const axios = require("axios");
const cheerio = require("cheerio");
const dipto = require("tinyurl")
module.exports = {
  config: {
    name: "fb",
    version: "1.2",
    author: "NTKhang",
    countDown: 5,
    role: 0,
    shortDescription: {
      vi: "Tải video từ facebook",
      en: "Download video from facebook"
    },
    longDescription: {
      vi: "Tải video/story từ facebook (công khai)",
      en: "Download video/story from facebook (public)"
    },
    category: "?????",
    guide: {
      en: "   {pn} <url video/story>: tải video từ facebook"
    }
  },

  langs: {
    vi: {
      missingUrl: "Vui lòng nhập url video/story facebook (công khai) bạn muốn tải về",
      error: "Đã xảy ra lỗi khi tải video",
      downloading: "Đang tiến hành tải video cho bạn",
      tooLarge: "Rất tiếc không thể tải video cho bạn vì dung lượng lớn hơn 83MB"
    },
    en: {
      missingUrl: "⚠ Please enter the facebook video/story (public) url you want to download",
      error: "❌ An error occurred while downloading the video",
      downloading: "? Downloading video for you",
      tooLarge: "? Sorry, we can't download the video for you because the size is larger than 83MB"
    }
  },

  onStart: async function ({ args, message, getLang }) {
    if (!args[0])
      return message.reply(getLang("missingUrl"));
    const response = await fbDownloader(args[0]);
    if (response.success === false)
      return message.reply(getLang("error"));

    let success = false;
    const msgSend = message.reply(getLang("downloading"));

    for (const item of response.download) {
      const res = await axios({
        url: item.url,
        responseType: 'stream'
      });
      if (res.headers['content-length'] > 87031808)
        continue;
      res.data.path = global.utils.randomString(10) + '.mp4';
      const dip = await dipto.shorten(item.url);
      message.reply({
        body: `=== [ ${item.quality} ] ===nnDownload Link:n${dip}`,
        attachment: res.data
      }, async () => message.unsend((await msgSend).messageID));
      success = true;
      break;
    }

    if (!success) {
      message.unsend((await msgSend).messageID);
      return message.reply(getLang("tooLarge"));
    }
  }
};


async function fbDownloader(url) {
  try {
    const response1 = await axios({
      method: 'POST',
      url: 'https://snapsave.app/action.php?lang=en',
      headers: {
        "accept": "*/*",
        "accept-language": "vi,en-US;q=0.9,en;q=0.8",
        "content-type": "multipart/form-data",
        "sec-ch-ua": ""Chromium";v="110", "Not A(Brand";v="24", "Microsoft Edge";v="110"",
        "sec-ch-ua-mobile": "?0",
        "sec-ch-ua-platform": ""Windows"",
        "sec-fetch-dest": "empty",
        "sec-fetch-mode": "cors",
        "sec-fetch-site": "same-origin",
        "Referer": "https://snapsave.app/vn",
        "Referrer-Policy": "strict-origin-when-cross-origin"
      },
      data: {
        url
      }
    });

    let html;
    const evalCode = response1.data.replace('return decodeURIComponent', 'html = decodeURIComponent');
    eval(evalCode);
    html = html.split('innerHTML = "')[1].split('";n')[0].replace(/\"/g, '"');

    const $ = cheerio.load(html);
    const download = [];

    const tbody = $('table').find('tbody');
    const trs = tbody.find('tr');

    trs.each(function (i, elem) {
      const trElement = $(elem);
      const tds = trElement.children();
      const quality = $(tds[0]).text().trim();
      const url = $(tds[2]).children('a').attr('href');
      if (url != undefined) {
        download.push({
          quality,
          url
        });
      }
    });

    return {
      success: true,
      video_length: $("div.clearfix > p").text().trim(),
      download
    };
  }
  catch (err) {
    return {
      success: false
    };
  }
}