+		}
+
+		public void setLoginUrl(String loginUrl) {
+			this.loginUrl = loginUrl;
+		}
+
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/BaseController.java

@@ -0,0 +1,32 @@
+package de.champonthis.buntspecht.controller;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import de.champonthis.buntspecht.security.LocalUserDetails;
+
+public class BaseController {
+
+	protected boolean authenticated() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		return auth != null && auth.isAuthenticated();
+	}
+
+	protected String getCurrentUsername() {
+		LocalUserDetails userDetails = getLocalUserDetails();
+		return userDetails != null ? userDetails.getUsername() : null;
+	}
+
+	protected boolean hasRole(String role) {
+		LocalUserDetails userDetails = getLocalUserDetails();
+		return userDetails != null ? userDetails.getAuthorities().contains(new SimpleGrantedAuthority(role)) : false;
+	}
+
+	protected LocalUserDetails getLocalUserDetails() {
+		Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+		return (auth != null && auth.getPrincipal() instanceof LocalUserDetails)
+				? (LocalUserDetails) auth.getPrincipal()
+				: null;
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/TurnoverController.java

@@ -0,0 +1,141 @@
+package de.champonthis.buntspecht.controller;
+
+import java.time.Instant;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.web.PagedModel;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.querydsl.core.QueryResults;
+
+import de.champonthis.buntspecht.businesslogic.TurnoverManager;
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.controller.model.TurnoverFilterModel;
+import de.champonthis.buntspecht.controller.model.TurnoverFilterModel.MinMax;
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.controller.support.RequestBodyErrors;
+import de.champonthis.buntspecht.controller.validation.TurnoverValidator;
+import de.champonthis.buntspecht.model.Turnover;
+import jakarta.transaction.Transactional;
+
+@RestController
+@RequestMapping("/turnovers")
+public class TurnoverController extends BaseController {
+
+	@Autowired
+	private TurnoverManager turnoverManager;
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private TurnoverValidator turnoverValidator;
+
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping
+	@Transactional
+	public QueryResults<Turnover> fetch(
+			@RequestParam("limit") Optional<Long> limitParameter,
+			@RequestParam("offset") Optional<Long> offsetParameter,
+			@RequestParam("sort") Optional<String> sort,
+			@RequestParam("descending") Optional<Boolean> descending,
+			@RequestParam("from") Optional<Instant> from,
+			@RequestParam("to") Optional<Instant> to,
+			@RequestParam("customer") Optional<String> customer,
+			@RequestParam("motif") Optional<String> motif) {
+
+		TurnoverFilterModel filter = new TurnoverFilterModel();
+		filter.setCreated(new MinMax<Instant>(from.orElse(null), to.orElse(null)));
+		filter.setCustomer(customer.orElse(null));
+		filter.setMotif(motif.orElse(null));
+
+		return turnoverManager.fetch(getCurrentUsername(), limitParameter.orElse(15L), offsetParameter.orElse(0L),
+				sort.orElse("created"), descending.orElse(false), filter);
+	}
+
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping("/{id}")
+	@Transactional
+	public Turnover get(@PathVariable("id") Long id) {
+		Turnover turnover = turnoverManager.get(id);
+
+		if (turnover == null || !getCurrentUsername().equals(turnover.getUsername())) {
+			throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+		}
+
+		return turnover;
+	}
+
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping
+	@Transactional
+	public Turnover create(@RequestBody Turnover turnover) {
+		Errors errors = new RequestBodyErrors(turnover);
+		turnoverValidator.validate(turnover, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (!hasRole("ROLE_ADMIN") || !StringUtils.hasText(turnover.getUsername())
+				|| !userManager.exists(turnover.getUsername())) {
+			turnover.setUsername(getCurrentUsername());
+		}
+		turnover.setCreated(Instant.now());
+		turnover.setUpdated(turnover.getCreated());
+
+		return turnoverManager.save(turnover);
+	}
+
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping
+	@Transactional
+	public Turnover update(@RequestBody Turnover turnover) {
+		Errors errors = new RequestBodyErrors(turnover);
+		turnoverValidator.validate(turnover, errors);
+
+		if (errors.hasErrors() || turnover.getId() == null || turnover.getId() == 0L
+				|| !turnoverManager.exists(turnover.getId())) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (!hasRole("ROLE_ADMIN")) {
+			Turnover existing = turnoverManager.get(turnover.getId());
+			if (!getCurrentUsername().equals(existing.getUsername())) {
+				throw new EntityResponseStatusException(HttpStatus.FORBIDDEN);
+			}
+			turnover.setUsername(getCurrentUsername());
+		}
+
+		Turnover existing = turnoverManager.get(turnover.getId());
+
+		if (existing.equals(turnover)) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		turnover.setUpdated(Instant.now());
+
+		return turnoverManager.save(turnover);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{id}")
+	public void deleteById(@PathVariable("id") Long id) {
+		if (!turnoverManager.exists(id)) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		turnoverManager.deleteById(id);
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/UserController.java

@@ -0,0 +1,84 @@
+package de.champonthis.buntspecht.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.controller.model.UserPasswordModel;
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.controller.support.RequestBodyErrors;
+import de.champonthis.buntspecht.controller.validation.PasswordModelValidator;
+import de.champonthis.buntspecht.model.User;
+import jakarta.transaction.Transactional;
+
+@RestController
+@RequestMapping("/users")
+public class UserController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private PasswordEncoder passwordEncoder;
+	@Autowired
+	private PasswordModelValidator passwordModelValidator;
+
+	@PreAuthorize("isAuthenticated()")
+	@GetMapping("/user")
+	@Transactional
+	public User get() {
+		return userManager.getByUsername(getCurrentUsername());
+	}
+
+	@PreAuthorize("isAuthenticated()")
+	@PatchMapping("/user")
+	@Transactional
+	public User updateUser(@RequestBody User user) {
+		if (!getCurrentUsername().equals(user.getUsername())) {
+			throw new EntityResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY);
+		}
+
+		User orgUser = userManager.getByUsername(user.getUsername());
+
+		orgUser.setName(user.getName());
+		orgUser.setAbout(user.getAbout());
+		orgUser.setDarkTheme(user.isDarkTheme());
+		orgUser.setEmail(user.getEmail());
+		orgUser.setLocale(user.getLocale());
+
+		user = userManager.save(orgUser);
+		return user;
+	}
+
+	@PreAuthorize("isAuthenticated()")
+	@PostMapping("/password")
+	public void changePassword(@RequestBody UserPasswordModel passwordModel) {
+
+		Errors errors = new RequestBodyErrors(passwordModel);
+
+		User user = userManager.getByUsername(getCurrentUsername());
+
+		if (!StringUtils.hasText(passwordModel.getOld())
+				|| !passwordEncoder.matches(passwordModel.getOld(), userManager.getPasswordHash(user.getUsername()))) {
+			errors.rejectValue("old", "UNAUTHORIZED");
+		}
+
+		passwordModelValidator.validate(passwordModel, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		userManager.setPassword(user.getUsername(), passwordModel.getPassword());
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/admin/DebugController.java

@@ -0,0 +1,116 @@
+package de.champonthis.buntspecht.controller.admin;
+
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.SplittableRandom;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.champonthis.buntspecht.model.QUser;
+import de.champonthis.buntspecht.model.Turnover;
+import de.champonthis.buntspecht.model.User;
+import de.champonthis.buntspecht.repository.TurnoverRepository;
+import de.champonthis.buntspecht.repository.UserRepository;
+
+@RestController
+@RequestMapping("/debug")
+public class DebugController {
+
+    private Logger logger = LoggerFactory.getLogger(DebugController.class);
+
+    @Autowired
+    private PasswordEncoder passwordEncoder;
+    @Autowired
+    private UserRepository userRepository;
+    @Autowired
+    private TurnoverRepository turnoverRepository;
+
+    SplittableRandom splittableRandom = new SplittableRandom();
+
+    @PreAuthorize("hasRole('ROLE_DEBUG')")
+    @GetMapping("/random")
+    public void random(
+            @RequestParam("users") Optional<Integer> usersParameter,
+            @RequestParam("minEntries") Optional<Integer> minEntriesParameter,
+            @RequestParam("maxEntries") Optional<Integer> maxEntriesParameter,
+            @RequestParam("days") Optional<Integer> daysParameter) {
+        logger.warn("start random generation");
+
+        long userCount = userRepository.count(QUser.user.username.startsWith("Tätowier"));
+
+        List<String> newUser = new ArrayList<>();
+
+        for (long i = userCount + 1; i <= userCount + usersParameter.orElse(5); i++) {
+            User user = new User();
+            String username = (splittableRandom.nextBoolean() ? "Tätowiererin " : "Tätowierer ") + i;
+            String name = "Random " + RandomStringUtils.randomAlphanumeric(splittableRandom.nextInt(4, 8));
+            user.setUsername(username);
+            user.setName(name);
+            user.setPasswordHash(passwordEncoder.encode(username));
+            user = userRepository.save(user);
+            logger.trace("Created user: '" + username + "'");
+            newUser.add(user.getUsername());
+        }
+
+        logger.info("Created " + usersParameter.orElse(5) + " users");
+
+        Instant startInclusive = Instant.now().minus(daysParameter.orElse(350), ChronoUnit.DAYS);
+        Instant endExclusive = Instant.now();
+
+        for (String username : newUser) {
+            long numEntries = splittableRandom.nextLong(minEntriesParameter.orElse(3), maxEntriesParameter.orElse(20));
+            for (int i = 0; i < numEntries; i++) {
+                Turnover turnover = new Turnover();
+                turnover.setUsername(username);
+                turnover.setCreated(randomDate(startInclusive, endExclusive));
+                turnover.setUpdated(splittableRandom.nextBoolean() ? turnover.getCreated()
+                        : randomDate(turnover.getCreated(), endExclusive));
+                turnover.setCustomer(RandomStringUtils.randomAlphabetic(splittableRandom.nextInt(3, 10)));
+
+                turnover.setMotif(RandomStringUtils.randomAlphabetic(splittableRandom.nextInt(5, 30)));
+
+                turnover.setPrice(Float.valueOf(String.format("%.2f", splittableRandom.nextFloat(0.01f, 2000f))));
+
+                if (splittableRandom.nextBoolean()) {
+                    turnover.setTimeInvestment(
+                            Float.valueOf(String.format("%.2f", splittableRandom.nextFloat(0.01f, 20f))));
+                }
+
+                if (splittableRandom.nextBoolean()) {
+                    turnover.setRemark(RandomStringUtils.randomAlphabetic(splittableRandom.nextInt(10, 50)));
+                }
+
+                if (splittableRandom.nextInt(5) < 3) {
+                    turnover.setMaterialConsumption(
+                            RandomStringUtils.randomAlphabetic(splittableRandom.nextInt(10, 250)));
+                }
+
+                turnover = turnoverRepository.save(turnover);
+                logger.trace("Created turnover: '" + turnover.getId() + "'");
+            }
+            logger.info("Created " + numEntries + " turnovers of '" + username + "'");
+        }
+
+        logger.warn("finished random generation");
+    }
+
+    protected Instant randomDate(Instant startInclusive, Instant endExclusive) {
+        long startSeconds = startInclusive.getEpochSecond();
+        long endSeconds = endExclusive.getEpochSecond();
+        long random = splittableRandom.nextLong(startSeconds, endSeconds);
+
+        return Instant.ofEpochSecond(random);
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/admin/SystemPropertiesController.java

@@ -0,0 +1,78 @@
+package de.champonthis.buntspecht.controller.admin;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.champonthis.buntspecht.controller.BaseController;
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.model.SystemProperty;
+import de.champonthis.buntspecht.repository.SystemPropertyRepository;
+
+@RestController
+@RequestMapping("/system/properties")
+public class SystemPropertiesController extends BaseController {
+
+	@Autowired
+	private SystemPropertyRepository systemPropertyRepository;
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping()
+	public List<SystemProperty> getProperties(@RequestParam("page") Optional<Integer> pageParameter,
+			@RequestParam("size") Optional<Integer> sizeParameter) {
+		Sort sort = Sort.by("key").ascending();
+		return systemPropertyRepository.findAll(PageRequest.of(pageParameter.orElse(0), sizeParameter.orElse(10), sort))
+				.getContent();
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{key}")
+	public SystemProperty getProperty(@PathVariable("key") String key) {
+		if (!systemPropertyRepository.existsById(key)) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return systemPropertyRepository.findById(key).get();
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("")
+	public SystemProperty createOrUpdate(@RequestBody SystemProperty systemProperty) {
+		return systemPropertyRepository.save(systemProperty);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/list")
+	public List<SystemProperty> createOrUpdateList(@RequestBody List<SystemProperty> systemProperties) {
+		List<SystemProperty> result = new ArrayList<>();
+		for (SystemProperty systemProperty : systemProperties) {
+			result.add(
+					systemPropertyRepository.save(systemProperty));
+		}
+		return result;
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{key}")
+	public void deleteProperty(@PathVariable("key") String key) {
+		if (!systemPropertyRepository.existsById(key)) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		systemPropertyRepository.deleteById(key);
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/admin/TurnoverManagementController.java

@@ -0,0 +1,124 @@
+package de.champonthis.buntspecht.controller.admin;
+
+import java.time.Instant;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.querydsl.core.QueryResults;
+import com.querydsl.core.Tuple;
+
+import de.champonthis.buntspecht.businesslogic.TurnoverManager;
+import de.champonthis.buntspecht.controller.BaseController;
+import de.champonthis.buntspecht.controller.model.TurnoverFilterModel;
+import de.champonthis.buntspecht.controller.model.TurnoverFilterModel.MinMax;
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.controller.support.RequestBodyErrors;
+import de.champonthis.buntspecht.controller.validation.TurnoverValidator;
+import de.champonthis.buntspecht.model.Turnover;
+import jakarta.transaction.Transactional;
+
+@RestController
+@RequestMapping("/turnovers/manage")
+public class TurnoverManagementController extends BaseController {
+
+	@Autowired
+	private TurnoverManager turnoverManager;
+	@Autowired
+	private TurnoverValidator turnoverValidator;
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	@Transactional
+	public QueryResults<Turnover> fetch(
+			@RequestParam("username") Optional<String> usernameParameter,
+			@RequestParam("limit") Optional<Long> limitParameter,
+			@RequestParam("offset") Optional<Long> offsetParameter,
+			@RequestParam("sort") Optional<String> sort,
+			@RequestParam("descending") Optional<Boolean> descending,
+			@RequestParam("from") Optional<Instant> from,
+			@RequestParam("to") Optional<Instant> to,
+			@RequestParam("customer") Optional<String> customer,
+			@RequestParam("motif") Optional<String> motif) {
+
+		TurnoverFilterModel filter = new TurnoverFilterModel();
+		filter.setCreated(new MinMax<Instant>(from.orElse(null), to.orElse(null)));
+		filter.setCustomer(customer.orElse(null));
+		filter.setMotif(motif.orElse(null));
+
+		return turnoverManager.fetch(usernameParameter.orElse(null), limitParameter.orElse(15L),
+				offsetParameter.orElse(0L), sort.orElse("created"), descending.orElse(false), filter);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/overview")
+	@Transactional
+	public QueryResults<Tuple> fetchGroup(
+			@RequestParam("username") Optional<String> usernameParameter,
+			@RequestParam("limit") Optional<Long> limitParameter,
+			@RequestParam("offset") Optional<Long> offsetParameter,
+			@RequestParam("sort") Optional<String> sort,
+			@RequestParam("descending") Optional<Boolean> descending,
+			@RequestParam("from") Optional<Instant> from,
+			@RequestParam("to") Optional<Instant> to,
+			@RequestParam("customer") Optional<String> customer,
+			@RequestParam("motif") Optional<String> motif) {
+
+		TurnoverFilterModel filter = new TurnoverFilterModel();
+		filter.setCreated(new MinMax<Instant>(from.orElse(null), to.orElse(null)));
+		filter.setCustomer(customer.orElse(null));
+		filter.setMotif(motif.orElse(null));
+		return turnoverManager.overview(usernameParameter.orElse(null), limitParameter.orElse(15L),
+				offsetParameter.orElse(0L), sort.orElse("username"),
+				descending.orElse(false), filter);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{id}")
+	@Transactional
+	public Turnover getById(@PathVariable("id") Long id) {
+		if (!turnoverManager.exists(id)) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return turnoverManager.get(id);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	@Transactional
+	public Turnover update(@RequestBody Turnover turnover) {
+		Errors errors = new RequestBodyErrors(turnover);
+		turnoverValidator.validate(turnover, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		turnover.setUpdated(Instant.now());
+
+		return turnoverManager.save(turnover);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{id}")
+	@Transactional
+	public void deleteById(@PathVariable("id") Long id) {
+		if (!turnoverManager.exists(id)) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		turnoverManager.deleteById(id);
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/admin/UserManagementController.java

@@ -0,0 +1,148 @@
+package de.champonthis.buntspecht.controller.admin;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.Errors;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.querydsl.core.QueryResults;
+
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.controller.BaseController;
+import de.champonthis.buntspecht.controller.admin.validation.UserValidator;
+import de.champonthis.buntspecht.controller.model.UserPasswordModel;
+import de.champonthis.buntspecht.controller.support.EntityResponseStatusException;
+import de.champonthis.buntspecht.controller.support.RequestBodyErrors;
+import de.champonthis.buntspecht.controller.validation.PasswordModelValidator;
+import de.champonthis.buntspecht.model.User;
+import jakarta.transaction.Transactional;
+
+@RestController
+@RequestMapping("/users/manage")
+public class UserManagementController extends BaseController {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private UserValidator userValidator;
+	@Autowired
+	private PasswordModelValidator passwordModelValidator;
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping
+	@Transactional
+	public QueryResults<User> fetch(
+			@RequestParam("limit") Optional<Long> limitParameter,
+			@RequestParam("offset") Optional<Long> offsetParameter,
+			@RequestParam("sort") Optional<String> sort,
+			@RequestParam("descending") Optional<Boolean> descending,
+			@RequestParam("filter") Optional<String> search) {
+		return userManager.fetch(limitParameter.orElse(15L), offsetParameter.orElse(0L), sort.orElse("username"),
+				descending.orElse(false), search.orElse(""));
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/pick")
+	@Transactional
+	public List<User> pick(
+			@RequestParam("filter") Optional<String> search) {
+		return userManager.fetch(5L, 0L, "", false, search.orElse("")).getResults();
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@GetMapping("/{username}")
+	@Transactional
+	public User get(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		return user;
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping
+	@Transactional
+	public User create(@RequestBody User user) {
+		Errors errors = new RequestBodyErrors(user);
+		userValidator.validateNew(user, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (user.getLocale() == null) {
+			user.setLocale("de");
+		}
+
+		return userManager.save(user);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PatchMapping
+	@Transactional
+	public User update(@RequestBody User user) {
+		Errors errors = new RequestBodyErrors(user);
+		userValidator.validate(user, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		if (getCurrentUsername().equals(user.getUsername()) && user.getRoles().indexOf("ROLE_ADMIN") == -1) {
+			user.getRoles().add("ROLE_ADMIN");
+		}
+
+		return userManager.save(user);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{username}")
+	@Transactional
+	public void delete(@PathVariable("username") String username) {
+		User user = userManager.getByUsername(username);
+
+		if (user == null || getCurrentUsername().equals(username)) {
+			throw new EntityResponseStatusException(HttpStatus.NOT_MODIFIED);
+		}
+
+		userManager.delete(user);
+	}
+
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/{username}/password")
+	public void password(@PathVariable("username") String username,
+			@RequestBody UserPasswordModel passwordModel) {
+
+		Errors errors = new RequestBodyErrors(passwordModel);
+
+		User user = userManager.getByUsername(username);
+
+		if (user == null) {
+			throw new EntityResponseStatusException(HttpStatus.NO_CONTENT);
+		}
+
+		passwordModelValidator.validate(passwordModel, errors);
+
+		if (errors.hasErrors()) {
+			throw new EntityResponseStatusException(errors.getAllErrors(), HttpStatus.CONFLICT);
+		}
+
+		userManager.setPassword(user.getUsername(), passwordModel.getPassword());
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/admin/validation/UserValidator.java

@@ -0,0 +1,46 @@
+package de.champonthis.buntspecht.controller.admin.validation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.model.User;
+
+@Component
+public class UserValidator implements Validator {
+
+    @Autowired
+    private UserManager userManager;
+
+    @Override
+    public boolean supports(Class<?> clazz) {
+        return clazz.isAssignableFrom(User.class);
+    }
+
+    @Override
+    public void validate(Object target, Errors errors) {
+        User user = (User) target;
+        if (!StringUtils.hasText(user.getUsername())) {
+            errors.rejectValue("username", "REQUIRED");
+            return;
+        }
+    }
+
+    public void validateNew(Object target, Errors errors) {
+        validate(target, errors);
+
+        if (errors.hasErrors()) {
+            return;
+        }
+
+        User user = (User) target;
+        if (userManager.exists(user.getUsername())) {
+            errors.rejectValue("username", "ALREADY_EXISTS");
+            return;
+        }
+    }
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/model/TupleSerializer.java

@@ -0,0 +1,28 @@
+package de.champonthis.buntspecht.controller.model;
+
+import java.io.IOException;
+
+import org.springframework.boot.jackson.JsonComponent;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.querydsl.core.Tuple;
+
+@JsonComponent
+public class TupleSerializer extends JsonSerializer<Tuple> {
+
+    @Override
+    public void serialize(Tuple value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+        if (value.toArray().length > 1) {
+            gen.writeStartArray();
+        }
+        for (Object object : value.toArray()) {
+            gen.writeObject(object);
+        }
+        if (value.toArray().length > 1) {
+            gen.writeEndArray();
+        }
+    }
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/model/TurnoverFilterModel.java

@@ -0,0 +1,89 @@
+package de.champonthis.buntspecht.controller.model;
+
+import java.time.Instant;
+
+public class TurnoverFilterModel {
+
+    private MinMax<Instant> created;
+    private MinMax<Instant> updated;
+    private String customer;
+    private String motif;
+    private MinMax<Float> price;
+    private MinMax<Float> timeInvestment;
+
+    public MinMax<Instant> getCreated() {
+        return created;
+    }
+
+    public void setCreated(MinMax<Instant> created) {
+        this.created = created;
+    }
+
+    public MinMax<Instant> getUpdated() {
+        return updated;
+    }
+
+    public void setUpdated(MinMax<Instant> updated) {
+        this.updated = updated;
+    }
+
+    public String getCustomer() {
+        return customer;
+    }
+
+    public void setCustomer(String customer) {
+        this.customer = customer;
+    }
+
+    public String getMotif() {
+        return motif;
+    }
+
+    public void setMotif(String motif) {
+        this.motif = motif;
+    }
+
+    public MinMax<Float> getPrice() {
+        return price;
+    }
+
+    public void setPrice(MinMax<Float> price) {
+        this.price = price;
+    }
+
+    public MinMax<Float> getTimeInvestment() {
+        return timeInvestment;
+    }
+
+    public void setTimeInvestment(MinMax<Float> timeInvestment) {
+        this.timeInvestment = timeInvestment;
+    }
+
+    public static class MinMax<T> {
+
+        private T min;
+        private T max;
+
+        public MinMax(T min, T max) {
+            this.min = min;
+            this.max = max;
+        }
+
+        public T getMin() {
+            return min;
+        }
+
+        public void setMin(T min) {
+            this.min = min;
+        }
+
+        public T getMax() {
+            return max;
+        }
+
+        public void setMax(T max) {
+            this.max = max;
+        }
+
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/model/UserPasswordModel.java

@@ -0,0 +1,32 @@
+package de.champonthis.buntspecht.controller.model;
+
+public class UserPasswordModel {
+
+    private String old;
+    private String password;
+    private String password2;
+
+    public String getOld() {
+        return old;
+    }
+
+    public void setOld(String old) {
+        this.old = old;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getPassword2() {
+        return password2;
+    }
+
+    public void setPassword2(String password2) {
+        this.password2 = password2;
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/support/ControllerExceptionHandler.java

@@ -0,0 +1,23 @@
+package de.champonthis.buntspecht.controller.support;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.context.request.WebRequest;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
+
+
+@ControllerAdvice
+public class ControllerExceptionHandler extends ResponseEntityExceptionHandler {
+
+	
+	@ExceptionHandler(value = { EntityResponseStatusException.class })
+	protected ResponseEntity<Object> handleResponseEntityStatusException(RuntimeException exception,
+			WebRequest request) {
+		EntityResponseStatusException entityResponseStatusException = (EntityResponseStatusException) exception;
+		return handleExceptionInternal(exception, entityResponseStatusException.getBody(), new HttpHeaders(),
+				entityResponseStatusException.getStatus(), request);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/support/EntityResponseStatusException.java

@@ -0,0 +1,56 @@
+package de.champonthis.buntspecht.controller.support;
+
+import org.springframework.core.NestedRuntimeException;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.Assert;
+
+import jakarta.annotation.Nullable;
+
+
+public class EntityResponseStatusException extends NestedRuntimeException {
+
+	private static final long serialVersionUID = 1L;
+
+	private final HttpStatus status;
+
+	@Nullable
+	private final Object body;
+
+	
+	public EntityResponseStatusException(HttpStatus status) {
+		this(null, status);
+	}
+
+	
+	public EntityResponseStatusException(@Nullable Object body, HttpStatus status) {
+		this(body, status, null);
+	}
+
+	
+	public EntityResponseStatusException(@Nullable Object body, HttpStatus status, @Nullable Throwable cause) {
+		super(null, cause);
+		Assert.notNull(status, "HttpStatus is required");
+		this.status = status;
+		this.body = body;
+	}
+
+	
+	public HttpStatus getStatus() {
+		return this.status;
+	}
+
+	
+	@Nullable
+	public Object getBody() {
+		return this.body;
+	}
+
+	/*
+	 * @see org.springframework.core.NestedRuntimeException#getMessage()
+	 */
+	@Override
+	public String getMessage() {
+		return this.status + (this.body != null ? " \"" + this.body + "\"" : "");
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/support/JsonStringBodyControllerAdvice.java

@@ -0,0 +1,101 @@
+package de.champonthis.buntspecht.controller.support;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+
+import org.springframework.core.MethodParameter;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpInputMessage;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.StringHttpMessageConverter;
+import org.springframework.http.server.ServerHttpRequest;
+import org.springframework.http.server.ServerHttpResponse;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice;
+import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonPrimitive;
+
+
+@ControllerAdvice
+public class JsonStringBodyControllerAdvice implements RequestBodyAdvice, ResponseBodyAdvice<String> {
+
+	private Gson gson = new Gson();
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * supports(org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public boolean supports(MethodParameter methodParameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) {
+		return targetType instanceof Class && String.class.equals((Class<?>) targetType);
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * beforeBodyRead(org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public HttpInputMessage beforeBodyRead(HttpInputMessage inputMessage, MethodParameter parameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) throws IOException {
+		return inputMessage;
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * afterBodyRead(java.lang.Object, org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public Object afterBodyRead(Object body, HttpInputMessage inputMessage, MethodParameter parameter, Type targetType,
+			Class<? extends HttpMessageConverter<?>> converterType) {
+		body = ((String) body).replaceAll("^\"|\"$", "");
+		return body;
+	}
+
+	/*
+	 * @see org.springframework.web.servlet.mvc.method.annotation.RequestBodyAdvice#
+	 * handleEmptyBody(java.lang.Object, org.springframework.http.HttpInputMessage,
+	 * org.springframework.core.MethodParameter, java.lang.reflect.Type,
+	 * java.lang.Class)
+	 */
+	@Override
+	public Object handleEmptyBody(Object body, HttpInputMessage inputMessage, MethodParameter parameter,
+			Type targetType, Class<? extends HttpMessageConverter<?>> converterType) {
+		return body;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice#
+	 * supports(org.springframework.core.MethodParameter, java.lang.Class)
+	 */
+	@Override
+	public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
+		return converterType == StringHttpMessageConverter.class;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice#
+	 * beforeBodyWrite(java.lang.Object, org.springframework.core.MethodParameter,
+	 * org.springframework.http.MediaType, java.lang.Class,
+	 * org.springframework.http.server.ServerHttpRequest,
+	 * org.springframework.http.server.ServerHttpResponse)
+	 */
+	@Override
+	public String beforeBodyWrite(String body, MethodParameter returnType, MediaType selectedContentType,
+			Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request,
+			ServerHttpResponse response) {
+		response.getHeaders().set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
+		return gson.toJson(new JsonPrimitive(body));
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/support/RequestBodyErrors.java

@@ -0,0 +1,37 @@
+package de.champonthis.buntspecht.controller.support;
+
+import org.springframework.lang.Nullable;
+import org.springframework.validation.AbstractBindingResult;
+
+
+public class RequestBodyErrors extends AbstractBindingResult {
+
+	@Nullable
+	private final Object target;
+
+	
+	public RequestBodyErrors(@Nullable Object target) {
+		super("request-body");
+		this.target = target;
+	}
+
+	/*
+	 * @see org.springframework.validation.AbstractBindingResult#getTarget()
+	 */
+	@Override
+	public Object getTarget() {
+		return target;
+	}
+
+	/*
+	 * @see
+	 * org.springframework.validation.AbstractBindingResult#getActualFieldValue(java
+	 * .lang.String)
+	 */
+	@Override
+	protected Object getActualFieldValue(String field) {
+		// Not necessary
+		return null;
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/validation/PasswordModelValidator.java

@@ -0,0 +1,85 @@
+package de.champonthis.buntspecht.controller.validation;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.passay.CharacterRule;
+import org.passay.EnglishCharacterData;
+import org.passay.LengthRule;
+import org.passay.PasswordData;
+import org.passay.PasswordValidator;
+import org.passay.Rule;
+import org.passay.RuleResult;
+import org.passay.RuleResultDetail;
+import org.passay.WhitespaceRule;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.champonthis.buntspecht.businesslogic.SystemPropertyManager;
+import de.champonthis.buntspecht.controller.model.UserPasswordModel;
+
+@Component
+public class PasswordModelValidator implements Validator {
+
+    @Autowired
+    private SystemPropertyManager systemPropertyManager;
+
+    public static final String SYSTEM_PROPERTY_PASSWORD_RULE_WHITESPACE = "password.rule.whitespace";
+    public static final String SYSTEM_PROPERTY_PASSWORD_RULE_LENGTH = "password.rule.length";
+    public static final String SYSTEM_PROPERTY_PASSWORD_RULE_UPPERCASE = "password.rule.uppercase";
+    public static final String SYSTEM_PROPERTY_PASSWORD_RULE_DIGIT = "password.rule.digit";
+    public static final String SYSTEM_PROPERTY_PASSWORD_RULE_SPECIAL = "password.rule.special";
+
+    @Override
+    public boolean supports(Class<?> clazz) {
+        return clazz.isAssignableFrom(UserPasswordModel.class);
+    }
+
+    @Override
+    public void validate(Object target, Errors errors) {
+        UserPasswordModel passwordModel = (UserPasswordModel) target;
+
+        List<Rule> rules = new ArrayList<Rule>();
+
+        if (systemPropertyManager.getBoolean(SYSTEM_PROPERTY_PASSWORD_RULE_WHITESPACE, true)) {
+            rules.add(new WhitespaceRule());
+        }
+
+        int length = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_LENGTH, 8);
+        if (length > 0) {
+            rules.add(new LengthRule(length, 4096));
+        }
+
+        int uppercase = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_UPPERCASE, 1);
+        if (uppercase > 0) {
+            rules.add(new CharacterRule(EnglishCharacterData.UpperCase, uppercase));
+        }
+
+        int digit = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_DIGIT, 1);
+        if (digit > 0) {
+            rules.add(new CharacterRule(EnglishCharacterData.Digit, digit));
+        }
+
+        int special = systemPropertyManager.getInteger(SYSTEM_PROPERTY_PASSWORD_RULE_SPECIAL, 1);
+        if (special > 0) {
+            rules.add(new CharacterRule(EnglishCharacterData.Special, special));
+        }
+
+        PasswordValidator validator = new PasswordValidator(rules);
+        PasswordData password = new PasswordData(passwordModel.getPassword());
+        RuleResult result = validator.validate(password);
+
+        if (!result.isValid()) {
+            for (RuleResultDetail ruleResultDetail : result.getDetails()) {
+                errors.rejectValue("password", ruleResultDetail.getErrorCode());
+            }
+        }
+
+        if (!passwordModel.getPassword().equals(passwordModel.getPassword2())) {
+            errors.rejectValue("password2", "NOT_MATCH");
+        }
+    }
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/controller/validation/TurnoverValidator.java

@@ -0,0 +1,38 @@
+package de.champonthis.buntspecht.controller.validation;
+
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+import de.champonthis.buntspecht.model.Turnover;
+
+@Component
+public class TurnoverValidator implements Validator {
+
+    @Override
+    public boolean supports(Class<?> clazz) {
+        return clazz.isAssignableFrom(Turnover.class);
+    }
+
+    @Override
+    public void validate(Object target, Errors errors) {
+        Turnover turnover = (Turnover) target;
+
+        if (!StringUtils.hasText(turnover.getCustomer())) {
+            errors.rejectValue("customer", "REQUIRED");
+        }
+
+        if (!StringUtils.hasText(turnover.getMotif())) {
+            errors.rejectValue("motif", "REQUIRED");
+        }
+
+        if (turnover.getPrice() == 0) {
+            errors.rejectValue("price", "REQUIRED");
+        }
+
+        if (turnover.getPrice() < 0) {
+            errors.rejectValue("price", "POSITIVE_VALUE");
+        }
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/i18n/businesslogic/I18nManager.java

@@ -0,0 +1,143 @@
+package de.champonthis.buntspecht.i18n.businesslogic;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.Map.Entry;
+import java.util.stream.Collectors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.SmartInitializingSingleton;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+
+import de.champonthis.buntspecht.i18n.model.I18n;
+import de.champonthis.buntspecht.i18n.repository.I18nRepository;
+
+
+@Component
+public class I18nManager implements SmartInitializingSingleton {
+
+	private Logger logger = LoggerFactory.getLogger(I18nManager.class);
+
+	@Autowired
+	private I18nRepository i18nRepository;
+
+	@Autowired
+	private ResourceLoader resourceLoader;
+
+	private Gson gson = new Gson();
+
+	
+	public I18n get(String locale) {
+		return i18nRepository.findById(locale).orElse(null);
+	}
+
+	
+	public JsonObject getLabel(String locale) {
+		I18n i18n = get(locale);
+		if (i18n != null && StringUtils.hasText(i18n.getLabel())) {
+			JsonElement element = JsonParser.parseString(i18n.getLabel());
+			if (element != null && element.isJsonObject()) {
+				return element.getAsJsonObject();
+			}
+		}
+
+		return null;
+	}
+
+	
+	public List<String> getLocales() {
+		return i18nRepository.findAll().stream().map(I18n::getLocale).collect(Collectors.toList());
+	}
+
+	
+	protected void extendJsonObject(JsonObject dest, JsonObject src) {
+		for (Entry<String, JsonElement> srcEntry : src.entrySet()) {
+			String srcKey = srcEntry.getKey();
+			JsonElement srcValue = srcEntry.getValue();
+			if (dest.has(srcKey)) {
+				JsonElement destValue = dest.get(srcKey);
+				if (destValue.isJsonObject() && srcValue.isJsonObject()) {
+					extendJsonObject(destValue.getAsJsonObject(), srcValue.getAsJsonObject());
+				} else {
+					dest.add(srcKey, srcValue);
+				}
+			} else {
+				dest.add(srcKey, srcValue);
+			}
+		}
+	}
+
+	
+	public I18n addLabel(String locale, JsonObject newLabel) {
+		JsonObject label = getLabel(locale);
+
+		if (label == null || label.size() == 0 || label.entrySet().isEmpty()) {
+			label = newLabel;
+		} else {
+			extendJsonObject(label, newLabel);
+		}
+
+		I18n i18n = new I18n();
+		i18n.setLocale(locale);
+		i18n.setLabel(gson.toJson(label));
+
+		return i18nRepository.save(i18n);
+	}
+
+	
+	public I18n setLabel(String locale, JsonObject label) {
+		I18n i18n = new I18n();
+		i18n.setLocale(locale);
+		i18n.setLabel(gson.toJson(label));
+
+		return i18nRepository.save(i18n);
+	}
+
+	
+	public void deleteLabel(String locale) {
+		if (i18nRepository.existsById(locale)) {
+			i18nRepository.deleteById(locale);
+		}
+	}
+
+	/*
+	 * @see org.springframework.beans.factory.SmartInitializingSingleton#
+	 * afterSingletonsInstantiated()
+	 */
+	@Override
+	public void afterSingletonsInstantiated() {
+		try {
+			Resource resource = resourceLoader.getResource("classpath:label");
+
+			if (resource.exists()) {
+				File labelFolder = resource.getFile();
+				if (labelFolder.exists() && labelFolder.isDirectory()) {
+					for (File labelFile : labelFolder.listFiles()) {
+						JsonObject label = JsonParser.parseReader(new FileReader(labelFile, StandardCharsets.UTF_8))
+								.getAsJsonObject();
+
+						String locale = labelFile.getName().replace(".json", "");
+						addLabel(locale, label);
+					}
+				}
+			}
+
+		} catch (IOException e) {
+			logger.warn("cannot read in label folder", e.getMessage());
+		}
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/i18n/controller/I18nController.java

@@ -0,0 +1,83 @@
+package de.champonthis.buntspecht.i18n.controller;
+
+import java.io.IOException;
+import java.util.List;
+
+import jakarta.servlet.http.HttpServletResponse;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonObject;
+
+import de.champonthis.buntspecht.controller.BaseController;
+import de.champonthis.buntspecht.i18n.businesslogic.I18nManager;
+
+
+@RestController
+@RequestMapping("/i18n")
+public class I18nController extends BaseController {
+
+	@Autowired
+	private I18nManager i18nManager;
+
+	private Gson gson = new Gson();
+
+	
+	@GetMapping
+	public List<String> getLocales() {
+		return i18nManager.getLocales();
+	}
+
+	
+	@GetMapping("/{locale}")
+	public void getLabel(@PathVariable("locale") String locale, HttpServletResponse response)
+			throws JsonIOException, IOException {
+		JsonObject label = i18nManager.getLabel(locale);
+		if (label != null) {
+			response.setCharacterEncoding("utf-8");
+			gson.toJson(label, response.getWriter());
+		}
+	}
+
+	
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PostMapping("/{locale}")
+	public void setLabel(@PathVariable("locale") String locale, @RequestBody Object label) {
+		JsonElement element = gson.toJsonTree(label);
+
+		if (element != null && element.isJsonObject()) {
+			i18nManager.setLabel(locale, element.getAsJsonObject());
+		}
+	}
+
+	
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@PutMapping("/{locale}")
+	public void addLabel(@PathVariable("locale") String locale, @RequestBody Object label) {
+		JsonElement element = gson.toJsonTree(label);
+
+		if (element != null && element.isJsonObject()) {
+			i18nManager.addLabel(locale, element.getAsJsonObject());
+		}
+	}
+
+	
+	@PreAuthorize("hasRole('ROLE_ADMIN')")
+	@DeleteMapping("/{locale}")
+	public void deleteLocale(@PathVariable("locale") String locale) {
+		i18nManager.deleteLabel(locale);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/i18n/model/I18n.java

@@ -0,0 +1,43 @@
+package de.champonthis.buntspecht.i18n.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Lob;
+import jakarta.persistence.Table;
+import jakarta.persistence.UniqueConstraint;
+
+
+@Entity
+@Table(name = "i18n", uniqueConstraints = @UniqueConstraint(columnNames = { "locale" }))
+public class I18n {
+
+	@Id
+	@Column(name = "locale", unique = true, nullable = false)
+	private String locale;
+
+	@Lob
+	@Column(name = "label", length = 100000)
+	private String label;
+
+	
+	public String getLocale() {
+		return locale;
+	}
+
+	
+	public void setLocale(String locale) {
+		this.locale = locale;
+	}
+
+	
+	public String getLabel() {
+		return label;
+	}
+
+	
+	public void setLabel(String label) {
+		this.label = label;
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/i18n/repository/I18nRepository.java

@@ -0,0 +1,13 @@
+package de.champonthis.buntspecht.i18n.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.champonthis.buntspecht.i18n.model.I18n;
+
+
+@Repository
+public interface I18nRepository extends JpaRepository<I18n, String>, QuerydslPredicateExecutor<I18n> {
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/model/PersistentLogin.java

@@ -0,0 +1,56 @@
+package de.champonthis.buntspecht.model;
+
+import java.time.Instant;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "persistent_logins")
+public class PersistentLogin {
+
+	@Column(name = "username", length = 64, nullable = false)
+	private String username;
+	@Id
+	@Column(name = "series", length = 64)
+	private String series;
+	@Column(name = "token", length = 64, nullable = false)
+	private String token;
+	@Column(name = "last_used", nullable = false)
+	private Instant last_used;
+
+	public String getUsername() {
+		return username;
+	}
+
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	public String getSeries() {
+		return series;
+	}
+
+	public void setSeries(String series) {
+		this.series = series;
+	}
+
+	public String getToken() {
+		return token;
+	}
+
+	public void setToken(String token) {
+		this.token = token;
+	}
+
+	public Instant getLast_used() {
+		return last_used;
+	}
+
+	public void setLast_used(Instant last_used) {
+		this.last_used = last_used;
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/model/SystemProperty.java

@@ -0,0 +1,53 @@
+package de.champonthis.buntspecht.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Lob;
+import jakarta.persistence.Table;
+
+
+@Entity
+@Table(name = "system_properties")
+public class SystemProperty {
+
+	@Id
+	@Column(name = "id")
+	private String key;
+	@Lob
+	@Column(name = "value", length = 100000)
+	private String value;
+
+	
+	public SystemProperty() {
+		super();
+	}
+
+	
+	public SystemProperty(String key, String value) {
+		super();
+		this.key = key;
+		this.value = value;
+	}
+
+	
+	public String getKey() {
+		return key;
+	}
+
+	
+	public void setKey(String key) {
+		this.key = key;
+	}
+
+	
+	public String getValue() {
+		return value;
+	}
+
+	
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/model/Turnover.java

@@ -0,0 +1,158 @@
+package de.champonthis.buntspecht.model;
+
+import java.time.Instant;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Lob;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "turnovers")
+public class Turnover {
+
+    @Id
+    @Column(name = "id", updatable = false, unique = true, nullable = false)
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "username", nullable = false)
+    private String username;
+
+    @Column(name = "created", nullable = false, updatable = false)
+    private Instant created;
+
+    @Column(name = "updated", nullable = false)
+    private Instant updated;
+
+    @Column(name = "customer", nullable = false)
+    private String customer;
+
+    @Column(name = "motif", nullable = false)
+    private String motif;
+
+    @Column(name = "price", nullable = false)
+    private float price;
+
+    @Column(name = "time_investment", nullable = true)
+    private float timeInvestment;
+
+    @Lob
+    @Column(name = "remark", nullable = true, length = 5000)
+    private String remark;
+
+    @Lob
+    @Column(name = "material_consumption", nullable = true, length = 5000)
+    private String materialConsumption;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public Instant getCreated() {
+        return created;
+    }
+
+    public void setCreated(Instant created) {
+        this.created = created;
+    }
+
+    public Instant getUpdated() {
+        return updated;
+    }
+
+    public void setUpdated(Instant updated) {
+        this.updated = updated;
+    }
+
+    public String getCustomer() {
+        return customer;
+    }
+
+    public void setCustomer(String customer) {
+        this.customer = customer;
+    }
+
+    public String getMotif() {
+        return motif;
+    }
+
+    public void setMotif(String motif) {
+        this.motif = motif;
+    }
+
+    public float getPrice() {
+        return price;
+    }
+
+    public void setPrice(float price) {
+        this.price = price;
+    }
+
+    public float getTimeInvestment() {
+        return timeInvestment;
+    }
+
+    public void setTimeInvestment(float timeInvestment) {
+        this.timeInvestment = timeInvestment;
+    }
+
+    public String getRemark() {
+        return remark;
+    }
+
+    public void setRemark(String remark) {
+        this.remark = remark;
+    }
+
+    public String getMaterialConsumption() {
+        return materialConsumption;
+    }
+
+    public void setMaterialConsumption(String materialConsumption) {
+        this.materialConsumption = materialConsumption;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof Turnover)) {
+            return false;
+        }
+        Turnover turnover = (Turnover) obj;
+        boolean equals = true;
+
+        equals &= id == null && turnover.getId() == null || id.equals(turnover.getId());
+
+        equals &= username == null && turnover.getUsername() == null || username.equals(turnover.getUsername());
+
+        equals &= customer == null && turnover.getCustomer() == null || customer.equals(turnover.getCustomer());
+
+        equals &= motif == null && turnover.getMotif() == null || motif.equals(turnover.getMotif());
+
+        equals &= price == turnover.getPrice();
+
+        equals &= timeInvestment == turnover.getTimeInvestment();
+
+        equals &= remark == null && turnover.getRemark() == null || remark.equals(turnover.getRemark());
+
+        equals &= materialConsumption == null && turnover.getMaterialConsumption() == null
+                || materialConsumption.equals(turnover.getMaterialConsumption());
+
+        return equals;
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/model/User.java

@@ -0,0 +1,133 @@
+package de.champonthis.buntspecht.model;
+
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+
+import jakarta.persistence.CollectionTable;
+import jakarta.persistence.Column;
+import jakarta.persistence.ElementCollection;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Lob;
+import jakarta.persistence.Table;
+import jakarta.persistence.Transient;
+
+@Entity
+@Table(name = "users")
+@JsonInclude(Include.NON_EMPTY)
+public class User {
+
+	@Id
+	@Column(name = "username", nullable = false)
+	private String username;
+	@Column(name = "external_id", nullable = true)
+	private String externalId;
+	@Column(name = "name", nullable = true)
+	private String name;
+	@JsonIgnore
+	@Column(name = "password_hash", nullable = true)
+	private String passwordHash;
+	@ElementCollection(fetch = FetchType.EAGER)
+	@CollectionTable(name = "users_roles")
+	private List<String> roles;
+	@Lob
+	@Column(name = "about", nullable = true, length = 100000)
+	private String about;
+	@Column(name = "email", nullable = true)
+	private String email;
+	@Column(name = "locale", nullable = true, columnDefinition = "varchar(255) default 'de'")
+	private String locale;
+	@Column(name = "dark_theme", nullable = true, columnDefinition = "boolean default false")
+	private boolean darkTheme;
+	@Transient
+	private Map<String, Object> metadata;
+
+	public String getUsername() {
+		return username;
+	}
+
+	public void setUsername(String username) {
+		this.username = username;
+	}
+
+	public String getExternalId() {
+		return externalId;
+	}
+
+	public void setExternalId(String externalId) {
+		this.externalId = externalId;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getPasswordHash() {
+		return passwordHash;
+	}
+
+	public void setPasswordHash(String passwordHash) {
+		this.passwordHash = passwordHash;
+	}
+
+	public List<String> getRoles() {
+		return roles;
+	}
+
+	public void setRoles(List<String> roles) {
+		this.roles = roles;
+	}
+
+	public String getAbout() {
+		return about;
+	}
+
+	public void setAbout(String about) {
+		this.about = about;
+	}
+
+	public String getEmail() {
+		return email;
+	}
+
+	public void setEmail(String email) {
+		this.email = email;
+	}
+
+	public String getLocale() {
+		return locale;
+	}
+
+	public void setLocale(String locale) {
+		this.locale = locale;
+	}
+
+	public boolean isDarkTheme() {
+		return darkTheme;
+	}
+
+	public void setDarkTheme(boolean darkTheme) {
+		this.darkTheme = darkTheme;
+	}
+
+	public Map<String, Object> getMetadata() {
+		if (metadata == null) {
+			metadata = Map.of();
+		}
+		return metadata;
+	}
+
+	public void setMetadata(Map<String, Object> metadata) {
+		this.metadata = metadata;
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/repository/SystemPropertyRepository.java

@@ -0,0 +1,14 @@
+package de.champonthis.buntspecht.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.champonthis.buntspecht.model.SystemProperty;
+
+
+@Repository
+public interface SystemPropertyRepository
+		extends JpaRepository<SystemProperty, String>, QuerydslPredicateExecutor<SystemProperty> {
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/repository/TurnoverRepository.java

@@ -0,0 +1,12 @@
+package de.champonthis.buntspecht.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.champonthis.buntspecht.model.Turnover;
+
+@Repository
+public interface TurnoverRepository extends JpaRepository<Turnover, Long>, QuerydslPredicateExecutor<Turnover> {
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/repository/UserRepository.java

@@ -0,0 +1,13 @@
+package de.champonthis.buntspecht.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.stereotype.Repository;
+
+import de.champonthis.buntspecht.model.User;
+
+
+@Repository
+public interface UserRepository extends JpaRepository<User, String>, QuerydslPredicateExecutor<User> {
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/LocalRememberMeServices.java

@@ -0,0 +1,37 @@
+package de.champonthis.buntspecht.security;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenBasedRememberMeServices;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;
+
+
+public class LocalRememberMeServices extends PersistentTokenBasedRememberMeServices {
+
+	
+	public LocalRememberMeServices(String key, UserDetailsService userDetailsService,
+			PersistentTokenRepository tokenRepository) {
+		super(key, userDetailsService, tokenRepository);
+	}
+
+	/*
+	 * @see org.springframework.security.web.authentication.rememberme.
+	 * AbstractRememberMeServices#rememberMeRequested(javax.servlet.http.
+	 * HttpServletRequest, java.lang.String)
+	 */
+	@Override
+	protected boolean rememberMeRequested(HttpServletRequest request, String parameter) {
+		Object value = request.getAttribute(parameter);
+		if (value != null) {
+			String paramValue = value.toString();
+			if (paramValue.equalsIgnoreCase("true") || paramValue.equalsIgnoreCase("on")
+					|| paramValue.equalsIgnoreCase("yes") || paramValue.equals("1")) {
+				return true;
+			}
+		}
+
+		return super.rememberMeRequested(request, parameter);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/LocalUserDetails.java

@@ -0,0 +1,19 @@
+package de.champonthis.buntspecht.security;
+
+import java.util.Collection;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.User;
+
+
+public class LocalUserDetails extends User {
+
+	
+	private static final long serialVersionUID = 1L;
+
+	
+	public LocalUserDetails(String username, String password, Collection<? extends GrantedAuthority> authorities) {
+		super(username, password, authorities);
+	}
+
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/PasswordEncoderConfig.java

@@ -0,0 +1,15 @@
+package de.champonthis.buntspecht.security;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.crypto.argon2.Argon2PasswordEncoder;
+
+@Configuration
+public class PasswordEncoderConfig {
+
+	
+	@Bean(name = "passwordEncoder")
+	public Argon2PasswordEncoder passwordEncoder() {
+		return Argon2PasswordEncoder.defaultsForSpringSecurity_v5_8();
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/SecurityConfig.java

@@ -0,0 +1,113 @@
+package de.champonthis.buntspecht.security;
+
+import java.util.Collections;
+import java.util.List;
+
+import javax.sql.DataSource;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.HttpStatusEntryPoint;
+import org.springframework.security.web.authentication.RememberMeServices;
+import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
+import org.springframework.security.web.authentication.logout.HttpStatusReturningLogoutSuccessHandler;
+import org.springframework.security.web.authentication.rememberme.JdbcTokenRepositoryImpl;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenBasedRememberMeServices;
+import org.springframework.security.web.authentication.rememberme.PersistentTokenRepository;
+import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.CorsConfigurationSource;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.security.handler.FormAuthenticationFailureHandler;
+import de.champonthis.buntspecht.security.handler.OAuth2AuthenticationSuccessHandler;
+
+@EnableWebSecurity
+@EnableMethodSecurity(prePostEnabled = true)
+@Configuration
+public class SecurityConfig {
+
+	@Autowired
+	private UserManager userManager;
+	@Autowired
+	private OAuth2AuthenticationSuccessHandler oAuth2AuthenticationSuccessHandler;
+	@Autowired
+	private DataSource dataSource;
+	@Value("${loginUrl:/login}")
+	private String loginUrl;
+	@Value("${loginTargetUrl:/}")
+	private String loginTargetUrl;
+	@Value("${spring.security.oauth2.client:false}")
+	private boolean oauth2Enabled;
+
+	@Bean
+	public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+
+		if (oauth2Enabled) {
+			oAuth2AuthenticationSuccessHandler.setDefaultTargetUrl(loginTargetUrl);
+			oAuth2AuthenticationSuccessHandler.setRememberMeServices(rememberMeServices());
+		}
+
+		http
+				// crsf
+				.csrf((csrf) -> csrf.disable())
+				// cors
+				// .cors().configurationSource(corsConfigurationSource()).and()
+				// anonymous
+				.anonymous((anonymous) -> anonymous.disable())
+				// login
+				.formLogin((formLogin) -> formLogin.loginPage("/login").defaultSuccessUrl(loginTargetUrl)
+						.failureHandler(new FormAuthenticationFailureHandler(loginUrl)))
+				// remember me
+				.rememberMe((rememberMe) -> rememberMe.rememberMeServices(rememberMeServices()))
+				// logout
+				.logout((logout) -> logout.logoutUrl("/logout")
+						.logoutSuccessHandler(new HttpStatusReturningLogoutSuccessHandler(HttpStatus.OK)))
+				// exception
+				.exceptionHandling((exceptionHandling) -> exceptionHandling
+						.defaultAuthenticationEntryPointFor(new HttpStatusEntryPoint(HttpStatus.UNAUTHORIZED),
+								new AntPathRequestMatcher("/api/**")));
+
+		if (oauth2Enabled) {
+			http.oauth2Login((oauth2Login) -> oauth2Login.successHandler(oAuth2AuthenticationSuccessHandler)
+					.failureHandler(new SimpleUrlAuthenticationFailureHandler(loginUrl + "?externalError"))
+					.loginPage("/login"));
+		}
+
+		return http.build();
+	}
+
+	@Bean
+	public PersistentTokenRepository persistentTokenRepository() {
+		JdbcTokenRepositoryImpl tokenRepository = new JdbcTokenRepositoryImpl();
+		tokenRepository.setDataSource(dataSource);
+		return tokenRepository;
+	}
+
+	@Bean
+	public RememberMeServices rememberMeServices() {
+		PersistentTokenBasedRememberMeServices rememberMeServices = new LocalRememberMeServices("remember-me",
+				userManager, persistentTokenRepository());
+		return rememberMeServices;
+	}
+
+	@Bean
+	public CorsConfigurationSource corsConfigurationSource() {
+		CorsConfiguration configuration = new CorsConfiguration();
+		configuration.setAllowedOriginPatterns(List.of("*"));
+		configuration.setAllowedMethods(Collections.singletonList("*"));
+		configuration.setAllowCredentials(true);
+		configuration.setAllowedHeaders(Collections.singletonList("*"));
+		UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+		source.registerCorsConfiguration("/**", configuration);
+		return source;
+	}
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/handler/FormAuthenticationFailureHandler.java

@@ -0,0 +1,28 @@
+package de.champonthis.buntspecht.security.handler;
+
+import java.io.IOException;
+
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+public class FormAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {
+
+    private String failureUrl;
+
+    public FormAuthenticationFailureHandler(String failureUrl) {
+        super(failureUrl);
+        this.failureUrl = failureUrl;
+    }
+
+    @Override
+    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
+            AuthenticationException exception) throws IOException, ServletException {
+        setDefaultFailureUrl(failureUrl + "?error&username=" + request.getParameter("username"));
+        super.onAuthenticationFailure(request, response, exception);
+        setDefaultFailureUrl(failureUrl);
+    }
+}

buntspecht-backend/src/main/java/de/champonthis/buntspecht/security/handler/OAuth2AuthenticationSuccessHandler.java

@@ -0,0 +1,68 @@
+package de.champonthis.buntspecht.security.handler;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.web.authentication.RememberMeServices;
+import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
+import org.springframework.stereotype.Component;
+
+import de.champonthis.buntspecht.businesslogic.UserManager;
+import de.champonthis.buntspecht.model.User;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+
+
+@Component
+public class OAuth2AuthenticationSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler {
+
+	@Autowired
+	private UserManager userManager;
+
+	private RememberMeServices rememberMeServices;
+
+	/*
+	 * @see org.springframework.security.web.authentication.
+	 * SavedRequestAwareAuthenticationSuccessHandler#onAuthenticationSuccess(javax.
+	 * servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
+	 * org.springframework.security.core.Authentication)
+	 */
+	@Override
+	public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
+			Authentication authentication) throws IOException, ServletException {
+		User user = userManager.getByAuth(authentication);
+
+		UserDetails userDetails = userManager.loadUserByUsername(user.getUsername());
+
+		List<GrantedAuthority> authorities = new ArrayList<>();
+		authorities.addAll(authentication.getAuthorities());
+		authorities.addAll(userDetails.getAuthorities());
+
+		UsernamePasswordAuthenticationToken newAuthentication = new UsernamePasswordAuthenticationToken(userDetails,
+				null, authorities);
+
+		SecurityContextHolder.getContext().setAuthentication(newAuthentication);
+
+		if (rememberMeServices != null) {
+			request.setAttribute("remember-me", "true");
+			rememberMeServices.loginSuccess(request, response, newAuthentication);
+		}
+
+		handle(request, response, newAuthentication);
+		clearAuthenticationAttributes(request);
+	}
+
+	
+	public void setRememberMeServices(RememberMeServices rememberMeServices) {
+		this.rememberMeServices = rememberMeServices;
+	}
+
+}

buntspecht-frontend/.browserslistrc

@@ -0,0 +1,18 @@
+# This file is used by the build system to adjust CSS and JS output to support the specified browsers below.
+# For additional information regarding the format and rule options, please see:
+# https://github.com/browserslist/browserslist#queries
+
+# For the full list of supported browsers by the Angular framework, please see:
+# https://angular.io/guide/browser-support
+
+# You can see what browsers were selected by your queries by running:
+#   npx browserslist
+
+last 1 Chrome version
+last 1 Firefox version
+last 2 Edge major versions
+last 2 Safari major versions
+last 2 iOS major versions
+Firefox ESR
+not IE 9-10 # Angular support for IE 9-10 has been deprecated and will be removed as of Angular v11. To opt-in, remove the 'not' prefix on this line.
+not IE 11 # Angular supports IE 11 only as an opt-in. To opt-in, remove the 'not' prefix on this line.

buntspecht-frontend/.editorconfig

@@ -0,0 +1,16 @@
+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.ts]
+quote_type = single
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

buntspecht-frontend/.gitignore

@@ -0,0 +1,49 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# compiled output
+/dist
+/tmp
+/out-tsc
+# Only exists if Bazel was run
+/bazel-out
+
+# dependencies
+/node_modules
+
+# profiling files
+chrome-profiler-events*.json
+speed-measure-plugin*.json
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history/*
+
+# misc
+/.angular/cache
+/.sass-cache
+/connect.lock
+/coverage
+/libpeerconnection.log
+npm-debug.log
+yarn-error.log
+testem.log
+/typings
+
+# System Files
+.DS_Store
+Thumbs.db
+
+.vscode

buntspecht-frontend/LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
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+
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+<https://www.gnu.org/licenses/>.

buntspecht-frontend/README.md

@@ -0,0 +1,3 @@
+# buntspecht frontend
+
+Frontend of buntspecht created with Angular Framework.

buntspecht-frontend/angular.json

@@ -0,0 +1,132 @@
+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "buntspecht-frontent": {
+      "projectType": "application",
+      "schematics": {
+        "@schematics/angular:component": {
+          "style": "scss"
+        }
+      },
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:browser",
+          "options": {
+            "outputPath": "dist/buntspecht",
+            "index": "src/index.html",
+            "main": "src/main.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.app.json",
+            "assets": [
+              "src/.htaccess",
+              "src/favicon.ico",
+              "src/assets",
+              "src/manifest.webmanifest"
+            ],
+            "styles": [
+              "src/styles.scss"
+            ],
+            "scripts": [],
+            "serviceWorker": true,
+            "ngswConfigPath": "ngsw-config.json",
+            "vendorChunk": true,
+            "extractLicenses": false,
+            "buildOptimizer": false,
+            "sourceMap": true,
+            "optimization": false,
+            "namedChunks": true,
+            "allowedCommonJsDependencies": [
+              "moment"
+            ]
+          },
+          "configurations": {
+            "production": {
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.prod.ts"
+                }
+              ],
+              "optimization": true,
+              "outputHashing": "all",
+              "sourceMap": false,
+              "namedChunks": false,
+              "extractLicenses": true,
+              "vendorChunk": false,
+              "buildOptimizer": true,
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "2mb",
+                  "maximumError": "5mb"
+                },
+                {
+                  "type": "anyComponentStyle",
+                  "maximumWarning": "6kb",
+                  "maximumError": "10kb"
+                }
+              ]
+            }
+          },
+          "defaultConfiguration": ""
+        },
+        "serve": {
+          "builder": "@angular-devkit/build-angular:dev-server",
+          "options": {
+            "buildTarget": "buntspecht-frontent:build",
+            "port": 4201
+          },
+          "configurations": {
+            "production": {
+              "buildTarget": "buntspecht-frontent:build:production"
+            }
+          }
+        },
+        "extract-i18n": {
+          "builder": "@angular-devkit/build-angular:extract-i18n",
+          "options": {
+            "buildTarget": "buntspecht-frontent:build"
+          }
+        },
+        "test": {
+          "builder": "@angular-devkit/build-angular:karma",
+          "options": {
+            "main": "src/test.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.spec.json",
+            "karmaConfig": "karma.conf.js",
+            "assets": [
+              "src/favicon.ico",
+              "src/assets",
+              "src/manifest.webmanifest"
+            ],
+            "styles": [
+              "src/styles.scss"
+            ],
+            "scripts": []
+          }
+        },
+        "e2e": {
+          "builder": "@angular-devkit/build-angular:protractor",
+          "options": {
+            "protractorConfig": "e2e/protractor.conf.js",
+            "devServerTarget": "buntspecht-frontent:serve"
+          },
+          "configurations": {
+            "production": {
+              "devServerTarget": "buntspecht-frontent:serve:production"
+            }
+          }
+        }
+      }
+    }
+  },
+  "cli": {
+    "analytics": false
+  }
+}

buntspecht-frontend/e2e/protractor.conf.js

@@ -0,0 +1,34 @@
+// @ts-check
+// Protractor configuration file, see link for more information
+// https://github.com/angular/protractor/blob/master/lib/config.ts
+
+const { SpecReporter, StacktraceOption } = require('jasmine-spec-reporter');
+
+
+exports.config = {
+  allScriptsTimeout: 11000,
+  specs: [
+    './src/**/*.e2e-spec.ts'
+  ],
+  capabilities: {
+    browserName: 'chrome'
+  },
+  directConnect: true,
+  baseUrl: 'http://localhost:4200/',
+  framework: 'jasmine',
+  jasmineNodeOpts: {
+    showColors: true,
+    defaultTimeoutInterval: 30000,
+    print: function() {}
+  },
+  onPrepare() {
+    require('ts-node').register({
+      project: require('path').join(__dirname, './tsconfig.json')
+    });
+    jasmine.getEnv().addReporter(new SpecReporter({
+      spec: {
+        displayStacktrace: StacktraceOption.PRETTY
+      }
+    }));
+  }
+};

buntspecht-frontend/e2e/src/app.e2e-spec.ts

@@ -0,0 +1,23 @@
+import { AppPage } from './app.po';
+import { browser, logging } from 'protractor';
+
+describe('workspace-project App', () => {
+  let page: AppPage;
+
+  beforeEach(() => {
+    page = new AppPage();
+  });
+
+  it('should display welcome message', () => {
+    page.navigateTo();
+    expect(page.getTitleText()).toEqual('buntspecht-frontent app is running!');
+  });
+
+  afterEach(async () => {
+    // Assert that there are no errors emitted from the browser
+    const logs = await browser.manage().logs().get(logging.Type.BROWSER);
+    expect(logs).not.toContain(jasmine.objectContaining({
+      level: logging.Level.SEVERE,
+    } as logging.Entry));
+  });
+});

buntspecht-frontend/e2e/src/app.po.ts

@@ -0,0 +1,11 @@
+import { browser, by, element } from 'protractor';
+
+export class AppPage {
+  navigateTo(): Promise<unknown> {
+    return browser.get(browser.baseUrl) as Promise<unknown>;
+  }
+
+  getTitleText(): Promise<string> {
+    return element(by.css('app-root .content span')).getText() as Promise<string>;
+  }
+}

buntspecht-frontend/e2e/tsconfig.json

@@ -0,0 +1,14 @@
+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/e2e",
+    "module": "commonjs",
+    "target": "es2018",
+    "types": [
+      "jasmine",
+      "jasminewd2",
+      "node"
+    ]
+  }
+}

buntspecht-frontend/karma.conf.js

@@ -0,0 +1,32 @@
+// Karma configuration file, see link for more information
+// https://karma-runner.github.io/1.0/config/configuration-file.html
+
+module.exports = function (config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-chrome-launcher'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-coverage-istanbul-reporter'),
+      require('@angular-devkit/build-angular/plugins/karma')
+    ],
+    client: {
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    coverageIstanbulReporter: {
+      dir: require('path').join(__dirname, './coverage/buntspecht-frontent'),
+      reports: ['html', 'lcovonly', 'text-summary'],
+      fixWebpackSourcePaths: true
+    },
+    reporters: ['progress', 'kjhtml'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    restartOnFileChange: true
+  });
+};

buntspecht-frontend/ngsw-config.json

@@ -0,0 +1,45 @@
+{
+  "$schema": "./node_modules/@angular/service-worker/config/schema.json",
+  "index": "/index.html",
+  "appData": {
+    "version": "1.5.5"
+  },
+  "assetGroups": [
+    {
+      "name": "app",
+      "installMode": "prefetch",
+      "resources": {
+        "files": [
+          "/favicon.ico",
+          "/index.html",
+          "/manifest.webmanifest",
+          "/*.css",
+          "/*.js"
+        ]
+      }
+    },
+    {
+      "name": "assets",
+      "installMode": "prefetch",
+      "resources": {
+        "files": [
+          "/assets/**",
+          "/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)"
+        ]
+      }
+    }
+  ],
+  "dataGroups": [
+    {
+      "name": "api",
+      "urls": [
+        "/api"
+      ],
+      "cacheConfig": {
+        "maxSize": 0,
+        "maxAge": "0u",
+        "strategy": "freshness"
+      }
+    }
+  ]
+}

buntspecht-frontend/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "buntspecht-web",
+  "version": "0.1.0",
+  "license": "AGPL3",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "test": "ng test",
+    "lint": "ng lint",
+    "e2e": "ng e2e"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/animations": "^18.2.7",
+    "@angular/cdk": "^18.2.6",
+    "@angular/common": "^18.2.7",
+    "@angular/compiler": "^18.2.7",
+    "@angular/core": "^18.2.7",
+    "@angular/forms": "^18.2.7",
+    "@angular/material": "^18.2.6",
+    "@angular/material-moment-adapter": "^18.2.6",
+    "@angular/platform-browser": "^18.2.7",
+    "@angular/platform-browser-dynamic": "^18.2.7",
+    "@angular/router": "^18.2.7",
+    "@angular/service-worker": "^18.2.7",
+    "moment": "^2.30.1",
+    "rxjs": "~7.8.1",
+    "tslib": "^2.7.0",
+    "zone.js": "~0.14.10"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "^18.2.7",
+    "@angular/cli": "^18.2.7",
+    "@angular/compiler-cli": "^18.2.7",
+    "@angular/localize": "^18.2.7",
+    "@types/jasmine": "^5.1.4",
+    "jasmine-core": "~5.3.0",
+    "karma": "^6.4.4",
+    "karma-chrome-launcher": "~3.2.0",
+    "karma-coverage": "~2.2.1",
+    "karma-jasmine": "~5.1.0",
+    "karma-jasmine-html-reporter": "^2.1.0",
+    "typescript": "~5.5.4"
+  }
+}

buntspecht-frontend/src/.htaccess

@@ -0,0 +1,8 @@
+RewriteEngine On
+
+RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -f [OR]
+RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -d
+RewriteCond %{REQUEST_URI} !^/api/.*$
+RewriteRule ^ - [L]
+
+RewriteRule ^ /index.html [L]

buntspecht-frontend/src/app/app-routing.module.ts

@@ -0,0 +1,42 @@
+import { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+
+import { AnonymousGuard, AuthAdminGuard, AuthenticatedGuard } from './auth/auth.guard';
+import { PageLogin } from './pages/login/login.page';
+import { PageNotFound } from './pages/notfound/notfound.page';
+import { PageProfile } from './pages/profile/profile.page';
+
+import { PageManagement } from './pages/management/management.page';
+import { PagePassword } from './pages/password/password.page';
+import { PageTurnover } from './pages/turnover/turnover.page';
+import { PageTurnoversManage } from './pages/turnovers/manage/manage.page';
+import { PageTurnovers } from './pages/turnovers/turnovers.page';
+import { PageUnavailable } from './pages/unavailable/unavailable.page';
+import { PageUsers } from './pages/users/users.page';
+import { UiMain } from './ui/main/main.ui';
+
+
+const routes: Routes = [
+  { path: 'login', component: PageLogin, canActivate: [AnonymousGuard] },
+  {
+    path: '', component: UiMain, children: [
+      { path: '', component: PageTurnovers, canActivate: [AuthenticatedGuard] },
+      { path: 'password', component: PagePassword, canActivate: [AuthenticatedGuard] },
+      { path: 'profile', component: PageProfile, canActivate: [AuthenticatedGuard] },
+      { path: 'create', component: PageTurnover, canActivate: [AuthenticatedGuard] },
+      { path: 't/:id', component: PageTurnover, canActivate: [AuthenticatedGuard] },
+      { path: 't', component: PageTurnoversManage, canActivate: [AuthAdminGuard] },
+      { path: 'm', component: PageManagement, canActivate: [AuthAdminGuard] },
+      { path: 'u', component: PageUsers, canActivate: [AuthAdminGuard] },
+      { path: 'u/:username', component: PageProfile, canActivate: [AuthAdminGuard] },
+      { path: 'unavailable', component: PageUnavailable },
+      { path: '**', component: PageNotFound, pathMatch: 'full', canActivate: [AuthenticatedGuard] }
+    ]
+  }
+];
+
+@NgModule({
+  imports: [RouterModule.forRoot(routes, { onSameUrlNavigation: 'reload' })],
+  exports: [RouterModule]
+})
+export class AppRoutingModule { }

buntspecht-frontend/src/app/app.component.html

@@ -0,0 +1 @@
+<router-outlet></router-outlet>

buntspecht-frontend/src/app/app.component.ts

@@ -0,0 +1,23 @@
+import { Component } from '@angular/core';
+
+import { I18nService } from './services/i18n.service';
+
+@Component({
+  selector: 'app-root',
+  templateUrl: './app.component.html'
+})
+
+export class AppComponent {
+
+  constructor(private i18n: I18nService) {
+  }
+
+  ngOnInit() {
+    window.document.title = this.i18n.get('buntspecht', []);
+
+    if (localStorage.getItem("buntspecht.darkTheme") == "true") {
+      window.document.body.classList.add("dark-theme");
+    }
+  }
+
+}

buntspecht-frontend/src/app/app.module.ts

@@ -0,0 +1,119 @@
+
+import { DatePipe } from '@angular/common';
+import { HTTP_INTERCEPTORS, HttpHandler, HttpInterceptor, HttpRequest, provideHttpClient } from '@angular/common/http';
+import { APP_INITIALIZER, Injectable, NgModule } from '@angular/core';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { MAT_DATE_LOCALE } from '@angular/material/core';
+import { MatPaginatorIntl } from '@angular/material/paginator';
+import { BrowserModule } from '@angular/platform-browser';
+import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
+import * as moment from 'moment';
+import { AppRoutingModule } from './app-routing.module';
+import { MaterialModule } from './material/material.module';
+
+import { AutofocusDirective } from './material/autofocus';
+
+import { AppComponent } from './app.component';
+import { PageLogin } from './pages/login/login.page';
+import { PageNotFound } from './pages/notfound/notfound.page';
+import { PageProfile } from './pages/profile/profile.page';
+import { PageUnavailable } from './pages/unavailable/unavailable.page';
+import { UiMain } from './ui/main/main.ui';
+import { I18nEmptyPipe, I18nPipe } from './utils/i18n.pipe';
+import { MomentPipe } from './utils/moment.pipe';
+
+import { ServiceWorkerModule } from '@angular/service-worker';
+import { environment } from '../environments/environment';
+import { PagePassword } from './pages/password/password.page';
+import { PageTurnover } from './pages/turnover/turnover.page';
+import { PageTurnoversManage } from './pages/turnovers/manage/manage.page';
+import { PageTurnovers } from './pages/turnovers/turnovers.page';
+import { PageUsers } from './pages/users/users.page';
+import { I18nPaginatorIntl, I18nService } from './services/i18n.service';
+import { UiTurnovers } from './ui/turnovers/turnovers.ui';
+import { MAT_FORM_FIELD_DEFAULT_OPTIONS } from '@angular/material/form-field';
+import { ConfirmDialog } from './ui/confirm/confirm.component';
+import { PageManagement } from './pages/management/management.page';
+
+
+export function fetchI18n(i18n: I18nService) {
+  return () => i18n.fetch();
+}
+
+
+export function setMaterialDate(i18n: I18nService) {
+  let locale = i18n.getLocale();
+
+  if (locale == 'de-informal') {
+    locale = 'de';
+  }
+
+  moment.locale(locale);
+  return locale;
+}
+
+@Injectable()
+export class XhrInterceptor implements HttpInterceptor {
+
+  intercept(req: HttpRequest<any>, next: HttpHandler) {
+    const xhr = req.clone({
+      headers: req.headers.set('X-Requested-With', 'XMLHttpRequest').set('Content-Type', 'application/json;charset=UTF-8'), withCredentials: true
+    });
+    return next.handle(xhr);
+  }
+}
+
+@NgModule({
+  declarations: [
+    AutofocusDirective,
+    I18nPipe,
+    I18nEmptyPipe,
+    MomentPipe,
+    AppComponent,
+    PageTurnovers,
+    PageTurnoversManage,
+    PageTurnover,
+    PageLogin,
+    PageManagement,
+    PageNotFound,
+    PagePassword,
+    PageProfile,
+    PageUnavailable,
+    PageUsers,
+    UiMain,
+    UiTurnovers,
+    ConfirmDialog
+  ],
+  imports: [
+    BrowserModule,
+    AppRoutingModule,
+    BrowserAnimationsModule,
+    MaterialModule,
+    FormsModule,
+    ReactiveFormsModule,
+    ServiceWorkerModule.register('ngsw-worker.js', { enabled: environment.production, registrationStrategy: 'registerWhenStable:30000' }),
+  ],
+  exports: [MaterialModule],
+  providers: [
+    provideHttpClient(),
+    { provide: APP_INITIALIZER, useFactory: fetchI18n, deps: [I18nService], multi: true },
+    { provide: MAT_DATE_LOCALE, useFactory: setMaterialDate, deps: [I18nService], multi: true },
+    { provide: HTTP_INTERCEPTORS, useClass: XhrInterceptor, multi: true },
+    DatePipe,
+    {
+      provide: MatPaginatorIntl, useFactory: (i18n: I18nService) => {
+        const service = new I18nPaginatorIntl();
+        service.injectI18n(i18n)
+        return service;
+      }, deps: [I18nService]
+    },
+    {
+      provide: MAT_FORM_FIELD_DEFAULT_OPTIONS,
+      useValue: {
+        subscriptSizing: 'dynamic'
+      }
+    }],
+  bootstrap: [AppComponent],
+})
+export class AppModule {
+}

buntspecht-frontend/src/app/auth/auth.guard.ts

@@ -0,0 +1,133 @@
+import { Injectable } from '@angular/core';
+import { Router } from '@angular/router';
+import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
+import { AuthService } from '../services/auth.service';
+import { RequestError } from '../services/requesterror';
+import { UserService } from '../services/user.service';
+import { I18nService } from '../services/i18n.service';
+
+
+@Injectable({
+    providedIn: 'root'
+})
+export class AuthUpdateGuard implements CanActivate {
+    constructor(private authService: AuthService) { }
+
+    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
+        this.authService.getAuth().catch(function (error) { });
+        return true;
+    }
+}
+
+@Injectable({
+    providedIn: 'root'
+})
+export class AuthGuard implements CanActivate {
+    constructor(private authService: AuthService, private router: Router) { }
+
+    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
+        const that = this;
+        return this.authService.getAuth().then(response => {
+            return true;
+        }).catch(function (error) {
+            if (error instanceof RequestError && (error as RequestError).getResponse().status == 401) {
+                return true;
+            }
+
+            return that.router.navigateByUrl(that.router.parseUrl('/unavailable?target=' + encodeURIComponent(state.url)), { skipLocationChange: true });
+        });
+    }
+}
+
+@Injectable({
+    providedIn: 'root'
+})
+export class AuthenticatedGuard implements CanActivate {
+    constructor(private authService: AuthService, private userService: UserService, private i18nService: I18nService, private router: Router) { }
+
+    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
+        const that = this;
+        return this.authService.getAuth().then((data: any) => {
+            this.userService.get().subscribe({
+                next: (user: any) => {
+                    let updateLocale = false;
+                    let updateTheme = false;
+                    let darktheme = 'false';
+
+                    if (user.darkTheme) {
+                        darktheme = 'true';
+                    }
+
+                    if (darktheme != localStorage.getItem("buntspecht.darkTheme")) {
+                        localStorage.setItem("buntspecht.darkTheme", darktheme);
+                        updateTheme = true;
+                    }
+
+                    if (this.i18nService.locales.indexOf(user.locale) != -1 && localStorage.getItem("buntspecht.locale") != user.locale) {
+                        if (this.i18nService.locale != user.locale) {
+                            localStorage.setItem("buntspecht.locale", user.locale);
+                            updateLocale = true;
+                        }
+                    }
+                    if (updateLocale || updateTheme) {
+                        window.location.reload();
+                    }
+                }
+            });
+
+            return true;
+        }).catch(function (error) {
+            if (error instanceof RequestError && (error as RequestError).getResponse().status == 401) {
+                return that.router.navigateByUrl(that.router.parseUrl('/login?target=' + encodeURIComponent(state.url)));
+            }
+
+            return that.router.navigateByUrl(that.router.parseUrl('/unavailable?target=' + encodeURIComponent(state.url)), { skipLocationChange: true });
+        });
+    }
+}
+
+
+
+@Injectable({
+    providedIn: 'root'
+})
+export class AuthAdminGuard implements CanActivate {
+    constructor(private authService: AuthService, private router: Router) { }
+
+    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
+        const that = this;
+        return this.authService.getAuth().then(data => {
+            if (data.authorities && data.authorities.find((role) => role.authority == 'ROLE_ADMIN') != undefined) {
+                return true;
+            }
+            return that.router.navigateByUrl(that.router.parseUrl('/not-found'), { skipLocationChange: true });
+        }).catch(function (error) {
+            if (error instanceof RequestError && (error as RequestError).getResponse().status == 401) {
+                return that.router.navigateByUrl(that.router.parseUrl('/login?target=' + encodeURIComponent(state.url)));
+            }
+
+            return that.router.navigateByUrl(that.router.parseUrl('/not-found'), { skipLocationChange: true });
+        });
+    }
+}
+
+@Injectable({
+    providedIn: 'root'
+})
+export class AnonymousGuard implements CanActivate {
+    constructor(private authService: AuthService, private router: Router) { }
+
+    canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
+        const that = this;
+        return this.authService.getAuth().then((data: any) => {
+            this.router.navigateByUrl('/');
+            return false;
+        }).catch(function (error) {
+            if (error instanceof RequestError && (error as RequestError).getResponse().status == 401) {
+                return true;
+            }
+            return that.router.navigateByUrl(that.router.parseUrl('/unavailable?target=' + encodeURIComponent(state.url)), { replaceUrl: true });
+        });
+    }
+
+}

buntspecht-frontend/src/app/material/autofocus.ts

@@ -0,0 +1,17 @@
+import { Directive, ElementRef, OnInit } from '@angular/core';
+
+@Directive({
+  selector: '[matAutofocus]',
+})
+export class AutofocusDirective implements OnInit {
+
+  constructor(private element: ElementRef) { }
+
+  ngOnInit() {
+    setTimeout(() => {
+      this.element.nativeElement.focus();
+      this.element.nativeElement.scrollIntoView();
+    })
+  }
+
+}

buntspecht-frontend/src/app/material/material.module.ts

@@ -0,0 +1,126 @@
+import {NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+
+// Material Form Controls
+import {MatAutocompleteModule} from '@angular/material/autocomplete';
+import {MatCheckboxModule} from '@angular/material/checkbox';
+import {MatDatepickerModule} from '@angular/material/datepicker';
+import {MatFormFieldModule} from '@angular/material/form-field';
+import {MatInputModule} from '@angular/material/input';
+import {MatRadioModule} from '@angular/material/radio';
+import {MatSelectModule} from '@angular/material/select';
+import {MatSliderModule} from '@angular/material/slider';
+import {MatSlideToggleModule} from '@angular/material/slide-toggle';
+// Material Navigation
+import {MatMenuModule} from '@angular/material/menu';
+import {MatSidenavModule} from '@angular/material/sidenav';
+import {MatToolbarModule} from '@angular/material/toolbar';
+// Material Layout
+import {MatCardModule} from '@angular/material/card';
+import {MatDividerModule} from '@angular/material/divider';
+import {MatExpansionModule} from '@angular/material/expansion';
+import {MatGridListModule} from '@angular/material/grid-list';
+import {MatListModule} from '@angular/material/list';
+import {MatStepperModule} from '@angular/material/stepper';
+import {MatTabsModule} from '@angular/material/tabs';
+import {MatTreeModule} from '@angular/material/tree';
+// Material Buttons & Indicators
+import {MatButtonModule} from '@angular/material/button';
+import {MatButtonToggleModule} from '@angular/material/button-toggle';
+import {MatBadgeModule} from '@angular/material/badge';
+import {MatChipsModule} from '@angular/material/chips';
+import {MatIconModule} from '@angular/material/icon';
+import {MatProgressSpinnerModule} from '@angular/material/progress-spinner';
+import {MatProgressBarModule} from '@angular/material/progress-bar';
+import {MatRippleModule} from '@angular/material/core';
+// Material Popups & Modals
+import {MatBottomSheetModule} from '@angular/material/bottom-sheet';
+import {MatDialogModule} from '@angular/material/dialog';
+import {MatSnackBarModule} from '@angular/material/snack-bar';
+import {MatTooltipModule} from '@angular/material/tooltip';
+// Material Data tables
+import {MatPaginatorModule} from '@angular/material/paginator';
+import {MatSortModule} from '@angular/material/sort';
+import {MatTableModule} from '@angular/material/table';
+import {MatMomentDateModule} from '@angular/material-moment-adapter';
+
+@NgModule({
+  declarations: [],
+  imports: [
+    CommonModule,
+    MatAutocompleteModule,
+    MatCheckboxModule,
+    MatDatepickerModule,
+    MatFormFieldModule,
+    MatInputModule,
+    MatRadioModule,
+    MatSelectModule,
+    MatSliderModule,
+    MatSlideToggleModule,
+    MatMenuModule,
+    MatSidenavModule,
+    MatToolbarModule,
+    MatCardModule,
+    MatDividerModule,
+    MatExpansionModule,
+    MatGridListModule,
+    MatListModule,
+    MatStepperModule,
+    MatTabsModule,
+    MatTreeModule,
+    MatButtonModule,
+    MatButtonToggleModule,
+    MatBadgeModule,
+    MatChipsModule,
+    MatIconModule,
+    MatProgressSpinnerModule,
+    MatProgressBarModule,
+    MatRippleModule,
+    MatBottomSheetModule,
+    MatDialogModule,
+    MatSnackBarModule,
+    MatTooltipModule,
+    MatPaginatorModule,
+    MatSortModule,
+    MatTableModule,
+    MatMomentDateModule
+  ],
+  exports: [
+    MatAutocompleteModule,
+    MatCheckboxModule,
+    MatDatepickerModule,
+    MatFormFieldModule,
+    MatInputModule,
+    MatRadioModule,
+    MatSelectModule,
+    MatSliderModule,
+    MatSlideToggleModule,
+    MatMenuModule,
+    MatSidenavModule,
+    MatToolbarModule,
+    MatCardModule,
+    MatDividerModule,
+    MatExpansionModule,
+    MatGridListModule,
+    MatListModule,
+    MatStepperModule,
+    MatTabsModule,
+    MatTreeModule,
+    MatButtonModule,
+    MatButtonToggleModule,
+    MatBadgeModule,
+    MatChipsModule,
+    MatIconModule,
+    MatProgressSpinnerModule,
+    MatProgressBarModule,
+    MatRippleModule,
+    MatBottomSheetModule,
+    MatDialogModule,
+    MatSnackBarModule,
+    MatTooltipModule,
+    MatPaginatorModule,
+    MatSortModule,
+    MatTableModule
+  ]
+})
+export class MaterialModule {}

buntspecht-frontend/src/app/pages/login/login.page.html

@@ -0,0 +1,56 @@
+<div class="container">
+    <div class="flex column fill center middle">
+        <form action="{{apiUrl}}/login" method="POST" #loginForm class="box">
+            <mat-card>
+                <mat-card-content>
+                    <img class="logo" src="assets/images/banner.png">
+                    <h2>{{'login.internal' | i18n}}</h2>
+                    <mat-error *ngIf="loginInvalid">
+                        {{'login.invalid' | i18n}}
+                    </mat-error>
+                    <mat-form-field>
+                        <mat-label>{{'login.username' | i18n}}</mat-label>
+                        <input id="username" name="username" matInput required matAutofocus [value]="username">
+                        <mat-error>
+                            {{'login.username.missing' | i18n}}
+                        </mat-error>
+                    </mat-form-field>
+                    <mat-form-field>
+                        <mat-label>{{'login.password' | i18n}}</mat-label>
+                        <input id="password" name="password" matInput type="password" required>
+                        <mat-error>
+                            {{'login.password.invalid.hint' | i18n}}
+                        </mat-error>
+                    </mat-form-field>
+                    <mat-slide-toggle (change)="rememberMe.value = '' + $event.checked">
+                        {{'login.keepSession' | i18n}}
+                    </mat-slide-toggle>
+                    <input #rememberMe id="remember-me" name="remember-me" type="hidden">
+                </mat-card-content>
+                <mat-card-actions>
+                    <button type="submit" (click)="loginForm.submit()" mat-raised-button color="primary"
+                        [disabled]="loginForm.invalid">{{'login' |
+                        i18n}}<mat-icon style="font-size: 1em;">open_in_new
+                        </mat-icon></button>
+                </mat-card-actions>
+            </mat-card>
+        </form>
+
+        <mat-card *ngIf="externals && externals.length > 0" class="box">
+            <mat-card-content>
+                <h2>{{'login.external' | i18n}}</h2>
+                <mat-error *ngIf="externalLoginInvalid">
+                    {{'login.external.invalid' | i18n}}
+                </mat-error>
+            </mat-card-content>
+            <mat-card-actions class="flex wrap">
+                <a class="external-login" (click)="externalLogin(client)" *ngFor="let client of externals"
+                    mat-raised-button color="accent">{{'login.external.client' | i18n:('login.provider.' + client.id |
+                    i18n)}}</a>
+                <mat-slide-toggle [(ngModel)]="autologin">
+                    {{'login.autologin' | i18n}}
+                </mat-slide-toggle>
+            </mat-card-actions>
+        </mat-card>
+    </div>
+</div>

buntspecht-frontend/src/app/pages/login/login.page.scss

@@ -0,0 +1,33 @@
+img.logo {
+  width: 300px;
+  height: auto;
+}
+
+mat-form-field,
+mat-slide-toggle {
+  display: block;
+  margin-bottom: 25px;
+}
+
+a.external-login {
+  margin: 15px 0;
+  flex-basis: 100%;
+  flex-shrink: 0;
+}
+
+.box {
+  margin: 5px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/login/login.page.ts

@@ -0,0 +1,81 @@
+import { Component, ElementRef, OnInit, ViewChild } from '@angular/core';
+import { ActivatedRoute, Router } from '@angular/router';
+
+import { environment } from '../../../environments/environment';
+
+import { AuthService } from '../../services/auth.service';
+
+@Component({
+  selector: 'page-login',
+  templateUrl: './login.page.html',
+  styleUrls: ['./login.page.scss']
+})
+export class PageLogin implements OnInit {
+
+  @ViewChild('loginForm') loginForm: ElementRef;
+  autologin: boolean = false;
+  loginInvalid: boolean;
+  externalLoginInvalid: boolean;
+  apiUrl = environment.apiUrl;
+  targetRoute: string;
+  externals: any[];
+  username: string = '';
+
+  constructor(
+    private authService: AuthService,
+    private router: Router,
+    private route: ActivatedRoute) { }
+
+  async ngOnInit() {
+    this.route.queryParams.subscribe({
+      next: (params) => {
+        if (params['target']) {
+          this.targetRoute = params['target'];
+          this.router.navigate([], { queryParams: { target: null }, queryParamsHandling: 'merge', replaceUrl: true });
+        }
+        if (params['error'] || params['error'] == '') {
+          this.loginInvalid = true;
+          this.router.navigate([], { queryParams: { error: null }, queryParamsHandling: 'merge', replaceUrl: true });
+        }
+        if (params['username']) {
+          this.username = params['username'];
+          this.router.navigate([], { queryParams: { username: null }, queryParamsHandling: 'merge', replaceUrl: true });
+        }
+        if (params['externalError'] || params['externalError'] == '') {
+          this.externalLoginInvalid = true;
+          this.router.navigate([], { queryParams: { externalError: null }, queryParamsHandling: 'merge', replaceUrl: true });
+        }
+      }
+    });
+
+    this.authService.getExternal().subscribe({
+      next: (data: any[]) => {
+        this.externals = data;
+        const autologinClient = localStorage.getItem("buntspecht.autologin");
+        for (let client of this.externals) {
+          if (client.id == autologinClient) {
+            window.location.href = this.apiUrl + "/" + client.loginUrl;
+          }
+        }
+      }
+    })
+
+  }
+
+  ngAfterViewInit(): void {
+    if (this.targetRoute) {
+      this.loginForm.nativeElement.action = this.loginForm.nativeElement.action + "?forward=" + window.location.origin + encodeURIComponent(this.targetRoute);
+    }
+  }
+
+  externalLogin(client: any): void {
+    if (this.autologin) {
+      localStorage.setItem("buntspecht.autologin", client.id);
+    } else {
+      localStorage.removeItem("buntspecht.autologin");
+    }
+
+    window.location.href = this.apiUrl + "/" + client.loginUrl;
+  }
+
+}

buntspecht-frontend/src/app/pages/management/management.page.html

@@ -0,0 +1,117 @@
+<div class="flex column fill">
+    @if (entries && entries.error) {
+    <div class="flex column fill">
+        <mat-card class="accent box">
+            <mat-card-header>
+                <mat-card-title>{{ 'management.error.' + entries.error.status | i18n}}</mat-card-title>
+                <mat-card-subtitle>{{'management.error' | i18n}}</mat-card-subtitle>
+            </mat-card-header>
+            <mat-card-content>
+                <p>
+                    {{ 'management.error.' + entries.error.status + '.text' | i18n}}
+                </p>
+            </mat-card-content>
+        </mat-card>
+    </div>
+    }
+
+    <div class="flex wrap filter-container">
+        <form class="flex wrap filter">
+            <mat-form-field class="margin">
+                <mat-label>{{'management.filter.created' | i18n}}</mat-label>
+                <mat-date-range-input [rangePicker]="picker">
+                    <input matStartDate placeholder="{{'turnovers.filter.created.from' | i18n}}"
+                        [value]="entries && entries.filter && entries.filter.from"
+                        (dateChange)="setFilter('from', $event.value && $event.value.toISOString() || undefined)">
+                    <input matEndDate placeholder="{{'turnovers.filter.created.to' | i18n}}"
+                        [value]="entries && entries.filter && entries.filter.to"
+                        (dateChange)="setFilter('to', $event.value && $event.value.endOf('day').toISOString() || undefined)">
+                </mat-date-range-input>
+                <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
+                <mat-date-range-picker #picker></mat-date-range-picker>
+            </mat-form-field>
+
+
+            <mat-form-field class="margin">
+                <mat-label>{{'management.filter.username' | i18n}}</mat-label>
+                <input type="text" matInput [matAutocomplete]="auto" [formControl]="usersFormControl"
+                    (change)="setInputFilter('username', $event.target)">
+                <mat-autocomplete #auto="matAutocomplete" (optionSelected)="setFilter('username', $event.option.value)">
+                    @for (user of users | async; track user.username) {
+                    <mat-option [value]="user.username">{{user.username}}</mat-option>
+                    }
+                </mat-autocomplete>
+            </mat-form-field>
+        </form>
+    </div>
+
+    @if (entries) {
+    <div class="scroll-container">
+        <table class="default-table" mat-table [dataSource]="entries.results || []" matSort
+            (matSortChange)="applySort($event)" [matSortDisableClear]="true">
+            <ng-container matColumnDef="username">
+                <th mat-header-cell *matHeaderCellDef mat-sort-header [disableClear]="false">{{'user.username' |
+                    i18n}}
+                </th>
+                <td mat-cell *matCellDef="let entry">
+                    <div class="flex middle">
+                        {{entry[0]}}
+                    </div>
+                </td>
+            </ng-container>
+
+            <ng-container matColumnDef="price">
+                <th mat-header-cell *matHeaderCellDef mat-sort-header>
+                    <span class="spacer"></span>
+                    <span>{{'turnover.price' | i18n}}</span>
+                </th>
+                <td mat-cell *matCellDef="let entry">
+                    <div class="flex">
+                        <span class="spacer"></span>
+                        <span>{{entry[1] | number: '1.2-2'}}</span>
+                        <span>&nbsp;{{'turnover.price.suffix' | i18n}}</span>
+                    </div>
+                </td>
+            </ng-container>
+
+            <ng-container matColumnDef="timeInvestment">
+                <th mat-header-cell *matHeaderCellDef mat-sort-header>
+                    <span class="spacer"></span>
+                    <span>{{'turnover.timeInvestment' | i18n}}</span>
+                </th>
+                <td mat-cell *matCellDef="let entry">
+                    <div class="flex">
+                        <span class="spacer"></span>
+                        <span>{{entry[2] | number: '1.1-1'}}</span>
+                        <span> &nbsp;{{'turnover.timeInvestment.suffix' | i18n}}</span>
+                    </div>
+                </td>
+            </ng-container>
+
+
+            <tr mat-header-row *matHeaderRowDef="columns; sticky: true"></tr>
+            <tr class="entry" mat-row *matRowDef="let row; columns: columns;"></tr>
+        </table>
+    </div>
+    @if (entries.total == 0) {
+    <mat-list>
+        <mat-list-item>
+            <p>{{'paginator.empty' | i18n}}</p>
+        </mat-list-item>
+    </mat-list>
+    }
+
+    <span class="spacer"></span>
+
+    <div class="mat-mdc-paginator flex">
+        <span class="spacer"></span>
+        <mat-paginator [pageSizeOptions]="pageSizeOptions" [pageIndex]="entries.offset / entries.limit"
+            [length]="entries.total" [pageSize]="entries.limit" (page)="applyPage($event)" showFirstLastButtons>
+        </mat-paginator>
+    </div>
+    }
+
+    @if (!entries || !entries.results && !entries.error) {
+    <mat-progress-bar *ngIf="" mode="indeterminate"></mat-progress-bar>
+    }
+</div>

buntspecht-frontend/src/app/pages/management/management.page.ts

@@ -0,0 +1,79 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { FormControl } from '@angular/forms';
+import { PageEvent } from '@angular/material/paginator';
+import { Sort } from '@angular/material/sort';
+import { debounceTime, Observable, switchMap } from 'rxjs';
+import { TurnoverManagementService } from 'src/app/services/turnover.management.service';
+import { UserManagementService } from 'src/app/services/user.management.service';
+
+@Component({
+  selector: 'ui-management',
+  templateUrl: './management.page.html',
+  styleUrls: ['./management.page.scss']
+})
+export class PageManagement implements OnInit {
+
+  @Input() entries: any;
+  pageSizeOptions: number[] = [1, 2, 3, 4, 5, 10, 15, 30, 50, 100];
+  sort: string = "username";
+  descending: boolean = false;
+
+  columns: string[] = ['username', 'price', 'timeInvestment'];
+
+
+  users: Observable<any>;
+  usersFormControl = new FormControl();
+
+  constructor(
+    private turnoverManagementService: TurnoverManagementService,
+    private userManagementService: UserManagementService
+  ) { }
+
+  ngOnInit(): void {
+    this.entries = {};
+    this.update();
+    this.users = this.usersFormControl
+      .valueChanges
+      .pipe(
+        debounceTime(300),
+        switchMap(value => this.userManagementService.pick(value))
+      );
+  }
+
+  update() {
+    const filter = JSON.parse(JSON.stringify(this.entries.filter || {}));
+    this.turnoverManagementService.overview(this.entries.limit || 15, this.entries.offset || 0, this.sort, this.descending, filter).subscribe({
+      next: (data: any) => {
+        this.entries = data;
+        this.entries.filter = filter;
+      }, error: (error) => {
+        this.entries = { error: error };
+      }
+    })
+  }
+
+  applyPage(event: PageEvent) {
+    this.entries.limit = event.pageSize;
+    this.entries.offset = event.pageSize * event.pageIndex;
+    this.update();
+  }
+
+  applySort(event: Sort) {
+    this.sort = event.direction ? event.active : 'username';
+    this.descending = event.direction !== 'asc';
+    this.update();
+  }
+
+  setInputFilter(key: string, target: EventTarget) {
+    this.setFilter(key, (target as HTMLInputElement).value);
+  }
+
+  setFilter(key: string, value) {
+    if (value != this.entries.filter[key]) {
+      this.entries.filter[key] = value;
+      this.entries.offset = 0;
+      this.update();
+    }
+  }
+
+}

buntspecht-frontend/src/app/pages/notfound/notfound.page.html

@@ -0,0 +1,15 @@
+<div class="container">
+    <div class="flex column fill center middle">
+        <mat-card class="accent box">
+            <mat-card-header>
+                <mat-card-title>404</mat-card-title>
+                <mat-card-subtitle>{{'not-found' | i18n}}</mat-card-subtitle>
+            </mat-card-header>
+            <mat-card-content>
+                <p>
+                    {{'not-found.text' | i18n}}
+                </p>
+            </mat-card-content>
+        </mat-card>
+    </div>
+</div>

buntspecht-frontend/src/app/pages/notfound/notfound.page.scss

@@ -0,0 +1,17 @@
+.box {
+  margin: 5px;
+  min-width: 400px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/notfound/notfound.page.ts

@@ -0,0 +1,12 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'page-notfound',
+  templateUrl: './notfound.page.html',
+  styleUrls: [ './notfound.page.scss' ]
+})
+export class PageNotFound  {
+
+  constructor() { }
+
+}

buntspecht-frontend/src/app/pages/password/password.page.html

@@ -0,0 +1,36 @@
+<div class="flex column fill middle">
+  <form [formGroup]="passwordForm" (ngSubmit)="setPassword()">
+    <mat-card>
+      <mat-card-content>
+        <mat-card-title>{{'password' | i18n}}</mat-card-title>
+        <mat-form-field>
+          <mat-label>{{'password.old' | i18n}}</mat-label>
+          <input matInput formControlName="old" type="password">
+          <mat-error *ngFor="let error of passwordForm.get('old').errors | keyvalue">
+            {{'password.error.' + error.key | i18n}}
+        </mat-error>
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'password.new' | i18n}}</mat-label>
+          <input matInput formControlName="password" type="password">
+          <mat-error *ngFor="let error of passwordForm.get('password').errors | keyvalue">
+            {{'password.error.' + error.key | i18n}}
+        </mat-error>
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'password.repeat' | i18n}}</mat-label>
+          <input matInput formControlName="password2" type="password">
+          <mat-error *ngFor="let error of passwordForm.get('password2').errors | keyvalue">
+            {{'password.error.' + error.key | i18n}}
+        </mat-error>
+        </mat-form-field>
+      </mat-card-content>
+      <mat-card-actions>
+        <button type="submit" *ngIf="!working" mat-raised-button color="primary" [disabled]="passwordForm.invalid">
+          {{'password.update' | i18n}}
+        </button>
+        <a *ngIf="passwordSuccess" mat-button color="primary">{{'password.success' | i18n}}</a>
+      </mat-card-actions>
+    </mat-card>
+  </form>
+</div>

buntspecht-frontend/src/app/pages/password/password.page.scss

@@ -0,0 +1,22 @@
+mat-form-field {
+  display: block;
+  margin: 25px 0 !important;
+}
+
+form {
+  margin: 5px;
+  min-width: 400px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/password/password.page.ts

@@ -0,0 +1,69 @@
+import { Component, OnDestroy, OnInit } from '@angular/core';
+import { AbstractControlOptions, FormBuilder, FormGroup, Validators } from '@angular/forms';
+
+import { UserService } from '../../services/user.service';
+import { MatchingValidator } from 'src/app/utils/matching.validator';
+
+@Component({
+  selector: 'page-password',
+  templateUrl: './password.page.html',
+  styleUrls: ['./password.page.scss']
+})
+export class PagePassword implements OnInit, OnDestroy {
+
+  auth: any;
+  working: boolean = false;
+  passwordSuccess: boolean = false;
+  passwordForm: FormGroup;
+
+  constructor(
+    private userService: UserService,
+    private formBuilder: FormBuilder) { }
+
+  ngOnInit(): void {
+    this.passwordForm = this.formBuilder.group({
+      old: ['', Validators.nullValidator],
+      password: ['', Validators.nullValidator],
+      password2: ['', Validators.nullValidator]
+    }, {
+      validator: MatchingValidator('password', 'password2')
+    } as AbstractControlOptions);
+  }
+
+  ngOnDestroy(): void {
+  }
+
+  passwordHasError(controlName: string): boolean {
+    return this.passwordForm.controls[controlName].errors != null;
+  }
+
+  setPassword() {
+    if (this.working) {
+      return;
+    }
+
+    this.working = true;
+    this.passwordSuccess = false;
+    this.userService.setPassword(this.passwordForm.get('old').value, this.passwordForm.get('password').value, this.passwordForm.get('password2').value).subscribe({
+      next: () => {
+        this.working = false;
+        this.passwordSuccess = true;
+      },
+      error: (error) => {
+        this.working = false;
+        if (error.status == 409) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.passwordForm.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+  }
+
+}

buntspecht-frontend/src/app/pages/profile/profile.page.html

@@ -0,0 +1,79 @@
+<div class="flex column fill middle">
+  <form [formGroup]="profileForm" (ngSubmit)="saveProfile()" *ngIf="user">
+    <mat-card>
+      <mat-card-content>
+        <mat-form-field>
+          <mat-label>{{'profile.username' | i18n}}</mat-label>
+          <input matInput formControlName="username" type="name">
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'profile.name' | i18n}}</mat-label>
+          <input matInput formControlName="name" type="name">
+          <mat-error *ngIf="profileHasError('name')">
+            {{'profile.name.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'profile.email' | i18n}}</mat-label>
+          <input matInput formControlName="email" type="email">
+          <mat-error *ngIf="profileHasError('email')">
+            {{'profile.email.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'profile.about' | i18n}}</mat-label>
+          <textarea matAutosize matAutosizeMinRows="3" matInput formControlName="about"></textarea>
+          <mat-error>
+            {{'profile.about.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+        @if (admin) {
+        <mat-slide-toggle class="margin" [checked]="isAdmin" (change)="isAdmin=$event.checked">
+          {{'user.admin' | i18n}}
+        </mat-slide-toggle>
+        }
+      </mat-card-content>
+      <mat-card-actions>
+        <button type="submit" *ngIf="!working" mat-raised-button color="primary" [disabled]="profileForm.invalid">
+          {{'profile.update' | i18n}}
+        </button>
+        <a *ngIf="profileSuccess" mat-button color="primary">{{'profile.success' | i18n}}</a>
+      </mat-card-actions>
+    </mat-card>
+  </form>
+
+  @if(admin) {
+  <form [formGroup]="passwordForm" (ngSubmit)="setPassword()">
+    <mat-card>
+      <mat-card-content>
+        <mat-form-field>
+          <mat-label>{{'password.new' | i18n}}</mat-label>
+          <input matInput formControlName="password" type="password">
+          <mat-error *ngFor="let error of passwordForm.get('password').errors | keyvalue">
+            {{'password.error.' + error.key | i18n}}
+          </mat-error>
+        </mat-form-field>
+        <mat-form-field>
+          <mat-label>{{'password.repeat' | i18n}}</mat-label>
+          <input matInput formControlName="password2" type="password">
+          <mat-error *ngFor="let error of passwordForm.get('password2').errors | keyvalue">
+            {{'password.error.' + error.key | i18n}}
+          </mat-error>
+        </mat-form-field>
+      </mat-card-content>
+      <mat-card-actions>
+        <button type="submit" *ngIf="!working" mat-raised-button color="primary" [disabled]="passwordForm.invalid">
+          {{'password.update' | i18n}}
+        </button>
+        <a *ngIf="passwordSuccess" mat-button color="primary">{{'password.success' | i18n}}</a>
+        @if (admin && user && user.username) {
+        <span class="spacer"></span>
+        <a mat-raised-button color="warn" (click)="deleteUser()">
+          <mat-icon>delete</mat-icon> {{'user.delete' | i18n}}
+        </a>
+        }
+      </mat-card-actions>
+    </mat-card>
+  </form>
+  }
+</div>

buntspecht-frontend/src/app/pages/profile/profile.page.scss

@@ -0,0 +1,23 @@
+mat-form-field,
+mat-slide-toggle {
+  display: block;
+  margin: 25px 0 !important;
+}
+
+form {
+  margin: 5px;
+  min-width: 400px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/profile/profile.page.ts

@@ -0,0 +1,176 @@
+import { Component, OnDestroy, OnInit } from '@angular/core';
+import { AbstractControlOptions, FormBuilder, FormGroup, Validators } from '@angular/forms';
+
+import { UserService } from '../../services/user.service';
+import { ActivatedRoute, Router } from '@angular/router';
+import { UserManagementService } from 'src/app/services/user.management.service';
+import { MatchingValidator } from 'src/app/utils/matching.validator';
+import { ConfirmDialog } from 'src/app/ui/confirm/confirm.component';
+import { MatDialog } from '@angular/material/dialog';
+
+@Component({
+  selector: 'page-profile',
+  templateUrl: './profile.page.html',
+  styleUrls: ['./profile.page.scss']
+})
+export class PageProfile implements OnInit, OnDestroy {
+
+  auth: any;
+  user: any;
+  working: boolean = false;
+  profileSuccess: boolean = false;
+  profileForm: FormGroup;
+  passwordSuccess: boolean = false;
+  passwordForm: FormGroup;
+  admin: boolean = false;
+  isAdmin: boolean = false;
+
+  constructor(
+    private userService: UserService,
+    private userManagementService: UserManagementService,
+    private formBuilder: FormBuilder,
+    private router: Router,
+    private route: ActivatedRoute,
+    public dialog: MatDialog) { }
+
+  ngOnInit(): void {
+    this.profileForm = this.formBuilder.group({
+      username: [{ disabled: true }, Validators.nullValidator],
+      email: ['', Validators.nullValidator],
+      name: ['', Validators.nullValidator],
+      about: ['', Validators.nullValidator]
+    });
+
+    this.passwordForm = this.formBuilder.group({
+      password: ['', Validators.nullValidator],
+      password2: ['', Validators.nullValidator]
+    }, {
+      validator: MatchingValidator('password', 'password2')
+    } as AbstractControlOptions);
+
+    this.profileForm.get('username').disable();
+
+    let userFetch = this.userService.get();
+    if (this.route.snapshot.paramMap.has('username')) {
+      this.admin = true;
+      userFetch = this.userManagementService.get(this.route.snapshot.paramMap.get('username'));
+    }
+
+    userFetch.subscribe({
+      next: (user) => {
+        this.user = user;
+        this.isAdmin = this.user.roles && this.user.roles.indexOf('ROLE_ADMIN') != -1;
+        this.profileForm.get('username').setValue(this.user.username);
+        this.profileForm.get('name').setValue(this.user.name);
+        this.profileForm.get('email').setValue(this.user.email);
+        this.profileForm.get('about').setValue(this.user.about);
+      }
+    })
+
+  }
+
+  ngOnDestroy(): void {
+  }
+
+  profileHasError(controlName: string): boolean {
+    return this.profileForm.controls[controlName].errors != null;
+  }
+
+  saveProfile(): void {
+    if (this.working) {
+      return;
+    }
+
+    this.working = true;
+    this.profileSuccess = false;
+
+    this.user.about = this.profileForm.get('about').value;
+    this.user.email = this.profileForm.get('email').value;
+    this.user.name = this.profileForm.get('name').value;
+
+    if (this.isAdmin && (!this.user.roles || this.user.roles.indexOf('ROLE_ADMIN') == -1)) {
+      this.user.roles = this.user.roles || [];
+      this.user.roles.push('ROLE_ADMIN');
+    } else if (!this.isAdmin && this.user.roles && this.user.roles.indexOf('ROLE_ADMIN') != -1) {
+      this.user.roles.splice(this.user.roles.indexOf('ROLE_ADMIN'), 1);
+    }
+
+    const create = this.admin ? this.userManagementService.update(this.user) : this.userService.update(this.user);
+
+    create.subscribe({
+      next: (data) => {
+        this.user = data;
+        this.isAdmin = this.user.roles && this.user.roles.indexOf('ROLE_ADMIN') != -1;
+        this.working = false;
+        this.profileSuccess = true;
+      },
+      error: (error) => {
+        this.working = false;
+        if (error.status == 422) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.profileForm.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+
+  }
+
+  setPassword() {
+    if (this.working) {
+      return;
+    }
+
+    this.working = true;
+    this.passwordSuccess = false;
+    this.userManagementService.setPassword(this.user.username, this.passwordForm.get('password').value).subscribe({
+      next: () => {
+        this.working = false;
+        this.passwordSuccess = true;
+      },
+      error: (error) => {
+        this.working = false;
+        if (error.status == 409) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.passwordForm.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+  }
+
+
+
+  deleteUser() {
+    const dialogRef = this.dialog.open(ConfirmDialog, {
+      data: {
+        'label': 'user.confirmDelete',
+        'args': [this.user.username]
+      }
+    })
+
+    dialogRef.afterClosed().subscribe({
+      next: (result) => {
+        if (result) {
+          this.userManagementService.deleteUser(this.user.username).subscribe({
+            next: () => {
+              this.router.navigateByUrl('/');
+            }
+          });
+        }
+      }
+    });
+  }
+}

buntspecht-frontend/src/app/pages/turnover/turnover.page.html

@@ -0,0 +1,89 @@
+<div class="flex column fill middle">
+  @if (!turnover) {
+  <mat-progress-bar mode="indeterminate"></mat-progress-bar>
+  }
+  @if (turnover) {
+  <form [formGroup]="form" (ngSubmit)="turnover.id ? update() : create()" #formDirective="ngForm">
+    <mat-card>
+      <mat-card-content>
+        <div class="flex space-between">
+          <p>{{ (turnover.id ? 'turnover.edit' : 'turnover.info') | i18n}}</p>
+          @if (turnover.created) {
+          <span>{{(turnover.username == username ? 'turnover.created.label' : 'turnover.created.label.username') |
+            i18n:(turnover.created | datef:'LLL' ):turnover.username}}</span>
+          }
+        </div>
+        <mat-form-field>
+          <mat-label>{{'turnover.customer' | i18n}}</mat-label>
+          <input matInput formControlName="customer" type="text" [required]="true">
+          <mat-error *ngIf="hasError('customer')">
+            {{'turnover.customer.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+        <mat-form-field>
+          <mat-label>{{'turnover.motif' | i18n}}</mat-label>
+          <input matInput formControlName="motif" type="text" [required]="true">
+          <mat-error *ngIf="hasError('motif')">
+            {{'turnover.motif.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+        <mat-form-field>
+          <mat-label>{{'turnover.price' | i18n}}</mat-label>
+          <input matInput formControlName="price" type="number" min="0" step="0.01" [required]="true">
+          <span matTextSuffix>{{'turnover.price.suffix' | i18n}}</span>
+          <mat-error *ngIf="hasError('price')">
+            {{'turnover.price.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+        <mat-form-field>
+          <mat-label>{{'turnover.timeInvestment' | i18n}}</mat-label>
+          <input matInput formControlName="timeInvestment" type="number" min="0" step="0.1">
+          <span matTextSuffix>{{'turnover.timeInvestment.suffix' | i18n}}</span>
+          <mat-error *ngIf="hasError('timeInvestment')">
+            {{'turnover.timeInvestment.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+        <mat-form-field>
+          <mat-label>{{'turnover.remark' | i18n}}</mat-label>
+          <textarea matAutosize matAutosizeMinRows="3" matInput formControlName="remark"></textarea>
+          <mat-error *ngIf="hasError('remark')">
+            {{'turnover.remark.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+        <mat-form-field>
+          <mat-label>{{'turnover.materialConsumption' | i18n}}</mat-label>
+          <textarea matAutosize matAutosizeMinRows="3" matInput formControlName="materialConsumption"></textarea>
+          <mat-error *ngIf="hasError('materialConsumption')">
+            {{'turnover.materialConsumption.error' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
+      </mat-card-content>
+      <mat-card-actions>
+        @if (!working) {
+        <button type="submit" mat-raised-button color="primary" [disabled]="form.invalid">
+          {{(turnover.id ? 'turnover.update' : 'turnover.create') | i18n}}
+        </button>
+        }
+        @if (turnover.updated && turnover.updated != turnover.created) {
+        <span class="margin">{{'turnover.updated.label' | i18n:(turnover.updated | datef:'LLL' )}}</span>
+        }
+        @if (success) {
+        <a mat-button color="primary" disabled="true">{{'turnover.success' | i18n}}</a>
+        }
+        @if (admin && turnover.id) {
+        <span class="spacer"></span>
+        <a mat-raised-button color="warn" (click)="deleteTurnover()">
+          <mat-icon>delete</mat-icon> {{'turnover.delete' | i18n}}
+        </a>
+        }
+      </mat-card-actions>
+    </mat-card>
+  </form>
+  }
+</div>

buntspecht-frontend/src/app/pages/turnover/turnover.page.scss

@@ -0,0 +1,27 @@
+mat-form-field {
+  display: block;
+  margin: 25px 0 !important;
+}
+
+mat-chip mat-icon.mat-icon-inline {
+  margin-top: -12px;
+  margin-right: -2px;
+}
+
+form {
+  margin: 5px;
+  min-width: 400px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/turnover/turnover.page.ts

@@ -0,0 +1,196 @@
+import { Component, OnInit } from '@angular/core';
+import { FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { MatDialog } from '@angular/material/dialog';
+import { MatSnackBar } from '@angular/material/snack-bar';
+import { ActivatedRoute, Router } from '@angular/router';
+import { AuthService } from 'src/app/services/auth.service';
+import { TurnoverManagementService } from 'src/app/services/turnover.management.service';
+import { TurnoverService } from 'src/app/services/turnover.service';
+import { ConfirmDialog } from 'src/app/ui/confirm/confirm.component';
+
+@Component({
+  selector: 'page-turnover',
+  templateUrl: './turnover.page.html',
+  styleUrls: ['./turnover.page.scss']
+})
+export class PageTurnover implements OnInit {
+
+  id: number;
+  turnover: any;
+  notfound: boolean = false;
+  working: boolean = false;
+  success: boolean = false;
+  form: FormGroup;
+  username: string = "";
+  admin: boolean = false;
+
+  constructor(
+    private turnoverService: TurnoverService,
+    private turnoverManagementService: TurnoverManagementService,
+    private authService: AuthService,
+    private formBuilder: FormBuilder,
+    private router: Router,
+    private route: ActivatedRoute,
+    private snackBar: MatSnackBar,
+    private dialog: MatDialog) { }
+
+  ngOnInit(): void {
+    this.form = this.formBuilder.group({
+      customer: ['', Validators.required],
+      motif: ['', Validators.required],
+      price: ['', Validators.required],
+      timeInvestment: ['', Validators.nullValidator],
+      remark: ['', Validators.nullValidator],
+      materialConsumption: ['', Validators.nullValidator],
+    });
+
+    this.id = this.route.snapshot.paramMap.get('id') && +this.route.snapshot.paramMap.get('id');
+    this.refresh();
+  }
+
+  refresh() {
+    if (this.id) {
+      let request = this.turnoverService.get(this.id);
+
+      this.authService.auth.subscribe({
+        next: (auth) => {
+          this.username = auth.username;
+          this.admin = auth.authorities && auth.authorities.find((role) => role.authority == 'ROLE_ADMIN') != undefined;
+
+          if (this.admin) {
+            request = this.turnoverManagementService.get(this.id);
+          }
+
+          request.subscribe({
+            next: (data) => {
+              this.turnover = data;
+              this.form.get("customer").setValue(this.turnover.customer);
+              this.form.get("motif").setValue(this.turnover.motif);
+              this.form.get("price").setValue(this.turnover.price);
+              this.form.get("timeInvestment").setValue(this.turnover.timeInvestment);
+              this.form.get("remark").setValue(this.turnover.remark);
+              this.form.get("materialConsumption").setValue(this.turnover.materialConsumption);
+
+            },
+            error: (error) => {
+              if (error.status == 404) {
+                this.notfound = true;
+              }
+            }
+          })
+
+        },
+        error: (error) => {
+          this.username = ""
+        }
+      })
+
+
+    } else {
+      this.turnover = {};
+    }
+  }
+
+  hasError(controlName: string): boolean {
+    return this.form.controls[controlName].errors != null;
+  }
+
+  create(): void {
+    if (this.working) {
+      return;
+    }
+
+    this.working = true;
+
+    this.turnover.customer = this.form.get("customer").value;
+    this.turnover.motif = this.form.get("motif").value;
+    this.turnover.price = this.form.get("price").value;
+    this.turnover.timeInvestment = this.form.get("timeInvestment").value;
+    this.turnover.remark = this.form.get("remark").value;
+    this.turnover.materialConsumption = this.form.get("materialConsumption").value;
+
+    this.turnoverService.create(this.turnover).subscribe({
+      next: (data) => {
+        this.router.navigateByUrl('/');
+      },
+      error: (error) => {
+        this.working = false;
+        if (error.status == 422) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.form.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+
+  }
+
+  update(): void {
+    if (this.working) {
+      return;
+    }
+
+    this.working = true;
+    this.turnover.customer = this.form.get("customer").value;
+    this.turnover.motif = this.form.get("motif").value;
+    this.turnover.price = this.form.get("price").value;
+    this.turnover.timeInvestment = this.form.get("timeInvestment").value;
+    this.turnover.remark = this.form.get("remark").value;
+    this.turnover.materialConsumption = this.form.get("materialConsumption").value;
+
+    const request = this.admin ? this.turnoverManagementService.update(this.turnover) : this.turnoverService.update(this.turnover);
+
+    request.subscribe({
+      next: (data) => {
+        this.turnover = data;
+        this.working = false;
+        this.success = true;
+      },
+      error: (error) => {
+        this.working = false;
+        if (error.status == 403) {
+          this.snackBar.open("Error");
+        }
+        if (error.status == 422) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.form.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+  }
+
+  deleteTurnover() {
+    const dialogRef = this.dialog.open(ConfirmDialog, {
+      data: {
+        'label': 'turnover.confirmDelete',
+        'args': [this.turnover.username]
+      }
+    })
+
+    dialogRef.afterClosed().subscribe({
+      next: (result) => {
+        if (result) {
+          this.turnoverManagementService.delete(this.turnover.id).subscribe({
+            next: () => {
+              this.router.navigateByUrl('/');
+            }
+          });
+        }
+      }
+    });
+  }
+
+}

buntspecht-frontend/src/app/pages/turnovers/manage/manage.page.html

@@ -0,0 +1,39 @@
+<div class="flex column fill">
+    <div class="flex wrap filter-container">
+        <a mat-icon-button (click)="filterOpen=!filterOpen" title="{{'turnovers.filter' | i18n}}"
+            [color]="filterOpen ? 'primary': 'accent'">
+            <mat-icon>filter_alt</mat-icon>
+        </a>
+
+        <form class="flex wrap filter" *ngIf="filterOpen">
+            <mat-form-field class="margin">
+                <mat-label>{{'turnovers.filter.created' | i18n}}</mat-label>
+                <mat-date-range-input [rangePicker]="picker">
+                    <input matStartDate placeholder="{{'turnovers.filter.created.from' | i18n}}"
+                        [value]="turnovers && turnovers.filter && turnovers.filter.from"
+                        (dateChange)="setFilter('from', $event.value && $event.value.toISOString() || undefined)">
+                    <input matEndDate placeholder="{{'turnovers.filter.created.to' | i18n}}"
+                        [value]="turnovers && turnovers.filter && turnovers.filter.to"
+                        (dateChange)="setFilter('to', $event.value && $event.value.endOf('day').toISOString() || undefined)">
+                </mat-date-range-input>
+                <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
+                <mat-date-range-picker #picker></mat-date-range-picker>
+            </mat-form-field>
+
+
+            <mat-form-field class="margin">
+                <mat-label>{{'turnovers.filter.username' | i18n}}</mat-label>
+                <input type="text" matInput [matAutocomplete]="auto" [formControl]="usersFormControl"
+                    (change)="setInputFilter('username', $event.target)">
+                <mat-autocomplete #auto="matAutocomplete" (optionSelected)="setFilter('username', $event.option.value)">
+                    @for (user of users | async; track user.username) {
+                    <mat-option [value]="user.username">{{user.username}}</mat-option>
+                    }
+                </mat-autocomplete>
+            </mat-form-field>
+        </form>
+    </div>
+
+    <ui-turnovers class="flex column grow" [turnovers]="turnovers" (page)="applyPage($event)" (sort)="applySort($event)"
+        [username]="true"></ui-turnovers>
+</div>

buntspecht-frontend/src/app/pages/turnovers/manage/manage.page.scss

@@ -0,0 +1,22 @@
+.filter-container {
+    padding-left: 15px;
+    justify-content: flex-start;
+    align-items: center;
+
+    .filter {
+
+        justify-content: flex-start;
+        align-items: center;
+        max-height: 70px;
+
+        &>* {
+            margin-top: 5px;
+            margin-bottom: 5px;
+            margin-left: 15px;
+        }
+    }
+}
+
+ui-turnovers {
+    min-height: 0;
+}

buntspecht-frontend/src/app/pages/turnovers/manage/manage.page.ts

@@ -0,0 +1,76 @@
+import { Component, OnInit } from '@angular/core';
+import { FormControl } from '@angular/forms';
+import { PageEvent } from '@angular/material/paginator';
+import { Sort } from '@angular/material/sort';
+import { debounceTime, Observable, switchMap } from 'rxjs';
+import { TurnoverManagementService } from 'src/app/services/turnover.management.service';
+import { UserManagementService } from 'src/app/services/user.management.service';
+
+@Component({
+  selector: 'page-turnovers-manage',
+  templateUrl: './manage.page.html',
+  styleUrls: ['./manage.page.scss']
+})
+export class PageTurnoversManage implements OnInit {
+
+  turnovers: any;
+  sort: string = "created";
+  descending: boolean = true;
+  filterOpen: boolean = false;
+
+  users: Observable<any>;
+  usersFormControl = new FormControl();
+
+  constructor(
+    private turnoverManagementService: TurnoverManagementService,
+    private userManagementService: UserManagementService
+  ) { }
+
+
+  ngOnInit(): void {
+    this.turnovers = {};
+    this.update();
+    this.users = this.usersFormControl
+      .valueChanges
+      .pipe(
+        debounceTime(300),
+        switchMap(value => this.userManagementService.pick(value))
+      );
+  }
+
+  update() {
+    const filter = JSON.parse(JSON.stringify(this.turnovers.filter || {}));
+    this.turnoverManagementService.fetch(this.turnovers.limit || 15, this.turnovers.offset || 0, this.sort, this.descending, this.turnovers.filter).subscribe({
+      next: (data: any) => {
+        this.turnovers = data;
+        this.turnovers.filter = filter;
+      }, error: (error) => {
+        this.turnovers = { error: error };
+      }
+    })
+  }
+
+  applyPage(event: PageEvent) {
+    this.turnovers.limit = event.pageSize;
+    this.turnovers.offset = event.pageSize * event.pageIndex;
+    this.update();
+  }
+
+  applySort(event: Sort) {
+    this.sort = event.direction ? event.active : 'created';
+    this.descending = event.direction !== 'asc';
+    this.update();
+  }
+
+  setInputFilter(key: string, target: EventTarget) {
+    this.setFilter(key, (target as HTMLInputElement).value);
+  }
+
+  setFilter(key: string, value) {
+    if (value != this.turnovers.filter[key]) {
+      this.turnovers.filter[key] = value;
+      this.turnovers.offset = 0;
+      this.update();
+    }
+  }
+}

buntspecht-frontend/src/app/pages/turnovers/turnovers.page.html

@@ -0,0 +1,27 @@
+<div class="flex column fill">
+    <div class="flex wrap filter-container">
+        <a mat-icon-button (click)="filterOpen=!filterOpen" title="{{'turnovers.filter' | i18n}}"
+            [color]="filterOpen ? 'primary': 'accent'">
+            <mat-icon>filter_alt</mat-icon>
+        </a>
+
+        <form class="flex wrap filter" *ngIf="filterOpen">
+            <mat-form-field class="margin">
+                <mat-label>{{'turnovers.filter.created' | i18n}}</mat-label>
+                <mat-date-range-input [rangePicker]="picker">
+                    <input matStartDate placeholder="{{'turnovers.filter.created.from' | i18n}}"
+                        [value]="turnovers && turnovers.filter && turnovers.filter.from"
+                        (dateChange)="setFilter('from', $event.value && $event.value.toISOString() || undefined)">
+                    <input matEndDate placeholder="{{'turnovers.filter.created.to' | i18n}}"
+                        [value]="turnovers && turnovers.filter && turnovers.filter.to"
+                        (dateChange)="setFilter('to', $event.value && $event.value.endOf('day').toISOString() || undefined)">
+                </mat-date-range-input>
+                <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
+                <mat-date-range-picker #picker></mat-date-range-picker>
+            </mat-form-field>
+        </form>
+    </div>
+
+    <ui-turnovers class="flex column grow" [turnovers]="turnovers" (page)="applyPage($event)"
+        (sort)="applySort($event)"></ui-turnovers>
+</div>

buntspecht-frontend/src/app/pages/turnovers/turnovers.page.scss

@@ -0,0 +1,23 @@
+.filter-container {
+    padding-left: 15px;
+    justify-content: flex-start;
+    align-items: center;
+
+    .filter {
+
+        justify-content: flex-start;
+        align-items: center;
+        max-height: 70px;
+
+        &>* {
+            margin-top: 5px;
+            margin-bottom: 5px;
+            margin-left: 15px;
+        }
+    }
+}
+
+
+ui-turnovers {
+    min-height: 0;
+}

buntspecht-frontend/src/app/pages/turnovers/turnovers.page.ts

@@ -0,0 +1,64 @@
+import { Component, OnInit } from '@angular/core';
+import { FormControl } from '@angular/forms';
+import { PageEvent } from '@angular/material/paginator';
+import { Sort } from '@angular/material/sort';
+import { debounceTime, Observable, switchMap } from 'rxjs';
+import { TurnoverService } from 'src/app/services/turnover.service';
+import { UserManagementService } from 'src/app/services/user.management.service';
+
+@Component({
+  selector: 'page-turnovers',
+  templateUrl: './turnovers.page.html',
+  styleUrls: ['./turnovers.page.scss']
+})
+export class PageTurnovers implements OnInit {
+
+  turnovers: any;
+  sort: string = "created";
+  descending: boolean = true;
+  filterOpen: boolean = false;
+
+  users: Observable<any>;
+  usersFormControl = new FormControl();
+
+  constructor(
+    private turnoverService: TurnoverService
+  ) { }
+
+  ngOnInit(): void {
+    this.turnovers = {};
+    this.update();
+  }
+
+  update() {
+    const filter = JSON.parse(JSON.stringify(this.turnovers.filter || {}));
+    this.turnoverService.fetch(this.turnovers.limit || 15, this.turnovers.offset || 0, this.sort, this.descending, this.turnovers.filter).subscribe({
+      next: (data: any) => {
+        this.turnovers = data;
+        this.turnovers.filter = filter;
+      }, error: (error) => {
+        this.turnovers = { error: error };
+      }
+    })
+  }
+
+  applyPage(event: PageEvent) {
+    this.turnovers.limit = event.pageSize;
+    this.turnovers.offset = event.pageSize * event.pageIndex;
+    this.update();
+  }
+
+  applySort(event: Sort) {
+    this.sort = event.direction ? event.active : 'created';
+    this.descending = event.direction !== 'asc';
+    this.update();
+  }
+
+  setFilter(key: string, value) {
+    if (value != this.turnovers.filter[key]) {
+      this.turnovers.filter[key] = value;
+      this.turnovers.offset = 0;
+      this.update();
+    }
+  }
+}

buntspecht-frontend/src/app/pages/unavailable/unavailable.page.html

@@ -0,0 +1,20 @@
+<div class="container">
+    <div class="flex column fill center middle">
+        <mat-card class="warn box">
+            <mat-card-header>
+                <mat-card-title>503</mat-card-title>
+                <mat-card-subtitle>{{'service-unavailable' | i18n}}</mat-card-subtitle>
+            </mat-card-header>
+            <mat-card-content>
+                <p>
+                    {{'service-unavailable.text' | i18n}}
+                </p>
+            </mat-card-content>
+            <mat-card-actions>
+                <a mat-raised-button color="primary" (click)="retry()">
+                    {{'service-unavailable.retry' | i18n}}
+                </a>
+            </mat-card-actions>
+        </mat-card>
+    </div>
+</div>

buntspecht-frontend/src/app/pages/unavailable/unavailable.page.scss

@@ -0,0 +1,17 @@
+.box {
+  margin: 5px;
+  min-width: 400px;
+
+  @media screen and (min-width: 576px) {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: 768px) {
+    max-width: 80%;
+    margin: 15px;
+  }
+
+  @media screen and (min-width: 992px) {
+    max-width: 50%;
+  }
+}

buntspecht-frontend/src/app/pages/unavailable/unavailable.page.ts

@@ -0,0 +1,39 @@
+import { Component, OnInit } from '@angular/core';
+import { Location } from '@angular/common'
+import { Router, ActivatedRoute } from '@angular/router';
+
+@Component({
+  selector: 'page-unavailable',
+  templateUrl: './unavailable.page.html',
+  styleUrls: ['./unavailable.page.scss']
+})
+export class PageUnavailable implements OnInit {
+
+  targetRoute = '';
+
+  constructor(
+    private location: Location,
+    private router: Router,
+    private route: ActivatedRoute) { }
+
+  ngOnInit(): void {
+    this.route.queryParams.subscribe({
+      next: (params) => {
+        if (params['target']) {
+          this.targetRoute = params['target'];
+          this.router.navigate([], { queryParams: { target: null }, queryParamsHandling: 'merge', skipLocationChange: true });
+        }
+      }
+    });
+
+  }
+
+  retry() {
+    if (!this.targetRoute || this.targetRoute === "unavailable" || this.targetRoute === "/unavailable") {
+      this.location.back;
+    } else {
+      this.router.navigate([this.targetRoute]);
+    }
+  }
+
+}

buntspecht-frontend/src/app/pages/users/users.page.html

@@ -0,0 +1,110 @@
+@if (users && users.error) {
+<div class="flex column fill">
+    <mat-card class="accent box">
+        <mat-card-header>
+            <mat-card-title>{{ 'users.error.' + users.error.status | i18n}}</mat-card-title>
+            <mat-card-subtitle>{{'users.error' | i18n}}</mat-card-subtitle>
+        </mat-card-header>
+        <mat-card-content>
+            <p>
+                {{ 'users.error.' + users.error.status + '.text' | i18n}}
+            </p>
+        </mat-card-content>
+    </mat-card>
+</div>
+}
+
+@if (users) {
+<div class="flex column fill">
+    <div class="scroll-container">
+        <table class="default-table" mat-table [dataSource]="users.results || []" matSort
+            (matSortChange)="applySort($event)" [matSortDisableClear]="true">
+            <ng-container matColumnDef="username">
+                <th mat-header-cell *matHeaderCellDef mat-sort-header [disableClear]="false">{{'user.username' |
+                    i18n}}
+                </th>
+                <td mat-cell *matCellDef="let user">
+                    <div class="flex middle">
+                        @if (user.roles && user.roles.indexOf('ROLE_ADMIN') != -1) {
+                        <mat-icon>admin_panel_settings</mat-icon>
+                        }
+                        {{user.username}}
+                    </div>
+                </td>
+            </ng-container>
+
+            <ng-container matColumnDef="name">
+                <th mat-header-cell *matHeaderCellDef mat-sort-header>{{'profile.name' | i18n}}</th>
+                <td mat-cell *matCellDef="let user">{{user.name}}</td>
+            </ng-container>
+
+            <ng-container matColumnDef="email">
+                <th mat-header-cell *matHeaderCellDef>{{'profile.email' | i18n}}</th>
+                <td mat-cell *matCellDef="let user">{{user.email}}</td>
+            </ng-container>
+
+            <ng-container matColumnDef="about">
+                <th mat-header-cell *matHeaderCellDef>{{'profile.about' | i18n}}</th>
+                <td mat-cell *matCellDef="let user">
+                    <span class="ellipsis" matTooltip="{{user.about}}">{{user.about}}</span>
+                </td>
+            </ng-container>
+
+            <tr mat-header-row *matHeaderRowDef="columns; sticky: true"></tr>
+            <tr class="user" mat-row *matRowDef="let user; columns: columns;" [routerLink]="'/u/' + user.username"></tr>
+        </table>
+    </div>
+    @if (users.total == 0) {
+    <mat-list>
+        <mat-list-item>
+            <p>{{'paginator.empty' | i18n}}</p>
+        </mat-list-item>
+    </mat-list>
+    }
+
+    <span class="spacer"></span>
+
+
+    <form [formGroup]="form" (ngSubmit)="createUser()" #formDirective="ngForm">
+        <div class="flex middle">
+            <mat-form-field class="margin">
+                <mat-label>{{'profile.username' | i18n}}</mat-label>
+                <input matInput formControlName="username" type="text" [required]="true">
+            </mat-form-field>
+
+            <mat-form-field class="margin">
+                <mat-label>{{'profile.name' | i18n}}</mat-label>
+                <input matInput formControlName="name" type="text">
+            </mat-form-field>
+
+            <mat-form-field class="margin">
+                <mat-label>{{'profile.email' | i18n}}</mat-label>
+                <input matInput formControlName="email" type="email">
+            </mat-form-field>
+
+            <mat-form-field class="margin">
+                <mat-label>{{'user.password' | i18n}}</mat-label>
+                <input matInput formControlName="password" type="password">
+            </mat-form-field>
+
+            <mat-slide-toggle class="margin" (change)="isAdmin=$event.checked">
+                {{'user.admin' | i18n}}
+            </mat-slide-toggle>
+
+            <button type="submit" mat-raised-button color="primary" [disabled]="form.invalid">{{'user.create' |
+                i18n}}<mat-icon style="font-size: 1em;">person_add</mat-icon></button>
+        </div>
+    </form>
+
+    <div class="mat-mdc-paginator flex">
+        <span class="spacer"></span>
+        <mat-paginator [pageSizeOptions]="pageSizeOptions" [pageIndex]="users.offset / users.limit"
+            [length]="users.total" [pageSize]="users.limit" (page)="applyPage($event)" showFirstLastButtons>
+        </mat-paginator>
+    </div>
+</div>
+}
+
+@if (!users || !users.results && !users.error) {
+<mat-progress-bar *ngIf="" mode="indeterminate"></mat-progress-bar>
+}

buntspecht-frontend/src/app/pages/users/users.page.scss

@@ -0,0 +1,10 @@
+tr.user {
+    &:hover {
+        cursor: pointer;
+        opacity: 0.7;
+    }
+
+    &.disabled {
+        pointer-events: none;
+    }
+}

buntspecht-frontend/src/app/pages/users/users.page.ts

@@ -0,0 +1,134 @@
+import { Component, HostListener, Input, OnInit } from '@angular/core';
+import { FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { MatDialog } from '@angular/material/dialog';
+import { PageEvent } from '@angular/material/paginator';
+import { Sort } from '@angular/material/sort';
+import { AuthService } from 'src/app/services/auth.service';
+import { UserManagementService } from 'src/app/services/user.management.service';
+import { ConfirmDialog } from 'src/app/ui/confirm/confirm.component';
+
+@Component({
+  selector: 'ui-users',
+  templateUrl: './users.page.html',
+  styleUrls: ['./users.page.scss']
+})
+export class PageUsers implements OnInit {
+
+  @Input() users: any;
+  pageSizeOptions: number[] = [1, 2, 3, 4, 5, 10, 15, 30, 50, 100];
+  sort: string = "username";
+  descending: boolean = false;
+
+  columns: string[] = [];
+
+  form: FormGroup;
+  isAdmin: boolean = false;
+
+  username: string = "";
+
+  constructor(
+    private userManagementService: UserManagementService,
+    private authService: AuthService,
+    private formBuilder: FormBuilder) { }
+
+  ngOnInit(): void {
+    this.users = {};
+    this.update();
+    this.applyResize(window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth);
+    this.form = this.formBuilder.group({
+      username: ['', Validators.required],
+      name: ['', Validators.nullValidator],
+      email: ['', Validators.nullValidator],
+      password: ['', Validators.required]
+    });
+
+    this.authService.auth.subscribe({
+      next: (auth) => {
+        this.username = auth.username;
+      },
+      error: (error) => {
+        this.username = ""
+      }
+    })
+  }
+
+  @HostListener('window:resize', ['$event'])
+  onResize(event) {
+    this.applyResize(event.target.innerWidth || event.target.documentElement.clientWidth || event.target.body.clientWidth)
+  }
+
+  applyResize(width: number) {
+    if (width < 992) {
+      this.columns = ['username', 'name', 'email']
+    } else {
+      this.columns = ['username', 'name', 'email', 'about'];
+    }
+  }
+
+  update() {
+    this.userManagementService.fetch(this.users.limit || 15, this.users.offset || 0, this.sort, this.descending).subscribe({
+      next: (data: any) => {
+        this.users = data;
+      }, error: (error) => {
+        this.users = { error: error };
+      }
+    })
+  }
+
+  applyPage(event: PageEvent) {
+    this.users.limit = event.pageSize;
+    this.users.offset = event.pageSize * event.pageIndex;
+    this.update();
+  }
+
+  applySort(event: Sort) {
+    this.sort = event.direction ? event.active : 'username';
+    this.descending = event.direction !== 'asc';
+    this.update();
+  }
+
+  createUser() {
+    const user = {
+      username: this.form.get("username").value,
+      name: this.form.get("name").value,
+      email: this.form.get("email").value,
+      roles: this.isAdmin ? ['ROLE_ADMIN'] : []
+    }
+    this.userManagementService.create(user).subscribe({
+      next: (result: any) => {
+        this.userManagementService.setPassword(result.username, this.form.get("password").value).subscribe({
+          next: (result) => {
+            this.update();
+          },
+          error: (error) => {
+            if (error.status == 422) {
+              let errors = {};
+              for (let code of error.error) {
+                errors[code.field] = errors[code.field] || {};
+                errors[code.field][code.code] = true;
+              }
+
+              for (let code in errors) {
+                this.form.get(code).setErrors(errors[code]);
+              }
+            }
+          }
+        });
+      },
+      error: (error) => {
+        if (error.status == 422) {
+          let errors = {};
+          for (let code of error.error) {
+            errors[code.field] = errors[code.field] || {};
+            errors[code.field][code.code] = true;
+          }
+
+          for (let code in errors) {
+            this.form.get(code).setErrors(errors[code]);
+          }
+        }
+      }
+    })
+  }
+
+}

buntspecht-frontend/src/app/services/abstract.service.ts

@@ -0,0 +1,40 @@
+import { HttpClient, HttpParams } from "@angular/common/http";
+import { Injectable } from "@angular/core";
+import { environment } from "src/environments/environment";
+
+@Injectable({
+    providedIn: 'root',
+})
+export class AbstractService {
+
+    constructor(private http: HttpClient) {
+    }
+
+    fetch(path: string, limit: number, offset: number, sort: string, descending: boolean, filter: any | undefined) {
+        let httpParams = new HttpParams();
+        if (limit != undefined) {
+            httpParams = httpParams.set("limit", "" + limit);
+        }
+        if (offset) {
+            httpParams = httpParams.set("offset", "" + offset);
+        }
+
+        if (sort) {
+            httpParams = httpParams.set("sort", "" + sort);
+        }
+
+        if (descending) {
+            httpParams = httpParams.set("descending", "" + descending);
+        }
+
+        if (filter) {
+            for (const param in filter) {
+                if (filter[param]) {
+                    httpParams = httpParams.set(param, "" + filter[param]);
+                }
+            }
+        }
+
+        return this.http.get(environment.apiUrl + path, { params: httpParams });
+    }
+}

buntspecht-frontend/src/app/services/auth.service.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@angular/core';
+import { ReplaySubject, of } from 'rxjs';
+import { HttpClient } from '@angular/common/http';
+
+import { RequestError } from './requesterror';
+
+import { environment } from './../../environments/environment';
+
+@Injectable({
+    providedIn: 'root',
+})
+export class AuthService {
+
+    auth: ReplaySubject<any> = new ReplaySubject(undefined);
+
+    constructor(private http: HttpClient) {
+    }
+
+    getAuth() {
+        return this.authMe().toPromise().then((data: any) => {
+            this.auth.next(data);
+            return data;
+        }, error => {
+            throw new RequestError(error);
+        });
+    }
+
+    authMe() {
+        return this.http.get(environment.apiUrl + "/auth");
+    }
+
+    getExternal() {
+        return this.http.get(environment.apiUrl + "/auth/external");
+    }
+
+    logout() {
+        return this.http.post(environment.apiUrl + "/logout", {});
+    }
+
+}

buntspecht-frontend/src/app/services/debug.service.ts

@@ -0,0 +1,19 @@
+import { HttpClient } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+
+
+import { environment } from '../../environments/environment';
+
+@Injectable({
+    providedIn: 'root',
+})
+export class DebugService {
+
+    constructor(private http: HttpClient) {
+    }
+
+    random() {
+        return this.http.get(environment.apiUrl + "/debug/random");
+    }
+
+}

buntspecht-frontend/src/app/services/i18n.service.ts

@@ -0,0 +1,138 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { environment } from '../../environments/environment';
+import { MatPaginatorIntl } from '@angular/material/paginator';
+import { Subject } from 'rxjs';
+
+@Injectable({
+    providedIn: 'root',
+})
+export class I18nService {
+
+    locale: string = "de-informal";
+    locales: any[] = ["de-informal"];
+    i18n: any;
+
+    constructor(private http: HttpClient) {
+
+    }
+
+    getLocales() {
+        return this.locales;
+    }
+
+    getLocale() {
+        return this.locale || 'de-informal';
+    }
+
+    setLocale(locale) {
+        this.locale = locale;
+    }
+
+    async fetch() {
+
+        let browserLocale = navigator.language;
+
+        if (browserLocale.indexOf("-") != -1) {
+            browserLocale = browserLocale.split("-")[0];
+        }
+
+        let locale = localStorage.getItem("buntspecht.locale") || browserLocale || this.locales[0];
+
+        if (locale == 'de') {
+            locale = 'de-informal';
+        }
+
+        if (this.locales.indexOf(locale) == -1) {
+            locale = this.locales[0];
+        }
+
+        this.setLocale(locale);
+        this.i18n = await this.http.get("/assets/i18n/" + locale + ".json").toPromise();
+        console.debug("fallback to default locale");
+
+    }
+
+    get(key, args: string[]): string {
+        return this.getInternal(key, args, this.i18n, "", true);
+    }
+
+    getEmpty(key, args: string[]): string {
+        return this.getInternal(key, args, this.i18n, "", false);
+    }
+
+    getInternal(key, args: string[], from, path, empty: boolean): string {
+        key += '';
+        if (!from) {
+            return empty ? this.empty(key, args, path) : (key || "");
+        } else if (from[key]) {
+            if (typeof from[key] === 'object') {
+                if (from[key]["."]) {
+                    return this.insertArguments(from[key]["."], args);
+                }
+                return empty ? this.empty(key, args, path) : (key || "");
+            }
+            return this.insertArguments(from[key], args);
+        } else {
+            let keys = key.split(".");
+            if (from[keys[0]]) {
+                key = keys.slice(1, keys.length).join(".");
+                return this.getInternal(key, args, from[keys[0]], path + keys[0] + ".", empty)
+            }
+        }
+
+        return empty ? this.empty(key, args, path) : (key || "");
+    }
+
+    empty(key, args: string[], path: string): string {
+        return (path ? path + (path.endsWith(".") ? "" : ".") : "") + key + (args && args.length > 0 ? (" [" + args + "]") : "");
+    }
+
+    insertArguments(label: string, args: string[]) {
+        if (args) {
+            for (let index in args) {
+                label = label.replace(`{${index}}`, this.get(args[index], null));
+            }
+        }
+        return label;
+    }
+
+}
+
+
+@Injectable()
+export class I18nPaginatorIntl implements MatPaginatorIntl {
+
+    changes = new Subject<void>();
+
+    i18n: I18nService;
+
+    itemsPerPageLabel: string;
+    nextPageLabel: string;
+    previousPageLabel: string;
+    firstPageLabel: string;
+    lastPageLabel: string;
+
+
+    injectI18n(i18n: I18nService) {
+        this.i18n = i18n;
+
+        this.firstPageLabel = this.i18n.get('paginator.firstPage', []);
+        this.itemsPerPageLabel = this.i18n.get('paginator.itemsPerPage', []);
+        this.lastPageLabel = this.i18n.get('paginator.lastPage', []);
+
+        this.nextPageLabel = this.i18n.get('paginator.nextPage', []);
+        this.previousPageLabel = this.i18n.get('paginator.previousPage', []);
+
+    }
+
+
+    getRangeLabel(page: number, pageSize: number, length: number): string {
+        if (length === 0) {
+            return this.i18n.get('paginator.empty', []);
+        }
+
+        const amountPages = Math.ceil(length / pageSize);
+        return this.i18n.get('paginator.range', [page + 1 + "", amountPages + ""]);
+    }
+}

buntspecht-frontend/src/app/services/requesterror.ts

@@ -0,0 +1,15 @@
+export class RequestError extends Error {
+
+  response: any;
+
+  constructor(response: any) {
+    super(response.message);
+    this.response = response;
+    // Set the prototype explicitly.
+    Object.setPrototypeOf(this, RequestError.prototype);
+  }
+
+  getResponse(): any {
+    return this.response;
+  }
+}

buntspecht-frontend/src/app/services/turnover.management.service.ts

@@ -0,0 +1,34 @@
+import { HttpClient } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+
+import { environment } from '../../environments/environment';
+import { AbstractService } from './abstract.service';
+
+@Injectable({
+    providedIn: 'root',
+})
+export class TurnoverManagementService {
+
+    constructor(private http: HttpClient, private abstractService: AbstractService) {
+    }
+
+    fetch(limit: number, offset: number, sort: string, descending: boolean, filter: any | undefined) {
+        return this.abstractService.fetch("/turnovers/manage", limit, offset, sort, descending, filter);
+    }
+
+    overview(limit: number, offset: number, sort: string, descending: boolean, filter: any | undefined) {
+        return this.abstractService.fetch("/turnovers/manage/overview", limit, offset, sort, descending, filter);
+    }
+
+    get(id: number) {
+        return this.http.get(environment.apiUrl + "/turnovers/manage/" + id);
+    }
+
+    update(turnover: any) {
+        return this.http.patch(environment.apiUrl + "/turnovers/manage", turnover);
+    }
+
+    delete(id: number) {
+        return this.http.delete(environment.apiUrl + "/turnovers/manage/" + id);
+    }
+}