import cfg from "../config.mjs";
import db from "../sql.mjs";
import lib from "../lib.mjs";
import { getLevel } from "../admin.mjs";
import queue from "../queue.mjs";
import fetch from "flumm-fetch";
import fs from "fs";
import path from "path";

const regex = {
  all:   /https?:\/\/([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?/gi,
  yt:    /(?:youtube\.com\/\S*(?:(?:\/e(?:mbed))?\/|watch\/?\?(?:\S*?&?v\=))|youtu\.be\/)([a-zA-Z0-9_-]{6,11})/gi,
  imgur: /^https?:\/\/(\w+\.)?imgur.com\/(\w*\d\w*)+(\.[a-zA-Z]{3,4})?/gi
};

export default async bot => {

  return [{
    name: "parser",
    call: regex.all,
    active: true,
    f: e => {
      const links = e.message.match(regex.all)?.filter(link => !link.includes("f0ck.me")) || [];
      let repost;

      if(e.media)
        links.push(e.media);

      if(links.length === 0)
        return false;
      
      if(e.message.match(/(!|-)ignore/))
        return false;

      if(!e.channel.includes("f0ck") && !e.message.match(/(!|-)f0ck/i))
        return false;

      console.log(`parsing ${links.length} link${links.length > 1 ? "s" : ""}...`);

      links.forEach(async link => {
        if(regex.imgur.test(link))
          return await e.reply(`imgur is not supported!`);

        // check repost (link)
        repost = await queue.checkrepostlink(link);
        if(repost)
          return await e.reply(`repost motherf0cker (link): ${cfg.main.url.full}/${repost}`);

        // generate uuid
        const uuid = await queue.genuuid();

        const maxfilesize = (getLevel(e.user).level > 50 ? cfg.main.maxfilesize * cfg.main.adminmultiplier : cfg.main.maxfilesize);

        let ext;
        // read metadata
        if(!regex.yt.test(link)) {
          const tmphead = (await fetch(link, { method: "HEAD" })).headers["content-type"];
          if(!Object.keys(cfg.mimes).includes(tmphead))
            return;
          ext = cfg.mimes[tmphead];
        }

        const msg = await e.reply(`[charging the f0cker] downloading: ${uuid}`, {
          disable_notification: true
        });

        // download data
        const start = new Date();
        let source = (await queue.exec(`yt-dlp -f 'bv*[height<=720]+ba/b[height<=720] / wv*+ba/w' "${link}" --max-filesize ${maxfilesize / 1024}k --postprocessor-args "ffmpeg:-bitexact" -o "./tmp/${uuid}.%(ext)s" --print after_move:filepath`)).stdout.trim();
        
        if(!source) {
          if(e.type == 'tg')
            return await e.editMessageText(msg.result.chat.id, msg.result.message_id, "something went wrong lol");
          return await e.reply("something went wrong lol");
        }

        if(source.match(/larger than/)) {
          if(e.type == 'tg')
            return await e.editMessageText(msg.result.chat.id, msg.result.message_id, "too large lol");
          return await e.reply("too large lol");
        }
        const end = ~~((new Date() - start) / 1e3);

        // filesize check
        const size = fs.statSync(source).size;
        if(size > maxfilesize) {
          await fs.promises.unlink(source).catch(_=>{});
          if(e.type == 'tg')
            return await e.editMessageText(msg.result.chat.id, msg.result.message_id, `too large lol. (${lib.formatSize(size)} / ${lib.formatSize(maxfilesize)})`);
          return await e.reply(`too large lol. (${lib.formatSize(size)} / ${lib.formatSize(maxfilesize)})`);
        }
        
        // mime check
        const mime = (await queue.exec(`file --mime-type -b ${source}`)).stdout.trim();
        if(!Object.keys(cfg.mimes).includes(mime)) {
          if(e.type == 'tg')
            return await e.editMessageText(msg.result.chat.id, msg.result.message_id, `lol, go f0ck yourself (${mime})`);
          return await e.reply(`lol, go f0ck yourself (${mime})`);
        }

        // generate checksum
        const checksum = (await queue.exec(`sha256sum ${source}`)).stdout.trim().split(" ")[0];

        // check repost (checksum)
        repost = await queue.checkrepostsum(checksum);
        if(repost) {
          await fs.promises.unlink(source).catch(_=>{});
          if(e.type == 'tg')
            return await e.editMessageText(msg.result.chat.id, msg.result.message_id, `repost motherf0cker (checksum): ${cfg.main.url.full}/${repost}`);
          return await e.reply(`repost motherf0cker (checksum): ${cfg.main.url.full}/${repost}`);
        }

        const filename = path.basename(source);

        await fs.promises.copyFile(source, `./public/b/${filename}`);
        await fs.promises.unlink(source).catch(_=>{});

        await db`
          insert into items ${
            db({
              src: e.media ? "" : link,
              dest: filename,
              mime: mime,
              size: size,
              checksum: checksum,
              username: e.user.nick || e.user.username,
              userchannel: e.channel,
              usernetwork: e.network,
              stamp: ~~(new Date() / 1000),
              active: true
            }, 'src', 'dest', 'mime', 'size', 'checksum', 'username', 'userchannel', 'usernetwork', 'stamp', 'active')
          }
        `;

        const itemid = await queue.getItemID(filename);

        // generate thumbnail
        try {
          await queue.genThumbnail(filename, mime, itemid, link);
        } catch(err) {
          await queue.exec(`convert ./mugge.png ./public/t/${itemid}.webp`);
        }

        let speed = lib.calcSpeed(size, end);
        speed = !Number.isFinite(speed) ? "yes" : `${speed.toFixed(2)} Mbit/s`;

        // autotagger
        //await queue.tagSFW(itemid);

        const outputmsgirc = `[f0cked] link: ${cfg.main.url.full}/${itemid} | size: ${lib.formatSize(size)} | speed: ${speed}`;
        const outputmsgtg = `[f0cked] size: ${lib.formatSize(size)} | speed: ${speed}`;

        if(e.type == 'tg') {
          await e.deleteMessage(msg.result.chat.id, msg.result.message_id);
          await e.reply(outputmsgtg, {
            reply_markup: JSON.stringify({
              inline_keyboard: [[
                { text: 'sfw', callback_data: `b_sfw:${itemid}` },
                { text: 'nsfw', callback_data: `b_nsfw:${itemid}` },
                { text: 'tags', callback_data: `b_tags:${itemid}` },
                { text: '❌ delete', callback_data: `b_delete:${itemid}` }
              ], [
                { text: `open f0ck #${itemid}`, url: `${cfg.main.url.full}/${itemid}` }
              ]]
            })
          });
        }
        else {
          await e.reply(outputmsgirc);
        }
      });
    }
  }];
};