import { maxVideoDuration } from "../../config.js";

export default async function(obj) {
    let data = await fetch(`https://www.reddit.com/r/${obj.sub}/comments/${obj.id}/${obj.name}.json`).then((r) => { return r.json() }).catch(() => { return false });
    if (!data) return { error: 'ErrorCouldntFetch' };

    data = data[0]["data"]["children"][0]["data"];

    if (data.url.endsWith('.gif')) return { typeId: 1, urls: data.url };

    if (!"reddit_video" in data["secure_media"]) return { error: 'ErrorEmptyDownload' };
    if (data["secure_media"]["reddit_video"]["duration"] * 1000 > maxVideoDuration) return { error: ['ErrorLengthLimit', maxVideoDuration / 60000] };

    let video = data["secure_media"]["reddit_video"]["fallback_url"].split('?')[0],
        audio = video.match('.mp4') ? `${video.split('_')[0]}_audio.mp4` : `${data["secure_media"]["reddit_video"]["fallback_url"].split('DASH')[0]}audio`;
    await fetch(audio, { method: "HEAD" }).then((r) => {if (Number(r.status) !== 200) audio = ''}).catch(() => {audio = ''});

    let id = data["secure_media"]["reddit_video"]["fallback_url"].split('/')[3];
    if (!audio.length > 0) return { typeId: 1, urls: video };

    return {
        typeId: 2,
        type: "render",
        urls: [video, audio],
        audioFilename: `reddit_${id}_audio`,
        filename: `reddit_${id}.mp4`
    };
}