// ==UserScript==
// @name           Import Beatport Classic releases to MusicBrainz
// @description    One-click importing of releases from classic.beatport.com/release pages into MusicBrainz
// @version        2018.2.18.1
// @downloadURL    https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/beatport_classic_importer.user.js
// @updateURL      https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/beatport_classic_importer.user.js
// @include        http*://classic.beatport.com/release/*
// @require        https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js
// @require        lib/mbimport.js
// @require        lib/logger.js
// @require        lib/mbimportstyle.js
// @icon           https://raw.githubusercontent.com/murdos/musicbrainz-userscripts/master/assets/images/Musicbrainz_import_logo.png
// ==/UserScript==

// prevent JQuery conflicts, see http://wiki.greasespot.net/@grant
this.$ = this.jQuery = jQuery.noConflict(true);

if (!unsafeWindow) unsafeWindow = window;

$(document).ready(function(){
    MBImportStyle();

    var release_url = window.location.href.replace('/\?.*$/', '').replace(/#.*$/, '');
    var release = retrieveReleaseInfo(release_url);
    insertLink(release, release_url);

});

function retrieveReleaseInfo(release_url) {
  function contains_or(selector, list) {
    selectors = [];
    $.each(list, function(ind, value) {
      selectors.push(selector + ':contains("' + value.replace('"', '\\"') + '")');
    });
    return selectors.join(',');
  }
  var release_date_strings = [
    'Release Date', 'Fecha de lanzamiento', 'Date de sortie', 'Erscheinungsdatum', 'Data de lançamento', 'Releasedatum', "Data di uscita", "リリース予定日"
  ];
  var labels_strings = [
    'Labels', 'Sello', 'Gravadoras', "Label", "Etichetta", "Editora", "レーベル"
  ];
  var catalog_strings = [
    'Catalog', 'Catálogo', 'Catalogue', 'Katalog', 'Catalogus', "Catalogo", "カタログ"
  ];
  var release = {};

  // Release information global to all Beatport releases
  release.packaging = 'None';
  release.country = "XW";
  release.status = 'official';
  release.urls = [];
  release.urls.push({
    'url': release_url,
    'link_type': MBImport.URL_TYPES.purchase_for_download
  });

  var releaseDate = $(contains_or("td.meta-data-label", release_date_strings)).next().text().split("-");
  release.year = releaseDate[0];
  release.month = releaseDate[1];
  release.day = releaseDate[2];

  release.labels = [];
  release.labels.push(
    {
      name: $(contains_or("td.meta-data-label", labels_strings)).next().text(),
      catno: $(contains_or("td.meta-data-label", catalog_strings)).next().text()
    }
  );

  var release_artists = [];

  // Tracks
  var tracks = [];
  unsafeWindow.$( "span[data-json]" ).each(
    function ( index, tagSoup ) {
      var t = $.parseJSON($(tagSoup).attr('data-json'));
      release.title = t.release.name;

      var artists = [];
      t.artists.forEach(
        function (artist) {
          artists.push(artist.name);
	  release_artists.push(artist.name);
        }
      );
      var title = t.name;
      if (t.mixName && t.mixName !== 'Original Mix' && t.mixName !== 'Original') {
        title += ' (' + t.mixName + ')';
      }
      tracks.push({
        'artist_credit': MBImport.makeArtistCredits(artists),
        'title': title,
        'duration': t.lengthMs
      });
    }
  );

  var unique_artists = [];
  $.each(release_artists, function(i, el){
    if ($.inArray(el, unique_artists) === -1) {
      unique_artists.push(el);
    }
  });

  if (unique_artists.length > 4) {
    release.artist_credit = [ MBImport.specialArtist('various_artists') ];
  } else {
    release.artist_credit = MBImport.makeArtistCredits(unique_artists);
  }
  release.discs = [];
  release.discs.push( {
    'tracks': tracks,
    'format': "Digital Media"
  } );

  LOGGER.info("Parsed release: ", release);
  return release;
}

// Insert button into page under label information
function insertLink(release, release_url) {
    var edit_note = MBImport.makeEditNote(release_url, 'Beatport Classic');
    var parameters = MBImport.buildFormParameters(release, edit_note);

    var mbUI = $('<div class="musicbrainz-import">'
        + MBImport.buildFormHTML(parameters)
        + MBImport.buildSearchButton(release)
        + '</div>').hide();

    $(".release-detail-metadata").append(mbUI);
    $('form.musicbrainz_import').css({'display': 'inline-block', 'margin': '1px'});
    $('form.musicbrainz_import img').css({'display': 'inline-block'});
    mbUI.slideDown();
}