var Vkontakte;
Vkontakte = (function() {
  Vkontakte.prototype.qr = null;
  function Vkontakte(api_id) {
    this.api_id = api_id;
  }
  Vkontakte.prototype.init = function() {
    this.qr = [];
    VK.init({
      apiId: this.api_id
    });
    return VK.Auth.getLoginStatus(this.authInfo);
  };
  Vkontakte.prototype.authInfo = function(response) {
    var _session;
    if (typeof response !== 'undefined' && response.session) {
      _session = new Session(response.session);
      $('#vk_login, .auth_notice').hide();
      $('#vk_logout').css({
        display: 'block'
      });
      if ($('#search_field').length > 0) {
        $('#search_field').focus();
      }
      _session.query('/user/auth', {}, function(ar) {
        if (ar.newbie) {
          VK.Api.call('getVariable', {
            key: 1281
          }, function(r) {
            return _session.query('/user/update', {
              name: r.response
            }, function(ar2) {
              _session.setUser(ar2.user);
              return $('.header-container .hello .greating').text('Hi there, ' + (_session.getUser().name ? _session.getUser().name : '%username%') + '!');
            });
          });
        } else {
          _session.setUser(ar.user);
        }
        return $('.header-container .hello .greating').text('Hi there, ' + (_session.getUser().name ? _session.getUser().name : '%username%') + '!');
      });
    } else {
      _session = new Session({});
      $('#vk_login, .auth_notice').css({
        display: 'block'
      });
      $('#vk_logout').hide();
    }
    return window._session = _session;
  };
  Vkontakte.prototype.loadTracksData = function(artist, track, duration, callback) {
    var query, track_prepared, url;
    track_prepared = track.replace(/\(.*\)/i, '').split('/')[0];
    query = artist + ' ' + track_prepared;
    if (url = _vkontakte.getQR(query)) {
      return callback(url);
    } else {
      return VK.Api.call('audio.search', {
        q: query
      }, function(r) {
        r.response.splice(0, 1);
        url = _vkontakte.matchPerfectResult(r.response, artist, track, duration);
        _vkontakte.addQR(query, url);
        return callback(url);
      });
    }
  };
  Vkontakte.prototype.matchPerfectResult = function(data, artist, track, duration) {
    var best_result, best_score, delta, item, score, _i, _len;
    duration = duration.split(':');
    duration = parseInt(duration[0], 10) * 60 + parseInt(duration[1], 10);
    best_score = 0;
    best_result = null;
    for (_i = 0, _len = data.length; _i < _len; _i++) {
      item = data[_i];
      score = 0;
      item.artist = item.artist.trim();
      item.title = item.title.trim();
      if (item.artist === artist) {
        score += 10;
      } else if (item.artist.split(artist).length === 2) {
        score += 5;
      } else if (item.title.split(artist).length === 2) {
        score += 4;
      }
      if (item.title === track) {
        score += 10;
      } else if (item.title.split(track).length === 2) {
        score += 5;
      }
      if (parseInt(item.duration, 10) === duration) {
        score += 15;
      } else {
        delta = Math.abs(parseInt(item.duration, 10) - duration);
        if (delta < 10) {
          score += 10 - delta;
        }
      }
      if (score > best_score) {
        best_score = score;
        best_result = item;
      }
      if (score === 35) {
        return best_result.url;
      }
    }
    return best_result.url;
  };
  Vkontakte.prototype.addQR = function(query, url) {
    return this.qr[query] = url;
  };
  Vkontakte.prototype.getQR = function(query) {
    if (this.qr[query] != null) {
      this.qr[query];
    }
    return false;
  };
  return Vkontakte;
})();
$(function() {
  $('#vk_login').click(function() {
    return VK.Auth.login(_vkontakte.authInfo(), 8);
  });
  return $('#vk_logout').click(function() {
    return VK.Auth.logout(_vkontakte.authInfo());
  });
});