//@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("/"));

    /** @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;

    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() {
        // 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
                    }
                }));
            }
        });
    }

    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"]);

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

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

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

            const chunk = window["webpackChunk"].find(c => c[1][sid]);
            const chunkNames = chunk ? chunk[0].map(this.webpackChunkIdToJS) : null;
            if (chunkNames && (chunkNames.find(c =>
                c.startsWith("session-login.") ||
                c.startsWith("35463.")
            ))) {
                return null;
            }

            try {
                return this.webpackLoad?.(id);
            } catch (e) {
                this.log.w(`Failed to load webpack module ${id}`);
                this.log.dir(e);
                return null;
            }
        };

        /** @type {(id: any) => string} */
        this.webpackChunkIdToJS = Object.values(this.webpackLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`+".chunk.js"`) != -1);
        /** @type {(id: any) => string} */
        this.webpackIdToCSS = Object.values(this.webpackLoad).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.webpackLoadChunkLowLevel = Object.values(this.webpackLoad).find(v => typeof(v) == "function" && v.toString().indexOf(`document.head.appendChild`) != -1);
        const webpackLoadChunkLowLevelKey = Object.keys(this.webpackLoad).find(k => this.webpackLoad?.[k] == this.webpackLoadChunkLowLevel);
        if (!this.webpackLoadChunkLowLevel || !webpackLoadChunkLowLevelKey) {
            this.log.e("Couldn't obtain webpackLoadChunkLowLevel");
            return;
        }

        this.webpackLoad[webpackLoadChunkLowLevelKey] = function(name, cb, sid, id) {
            const _cb = cb;
            // self.log.v(`Webpack loading chunk ${id} (${sid}) from ${name}`);
            cb = (event) => {
                self.log.v(`Webpack loaded chunk ${id} (${sid}) from ${name}: ${event.type}`);
                return _cb(event);
            };
            const rv = self.webpackLoadChunkLowLevel?.(name, cb, sid, id);
            return rv;
        };

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

        // HACK: Load all chunks we could need when Jadefin initializes!
        // webpackChunkIdToJS contains all IDs either ahead of === or :
        // FIXME: Ideally, don't. This makes startup take ages and is unreliable!
        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;
        }

        // Grabbed by running this on various screens:
        // (()=>{let a = webpackChunk.flatMap(c => c[0]); return JSON.stringify(a.filter((v,i)=>a.indexOf(v)==i))})()
        let webpackChunkIdsWanted = [
            // Home
            JSON.parse("[1451,45642,23247,60815,81771,55931,1270,9886,12036,86897,59928,44965,56401,7495,17060,67224,67622,94048,36933,82363,36546,99377,82798,14577,78283,37658,94160,7184,83518,15277,71779,9911,82420,49398,32292,37821,74776,99994,87074,67942,60039,27017,65149,27182,4636,87530,4801,82255,99435,77077,71944,59874,21816,89409,79754,69285,43091,64380,40810,90186,87903,70118,64633,10905,68672,71318,86040,70555,41542,4836,30357,6270,49087,64706,19907,927,10672,2,56577,29593,55125,83354,49755,1680,39573,40394,60138,13151,65849,80835,14510,96307,16304,62155,84430,59258,39232,40465,18395,48979,68413,80183,85500,7011,22940,33067,15434,39435,78938,94047,55802,18084,79617,1998,15605,57949,21857,91737,28567,22424,44184,45568,5617,96084,40367,73233,52011,56422,27962,32762,35463,8372,28349,58782,29808,18119,24468,50777,84158,49275,35308,38965]"),
            // Login
            // JSON.parse("[1451,45642,23247,60815,81771,55931,1270,9886,12036,86897,59928,44965,56401,7495,17060,67224,67622,94048,36933,82363,36546,99377,82798,14577,69285,43091,64380,40810,90186,87903,70118,64633,10905,68672,71318,86040,70555,41542,4836,30357,6270,49087,64706,19907,927,10672,2,56577,29593,55125,83354,49755,1680,39573,40394,60138,13151,65849,80835,14510,96307,16304,62155,84430,59258,37658,94160,7184,83518,15277,71779,9911,82420,49398,32292,39232,40465,18395,48979,68413,60039,27017,65149,27182,4636,87530,4801,82255,99435,77077,71944,59874,21816,80183,85500,7011,22940,33067,15434,39435,78938,94047,55802,18084,79617,1998,15605,57949,21857,91737,28567,22424,44184,45568,5617,96084,40367,73233,52011,56422,27962,32762,35463,8372,28349,58782,29808,18119,24468,50777,84158,49275,35308,38965,11136,14044,16689,22943,27018,30010,39548,63365,94115,70594,98574,59015,58122,66935,28312,86355,88788,53147,89409,78283,37821,74776,99994,87074,67942,79754,1820,32125,28336,70712,93649,17244]"),
        ].flatMap(l => l);
        webpackChunkIdsWanted = webpackChunkIdsWanted.filter((id, i) => webpackChunkIdsWanted.indexOf(id) == i);

        // Grabbed through searching for module loads which still errored out.
        webpackChunkIdsWanted.push(
            ...Object.keys(this.webpackChunkJSs).filter(js => {
                return false ||
                js.startsWith("user-display.") ||
                js.startsWith("user-display-") ||
                js.startsWith("53147.") ||
                js.startsWith("activity.") ||
                js.startsWith("node_modules.@juggle.") ||
                false;
            }).map(js => this.webpackChunkJSs[js])
        );

        await Promise.all(webpackChunkIdsWanted.map(id => this.webpackLoadChunk?.(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.initMods();

        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.webpackLoad ? Object.values(this.webpackLoad).find(v => typeof(v) == "object" && Object.keys(v).length > 10) : null;
    }

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

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

    /**
     * @param {(e: any) => any} cb
     */
    findWebpackFunctions(cb) {
        return Object.keys(this.webpackModuleFuncs).map(id => this.webpackTryLoad?.(id)).filter(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.webpackLoad?.(id);
            } catch (e) {
                this.log.w(`Failed to load webpack module ${id}`);
                this.log.w(this.webpackModuleFuncs[id].toString());
                this.log.dir(e);
                unsafe.push(id);
            }
        }

        return unsafe;
    }

    /**
     * @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 initMods(list) {
        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);
            }
        }));

    }

})());