initial commit

2021-10-03 17:17:00 +02:00
commit 3fffe798cd
45 changed files with 3846 additions and 0 deletions
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+/**
+ * 
+ */
+package de.bstly.board.businesslogic;
+
+import java.time.Instant;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.domain.Sort.Order;
+import org.springframework.stereotype.Component;
+
+import de.bstly.board.model.Entry;
+import de.bstly.board.model.QEntry;
+import de.bstly.board.model.QVote;
+import de.bstly.board.model.RankedEntry;
+import de.bstly.board.model.Types;
+import de.bstly.board.model.VoteType;
+import de.bstly.board.repository.EntryRepository;
+import de.bstly.board.repository.VoteRepository;
+
+/**
+ * @author Lurkars
+ *
+ */
+@Component
+public class EntryManager {
+
+	@Autowired
+	private EntryRepository entryRepository;
+	@Autowired
+	private CommentManager commentManager;
+	@Autowired
+	private VoteManager voteManager;
+	@Autowired
+	private VoteRepository voteRepository;
+	private QEntry qEntry = QEntry.entry;
+	private QVote qVote = QVote.vote;
+
+	@Value("${bstly.board.ranking.gravity:1.8}")
+	private double GRAVITY;
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @return
+	 */
+	public Page<Entry> fetchByRanking(int page, int size) {
+		return entryRepository.findAll(
+				PageRequest.of(page, size, Sort.by(Order.desc("ranking"), Order.desc("created"))));
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @param order
+	 * @return
+	 */
+	public Page<Entry> fetchByDate(Instant date, int page, int size) {
+		return entryRepository.findAll(qEntry.created.before(date),
+				PageRequest.of(page, size, Sort.by(Order.desc("created"))));
+	}
+
+	/**
+	 * 
+	 * @param page
+	 * @param size
+	 * @return
+	 */
+	public Page<RankedEntry> directFetchByRanking(Instant date, double gravity, int page,
+			int size) {
+		return entryRepository.findAllByRanking(date, gravity, PageRequest.of(page, size));
+	}
+
+	/**
+	 * 
+	 * @param entry
+	 */
+	public void applyMetadata(String username, Entry entry) {
+		if (!entry.getMetadata().containsKey("comments")) {
+			entry.getMetadata().put("comments", commentManager.count(entry.getId()));
+		}
+		if (!entry.getMetadata().containsKey("points")) {
+			entry.getMetadata().put("points", voteManager.getPoints(entry.getId(), Types.entry));
+		}
+		if (!entry.getMetadata().containsKey("vote")) {
+			entry.getMetadata().put("vote",
+					!voteRepository.exists(qVote.target.eq(entry.getId())
+							.and(qVote.targetType.eq(Types.entry)).and(qVote.type.eq(VoteType.up))
+							.and(qVote.author.eq(username))));
+		}
+		if (!entry.getMetadata().containsKey("unvote")) {
+			entry.getMetadata().put("unvote",
+					voteRepository.exists(qVote.target.eq(entry.getId())
+							.and(qVote.targetType.eq(Types.entry))
+							.and(qVote.type.eq(VoteType.up).and(qVote.author.eq(username)))));
+		}
+		if (!entry.getMetadata().containsKey("downvote")) {
+			entry.getMetadata().put("downvote",
+					!voteRepository.exists(qVote.target.eq(entry.getId())
+							.and(qVote.targetType.eq(Types.entry)).and(qVote.author.eq(username))));
+		}
+	}
+
+	/**
+	 * 
+	 * @param entries
+	 */
+	public void applyMetadata(String username, List<Entry> entries) {
+		for (Entry entry : entries) {
+			applyMetadata(username, entry);
+		}
+	}
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	public boolean exists(Long id) {
+		return entryRepository.existsById(id);
+	}
+
+	/**
+	 * @param id
+	 * @return
+	 */
+	public Entry get(Long id) {
+		return entryRepository.findById(id).orElse(null);
+	}
+
+	/**
+	 * @param entry
+	 * @return
+	 */
+	public Entry save(Entry entry) {
+		return entryRepository.save(entry);
+	}
+
+	/**
+	 * 
+	 * @param entryId
+	 * @return
+	 */
+	public long getPoints(Long entryId) {
+		long upvotes = voteRepository.count(qVote.targetType.eq(Types.entry)
+				.and(qVote.type.eq(VoteType.up)).and(qVote.target.eq(entryId)));
+		long downvotes = voteRepository.count(qVote.targetType.eq(Types.entry)
+				.and(qVote.type.eq(VoteType.down)).and(qVote.target.eq(entryId)));
+		return upvotes - downvotes;
+	}
+
+}