/* 
 * Company : Holidayzone Pty Ltd Melbourne Australia
 * Created on :14/12/2009   11:44:54 AM
  
 */

// this function will process the errors
// the function will split the output and then add that to error div
function process_error(output)
{
    var error_array=output.split(',');
    var error_details="";
    var temp_array;

    for(var i=0; i<error_array.length; i++)
        {
            // each element of an array will be in fieldname:error format

            temp_array=error_array[i].split(':');

            if(temp_array.length>1)
                {
                    var field_id=temp_array[0];
                    var error=temp_array[1];
//                    if(error!="")
//                    {
//                        error_details=error_details+error+"\n";
//                    }
                    document.getElementById("error_"+field_id).innerHTML=error;
                    document.getElementById("error_"+field_id).style.display="block";
                    document.getElementById(field_id).className="ui-state-error";
                }
                else
                    {
                      if(temp_array[0]!="")
                       {
                            error_details=error_details+temp_array[0]+"\n";
                       }
                }
        }
        if(error_details!="")
            {
                alert(error_details);
            }
}

/* This function will validate date
 * The function will return true if the date is valid or else it will return false.
 *
 **/
function validate_date(date)
{
     var valid=true;
    var date_array=date.split("-");
    var month=trim(date_array[1]);
    var day=parseFloat(date_array[2]);
    var year=trim(date_array[0]);

    switch(month)
    {
        case '01': if(day>31)
                {
                    valid=false;
                }
                break;
       case '02': if(checkleapyear(year) && day>29)
                {
                    valid=false;
                }
                if(!checkleapyear(year) && day>28)
                    {
                        valid=false;
                    }
                break;
       case '03': if(day>31)
                {
                    valid=false;
                }
                break;
       case '04': if(day>30)
                {
                    valid=false;
                }
                break;
       case '05': if(day>31)
                {
                    valid=false;
                }
                break;
       case '06': if(day>30)
                {
                    valid=false;
                }
                break;
       case '07': if(day>31)
                {
                    valid=false;
                }
                break;
       case '08': if(day>31)
                {
                    valid=false;
                }
                break;
      case '09': if(day>30)
                {
                    valid=false;
                }
                break;
      case '10': if(day>31)
                {
                    valid=false;
                }
                break;
      case '11': if(day>30)
                {
                    valid=false;
                }
                break;
       case '12': if(day>31)
                {
                    valid=false;
                }
                break;
    }
  //  alert(valid);
    return valid;
}
/* This function will check leap year
 * This function takes year
 * if the year is leap year then it will return true or else it will return false
 **/
function checkleapyear(year)
{
       year = parseInt(year);
        if(year%4 == 0)
        {
                if(year%100 != 0)
                {
                        return true;
                }
                else
                {
                        if(year%400 == 0)
                                return true;
                        else
                                return false;
                }
        }
return false;
}

/* This function will validate checkin date
 * If the date is in past then this function will return false else this function will return true.
 * */
function check_checkin_date(checkin_date)
{

     checkin_date=checkin_date.replace(/-/gi, '/');


    var checkin_date1=new Date(checkin_date);
    // get the today's date'
    var today=new Date(); // the function will return date in date/time format example Wed Feb 17 2010 16:28:52 GMT+1100 (AUS Eastern Daylight Time)
    // we need date in yyyy/mm/dd format
    var current_year=today.getFullYear(); // get the current year
     var current_month=today.getMonth(); // get the current month
     var current_date=today.getDate(); // get the current date
     // increment month because in javascript month starts from 0 i.e 0 for january.
    current_month++; // increment month
    var today_string=current_year+"/"+current_month+"/"+current_date; // build the date string
    today=new Date(today_string); // get the date in required format yyyy/mm/dd
    // Convert both dates to milliseconds
    var checkin_ms = checkin_date1.getTime();

    var today_ms = today.getTime();

    if(today_ms>checkin_ms)
        {
            return false;
        }
        else
            {
                return true;
            }
}

 /*This function will update checkout date in hidden field if it is selected from the dropdown list
  * ********************************** ARGUMENT DESCRIPTION ***************************************
  *  checkout_day_field : Id of the checkout day dropdown list
  *  checkout_month_field: Id of the checkout_month_year field
  *  checkout_hidden_field: Id of the checkout hidden field where the actual date will be stored
  *  checkin_field: Id of the checkin field where the actual checkin date will be stored
  *  nights_field: Id of the span where number of nights will be displayed.
  **/
function set_checkout_date(checkout_day_field,checkout_month_field,checkout_hidden_field,checkin_hidden_field,nights_field){
    // clear all fields
    document.getElementById(checkout_day_field).className="autowidth";
    document.getElementById(checkout_month_field).className="autowidth";
    // clear all divs
    document.getElementById("error_"+checkout_day_field).style.display="none";
    document.getElementById("error_"+checkout_month_field).style.display="none";

    var checkout_day=document.getElementById(checkout_day_field).value;
    var checkout_month_year=document.getElementById(checkout_month_field).value;
    // build the date string
    var checkout_date=checkout_month_year+"-"+checkout_day;
     document.getElementById(checkout_hidden_field).value=checkout_date;
   if(validate_date(checkout_date))
   {

            var checkin_date=document.getElementById(checkin_hidden_field).value;
        // validate date
            if(check_dates(checkin_date,checkout_date))
            {
                // if the date is valide then calculate number of nights
                var nights=days_between(checkin_date,checkout_date);
                 
                                    document.getElementById(nights_field).innerHTML=nights;
                              
            }
            else
                {
                    process_error(checkout_month_field+":Checkout date must be after checkin date.,"+checkout_day_field+":");
                }
   }
   else
       {
            process_error(checkout_month_field+":Invalid date.,"+checkout_day_field+":");
       }
}
/*This function will update calendar
 *It takes field id.Example '#checkout',day_field,date in 'yyyy-mm-dd' format and the id of nights_field.*/
function update_calendar(field_id,day_field,date,nights_field)
{
   field_id="#"+field_id;
   date=date.replace(/-/gi, '/');
    var checkin_date=new Date(date);
    checkin_date.setDate(checkin_date.getDate()+1);
    $(field_id).datepicker('setDate',checkin_date);
    var day=checkin_date.getDate();
    day--;
    document.getElementById(nights_field).innerHTML=1;
    document.getElementById(day_field).options.selectedIndex=day;

}

/* This function will update checkin date in hidden field if it is selected from the dropdown list
 * ********************************** ARGUMENT DESCRIPTION ***************************************
  *  checkin_day_field : Id of the checkin day dropdown list
  *  checkin_month_field: Id of the checkin_month_year field
  *  checkin_hidden_field: Id of the checkin hidden field where the actual date will be stored
  *  checkout_hidden_field:Id of the checkout hidden field where the actual checkout date will be stored
  *  nights_field: Id of the span where the number of nights will be displayed.
  *  checkout_day_field: ID of the checkout day field.
  *  checkout_month_year_field: ID of the checkout month and year field
 * */
function set_checkin_date(checkin_day_field,checkin_month_field,checkin_hidden_field,checkout_hidden_field,nights_field,checkout_day_field,checkout_month_field)
{
    // clear all fields
    document.getElementById(checkin_day_field).className="autowidth";
    document.getElementById(checkin_month_field).className="autowidth";
    document.getElementById(checkout_day_field).className="autowidth";
    document.getElementById(checkout_month_field).className="autowidth";
    // clear all divs
    document.getElementById("error_"+checkin_day_field).style.display="none";
    document.getElementById("error_"+checkin_month_field).style.display="none";
     document.getElementById("error_"+checkout_day_field).style.display="none";
    document.getElementById("error_"+checkout_month_field).style.display="none";

    var checkin_day=document.getElementById(checkin_day_field).value;
    var checkin_month_year=document.getElementById(checkin_month_field).value;
    // build the date string
    var checkin_date=checkin_month_year+"-"+checkin_day;
  //  alert(checkin_date);
     document.getElementById(checkin_hidden_field).value=checkin_date;
   if(validate_date(checkin_date))
       {
//                // call update_calendar function to update checkout calendar.
                                update_calendar(checkout_hidden_field,checkout_day_field,checkin_date,nights_field);
                var checkout_date=document.getElementById(checkout_hidden_field).value;
            // validate checkin date
                if(!check_checkin_date(checkin_date))
                    {
                            process_error(checkin_month_field+":Checkin date cannot be in past.,"+checkin_day_field+":");

                    }
//                     else
//                     {
//
//                            if(check_dates(checkin_date,checkout_date))
//                            {
//                               // var nights=days_between(checkin_date,checkout_date);
//
//                                 //       document.getElementById(nights_field).innerHTML=nights;
//
//                            }
//
//                     }
       }
       else
           {

               process_error(checkin_month_field+":Invalid date.,"+checkin_day_field+":");
           }

}
/* This function will validate checkin and checkout dates.
* If the checkout date is greater than checkin date then the function will return true else function will return false.
 */
function check_dates(checkin_date,checkout_date)
{
     // convert javascript format i.e. YYYY/MM/DD so replace '-' with '/'

    checkin_date=checkin_date.replace(/-/gi, '/');
    checkout_date=checkout_date.replace(/-/gi, '/');

    var checkin_date1=new Date(checkin_date);
    var checkout_date1=new Date(checkout_date);

    // Convert both dates to milliseconds
    var checkin_ms = checkin_date1.getTime();
    var checkout_ms = checkout_date1.getTime();
    if(checkout_ms>checkin_ms)
        {
            return true;
        }
        else
            {
                return false;
            }

}
/* This function will calculate difference between two dates and return number of nights between two dates.
 * The function takes checkin and checkout dates
 **/
function days_between(date1, date2) {

    // The number of milliseconds in one day
    var ONE_DAY = 1000 * 60 * 60 * 24;

    // convert javascript format i.e. YYYY/MM/DD so replace '-' with '/'

    date1=date1.replace(/-/gi, '/');
    date2=date2.replace(/-/gi, '/');

    var date3=new Date(date1);
    var date4=new Date(date2);

    // Convert both dates to milliseconds
    var date1_ms = date3.getTime();
    var date2_ms = date4.getTime();

    // Calculate the difference in milliseconds
    var difference_ms = Math.abs(date1_ms - date2_ms);

    // Convert back to days and return
    return Math.round(difference_ms/ONE_DAY);

}

/*This function will remove extra space from the string. It takes string as an argument.*/
function trim(str){
	return str.replace(/^\s+|\s+$/g, '') ;
}
/**
 * Convert string into number and anything that is not belong to the number will be set to 0
 * @param <String> str
 * @return <float>
 */
function cast_to_number(str){
    if(str == null || trim(str) == "" || isNaN(str))
       {
        return 0;
       }
    else
        {
          return parseFloat(str);
        }
}
/*This function will display room image in big window on mouse over.
 ***************** ARGUMENT DESCRIPTION **************************
 *image_id:Unique image id.
 *obj:
 */
function display_image(image_id,obj,floor_plan)
{
    var image_path=document.getElementById("image_path").value; // set the property image path
    var hotel=document.getElementById("hotel").value;
   var screen_hight=screen.height; // get the screen height.
    var screen_width=screen.width;// get the screen width.
    var vertical_center=screen_hight/2;  // get the screen vertical center point.
    var horizontal_center=screen_width/2; // get the screen horizontal center point.
    var start_left=horizontal_center-250;
    var top_position=top_pos(obj)-350; // get the top position.
    var left_position=left_pos(obj)// get the left position
    if(left_position<start_left)
        {
            left_position=left_position+(start_left-left_position);
        }
        if(left_position>start_left)
        {
            left_position=left_position-(left_position-start_left);
        }
    var image_description=document.getElementById("description_"+image_id).value;
    var image_name=image_path+hotel+"_"+image_id+".jpg";
    if(floor_plan)
        {
            image_name=image_path+hotel+"_floor_plan.jpg";
        }
    var image="<img src='"+image_name+"' alt='"+image_description+"' /><br/>"+image_description; // set the image
    document.getElementById("image_popup").innerHTML=image;
    // set the style information
    document.getElementById("image_popup").style.display='block';
    document.getElementById("image_popup").style.left=left_position+"px";
  document.getElementById("image_popup").style.top=top_position+"px";
   
   

}
/*This function will hide the room image */
function hide_image()
{
      document.getElementById("image_popup").style.display='none';
}
function top_pos(objName)
{
  //var obj = eval("document.formm." + objName);
  var objTop=0,tempObj=objName;
  while(tempObj.offsetParent){
    objTop+=tempObj.offsetTop;
    tempObj=tempObj.offsetParent
  }
  //alert(objTop); // This returns 2 - when I expect it to return a larger number
  //alert(objName.value);
  return objTop;
}
function left_pos(objName)
{
  //var obj = eval("document.formm." + objName);
  var objLeft=0,tempObj=objName;
  while(tempObj.offsetParent){
    objLeft+=tempObj.offsetLeft;
    tempObj=tempObj.offsetParent
  }
  //alert(objTop); // This returns 2 - when I expect it to return a larger number
  //alert(objName.value);
  return objLeft;
}