/*
The MIT License

Copyright (c) http://tweet.seaofclouds.com/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

*/

(function($) {

  $.fn.tweet = function(o){
    var s = $.extend({
      username: null,                           // [string or array] required unless using the 'query' option; one or more twitter screen names
      list: null,                               // [string]   optional name of list belonging to username
      favorites: false,                         // [boolean]  display the user's favorites instead of his tweets
      query: null,                              // [string]   optional search query
      avatar_size: null,                        // [integer]  height and width of avatar if displayed (48px max)
      count: 3,                                 // [integer]  how many tweets to display?
      fetch: null,                              // [integer]  how many tweets to fetch via the API (set this higher than 'count' if using the 'filter' option)
      retweets: true,                           // [boolean]  whether to fetch (official) retweets (not supported in all display modes)
      intro_text: null,                         // [string]   do you want text BEFORE your your tweets?
      outro_text: null,                         // [string]   do you want text AFTER your tweets?
      join_text:  null,                         // [string]   optional text in between date and tweet, try setting to "auto"
      auto_join_text_default: "i said,",        // [string]   auto text for non verb: "i said" bullocks
      auto_join_text_ed: "i",                   // [string]   auto text for past tense: "i" surfed
      auto_join_text_ing: "i am",               // [string]   auto tense for present tense: "i was" surfing
      auto_join_text_reply: "i replied to",     // [string]   auto tense for replies: "i replied to" @someone "with"
      auto_join_text_url: "i was looking at",   // [string]   auto tense for urls: "i was looking at" http:...
      loading_text: null,                       // [string]   optional loading text, displayed while tweets load
      refresh_interval: null ,                  // [integer]  optional number of seconds after which to reload tweets
      twitter_url: "twitter.com",               // [string]   custom twitter url, if any (apigee, etc.)
      twitter_api_url: "api.twitter.com",       // [string]   custom twitter api url, if any (apigee, etc.)
      twitter_search_url: "search.twitter.com", // [string]   custom twitter search url, if any (apigee, etc.)
      template: "{avatar}{join}{text}{time}",   // [string or function] template used to construct each tweet <li> - see code for available vars
      comparator: function(tweet1, tweet2) {    // [function] comparator used to sort tweets (see Array.sort)
        return tweet2["tweet_time"] - tweet1["tweet_time"];
      },
      filter: function(tweet) {                 // [function] whether or not to include a particular tweet (be sure to also set 'fetch')
        return true;
      },
	  callback: function() {}
    }, o);

    $.fn.extend({
      linkUrl: function() {
        var returning = [];
        // See http://daringfireball.net/2010/07/improved_regex_for_matching_urls
        var regexp = /\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))/gi;
        this.each(function() {
          returning.push(this.replace(regexp,
                                      function(match) {
                                        var url = (/^[a-z]+:/i).test(match) ? match : "http://"+match;
                                        return "<a href=\""+url+"\">"+match+"</a>";
                                      }));
        });
        return $(returning);
      },
      linkUser: function() {
        var returning = [];
        var regexp = /[\@]+([A-Za-z0-9-_]+)/gi;
        this.each(function() {
          returning.push(this.replace(regexp,"<a href=\"http://"+s.twitter_url+"/$1\">@$1</a>"));        });
        return $(returning);
      },
      linkHash: function() {
        var returning = [];
        var regexp = /(?:^| )[\#]+([A-Za-z0-9-_]+)/gi;
        var usercond = s.username ? '&from='+s.username.join("%2BOR%2B") : '';
        this.each(function() {
          returning.push(this.replace(regexp, ' <a href="http://'+s.twitter_search_url+'/search?q=&tag=$1&lang=all'+usercond+'">#$1</a>'));
        });
        return $(returning);
      },
      capAwesome: function() {
        var returning = [];
        this.each(function() {
          returning.push(this.replace(/\b(awesome)\b/gi, '<span class="awesome">$1</span>'));
        });
        return $(returning);
      },
      capEpic: function() {
        var returning = [];
        this.each(function() {
          returning.push(this.replace(/\b(epic)\b/gi, '<span class="epic">$1</span>'));
        });
        return $(returning);
      },
      makeHeart: function() {
        var returning = [];
        this.each(function() {
          returning.push(this.replace(/(&lt;)+[3]/gi, "<tt class='heart'>&#x2665;</tt>"));
        });
        return $(returning);
      }
    });

    function parse_date(date_str) {
      // The non-search twitter APIs return inconsistently-formatted dates, which Date.parse
      // cannot handle in IE. We therefore perform the following transformation:
      // "Wed Apr 29 08:53:31 +0000 2009" => "Wed, Apr 29 2009 08:53:31 +0000"
      return Date.parse(date_str.replace(/^([a-z]{3})( [a-z]{3} \d\d?)(.*)( \d{4})$/i, '$1,$2$4$3'));
    }

    function relative_time(date) {
      var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
      var delta = parseInt((relative_to.getTime() - date) / 1000, 10);
      var r = '';
      if (delta < 60) {
        r = delta + ' saniye �nce';
      } else if(delta < 120) {
        r = '1 dakika �nce';
      } else if(delta < (45*60)) {
        r = (parseInt(delta / 60, 10)).toString() + ' dakika �nce';
      } else if(delta < (2*60*60)) {
        r = '1 saat �nce';
      } else if(delta < (24*60*60)) {
        r = '' + (parseInt(delta / 3600, 10)).toString() + ' saat �nce';
      } else if(delta < (48*60*60)) {
        r = 'd�n';
      } else {
        r = (parseInt(delta / 86400, 10)).toString() + ' g�n �nce';
      }
      return ' ' + r;
    }

    function build_url() {
      var proto = ('https:' == document.location.protocol ? 'https:' : 'http:');
      var count = (s.fetch === null) ? s.count : s.fetch;
      if (s.list) {
        return proto+"//"+s.twitter_api_url+"/1/"+s.username[0]+"/lists/"+s.list+"/statuses.json?per_page="+count+"&callback=?";
      } else if (s.favorites) {
        return proto+"//"+s.twitter_api_url+"/favorites/"+s.username[0]+".json?count="+s.count+"&callback=?";
      } else if (s.query === null && s.username.length == 1) {
        return proto+'//'+s.twitter_api_url+'/1/statuses/user_timeline.json?screen_name='+s.username[0]+'&count='+count+(s.retweets ? '&include_rts=1' : '')+'&callback=?';
      } else {
        var query = (s.query || 'from:'+s.username.join(' OR from:'));
        return proto+'//'+s.twitter_search_url+'/search.json?&q='+encodeURIComponent(query)+'&rpp='+count+'&callback=?';
      }
    }

    return this.each(function(i, widget){
      var list = $('<ul class="tweet_list">').appendTo(widget);
      var intro = '<p class="tweet_intro">'+s.intro_text+'</p>';
      var outro = '<p class="tweet_outro">'+s.outro_text+'</p>';
      var loading = $('<p class="loading">'+s.loading_text+'</p>');

      if(s.username && typeof(s.username) == "string"){
        s.username = [s.username];
      }

      var expand_template = function(info) {
        if (typeof s.template === "string") {
          var result = s.template;
          for(var key in info)
            result = result.replace(new RegExp('{'+key+'}','g'), info[key]);
          return result;
        } else return s.template(info);
      };

      if (s.loading_text) $(widget).append(loading);
      $(widget).bind("load", function(){
        $.getJSON(build_url(), function(data){
          if (s.loading_text) loading.remove();
          if (s.intro_text) list.before(intro);
          list.empty();

          var tweets = $.map(data.results || data, function(item){
            var join_text = s.join_text;

            // auto join text based on verb tense and content
            if (s.join_text == "auto") {
              if (item.text.match(/^(@([A-Za-z0-9-_]+)) .*/i)) {
                join_text = s.auto_join_text_reply;
              } else if (item.text.match(/(^\w+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+) .*/i)) {
                join_text = s.auto_join_text_url;
              } else if (item.text.match(/^((\w+ed)|just) .*/im)) {
                join_text = s.auto_join_text_ed;
              } else if (item.text.match(/^(\w*ing) .*/i)) {
                join_text = s.auto_join_text_ing;
              } else {
                join_text = s.auto_join_text_default;
              }
            }

            // Basic building blocks for constructing tweet <li> using a template
            var screen_name = item.from_user || item.user.screen_name;
            var source = item.source;
            var user_url = "http://"+s.twitter_url+"/"+screen_name;
            var avatar_size = s.avatar_size;
            var avatar_url = item.profile_image_url || item.user.profile_image_url;
            var tweet_url = "http://"+s.twitter_url+"/"+screen_name+"/statuses/"+item.id_str;
            var retweet = (typeof(item.retweeted_status) != 'undefined');
            var retweeted_screen_name = retweet ? item.retweeted_status.user.screen_name : null;
            var tweet_time = parse_date(item.created_at);
            var tweet_relative_time = relative_time(tweet_time);
            var tweet_raw_text = retweet ? ('RT @'+retweeted_screen_name+' '+item.retweeted_status.text) : item.text; // avoid '...' in long retweets
            var tweet_text = $([tweet_raw_text]).linkUrl().linkUser().linkHash()[0];

            // Default spans, and pre-formatted blocks for common layouts
            var user = '<a class="tweet_user" href="'+user_url+'">'+screen_name+'</a>';
            var join = ((s.join_text) ? ('<span class="tweet_join"> '+join_text+' </span>') : ' ');
            var avatar = (avatar_size ?
                          ('<a class="tweet_avatar" href="'+user_url+'"><img src="'+avatar_url+
                           '" height="'+avatar_size+'" width="'+avatar_size+
                           '" alt="'+screen_name+'\'s avatar" title="'+screen_name+'\'s avatar" border="0"/></a>') : '');
            var time = '<span class="tweet_time"><a href="'+tweet_url+'" title="view tweet on twitter">'+tweet_relative_time+'</a></span>';
            var text = '<span class="tweet_text">'+$([tweet_text]).makeHeart().capAwesome().capEpic()[0]+ '</span>';

            return { item: item, // For advanced users who want to dig out other info
                     screen_name: screen_name,
                     user_url: user_url,
                     avatar_size: avatar_size,
                     avatar_url: avatar_url,
                     source: source,
                     tweet_url: tweet_url,
                     tweet_time: tweet_time,
                     tweet_relative_time: tweet_relative_time,
                     tweet_raw_text: tweet_raw_text,
                     tweet_text: tweet_text,
                     retweet: retweet,
                     retweeted_screen_name: retweeted_screen_name,
                     user: user,
                     join: join,
                     avatar: avatar,
                     time: time,
                     text: text
                   };
          });

          tweets = $.grep(tweets, s.filter).slice(0, s.count);
          list.append($.map(tweets.sort(s.comparator),
                            function(t) { return "<li>" + expand_template(t) + "</li>"; }).join('')).
              children('li:first').addClass('tweet_first').end().
              children('li:odd').addClass('tweet_even').end().
              children('li:even').addClass('tweet_odd');

          if (s.outro_text) list.after(outro);
          $(widget).trigger("loaded").trigger((tweets.length === 0 ? "empty" : "full"));
          if (s.refresh_interval) {
            window.setTimeout(function() { $(widget).trigger("load"); }, 1000 * s.refresh_interval);
          }
		  
		  // Trigger callback function
		  s.callback();
		  
        });
      }).trigger("load");
    });
  };
})(jQuery);