(function(context,$) {
  "use strict";

  context.JK = context.JK || {};

  context.JK.UIHelper = function(app) {
    var logger = context.JK.logger;
    var rest = new context.JK.Rest();
    var sessionUtils = context.JK.SessionUtils;

    function addSessionLike(sessionId, userId, $likeCountSelector, $likeButtonSelector) {
      rest.addSessionLike(sessionId, userId)
        .done(function(response) {
          $likeCountSelector.html(parseInt($likeCountSelector.text()) + 1);
          $likeButtonSelector.unbind("click");
        });
    }

    function addRecordingLike(recordingId, claimedRecordingId, userId, $likeCountSelector, $likeButtonSelector) {
      rest.addRecordingLike(recordingId, claimedRecordingId, userId)
        .done(function(response) {
          $likeCountSelector.html(parseInt($likeCountSelector.text()) + 1);
          $likeButtonSelector.unbind("click");
        });
    }

    function launchCommentDialog(options) {
      var commentDialog = new JK.CommentDialog(JK.app, options);
      commentDialog.initialize();
      return commentDialog.showDialog();
    }

    function launchShareDialog(entityId, entityType) {
      var shareDialog = new JK.ShareDialog(JK.app, entityId, entityType);
      shareDialog.initialize(JK.FacebookHelperInstance);
      return shareDialog.showDialog();
    }

    function launchRsvpSubmitDialog(sessionId) {
      var rsvpDialog = new JK.RsvpSubmitDialog(JK.app, sessionId);
      rsvpDialog.initialize();
      return rsvpDialog.showDialog();
    }

    function launchRsvpCancelDialog(sessionId, rsvpRequestId) {
      var rsvpDialog = new JK.RsvpCancelDialog(JK.app, sessionId, rsvpRequestId);
      rsvpDialog.initialize();
      return rsvpDialog.showDialog();
    }

    function launchRsvpCreateSlotDialog(sessionId, instrumentIds, rsvpRequesterName, createSlotsCallback) {
      var rsvpDialog = new JK.RsvpCreateSlotDialog(JK.app, sessionId, instrumentIds, rsvpRequesterName, createSlotsCallback);
      rsvpDialog.initialize();
      return rsvpDialog.showDialog();
    }

    function launchSessionStartDialog(session) {
      sessionUtils.ensureValidClient(app, context.JK.GearUtils, function() {
        var sessionStartDialog = new JK.SessionStartDialog(JK.app, session);
        sessionStartDialog.initialize();
        return sessionStartDialog.showDialog();
      });
    }

    this.addSessionLike = addSessionLike;
    this.addRecordingLike = addRecordingLike;
    this.launchCommentDialog = launchCommentDialog;
    this.launchShareDialog = launchShareDialog;
    this.launchRsvpSubmitDialog = launchRsvpSubmitDialog;
    this.launchRsvpCancelDialog = launchRsvpCancelDialog;
    this.launchRsvpCreateSlotDialog = launchRsvpCreateSlotDialog;
    this.launchSessionStartDialog = launchSessionStartDialog;

    return this;
  };

})(window,jQuery);