import router from "../router.mjs";
import cfg from "../../../config.json";
import url from "url";
import fs from "fs";
import sql from "../sql.mjs";
import lib from "../lib.mjs";
import tpl from "../tpl.mjs";

tpl.readdir("views");

const allowedMimes = [ "audio", "image", "video", "%" ];

router.get(/^\/(audio\/?|image\/?|video\/?)?(p\/\d+)?$/, async (req, res) => {
  const tmpmime = (allowedMimes.filter(n => req.url.split[0].startsWith(n))[0] ? req.url.split[0] : "");
  const mime = tmpmime + "%";
  const total = (await sql("items").where("mime", "like", mime).count("* as total"))[0].total;

  const pages = +Math.ceil(total / cfg.websrv.eps);
  const page = Math.min(pages, +req.url.split[tmpmime.length > 0 ? 2 : 1] || 1);
  const offset = (page - 1) * cfg.websrv.eps;

  const rows = await sql("items")
    .select("id", "mime")
    .where("mime", "like", mime)
    .orderBy("id", "desc")
    .offset(offset)
    .limit(cfg.websrv.eps);

  let cheat = [];
  for(let i = Math.max(1, page - 3); i <= Math.min(page + 3, pages); i++)
    cheat.push(i);

  rows.forEach(e => {
    if(!fs.existsSync(`public/t/${e.id}.png`))
      fs.copyFileSync("public/s/img/broken.png", `public/t/${e.id}.png`);
  });

  const data = {
    items: rows,
    pagination: {
      start: 1,
      end: pages,
      prev: (page > 1) ? page - 1 : null,
      next: (page < pages) ? page + 1 : null,
      page: page,
      cheat: cheat,
      link: `/${tmpmime ? tmpmime + "/" : ""}p/`
    },
    last: rows[rows.length - 1].id,
    filter: tmpmime ? tmpmime : undefined,
    themes: cfg.websrv.themes,
    theme: (typeof req.cookies.theme !== "undefined" && cfg.websrv.themes.includes(req.cookies.theme)) ? req.cookies.theme : cfg.websrv.themes[0]
  };

  res.reply({ body: tpl.render("views/index", data) });
});

router.get(/^\/((audio\/|video\/|image\/)?[0-9]+)$/, async (req, res) => {
  let id = false;
  let mime = "";
  let tmpmime = false;
  
  if(allowedMimes.filter(n => req.url.split[0].startsWith(n))[0] ? req.url.split[0] : "") {
    mime = tmpmime = req.url.split[0];
    id = +req.url.split[1];
  }
  else {
    mime = "%";
    id = +req.url.split[0];
  }
  mime += "/%";

  const query = (await sql("items").where("id", id).andWhere("mime", "like", mime).limit(1))?.shift();

  if(!query?.id)
    return res.redirect("/404");

  const tags = await sql("tags_assign").leftJoin("tags", "tags.id", "tags_assign.tag_id").where("tags_assign.item_id", id);

  const qmin = await sql("items").select("id").where("mime", "like", mime).orderBy("id").limit(1);
  const qmax = await sql("items").select("id").where("mime", "like", mime).orderBy("id", "desc").limit(1);

  const qnext = (await sql("items").select("id").where("id", ">", id).andWhere("mime", "like", mime).orderBy("id").limit(3)).reverse();
  const qprev = await sql("items").select("id").where("id", "<", id).andWhere("mime", "like", mime).orderBy("id", "desc").limit(3);

  const cheat = qnext.concat([{ id: id }].concat(qprev)).map(e => +e.id);
  const next = qnext[qnext.length - 1] ? qnext[qnext.length - 1].id : false;
  const prev = qprev[0] ? qprev[0].id : false;

  for(let t = 0; t < tags.length; t++)
    tags[t].tag = tags[t].tag.replace(/[\u00A0-\u9999<>\&]/g, i => '&#'+i.charCodeAt(0)+';');

  const data = {
    user: {
      name: query.username,
      channel: query.userchannel,
      network: query.usernetwork
    },
    item: {
      id: query.id,
      src: {
        long: query.src,
        short: url.parse(query.src).hostname,
      },
      thumbnail: `${cfg.websrv.paths.thumbnails}/${query.id}.png`,
      coverart: `${cfg.websrv.paths.coverarts}/${query.id}.png`,
      dest: `${cfg.websrv.paths.images}/${query.dest}`,
      mime: query.mime,
      size: lib.formatSize(query.size),
      timestamp: lib.timeAgo(new Date(query.stamp * 1e3).toISOString()),
      tags: tags
    },
    title: `${query.id} - f0ck.me`,
    pagination: {
      start: qmax[0].id,
      end: qmin[0].id,
      prev: next,
      next: prev,
      page: query.id,
      cheat: cheat,
      link: `/${tmpmime ? tmpmime + "/" : ""}`
    },
    filter: tmpmime ? tmpmime : undefined,
    themes: cfg.websrv.themes,
    theme: (typeof req.cookies.theme !== "undefined" && cfg.websrv.themes.includes(req.cookies.theme)) ? req.cookies.theme : cfg.websrv.themes[0],
    lul: cfg.websrv.phrases[~~(Math.random() * cfg.websrv.phrases.length)]
  };
  res.reply({ body: tpl.render("views/item", data) });
});

router.get(/^\/(about)$/, (req, res) => {
  res.reply({
    body: tpl.render(`views/${req.url.split[0]}`, {
      themes: cfg.websrv.themes,
      theme: (typeof req.cookies.theme !== "undefined" && cfg.websrv.themes.includes(req.cookies.theme)) ? req.cookies.theme : cfg.websrv.themes[0]
    })
  });
});