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

//---   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);

    },

    getRemainingVideoInfo(id, callback) {
        String.prototype.decodeEscapeSequence = function() {
            return this.replace(/\\x([0-9A-Fa-f]{2})/g, function() {
                return String.fromCharCode(parseInt(arguments[1], 16));
            });
        };
        Http.request({
            method: 'GET', 
            url: `${constants.URLS.YT_URL}/watch`,
            params: { v: id }
        })
        .then((res) => {
            let dataUpdated = res.data.decodeEscapeSequence()
            let likes = dataUpdated.split(`"defaultIcon":{"iconType":"LIKE"},"defaultText":{"runs":[{"text":"`)[1].split(`"}],"accessibility":`)[0]
            let uploadDate = dataUpdated.split(`"uploadDate":"`)[1].split(`}},"trackingParams":"`)[0].slice(0, -2);
            let data = {
                "likes": likes,
                "uploadDate": uploadDate
            }
            logger("vidData", data)
            callback(data)
        })
        .catch((err) => {
            logger("codeRun", err, true);
            callback(err);
        });

    },

    getReturnYoutubeDislike(id, callback) {
        Http.request({
            method: 'GET', 
            url: `https://returnyoutubedislikeapi.com/votes`,
            params: { videoId: id }
        })
        .then((res) => {
            logger("rydData", res.data)
            callback(res.data)
        })
        .catch((err) => {
            logger("codeRun", err, true);
            callback(err);
        });
    }

}

//---   Recommendations   ---//

let InnertubeAPI;

// Loads Innertube object. This will be the object used in all future Innertube API calls. getAPI 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 innertubeModule = {

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

    async getVid(id) {
        try {
            return await InnertubeAPI.VidInfoAsync(id)
        } catch (error) {
            logger(constants.LOGGER_NAMES.watch, error, true)
        }
    },

    // It just works™
    // Front page recommendation
    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
        const final = contents.map((shelves) => {
            const video = shelves.shelfRenderer?.content?.horizontalListRenderer?.items

            if (video) return video.map((item) => {
                if (item) {
                    const renderedItem = useRender(item[Object.keys(item)[0]], Object.keys(item)[0])
                    console.log(renderedItem)
                    return renderedItem
                } else {return undefined} 
            })

        })
        console.log(final)
        return final
    },

    // This is the recommendations that exist under videos
    async viewRecommends(recommendList) {

    }
}

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