// ==UserScript==
// @name         AB Quick Download
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Download a page worth of torrents from AB
// @author       metonym
// @match        https://animebytes.tv/torrents.php*
// @match        https://animebytes.tv/better/single*
// @match        https://animebytes.tv/torrents2.php*
// @match        https://animebytes.tv/alltorrents.php*
// @match        https://animebytes.tv/collage.php*
// @exclude      https://animebytes.tv/torrents*action=editgroup*
// @grant        none
// @icon         https://animebytes.tv/favicon.ico
// ==/UserScript==
const TIME_TO_WAIT = 1500;

function delete_download_buttons() {
  const buttons = document.querySelectorAll("a.nym_download_button");
  console.log(buttons);
  buttons.forEach((button) => {
    button.parentNode.removeChild(button);
  });
}

function create_download_buttons() {
  var dl_links = document.querySelectorAll('a[title="Download torrent"]');
  var snatched_links = document.querySelectorAll("a.snatched-torrent");

  let snatched = []
  snatched_links.forEach((elm, i, arr) => {
    let torrent_id = elm.href.split("torrentid=")[1];
    snatched.push(torrent_id);
  });


  if (!dl_links.length || dl_links.length === 0) {
    return;
  }

  let all_links = [];
  let not_snatched_links = [];
  dl_links.forEach((elm) => {
    let torrent_id = elm.href.split("/")[4];
    if (!snatched.includes(torrent_id)) {
      not_snatched_links.push(elm);
    }
    all_links.push(elm);
  });

  if (!all_links.length || all_links.length === 0) {
    return;
  }

  let linkboxes = document.querySelectorAll("div .linkbox");

  let open_all_dl_links_button = document.createElement("a");
  open_all_dl_links_button.href = "#open_all_dl_links";
  open_all_dl_links_button.className = "nym_download_button";
  open_all_dl_links_button.onclick = () => { open_dl_links(all_links) };
  open_all_dl_links_button.innerText = ` [Download ${all_links.length} torrents]`;
  linkboxes[0].prepend(open_all_dl_links_button);

  let open_not_snatched_dl_links_button = document.createElement("a");
  if (not_snatched_links.length > 0) {
    open_not_snatched_dl_links_button.className = "nym_download_button";
    open_not_snatched_dl_links_button.href = "#open_not_snatched_dl_links";
    open_not_snatched_dl_links_button.onclick = () => { open_dl_links(not_snatched_links) };
    open_not_snatched_dl_links_button.innerText = `[Download ${not_snatched_links.length} not snatched torrents]`;
    linkboxes[0].prepend(open_not_snatched_dl_links_button);
  }

  if (linkboxes.length > 1) {
    let button_copy = open_all_dl_links_button.cloneNode(true);
    button_copy.onclick = () => { open_dl_links(all_links) };
    linkboxes[linkboxes.length - 1].append(button_copy);

    if (not_snatched_links.length > 0) {
      button_copy = open_not_snatched_dl_links_button.cloneNode(true);
      button_copy.onclick = () => { open_dl_links(not_snatched_links) };
      linkboxes[linkboxes.length - 1].append(button_copy);
    }
  }
}

function open_dl_links(links) {
  links.forEach((link, i) => {
     link.setAttribute('download', '')
     setTimeout(() => link.click(), TIME_TO_WAIT * i);
  });
}

function entry() {
  'use strict';

  // Your code here...
  const table = document.getElementById('torrent_table');
  create_download_buttons();

  // listen for any updates if more rows were dynamically added
  const observer = new MutationObserver(() => {
    delete_download_buttons();
    create_download_buttons();
  });

  if (table != undefined) {
    observer.observe(table.getElementsByTagName('tbody')[0], {childList: true});
  }
};

entry();