/* a widget that displays tweet - used in conjunction with the polemicWidget */

IriSP.TweetsWidget = function(Popcorn, config, Serializer) {

  IriSP.Widget.call(this, Popcorn, config, Serializer);

  this._displayingTweet = false;

  this._timeoutId = undefined; 

  this._hidden = false; /* hidden means that the createAnnotationWidget is shown */

};

IriSP.TweetsWidget.prototype = new IriSP.Widget();

IriSP.TweetsWidget.prototype.drawTweet = function(annotation) {

    if (this._hidden)

      return;

    var title = IriSP.formatTweet(annotation.content.title);

    var img = annotation.content.img.src;

    if (typeof(img) === "undefined" || img === "" || img === "None") {

      img = IriSP.widgetsDefaults.TweetsWidget.default_profile_picture;

    }

    var imageMarkup = IriSP.templToHTML("<img src='{{src}}' alt='user image'></img>", 

                                       {src : img});

    if (typeof(annotation.meta["dc:source"].content) !== "undefined") {

      var tweetContents = JSON.parse(annotation.meta["dc:source"].content);

      var creator = tweetContents.user.screen_name;

      var real_name = tweetContents.user.name;

      imageMarkup = IriSP.templToHTML("<a href='http://twitter.com/{{creator}}'><img src='{{src}}' alt='user image'></img></a>", 

                                       {src : img, creator: creator});

      var formatted_date = new Date(tweetContents.created_at).toLocaleDateString();

      title = IriSP.templToHTML("<a class='Ldt-tweet_userHandle' href='http://twitter.com/{{creator}}'>@{{creator}}</a> - " + 

                                "<div class='Ldt-tweet_realName'>{{real_name}}</div>" +

                                "<div class='Ldt-tweet_tweetContents'>{{{ contents }}}</div>" +

                                "<div class='Ldt-tweet_date'>{{ date }}</div>", 

                                {creator: creator, real_name: real_name, contents : title, date : formatted_date});

      this.selector.find(".Ldt-TweetReply").attr("href", "http://twitter.com/home?status=@" + creator + ":%20");

      var rtText = Mustache.to_html("http://twitter.com/home?status=RT @{{creator}}: {{text}}",

                                    {creator: creator, text: IriSP.encodeURI(annotation.content.title)});

      this.selector.find(".Ldt-Retweet").attr("href", rtText);

    }

    this.selector.find(".Ldt-tweetContents").html(title);

    this.selector.find(".Ldt-tweetAvatar").html(imageMarkup);

    this.selector.show("blind", 250); 

};

IriSP.TweetsWidget.prototype.displayTweet = function(annotation) {

  if (this._displayingTweet === false) {

    this._displayingTweet = true;

  } else {

    window.clearTimeout(this._timeoutId);

  }

  this.drawTweet(annotation);

  var time = this._Popcorn.currentTime();  

  this._timeoutId = window.setTimeout(IriSP.wrap(this, this.clearPanel), IriSP.widgetsDefaults.TweetsWidget.tweet_display_period);

};

IriSP.TweetsWidget.prototype.clearPanel = function() {  

    this._displayingTweet = false;

    this._timeoutId = undefined;

    this.closePanel();

};

IriSP.TweetsWidget.prototype.closePanel = function() {

    if (this._timeoutId != undefined) {

      /* we're called from the "close window" link */

      /* cancel the timeout */

      window.clearTimeout(this._timeoutId);

      this._timeoutId = null;

    }

    this.selector.hide("blind", 400);

};

/* cancel the timeout if the user clicks on the keep panel open button */

IriSP.TweetsWidget.prototype.keepPanel = function() {

    if (this._timeoutId != undefined) {

      /* we're called from the "close window" link */

      /* cancel the timeout */

      window.clearTimeout(this._timeoutId);

      this._timeoutId = null;

    }

};

IriSP.TweetsWidget.prototype.draw = function() {

  var _this = this;

  var tweetMarkup = IriSP.templToHTML(IriSP.tweetWidget_template, {"share_template" : IriSP.share_template});

  this.selector.append(tweetMarkup);

  this.selector.hide();

  this.selector.find(".Ldt-tweetWidgetMinimize").click(IriSP.wrap(this, this.closePanel));

  this.selector.find(".Ldt-tweetWidgetKeepOpen").click(IriSP.wrap(this, this.keepPanel));

  this._Popcorn.listen("IriSP.PolemicTweet.click", IriSP.wrap(this, this.PolemicTweetClickHandler));

  this._Popcorn.listen("IriSP.PlayerWidget.AnnotateButton.clicked", 

                        IriSP.wrap(this, this.handleAnnotateSignal));  

};

IriSP.TweetsWidget.prototype.PolemicTweetClickHandler = function(tweet_id) {  

  var index, annotation;

  for (index in this._serializer._data.annotations) {

    annotation = this._serializer._data.annotations[index];

    if (annotation.id === tweet_id)

      break;

  }

  if (annotation.id !== tweet_id)

      /* we haven't found it */

      return;

  this.displayTweet(annotation);

  return;

};

/** handle clicks on the annotate button by hiding/showing itself */

IriSP.TweetsWidget.prototype.handleAnnotateSignal = function() {

  if (this._hidden == false) {

    this.selector.hide();

    this._hidden = true;

  } else {

    if (this._displayingTweet !== false)

      this.selector.show();

    this._hidden = false;

  }

};