/**
* @version: 1.0 Alpha-1
* @author: Coolite Inc. http://www.coolite.com/
* @date: 2008-04-13
* @copyright: Copyright (c) 2006-2008, Coolite Inc. (http://www.coolite.com/). All rights reserved.
* @license: Licensed under The MIT License. See license.txt and http://www.datejs.com/license/.
* @website: http://www.datejs.com/
*/

/*
* TimeSpan(milliseconds);
* TimeSpan(days, hours, minutes, seconds);
* TimeSpan(days, hours, minutes, seconds, milliseconds);
*/
var TimeSpan = function (days, hours, minutes, seconds, milliseconds) {
   var attrs = "days hours minutes seconds milliseconds".split(/\s+/);
   
   var gFn = function (attr) {
       return function () {
           return this[attr];
       };
   };
       
   var sFn = function (attr) {
       return function (val) {
           this[attr] = val;
           return this;
       };
   };
       
   for (var i = 0; i < attrs.length ; i++) {
       var $a = attrs[i], $b = $a.slice(0, 1).toUpperCase() + $a.slice(1);
       TimeSpan.prototype[$a] = 0;
       TimeSpan.prototype["get" + $b] = gFn($a);
       TimeSpan.prototype["set" + $b] = sFn($a);
   }

   if (arguments.length == 4) {
       this.setDays(days);
       this.setHours(hours);
       this.setMinutes(minutes);
       this.setSeconds(seconds);
   } else if (arguments.length == 5) {
       this.setDays(days);
       this.setHours(hours);
       this.setMinutes(minutes);
       this.setSeconds(seconds);
       this.setMilliseconds(milliseconds);
   } else if (arguments.length == 1 && typeof days == "number") {
       var orient = (days < 0) ? -1 : +1;
       this.setMilliseconds(Math.abs(days));
       
       this.setDays(Math.floor(this.getMilliseconds() / 86400000) * orient);
       this.setMilliseconds(this.getMilliseconds() % 86400000);

       this.setHours(Math.floor(this.getMilliseconds() / 3600000) * orient);
       this.setMilliseconds(this.getMilliseconds() % 3600000);

       this.setMinutes(Math.floor(this.getMilliseconds() / 60000) * orient);
       this.setMilliseconds(this.getMilliseconds() % 60000);

       this.setSeconds(Math.floor(this.getMilliseconds() / 1000) * orient);
       this.setMilliseconds(this.getMilliseconds() % 1000);

       this.setMilliseconds(this.getMilliseconds() * orient);
   }

   this.getTotalMilliseconds = function () {
       return (this.getDays() * 86400000) + (this.getHours() * 3600000) + (this.getMinutes() * 60000) + (this.getSeconds() * 1000);
   };
   
   this.compareTo = function (time) {
       var t1 = new Date(1970, 1, 1, this.getHours(), this.getMinutes(), this.getSeconds()), t2;
       if (time === null) {
           t2 = new Date(1970, 1, 1, 0, 0, 0);
       }
       else {
           t2 = new Date(1970, 1, 1, time.getHours(), time.getMinutes(), time.getSeconds());
       }
       return (t1 < t2) ? -1 : (t1 > t2) ? 1 : 0;
   };

   this.equals = function (time) {
       return (this.compareTo(time) === 0);
   };    

   this.add = function (time) {
       return (time === null) ? this : this.addSeconds(time.getTotalMilliseconds() / 1000);
   };

   this.subtract = function (time) {
       return (time === null) ? this : this.addSeconds(-time.getTotalMilliseconds() / 1000);
   };

   this.addDays = function (n) {
       return new TimeSpan(this.getTotalMilliseconds() + (n * 86400000));
   };

   this.addHours = function (n) {
       return new TimeSpan(this.getTotalMilliseconds() + (n * 3600000));
   };

   this.addMinutes = function (n) {
       return new TimeSpan(this.getTotalMilliseconds() + (n * 60000));
   };

   this.addSeconds = function (n) {
       return new TimeSpan(this.getTotalMilliseconds() + (n * 1000));
   };

   this.addMilliseconds = function (n) {
       return new TimeSpan(this.getTotalMilliseconds() + n);
   };

   this.get12HourHour = function () {
       return (this.getHours() > 12) ? this.getHours() - 12 : (this.getHours() === 0) ? 12 : this.getHours();
   };

   this.getDesignator = function () {
       return (this.getHours() < 12) ? Date.CultureInfo.amDesignator : Date.CultureInfo.pmDesignator;
   };

   this.toString = function (format) {
       this._toString = function () {
           if (this.getDays() !== null && this.getDays() > 0) {
               return this.getDays() + "." + this.getHours() + ":" + this.p(this.getMinutes()) + ":" + this.p(this.getSeconds());
           }
           else {
               return this.getHours() + ":" + this.p(this.getMinutes()) + ":" + this.p(this.getSeconds());
           }
       };
       
       this.p = function (s) {
           return (s.toString().length < 2) ? "0" + s : s;
       };
       
       var me = this;
       
       return format ? format.replace(/dd?|HH?|hh?|mm?|ss?|tt?/g,
       function (format) {
           switch (format) {
           case "d":  
               return me.getDays();
           case "dd":  
               return me.p(me.getDays());
           case "H":  
               return me.getHours();
           case "HH":  
               return me.p(me.getHours());
           case "h":  
               return me.get12HourHour();
           case "hh":  
               return me.p(me.get12HourHour());
           case "m":  
               return me.getMinutes();
           case "mm":  
               return me.p(me.getMinutes());
           case "s":  
               return me.getSeconds();
           case "ss":  
               return me.p(me.getSeconds());
           case "t":  
               return ((me.getHours() < 12) ? Date.CultureInfo.amDesignator : Date.CultureInfo.pmDesignator).substring(0, 1);
           case "tt":  
               return (me.getHours() < 12) ? Date.CultureInfo.amDesignator : Date.CultureInfo.pmDesignator;
           }
       }
       ) : this._toString();
   };
   return this;
};    

/**
* Gets the time of day for this date instances.
* @return {TimeSpan} TimeSpan
*/
Date.prototype.getTimeOfDay = function () {
   return new TimeSpan(0, this.getHours(), this.getMinutes(), this.getSeconds(), this.getMilliseconds());
};

/*
* TimePeriod(startDate, endDate);
* TimePeriod(years, months, days, hours, minutes, seconds, milliseconds);
*/
var TimePeriod = function (years, months, days, hours, minutes, seconds, milliseconds) {
   var attrs = "years months days hours minutes seconds milliseconds".split(/\s+/);
   
   var gFn = function (attr) {
       return function () {
           return this[attr];
       };
   };
       
   var sFn = function (attr) {
       return function (val) {
           this[attr] = val;
           return this;
       };
   };
       
   for (var i = 0; i < attrs.length ; i++) {
       var $a = attrs[i], $b = $a.slice(0, 1).toUpperCase() + $a.slice(1);
       TimePeriod.prototype[$a] = 0;
       TimePeriod.prototype["get" + $b] = gFn($a);
       TimePeriod.prototype["set" + $b] = sFn($a);
   }
   
   if (arguments.length == 7) {
       this.years = years;
       this.months = months;
       this.setDays(days);
       this.setHours(hours);
       this.setMinutes(minutes);
       this.setSeconds(seconds);
       this.setMilliseconds(milliseconds);
   } else if (arguments.length == 2 && arguments[0] instanceof Date && arguments[1] instanceof Date) {
       // startDate and endDate as arguments
   
       var d1 = years.clone();
       var d2 = months.clone();
   
       var temp = d1.clone();
       var orient = (d1 > d2) ? -1 : +1;
       
       this.years = d2.getFullYear() - d1.getFullYear();
       temp.addYears(this.years);
       
       if (orient == +1) {
           if (temp > d2) {
               if (this.years !== 0) {
                   this.years--;
               }
           }
       } else {
           if (temp < d2) {
               if (this.years !== 0) {
                   this.years++;
               }
           }
       }
       
       d1.addYears(this.years);


       if (orient == +1) {
           while (d1 < d2 && d1.clone().addDays(Date.getDaysInMonth(d1.getYear(), d1.getMonth()) ) < d2) {
               d1.addMonths(1);
               this.months++;
           }
       }
       else {
           while (d1 > d2 && d1.clone().addDays(-d1.getDaysInMonth()) > d2) {
               d1.addMonths(-1);
               this.months--;
           }
       }
       
       var diff = d2 - d1;

       if (diff !== 0) {
           var ts = new TimeSpan(diff);
           this.setDays(ts.getDays());
           this.setHours(ts.getHours());
           this.setMinutes(ts.getMinutes());
           this.setSeconds(ts.getSeconds());
           this.setMilliseconds(ts.getMilliseconds());
       }
   }
   return this;
};