//@ts-check

import JadefinIntegrity from "./JadefinIntegrity.js";

import JadefinMod from "./JadefinMod.js";
import JadefinModules from "./JadefinModules.js";
import JadefinUtils from "./JadefinUtils.js";

export default JadefinIntegrity("Jadefin", import.meta.url, () => window["Jadefin"] = new (class Jadefin extends JadefinMod {
    modUrl = import.meta.url;
    root = this.modUrl.substring(0, this.modUrl.lastIndexOf("/"));
    version = this.root.substring(this.root.lastIndexOf("/") + 1);

    /** @type {{[id: string]: JadefinMod}} */
    mods = {};

    /** @type {Set<JadefinMod>} */
    _loadingMods_dedupe = new Set();
    /** @type {{module: JadefinMod, name: String, url: String}[]} */
    _loadingMods_all = [];
    /** @type {Promise<void>} */
    _loadingMods;

    /** @type {any} */
    _webpackModuleFuncs;

    _webpackBlacklistClient = JSON.parse(localStorage.getItem("jadefin-blacklist") || "[]");
    /** @type {typeof this._webpackBlacklistClient} */
    webpackBlacklistClient = new Proxy(this._webpackBlacklistClient, {
        deleteProperty: (target, property) => {
            delete target[property];

            localStorage.setItem("jadefin-blacklist", JSON.stringify(this._webpackBlacklistClient));

            return true;
        },

        set: (target, property, value, receiver) => {
            target[property] = value;

            localStorage.setItem("jadefin-blacklist", JSON.stringify(this._webpackBlacklistClient));

            return true;
        }
    });

    // To update, Jadefin.webpackBlacklistClient.push(0); and update this after a few reloads: JSON.stringify(Jadefin.webpackBlacklistClient)
    // Once done: Jadefin.webpackBlacklistClient.splice(0, Jadefin.webpackBlacklistClient.length)
    webpackBlacklistDefault = JSON.parse(`[0,"activity","node_modules.@mui.x-date-pickers","15088","node_modules.@mui.utils","node_modules.@mui.material","node_modules.react-transition-group","node_modules.date-fns.esm","23416","livetvtuner","syncPlay-core-players-GenericPlayer","47472","node_modules.@mui.system","55802"]`);

    /** @type {{[id: string]: any}} */
    _webpackCache = {};

    constructor() {
        super();

        this.log.i(`Loading from ${this.modUrl}`);
        this.log.v("Test Verbose");
        this.log.w("Test Warning");
        this.log.e("Test Error");

        this.initEarly();

        JadefinModules.Jadefin = this;

        this._loadingMods = this._loadMods();

        window["_JadefinLoaded"]();
    }

    initEarly() {
        if (this.webpackBlacklistClient.length) {
            this.webpackBlacklist = this.webpackBlacklistClient;
        } else {
            this.webpackBlacklist = this.webpackBlacklistDefault;
        }

        // Required for mods to be able to perform certain worker shenanigans.
        window.Worker = (class Worker extends window.Worker {
            constructor(scriptURL, options) {
                const args = {scriptURL, options};

                JadefinUtils.events.dispatchEvent(new CustomEvent(JadefinUtils.eventTypes.WORKER_CREATING, {
                    detail: {
                        args
                    }
                }));

                super(args.scriptURL, args.options);

                JadefinUtils.events.dispatchEvent(new CustomEvent(JadefinUtils.eventTypes.WORKER_CREATED, {
                    detail: {
                        args,
                        worker: this
                    }
                }));
            }
        });

        // Required with newer versions of Jellyfin and Jadefin: Fetch and patch runtime.bundle.js ourselves.
        // Thankfully this can happen async, Jellyfin will load whenever this is done.
        const runtimeBundleScript = Array.from(document.getElementsByTagName("script")).find(s => s.src.indexOf("runtime.jadefin.bundle.js") != -1);
        if (!runtimeBundleScript) {
            this._runtimeBundlePatched = false;
            this.log.e("Using vanilla runtime.bundle.js - some mods might not work properly!");
        } else {
            this._runtimeBundlePatched = true;
            const url = runtimeBundleScript.src.replace("runtime.jadefin.bundle.js", "runtime.bundle.js");
            this.log.i(`Fetching runtime.bundle.js from ${url}`);
            fetch(url).then(r => r.text()).then(async src => {
                this.log.i("Patching runtime.bundle.js");
                this._runtimeBundleOrig = src;

                try {
                    // __webpack_require__ in Compilation.js as reference
                    // var d=f[e]={id:e,loaded:!1,exports:{}}; in minified version
                    const matchRequire = src.match(/var [^=]+=([^\[]+)\[[^\[]+\]=\{[^}]*(?:id:[^;]+|loaded:[^;]+|exports:{}[^;]+){3};/);
                    if (!matchRequire || matchRequire.index === undefined) {
                        throw new Error("Couldn't find __webpack_require__");
                    }

                    src = src.substring(0, matchRequire.index) + `window["_JadefinWebpackCache"]=${matchRequire[1]};` + src.substring(matchRequire.index);

                    this.log.i("Running patched runtime.bundle.js");
                    eval(src);
                } catch (e) {
                    this._runtimeBundlePatched = false;
                    this.log.e("Patched runtime.bundle.js errored, running vanilla runtime.bundle.js as fallback");
                    this.log.dir(e);
                    eval(this._runtimeBundleOrig);
                }
            });
        }
    }

    async init(base) {
        const self = this;

        await super.init("Jadefin", this.modUrl);

        // Wait until webpackChunk and Emby exist.
        // It might be delayed due to the main jellyfin bundle being replaced by an inject script on Android.
        await JadefinUtils.waitUntil(() => window["webpackChunk"] && window["Emby"] && (!this._runtimeBundlePatched || window["_JadefinWebpackCache"]));

        this._webpackRawCache = window["_JadefinWebpackCache"];
        if (!this._webpackRawCache) {
            this.log.w("Couldn't obtain _webpackRawCache");
        }

        window["webpackChunk"].push([["custom_init"], {}, a => {
            /** @type {((id: number | string) => any & {[key: string]: any})} */
            this.webpackRawLoad = a;
        }]);

        if (!this.webpackRawLoad) {
            this.log.e("Couldn't obtain webpackRawLoad");
            return;
        }

        /** @type {(id: number | string) => any} */
        this.webpackLoad = id => {
            const sid = `${id}`;

            const cached = this._webpackCache[sid];
            if (cached) {
                return cached;
            }

            const name = this.webpackIdToName(id);

            if (this.webpackBlacklist !== this.webpackBlacklistClient) {
                const cachedRaw = this._webpackRawCache?.[sid];
                if (cachedRaw && cachedRaw.loaded) {
                    return this._webpackCache[sid] = cachedRaw.exports;
                }

                // Some modules are known to break things when loaded too early.
                if (name.startsWith("session-login") ||
                    name.startsWith("syncPlay-ui-") ||
                    name.startsWith("user-display") ||
                    name.startsWith("activity") ||
                    name.startsWith("node_modules.@juggle") ||
                    name.startsWith("node_modules.@mui") ||
                    false
                ) {
                    return null;
                }
            }

            // Some modules shall only be loaded via their intended codepaths.
            if (this.webpackBlacklist.indexOf(name) != -1) {
                return null;
            }

            try {
                return this._webpackCache[sid] = this.webpackRawLoad?.(id);
            } catch (e) {
                this.log.e(`Failed to load webpack module ${id} (${name})`);
                this.log.dir(e);
                this.webpackBlacklist.push(name);
                return null;
            }
        };

        /** @type {(id: any) => string} */
        this.webpackChunkIdToJS = Object.values(this.webpackRawLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`+".chunk.js"`) != -1);
        /** @type {(id: any) => string} */
        this.webpackIdToCSS = Object.values(this.webpackRawLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`+".css"`) != -1);
        if (!this.webpackChunkIdToJS || !this.webpackIdToCSS) {
            this.log.e("Couldn't obtain webpackChunkIdToJS or webpackIdToCSS");
            return;
        }

        /** @type {(name: any, cb: any, sid: any, id: any) => any} */
        this.webpackPreloadChunkLowLevel = Object.values(this.webpackRawLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`document.head.appendChild`) != -1);
        const webpackPreloadChunkLowLevelKey = Object.keys(this.webpackRawLoad).find(k => this.webpackRawLoad?.[k] == this.webpackPreloadChunkLowLevel);
        if (!this.webpackPreloadChunkLowLevel || !webpackPreloadChunkLowLevelKey) {
            this.log.e("Couldn't obtain webpackPreloadChunkLowLevel");
            return;
        }

        this.webpackRawLoad[webpackPreloadChunkLowLevelKey] = function(name, cb, sid, id) {
            const _cb = cb;
            // self.log.v(`Webpack preloading chunk ${id} (${sid}) from ${name}`);
            cb = (event) => {
                self.log.v(`Webpack preloaded chunk ${id} (${sid}) from ${name}: ${event.type}`);
                return _cb(event);
            };
            const rv = self.webpackPreloadChunkLowLevel?.(name, cb, sid, id);
            return rv;
        };

        /** @type {(id: any) => Promise<any>} */
        this.webpackPreloadChunk = Object.values(this.webpackRawLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`Object.keys(`) != -1 && v.toString().indexOf(`}),[])`) != -1);

        // webpackChunkIdToJS contains all IDs either ahead of === or :
        this.webpackChunkIds = [...this.webpackChunkIdToJS.toString().matchAll(/\d+(?=:|=)/g)].map(v => parseInt(v[0]));
        /** @type {any} */
        this.webpackChunkJSs = {};
        for (const id of this.webpackChunkIds) {
            this.webpackChunkJSs[this.webpackChunkIdToJS(id)] = id;
        }

        // Wait until everything else is ready.
        await JadefinUtils.waitUntil(() => this.webpackModuleFuncs);

        // this._webpackUnsafeModuleIDs = this.findUnsafeWebpackModules();

        const initing = [
            this.initHookHtmlVideoPlayer(),
        ];

        await this._loadingMods;
        await this._initLoadingMods();

        await Promise.all(initing);

        this.log.i("Ready");
    }

    async initHookHtmlVideoPlayer() {
        const self = this;

        await JadefinUtils.waitUntil(() => JadefinModules.htmlVideoPlayer);

        const _createMediaElement = JadefinModules.htmlVideoPlayer.prototype.createMediaElement;
        JadefinModules.htmlVideoPlayer.prototype.createMediaElement = function(options) {
            if (!JadefinUtils.htmlVideoPlayers.delete(this)) {
                self.log.i("Adding new htmlVideoPlayer");
                self.log.dir(this);

                JadefinUtils.htmlVideoPlayers.add(this);
                JadefinUtils.htmlVideoPlayer = this;
                JadefinUtils.events.dispatchEvent(new CustomEvent(JadefinUtils.eventTypes.HTML_VIDEO_PLAYER_CHANGED, {
                    detail: {
                        alive: true,
                        player: this
                    }
                }));
            }

            return _createMediaElement.call(this, options);
        }

        const _destroy = JadefinModules.htmlVideoPlayer.prototype.destroy;
        JadefinModules.htmlVideoPlayer.prototype.destroy = function() {
            if (JadefinUtils.htmlVideoPlayers.delete(this)) {
                self.log.i("Removing old htmlVideoPlayer");
                self.log.dir(this);

                JadefinUtils.events.dispatchEvent(new CustomEvent(JadefinUtils.eventTypes.HTML_VIDEO_PLAYER_CHANGED, {
                    detail: {
                        alive: false,
                        player: this
                    }
                }));
            }

            return _destroy.call(this);
        }
    }

    get webpackModuleFuncs() {
        return this._webpackModuleFuncs ??= this.webpackRawLoad ? Object.values(this.webpackRawLoad).find(v => typeof(v) == "object" && Object.keys(v).length > 10) : null;
    }

    /**
     * @param {(e: any) => any} cb
     */
    findWebpackRawLoad(cb) {
        return JadefinUtils.filterMap(Object.keys(this.webpackModuleFuncs).map(id => this.webpackLoad?.(id)), e => e && cb(e));
    }

    /**
     * @param {(e: any) => any} cb
     */
    findWebpackModules(cb) {
        return JadefinUtils.filterMap(Object.keys(this.webpackModuleFuncs).map(id => this.webpackLoad?.(id)?.default), e => e && cb(e));
    }

    /**
     * @param {(e: any) => any} cb
     */
    findWebpackFunctions(cb) {
        return JadefinUtils.filterMap(Object.keys(this.webpackModuleFuncs).map(id => this.webpackLoad?.(id)), e => e && e instanceof Function && cb(e));
    }

    /**
     * @param {any} [modules]
     */
    findUnsafeWebpackModules(modules) {
        const unsafe = [];

        for (const id of Object.keys(modules || this.webpackModuleFuncs)) {
            try {
                this.webpackRawLoad?.(id);
            } catch (e) {
                this.log.w(`Failed to load webpack module ${id}`);
                this.log.dir(this.webpackModuleFuncs[id]);
                this.log.dir(e);
                unsafe.push(id);
            }
        }

        return unsafe;
    }

    /**
     * @param {any} id
     * @return {string[]}
     */
    webpackIdToJSs(id) {
        if (!this.webpackChunkIdToJS) {
            return [ `${id}.unknown.chunk.js` ];
        }

        const sid = `${id}`;

        const meta = window["webpackChunk"].find(c => c[1][sid]);
        if (!meta) {
            return [ this.webpackChunkIdToJS(parseInt(sid)) ];
        }

        const jss = [];

        for (const pid of meta[0]) {
            jss.push(this.webpackChunkIdToJS(pid));
        }

        for (const cid of Object.keys(meta[1])) {
            jss.push(this.webpackChunkIdToJS(cid));
        }

        return jss;
    };

    /**
     * @param {any} id
     * @return {string}
     */
    webpackIdToJS(id) {
        const jss = this.webpackIdToJSs(id);

        return jss.find(c => !/^\d/.test(c)) || jss.find(c => c.startsWith(`${id}.`)) || `${id}.unknown.chunk.js`;
    };

    /**
     * @param {any} id
     * @return {string}
     */
    webpackIdToName(id) {
        const name = this.webpackIdToJS(id);

        if (name.endsWith(".bundle.js")) {
            return name.substring(0, name.length - ".bundle.js".length);
        }

        if (name.endsWith(".chunk.js")) {
            const split = name.lastIndexOf(".", name.length - ".chunk.js".length - 1);
            return name.substring(0, split);
        }

        return name;
    };

    /**
     * @param {string} name
     */
    getMod(name) {
        let found = this.mods[name];

        if (found) {
            return found;
        }

        for (let mod of Object.values(this.mods)) {
            if (mod.isMod(name)) {
                return mod;
            }
        }

        return undefined;
    }

    /**
     * @param {string[]} [list]
     */
    async _loadMods(list) {
        if (!list) {
            // HACK: I'm hosting Jadefin on my own Jellyfin subdomain, but want my own mods... oops!
            let listUrl = window.location.host == "jellyfin.0x0a.de" ? `${this.root}/mods_jade.json` : `${this.root}/mods.json`;
            listUrl = localStorage.getItem("jadefin-mods") || listUrl;

            this.log.i(`Loading main mod list ${listUrl}`);

            list = window["JadefinModList"] || (await fetch(listUrl).then(r => r.json()));
        }

        if (!list) {
            return;
        }

        await Promise.all(list.map(async (/** @type {string} */ entry) => {
            let isList = false;

            if (entry.startsWith("list:")) {
                isList = true;
                entry = entry.substring("list:".length);
            }

            let name = entry;
            let url = `${this.root}/mods/${entry}`;

            if (entry.startsWith("//")) {
                url = window.location.protocol + entry;

            } else if (entry.startsWith("/")) {
                url = window.location.origin + entry;

            } else if (entry.indexOf(":") < entry.indexOf("?")) {
                url = entry;
            }

            let split = name.indexOf("?");
            if (split != -1) {
                name = name.substring(0, split);
            }

            split = name.lastIndexOf("/");
            if (split != -1) {
                name = name.substring(split + 1);
            }

            split = name.lastIndexOf(".");
            if (split != -1) {
                name = name.substring(0, split);
            }

            if (isList) {
                this.log.i(`Loading mod list ${url}`);

                const list = await fetch(url).then(r => r.json());

                if (list) {
                    await this._loadMods(list);
                }

                return;
            }

            this.log.i(`Loading mod ${name} from ${url}`);

            try {
                /** @type {{default: JadefinMod}} */
                const mod = await import(`${url}`);
                const module = mod.default;

                if (this._loadingMods_dedupe.delete(module)) {
                    this._loadingMods_dedupe.add(module);
                    throw new Error("Duplicate module");
                }

                this._loadingMods_dedupe.add(module);

                this.mods[name] = module;

                this._loadingMods_all.push({module, name, url});
            } catch (e) {
                this.log.e(`Failed to load ${name}`);
                this.log.dir(e);
            }
        }));

    }

    async _initLoadingMods() {
        await Promise.all(this._loadingMods_all.map(async (mod) => {
            this.log.i(`Initializing mod ${mod.name}`);

            try {
                await mod.module.init(mod.name, mod.url);
            } catch (e) {
                this.log.e(`Failed to initialize ${mod.name}`);
                this.log.dir(e);
            }
        }));
    }

})());