/* by john resig
* from the blog post: http://ejohn.org/blog/simple-javascript-inheritance/
*/ 

// Inspired by base2 and Prototype
(function(){
  var initializing = false, fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;

  // The base Class implementation (does nothing)
  this.Class = function(){};
 
  // Create a new Class that inherits from this class
  Class.extend = function(prop) {
    var _super = this.prototype;
   
    // Instantiate a base class (but only create the instance,
    // don't run the init constructor)
    initializing = true;
    var prototype = new this();
    initializing = false;
   
    // Copy the properties over onto the new prototype
    for (var name in prop) {
      // Check if we're overwriting an existing function
      prototype[name] = typeof prop[name] == "function" &&
        typeof _super[name] == "function" && fnTest.test(prop[name]) ?
        (function(name, fn){
          return function() {
            var tmp = this._super;
           
            // Add a new ._super() method that is the same method
            // but on the super-class
            this._super = _super[name];
           
            // The method only need to be bound temporarily, so we
            // remove it when we're done executing
            var ret = fn.apply(this, arguments);       
            this._super = tmp;
           
            return ret;
          };
        })(name, prop[name]) :
        prop[name];
    }
   
    // The dummy class constructor
    function Class() {
      // All construction is actually done in the init method
      if ( !initializing && this.init )
        this.init.apply(this, arguments);
    }
   
    // Populate our constructed prototype object
    Class.prototype = prototype;
   
    // Enforce the constructor to be what we expect
    Class.constructor = Class;

    // And make this class extendable
    Class.extend = arguments.callee;
   
    return Class;
  };
})();

(function() {
  var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec']
  var dateParse = /([0-9]{4})-([0-9]{1,2})-([0-9]{1,2}) ([0-9]{2}):([0-9]{2}):([0-9]{2})/ig;
  
  this.ConversationDate = function(theDate) {
    var tmp = dateParse.exec(theDate);
    if( tmp === null ) {
      tmp = dateParse.exec(theDate);
    }
    
    if( tmp !== null ) {
      var lastUpdate = '';
      
      var hours = parseInt(tmp[4], 10);
      var min = parseInt(tmp[5], 10);
      if( min < 10 ) {
        min = '0'+ min;
      }
      
      var apm = 'am';
      if( hours >= 12 ) {
        if( hours > 12 ) {
          hours = hours - 12;
        }
        apm = 'pm';
      }
      
      if( hours === 0 ) {
        hours = 12;
      }
      
      //set the time
      lastUpdate += hours +':'+ min +' '+ apm;
      //lastUpdate += hours >= 12 ? ( (hours - 12) +':'+ tmp[5] +' pm' ) : ( hours == 0 ? ('12:'+ tmp[5] +' am') : (hours +':'+ tmp[5] +' am') );
      lastUpdate += ' - ';
      //set the date
      var month = parseInt(tmp[2], 10) - 1;
      lastUpdate += months[month] +' '+ parseInt(tmp[3], 10) +', '+ tmp[1];
    } else {
      lastUpdate = theDate;
    }
    return lastUpdate;
  };
  
  this.HTMLEncode = function(str) {
    var div = document.createElement('div');
    var text = document.createTextNode(str);
    div.appendChild(text);
    return div.innerHTML;
  };
  
})();