/**
* @author: Joel Miller
* @date: 24/01/2008
* This Javascript file can be imported into webpages on the Brisbane Symphonic Band's website to provide dynamic content
*/

function BSBEvent (evDay, evDate, evMonth, evYear, evTime, evTitle, evLocation, evEnsemble)
/**
* Creates an Event Object
* evDay: Day of Event (Sunday, Monday, ...)
* evDate: Date (1,2,3...)
* evMonth: Month (January, February,...)
* evYear: Year (2008, 2009,...)
* evTime: Time (6:00pm)
* evTitle: The title of the event
* evLocation: The location of the event
* evEnsemble: The ensemble involved in the event
*/
{
 this.evDay = evDay; 
 this.evDate = evDate;
 this.evMonth = evMonth;
 this.evYear = evYear;
 this.evTime = evTime;
 this.evTitle = evTitle;
 this.evLocation = evLocation;
 this.evEnsemble = evEnsemble;
}

function BSBCreateArray ()
/**
* This function creates an array of BSB Events when it is called. The array is returned, once generated.
* ADD NEW EVENTS TO THIS SECTION. The order is !irrelevant!.
*/
{
var myArray = new Array();
myArray[0] = new BSBEvent('Wednesday','25', 'January','2012','6:00pm - 7:30pm','First BSB Swing Rehearsal for 2012','Trinity Wilston Uniting Church Hall','BSB Swing');
myArray[1] = new BSBEvent('Wednesday', '25', 'January', '2012', '7:30pm - 9:30pm','First BSB Rehearsal for 2012','Trinity Wilston Uniting Church Hall','Symphonic Band');
myArray[2] = new BSBEvent('Sunday', '19', 'February', '2012', '2:00pm - 3:00pm','Symphonic Swing','Newstead House<br><a href="http://www.brisbanesymphonicband.com/events-month.shtml">More Details...</a>', 'Symphonic Band');
myArray[3] = new BSBEvent('Sunday', '11', 'March', '2012', '2:00pm - 3:00pm','Local Talent','Roma Street Parklands Amphitheater', 'BSB Swing!');
myArray[4] = new BSBEvent('Saturday', '3', 'March', '2012', '7:00pm - 11:00pm','Come Out Swinging Against Cancer', 'Enoggera Bowls Club<br><a href="http://www.brisbanesymphonicband.com/events-sss.shtml">More Details...</a>', 'BSB Swing!');

//returns array
 return myArray;
 
}

function BSBGetEvents (eventArray, currMonth)
/**
* This function returns an array of indexes for events in a particular month
* eventArray: An array of BSB Events
* currMonth: An integer from 0 to 11 representing a month of the year
*/ 
{
  var x;
  var evIndexes = new Array ();

  for (x in eventArray)
  {
    if (eventArray[x].evMonth == toFullMonth(currMonth))
    {
	evIndexes.push(x);       
    }
  }
 
  return evIndexes;
}

function isEven(value)
/**
* A simple function to test if a number is odd or even
* value: An integer
*/
{
	if (value%2 == 0)
		return true;
	else
		return false;
}

function BSBWriteIndexEvents (eventArray)
/**
* This function writes the dynamic data to the Index Page
* eventArray: an Array of BSB Events
*/
{
	var d = new Date (); var currYear = d.getFullYear(); var currMonth = d.getMonth();
	var currDate = d.getDate(); 
	var upcomingEvents = new Array ();
	
    var currMonthEvents = BSBGetEvents (eventArray, currMonth);
	for (s in currMonthEvents)
	{
		if (eventArray[currMonthEvents[s]].evDate >= currDate)
									   {
										   upcomingEvents.push(currMonthEvents[s]);
									   }
	}

	//Get next month 
	var nextMonth = currMonth+1%11;	
	for (f=nextMonth;f<=11;f++)
	{
		var nextMonthEvents = BSBGetEvents (eventArray, f);		
		for (w in nextMonthEvents)
		{
			upcomingEvents.push(nextMonthEvents[w]);
		}
	}

	upcomingEvents.length=3;
	
	for (u=0;u<=2;u++)
	{
		if (eventArray[upcomingEvents[u]].evDay!=null)
		{
		document.write('<p><strong>' + eventArray[upcomingEvents[u]].evDay + ' ' + eventArray[upcomingEvents[u]].evDate + ' ' + eventArray[upcomingEvents[u]].evMonth + ' ' + eventArray[upcomingEvents[u]].evYear + '</strong><br />' + eventArray[upcomingEvents[u]].evTime + '<br />');
		document.write('<strong>' + eventArray[upcomingEvents[u]].evTitle + '</strong> <br />' + eventArray[upcomingEvents[u]].evLocation + '</p>');
		}
	}
	document.write('<p><a href="events-month.shtml">More events...</a></p>');
}

function BSBWriteYearEvents (eventArray)
/**
* This function writes the dynamic data to the Yearly Page
* eventArray: an Array of BSB Events
*/
{
	var trClass; var currMonth; var currYear;
	var i=0;
    document.write('<table class="calendar" width="485"  border="0">');
	for (i=0;i<=11;i++)
    {
      currMonth = toFullMonth(i);
	  var d = new Date (); var currYear = d.getFullYear();
	  if (isEven(i))
	  { trClass = "odd" }
	  else 
	  { trClass = "even" }
	
	 //output the heading... 
	 document.write('<tr class="' + trClass + '" align="left" valign="top">');
     document.write('<th colspan="5" scope="row"><h2><span class="style2">' + currMonth + '</span></h2></th>');
     document.write('</tr>');
    
	 //find all events for each month in this year!
	var g;
	for (g in eventArray)
    {
       if (eventArray[g].evMonth == currMonth && eventArray[g].evYear == currYear)
       {
		document.write('<tr class="' + trClass + '" align="left" valign="top">');
		document.write('<th width="15" scope="row">&nbsp;</th>');
		document.write('<th scope="row"><strong>' + eventArray[g].evDay + ' ' + formatDate(eventArray[g].evDate) + '</strong></th>');
		document.write('<td cellpadding="5">' + eventArray[g].evTime + ' &nbsp;&nbsp;&nbsp;&nbsp;</td>');
		document.write('<td colspan="2"><strong>' + eventArray[g].evTitle + '</strong>');
		document.write(', ' + eventArray[g].evLocation + '&nbsp;<br /><i>' + eventArray[g].evEnsemble + '</i></td>');
		document.write('</tr>'); 
       }
      }
	 }
	document.write('</table>'); 
}

function BSBWriteYearEventsPF (eventArray)
/**
* This function writes the dynamic data to the Yearly Page
* eventArray: an Array of BSB Events
*/
{
	var trClass; var currMonth; var currYear;
	var i=0;
    document.write('<table class="calendar" width="700"  border="0">');
	for (i=0;i<=11;i++)
    {
      currMonth = toFullMonth(i);
	  var d = new Date (); var currYear = d.getFullYear();
	  if (isEven(i))
	  { trClass = "odd" }
	  else 
	  { trClass = "even" }
	
	 //output the heading... 
	 document.write('<tr class="' + trClass + '" align="left" valign="top">');
     document.write('<th colspan="5" scope="row"><h2><span class="style2">' + currMonth + '</span></h2></th>');
     document.write('</tr>');
    
	 //find all events for each month in this year!
	var g;
	for (g in eventArray)
    {
       if (eventArray[g].evMonth == currMonth && eventArray[g].evYear == currYear)
       {
		document.write('<tr class="' + trClass + '" align="left" valign="top">');
		document.write('<th width="15" scope="row">&nbsp;</th>');
		document.write('<th scope="row"><strong>' + eventArray[g].evDay + ' ' + formatDate(eventArray[g].evDate) + '</strong></th>');
		document.write('<td cellpadding="5">' + eventArray[g].evTime + ' &nbsp;&nbsp;&nbsp;&nbsp;</td>');
		document.write('<td colspan="2"><strong>' + eventArray[g].evTitle + '</strong>');
		document.write(', ' + eventArray[g].evLocation + '&nbsp;<br /><i>' + eventArray[g].evEnsemble + '</i></td>');
		document.write('</tr>'); 
       }
      }
	 }
	document.write('</table>'); 
}


function formatDate (dateString)
/**
* This function appends the appropriate suffix to date numbers
* dateString: an integer (1,2,3...)
*/ 
{
	switch (dateString)
	{
		case "1":
		return "1st";
		break;
		case "2":
		return "2nd";
		break;
		case "3":
		return "3rd";
		break;
		case "21":
		return "21st";
		break;
		case "22":
		return "22nd";
		break;
		case "23":
		return "23rd";
		break;
		case "31":
		return "31st";
		break;
		default:
		return dateString + "th";
	}
}

function toFullMonth (num)
/**
* a simple function which converts an integer to the Month name
* num: an integer between 0 and 11
*/
{
 var month=new Array(12);
 month[0]="January";
 month[1]="February";
 month[2]="March";
 month[3]="April";
 month[4]="May";
 month[5]="June";
 month[6]="July";
 month[7]="August";
 month[8]="September";
 month[9]="October";
 month[10]="November";
 month[11]="December";

 return month[num];
}

function BSBWriteMonthlyEvents (eventArray)
/**
* This function writes dynamic content to the monthly page
* eventArray: an Array of BSB Events
*/
{
	
	var d = new Date (); var currMonth = d.getMonth();
	var BSBEventIndexes = BSBGetEvents (eventArray, currMonth);
	
	document.write("<h2>This Month's Events:</h2>");
	
	for (s in BSBEventIndexes)
	{
		document.write('<p><strong>' + eventArray[BSBEventIndexes[s]].evDay + ' ' + eventArray[BSBEventIndexes[s]].evDate + ' ' + eventArray[BSBEventIndexes[s]].evMonth + ' ' + eventArray[BSBEventIndexes[s]].evYear + '</strong><br />' + eventArray[BSBEventIndexes[s]].evTime + '<br />');
		document.write('<strong>' + eventArray[BSBEventIndexes[s]].evTitle + '</strong> <br />' + eventArray[BSBEventIndexes[s]].evLocation + '</p>');
	}
}

function sortArrayByDate (eventArray)
/**
* This function takes an unsorted array as input and returns a sorted array as ouput
* eventArray: an Array of BSB Events
*/
{
     var sortedArray = new Array (); var i = 0; var j = 0; var k = 0;
	 for (i=0;i<=11;i++)
	 {
		for (j=0;j<=31;j++)
		{
			for (k in eventArray)
			{
				if (eventArray[k].evDate == j && eventArray[k].evMonth == toFullMonth(i))
				{
					sortedArray.push(eventArray[k]);
				}
			}
		}
	 }
	 
	 return sortedArray;
}

function BSBMain (pageName)
/**
* Main: Application controller
* pageName: String - used to determine which page is calling the function
*/ 
{
 var BSBEventsRAW = BSBCreateArray ();
 var BSBEvents = sortArrayByDate (BSBEventsRAW); 
 switch (pageName)
 {
	 case "evYear":
	 BSBWriteYearEvents (BSBEvents);
	 break;
	 case "evYearPF":
	 BSBWriteYearEventsPF (BSBEvents);
	 break;
	 case "index":
	 BSBWriteIndexEvents (BSBEvents);
	 break;
	 case "monthly":
	 BSBWriteMonthlyEvents (BSBEvents);
	 break;
	 default:
	 alert ("Error found"); 
 }
}