import {DivImportance, layoutManager} from "./LayoutManager";
import {HtmlUtils} from "./HtmlUtils";
import {discussionManager, SendMessageCallback} from "./DiscussionManager";
import type {UserInputManager} from "../Phaser/UserInput/UserInputManager";
import {localUserStore} from "../Connexion/LocalUserStore";
import type {UserSimplePeerInterface} from "./SimplePeer";
import {SoundMeter} from "../Phaser/Components/SoundMeter";
import {DISABLE_NOTIFICATIONS} from "../Enum/EnvironmentVariable";
import {
    localStreamStore,
} from "../Stores/MediaStore";
import {
    screenSharingLocalStreamStore
} from "../Stores/ScreenSharingStore";
import {helpCameraSettingsVisibleStore} from "../Stores/HelpCameraSettingsStore";

export type UpdatedLocalStreamCallback = (media: MediaStream|null) => void;
export type StartScreenSharingCallback = (media: MediaStream) => void;
export type StopScreenSharingCallback = (media: MediaStream) => void;

import {cowebsiteCloseButtonId} from "./CoWebsiteManager";
import {gameOverlayVisibilityStore} from "../Stores/GameOverlayStoreVisibility";

export class MediaManager {
    startScreenSharingCallBacks : Set<StartScreenSharingCallback> = new Set<StartScreenSharingCallback>();
    stopScreenSharingCallBacks : Set<StopScreenSharingCallback> = new Set<StopScreenSharingCallback>();

    private focused : boolean = true;

    private triggerCloseJistiFrame : Map<String, Function> = new Map<String, Function>();

    private userInputManager?: UserInputManager;

    //FIX ME SOUNDMETER: check stalability of sound meter calculation
    /*private mySoundMeter?: SoundMeter|null;
    private soundMeters: Map<string, SoundMeter> = new Map<string, SoundMeter>();
    private soundMeterElements: Map<string, HTMLDivElement> = new Map<string, HTMLDivElement>();*/

    constructor() {

        this.pingCameraStatus();

        //FIX ME SOUNDMETER: check stability of sound meter calculation
        /*this.mySoundMeterElement = (HtmlUtils.getElementByIdOrFail('mySoundMeter'));
        this.mySoundMeterElement.childNodes.forEach((value: ChildNode, index) => {
            this.mySoundMeterElement.children.item(index)?.classList.remove('active');
        });*/

        //Check of ask notification navigator permission
        this.getNotification();

        localStreamStore.subscribe((result) => {
            if (result.type === 'error') {
                console.error(result.error);
                layoutManager.addInformation('warning', 'Camera access denied. Click here and check your browser permissions.', () => {
                    helpCameraSettingsVisibleStore.set(true);
                }, this.userInputManager);
                return;
            }
        });

        //let isScreenSharing = false;
        screenSharingLocalStreamStore.subscribe((result) => {
            if (result.type === 'error') {
                console.error(result.error);
                layoutManager.addInformation('warning', 'Screen sharing denied. Click here and check your browser permissions.', () => {
                    helpCameraSettingsVisibleStore.set(true);
                }, this.userInputManager);
                return;
            }
        });
    }

    public showGameOverlay(): void {
        const gameOverlay = HtmlUtils.getElementByIdOrFail('game-overlay');
        gameOverlay.classList.add('active');

        const buttonCloseFrame = HtmlUtils.getElementByIdOrFail(cowebsiteCloseButtonId);
        const functionTrigger = () => {
            this.triggerCloseJitsiFrameButton();
        }
        buttonCloseFrame.removeEventListener('click', () => {
            buttonCloseFrame.blur();
            functionTrigger();
        });

        gameOverlayVisibilityStore.showGameOverlay();
    }

    public hideGameOverlay(): void {
        const gameOverlay = HtmlUtils.getElementByIdOrFail('game-overlay');
        gameOverlay.classList.remove('active');

        const buttonCloseFrame = HtmlUtils.getElementByIdOrFail(cowebsiteCloseButtonId);
        const functionTrigger = () => {
            this.triggerCloseJitsiFrameButton();
        }
        buttonCloseFrame.addEventListener('click', () => {
            buttonCloseFrame.blur();
            functionTrigger();
        });

        gameOverlayVisibilityStore.hideGameOverlay();
    }

    private getScreenSharingId(userId: string): string {
        return `screen-sharing-${userId}`;
    }

    disabledMicrophoneByUserId(userId: number){
        const element = document.getElementById(`microphone-${userId}`);
        if(!element){
            return;
        }
        element.classList.add('active') //todo: why does a method 'disable' add a class 'active'?
    }

    enabledMicrophoneByUserId(userId: number){
        const element = document.getElementById(`microphone-${userId}`);
        if(!element){
            return;
        }
        element.classList.remove('active') //todo: why does a method 'enable' remove a class 'active'?
    }

    disabledVideoByUserId(userId: number) {
        let element = document.getElementById(`${userId}`);
        if (element) {
            element.style.opacity = "0";
        }
        element = document.getElementById(`name-${userId}`);
        if (element) {
            element.style.display = "block";
        }
    }

    enabledVideoByUserId(userId: number){
        let element = document.getElementById(`${userId}`);
        if(element){
            element.style.opacity = "1";
        }
        element = document.getElementById(`name-${userId}`);
        if(element){
            element.style.display = "none";
        }
    }

    toggleBlockLogo(userId: number, show: boolean): void {
        const blockLogoElement = HtmlUtils.getElementByIdOrFail<HTMLImageElement>('blocking-'+userId);
        show ? blockLogoElement.classList.add('active') : blockLogoElement.classList.remove('active');
    }

    isConnecting(userId: string): void {
        const connectingSpinnerDiv = this.getSpinner(userId);
        if (connectingSpinnerDiv === null) {
            return;
        }
        connectingSpinnerDiv.style.display = 'block';
    }

    isConnected(userId: string): void {
        const connectingSpinnerDiv = this.getSpinner(userId);
        if (connectingSpinnerDiv === null) {
            return;
        }
        connectingSpinnerDiv.style.display = 'none';
    }

    isError(userId: string): void {
        console.info("isError", `div-${userId}`);
        const element = document.getElementById(`div-${userId}`);
        if(!element){
            return;
        }
        const errorDiv = element.getElementsByClassName('rtc-error').item(0) as HTMLDivElement|null;
        if (errorDiv === null) {
            return;
        }
        errorDiv.style.display = 'block';
    }
    isErrorScreenSharing(userId: string): void {
        this.isError(this.getScreenSharingId(userId));
    }


    private getSpinner(userId: string): HTMLDivElement|null {
        const element = document.getElementById(`div-${userId}`);
        if(!element){
            return null;
        }
        const connnectingSpinnerDiv = element.getElementsByClassName('connecting-spinner').item(0) as HTMLDivElement|null;
        return connnectingSpinnerDiv;
    }

    private getColorByString(str: String) : String|null {
        let hash = 0;
        if (str.length === 0) return null;
        for (let i = 0; i < str.length; i++) {
            hash = str.charCodeAt(i) + ((hash << 5) - hash);
            hash = hash & hash;
        }
        let color = '#';
        for (let i = 0; i < 3; i++) {
            const value = (hash >> (i * 8)) & 255;
            color += ('00' + value.toString(16)).substr(-2);
        }
        return color;
    }

    public addTriggerCloseJitsiFrameButton(id: String, Function: Function){
        this.triggerCloseJistiFrame.set(id, Function);
    }

    public removeTriggerCloseJitsiFrameButton(id: String){
        this.triggerCloseJistiFrame.delete(id);
    }

    private triggerCloseJitsiFrameButton(): void {
        for (const callback of this.triggerCloseJistiFrame.values()) {
            callback();
        }
    }
    /**
     * For some reasons, the microphone muted icon or the stream is not always up to date.
     * Here, every 30 seconds, we are "reseting" the streams and sending again the constraints to the other peers via the data channel again (see SimplePeer::pushVideoToRemoteUser)
    **/
    private pingCameraStatus(){
        /*setInterval(() => {
            console.log('ping camera status');
            this.triggerUpdatedLocalStreamCallbacks(this.localStream);
        }, 30000);*/
    }

    public addNewMessage(name: string, message: string, isMe: boolean = false){
        discussionManager.addMessage(name, message, isMe);

        //when there are new message, show discussion
        if(!discussionManager.activatedDiscussion) {
            discussionManager.showDiscussionPart();
        }
    }

    public addSendMessageCallback(userId: string|number, callback: SendMessageCallback){
        discussionManager.onSendMessageCallback(userId, callback);
    }

    get activatedDiscussion(){
        return discussionManager.activatedDiscussion;
    }

    public setUserInputManager(userInputManager : UserInputManager){
        this.userInputManager = userInputManager;
        discussionManager.setUserInputManager(userInputManager);
    }

    public getNotification(){
        //Get notification
        if (!DISABLE_NOTIFICATIONS && window.Notification && Notification.permission !== "granted") {
            if (this.checkNotificationPromise()) {
                Notification.requestPermission().catch((err) => {
                    console.error(`Notification permission error`, err);
                });
            } else {
                Notification.requestPermission();
            }
        }
    }

    /**
     * Return true if the browser supports the modern version of the Notification API (which is Promise based) or false
     * if we are on Safari...
     *
     * See https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API
     */
    private checkNotificationPromise(): boolean {
        try {
            Notification.requestPermission().then();
        } catch(e) {
            return false;
        }

        return true;
    }

    public createNotification(userName: string){
        if(this.focused){
            return;
        }
        if (window.Notification && Notification.permission === "granted") {
            const title = 'WorkAdventure';
            const options = {
                body: `Hi! ${userName} wants to discuss with you, don't be afraid!`,
                icon: '/resources/logos/logo-WA-min.png',
                image: '/resources/logos/logo-WA-min.png',
                badge: '/resources/logos/logo-WA-min.png',
            };
            new Notification(title, options);
            //new Notification(`Hi! ${userName} wants to discuss with you, don't be afraid!`);
        }
    }
}

export const mediaManager = new MediaManager();