//---   Modules/Imports   ---//
import { Http } from '@capacitor-community/http';
import Innertube from './innertube'
import constants from '../static/constants';

//---   Logger Function   ---//
function logger(func, data, isError = false) {
    searchModule.logs.unshift({
        name: func,
        time: Date.now(),
        data: data,
        error: isError
    })
}

//---   Youtube Base Parser   ---//
function youtubeParse(html, callback) {
    //---   Replace Encoded Characters   ---///
    html = html.replace(/\\x([0-9A-F]{2})/ig, (...items) => { return String.fromCharCode(parseInt(items[1], 16)); });
    //---   Properly Format JSON   ---//
    html = html.replaceAll("\\\\\"", "");
    //---   Parse JSON   ---//
    html = JSON.parse(html);

    //---   Get Results   ---// ( Thanks To appit-online On Github ) -> https://github.com/appit-online/youtube-search/blob/master/src/lib/search.ts
    let results;
    if (html && html.contents && html.contents.sectionListRenderer && html.contents.sectionListRenderer.contents &&
        html.contents.sectionListRenderer.contents.length > 0 &&
        html.contents.sectionListRenderer.contents[0].itemSectionRenderer &&
        html.contents.sectionListRenderer.contents[0].itemSectionRenderer.contents.length > 0) {
        results = html.contents.sectionListRenderer.contents[0].itemSectionRenderer.contents;
        logger(constants.LOGGER_NAMES.search, results);
        callback(results);
    } else {
        try {
            results = JSON.parse(html.split('{"itemSectionRenderer":{"contents":')[html.split('{"itemSectionRenderer":{"contents":').length - 1].split(',"continuations":[{')[0]);
            logger(constants.LOGGER_NAMES.search, results);
            callback(results);
        } catch (e) {}
        try {
            results = JSON.parse(html.split('{"itemSectionRenderer":')[html.split('{"itemSectionRenderer":').length - 1].split('},{"continuationItemRenderer":{')[0]).contents;
            logger(constants.LOGGER_NAMES.search, results);
            callback(results);
        } catch (e) {}
    }
}

//---   Search Main Function   ---//
function youtubeSearch(text, callback) {
    Http.request({
            method: 'GET',
            url: `${constants.URLS.YT_URL}/results`,
            params: { q: text, hl: "en" }
        })
        .then((res) => {
            //---   Get HTML Only   ---//
            let html = res.data;
            //---   Isolate The Script Containing Video Information   ---//
            html = html.split("var ytInitialData = '")[1].split("';</script>")[0];

            youtubeParse(html, (data) => {
                callback(data);
            })



        })
        .catch((err) => {
            logger(constants.LOGGER_NAMES.search, err, true);
            callback(err);
        });
}

const searchModule = {
    logs: new Array(),

    //---   Get YouTube's Search Auto Complete   ---//
    autoComplete(text, callback) {
        Http.request({
                method: 'GET',
                url: `${constants.URLS.YT_SUGGESTIONS}/search`,
                params: { client: 'youtube', q: text }
            })
            .then((res) => {
                logger(constants.LOGGER_NAMES.autoComplete, res);
                callback(res.data);
            })
            .catch((err) => {
                logger(constants.LOGGER_NAMES.autoComplete, err, true);
                callback(err);
            });
    },

    search(text, callback) {

        let results = new Array();
        youtubeSearch(text, (videos) => {
            for (const i in videos) {
                const video = videos[i];

                if (video.compactVideoRenderer) {
                    //---   If Entry Is A Video   ---//
                    results.push({
                        id: video.compactVideoRenderer.videoId,
                        title: video.compactVideoRenderer.title.runs[0].text,
                        runtime: video.compactVideoRenderer.lengthText.runs[0].text,
                        uploaded: video.compactVideoRenderer.publishedTimeText.runs[0].text,
                        views: video.compactVideoRenderer.viewCountText.runs[0].text,
                        thumbnails: video.compactVideoRenderer.thumbnail.thumbnails
                    })
                } else {
                    //---   If Entry Is Not A Video   ---//
                    //logger(constants.LOGGER_NAMES.search, { type: "Error Caught Successfully", error: video }, true);
                }


            }
        })
        callback(results);

    },

    getVideo(id) {
        return id;
    }

}

//---   Recommendations   --//

let InnertubeAPI;

// Loads Innertube object. This will be the object used in all future Innertube API calls. Code provided by Lightfire228 (https://github.com/Lightfire228)
// These are just a way for the backend Javascript to communicate with the front end Vue scripts. Essentially a wrapper inside a wrapper
const recommendationModule = {

    async getAPI() {
        if (!InnertubeAPI) {
            InnertubeAPI = await Innertube.createAsync((message, isError) => { logger(constants.LOGGER_NAMES.innertube, message, isError); })
        }
        return InnertubeAPI;
    },

    async getVid(id) {

        // temporary test

        const html = await Http.get({
            url: "https://m.youtube.com/watch?v=U-9M-BjFYMc&t=8s&pbj=1",
            params: {},
            headers: {
                accept: '*/*',
                'user-agent': 'Mozilla/5.0 (Linux; Android 10; WP7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.101 Mobile Safari/537.36',
                'content-type': 'application/json',
                'accept-language': 'en-US,en;q=0.9',
                'x-goog-authuser': 0,
                'x-goog-visitor-id': 'CgtsaVdQdGhfbVNOMCiC0taRBg%3D%3D',
                'x-youtube-client-name': 2,
                'x-youtube-client-version': '2.20220318.00.00',
                'x-youtube-chrome-connected': 'source=Chrome,mode=0,enable_account_consistency=true,supervised=false,consistency_enabled_by_default=false',
                'x-origin': 'https://m.youtube.com',
                origin: 'https://m.youtube.com',
                referer: 'https://m.youtube.com/watch?v=U-9M-BjFYMc'
            }
        }).catch((error) => error);
        console.log(html.data)
        return InnertubeAPI.getVidInfoAsync(id).data;
    },

    // It just works™
    async recommend() {
        const response = await InnertubeAPI.getRecommendationsAsync();
        if (!response.success) throw new Error("An error occurred and innertube failed to respond")

        const contents = response.data.contents.singleColumnBrowseResultsRenderer.tabs[0].tabRenderer.content.sectionListRenderer.contents
        return contents.map((shelves) => {
            const video = shelves.shelfRenderer?.content?.horizontalListRenderer?.items

            if (video) return video.map((item) => {
                item = item.gridVideoRenderer
                if (item) return {
                    id: item.videoId,
                    title: item.title?.runs[0].text,
                    thumbnail: this.getThumbnail(item.videoId),
                    channel: item.shortBylineText.runs[0] ? item.shortBylineText.runs[0] : item.longBylineText.runs[0],
                    channelThumbnail: item.channelThumbnail?.thumbnails[0],
                    metadata: {
                        published: item.publishedTimeText?.runs[0].text,
                        views: item.shortViewCountText?.runs[0].text,
                        length: item.publishedTimeText?.runs[0].text,
                        overlay: item.thumbnailOverlays?.map((overlay) =>{overlay.thumbnailOverlayTimeStatusRenderer?.text.runs[0].runs}),
                    },
                };
                else return undefined
            })

        })
    },

    getThumbnail: (id, resolution) => Innertube.getThumbnail(id, resolution)
}

//---   Start   ---//
export default ({ app }, inject) => {
    inject('youtube', {...searchModule, ...recommendationModule, })
    inject("logger", logger)
}
logger(constants.LOGGER_NAMES.init, "Program Started");