pandoratospotify.js

var SPOTIFY_METADATA_API_ENDPOINT = 'http://ws.spotify.com/search/1/track.json';
var GOOGLE_GEOCODING_API_ENDPOINT = 'http://maps.googleapis.com/maps/api/geocode/json';
var countryCode = null;

$(document).ready(function(){	
  var $queue = $('<div></div>');
  $queue.queue(function(){
    navigator.geolocation.getCurrentPosition(function(position){
      $.get(GOOGLE_GEOCODING_API_ENDPOINT, {sensor:false, latlng:position.coords.latitude+','+position.coords.longitude}, function(locationData){
        if ('status' in locationData && locationData['status'] == 'OK') {
          $.each(locationData['results'][0]['address_components'], function(index, value){
            if (value['types'][0] == 'country') {
              countryCode = value['short_name'];
              $queue.dequeue();
            }
          });
        }
      }).error(function(){
        $queue.dequeue();
      });
    }, function(error){
      $queue.dequeue();
    });
  }).queue(function(){

    chrome.extension.onRequest.addListener(function(data){
      $('#loading').hide();
      if (data && data.length > 0) {
        $('#table-wrapper').show();
        $('#done').fadeIn();
      } else {
        $('#error').show();
        return;
      }
      $.each(data, function(index, value){
        window.setTimeout(function(){
          var query = 'artist:"' + value['artist'] + '"+track:"' + value['title'] + '"';
          $.get(SPOTIFY_METADATA_API_ENDPOINT, {q:query}, function(trackInfo){
            var isAvailable = false;
            if ('tracks' in trackInfo && trackInfo['tracks'].length > 0 && 'href' in trackInfo['tracks'][0]) {
              var idx = 0;
              var flag = false;
              if (countryCode !== null) {
                for (; idx < trackInfo['tracks'].length; idx++) {
                  if (trackInfo['tracks'][idx]['album']['availability']['territories']
                    && (trackInfo['tracks'][idx]['album']['availability']['territories'].indexOf(countryCode) != -1
                      || trackInfo['tracks'][idx]['album']['availability']['territories'].indexOf('worldwide') != -1)) {
                        flag = true;
                        break;
                      }
                }
              } else {
                flag = true;
              }
              if (flag === true) {
                isAvailable = true;
                $('textarea').val($('textarea').val()+trackInfo['tracks'][idx]['href']+"\n");
              }
            }
            $('tbody').append('<tr><td>' + value['artist'] + '</td><td>' + value['title'] + '</td><td>' + (function(flag){
              var okOrNo = flag ? 'ok' : 'no';
              return '<span class="alert ' + okOrNo + '">' + okOrNo + '</span>';
            }(isAvailable)) + '</td></tr>');
            if (index === data.length - 1) {
              $('textarea').focus().select();
            }
          });
        }, 110); // no more than 10 requests per second
      });
    });
    chrome.tabs.executeScript(null, {file: "lib/jquery-2.0.3.min.js"}, function(result){
      if (undefined === result) {
        $('#loading').hide();
        $('#error').fadeIn();
        return;
      }
      chrome.tabs.executeScript(null, {file: "lib/Thumbups.js"}, function(){
        chrome.tabs.executeScript(null, {file: "content_script.js"});
      });
    });
    $queue.dequeue();
  });
});