/**
* @author Theo van Oostrum theo@a2.nl
* @version 1.0
* @copyright A2 Automatisering B.V. 30-12-2008
*/
function validate(fields)
{
	var msgs = {};
	var valid = true;
	
	for ( field in fields)
	{
		if(fields[field] != undefined)
		{
			if( field.indexOf('[') != -1 )
			{
				fieldName = field.substring(field.lastIndexOf('[')+1, field.lastIndexOf(']'));
			}
			else
			{
				fieldName = field;
			}
			if ( ( msg = validateField(fieldName, fields[field]) ) !== true )
			{
				valid = false;
				msgs[field] = msg;
			}
		}	
	}
	
	if ( ! valid )
	{
		return msgs;
	}
	
	return true;
}

function validateField( key, value )
{
	var validator = validation[key];
	
	if ( value == "" || value == null )
	{
		if( validator['required'] == true )
		{
			return 'Dit is een verplicht veld';
		}
		else
		{
			return true;
		}
	}
	
	var max_length = validator['max_length'];
		
	if ( max_length != undefined && value.length > max_length )
	{
		return 'Veld mag niet langer dan ' + max_length + ' karakters zijn.';
	}
	
	if( validator['type'] == 'date' )
	{
		if  (value.length != 10)
		{
			return validator['msg'];
		} 
		
		var day = value.substring(0,2);
		var month = value.substring(3,5);
		var year = value.substring(6,10);
		
		var date = new Date(parseInt(year), parseInt(month)-1, parseInt(day));
		
		if( ! ( date.getDate() > 0 ) )
		{
			return validator['msg'];
		}	
	}
	else if (validator['type'] == 'int' )
	{
		var length = validator['length'];
		
		if ( length != undefined )
		{
			var pattern = '^[0-9]{'+length+'}$';
		}
		else
		{
			var pattern = '^[0-9]*$';
		}

		var result = value.match(pattern);
		
		if ( result == null || result[0] != value )
		{
			return validator['msg'];
		}
	}
	else if ( validator['type'] == 'string' )
	{
		//Een string mag bevatten: alle letters en cijfers, whitespaces en de karakters: ',' , '.' , '`', '-' en '&'.
		var pattern = "^[\\w\,\.\`\\'&\\-\\s]*?$";
			
		var result = value.match(pattern);
	
		if ( result == null || result[0] != value )
		{
			if ( validator['msg'] == undefined )
			{
				return 'Dit veld mag geen speciale karakters bevatten.'
			}
			return validator['msg'];
		}
	}
	else if (validator['type'] == 'email')
	{
		if( value.indexOf('@') == -1 || value.lastIndexOf('.') <= value.lastIndexOf('@') )
		{
			return validator['msg'];
		}
	}
	else if (validator['type'] == 'password')
	{
		//var pattern = '^[^;~><\/\\]*$';
		var pattern = '^[^;~\/\\\\]*$';
		
		var result = value.match(pattern);
		
		if ( result == null || result[0] != value )
		{
			return validator['msg'];
		}
	}	
	
	return true;
}





var validation = 
{
	'start' : 	{ 
					'type' : 'date',
					'required' : true,
					'msg' : 'Dit veld moet de vorm \'dd-mm-jjjj\' hebben.'
				},
	'eind' : 	{ 
					'type' : 'date',
					'required' : false,
					'msg' : 'Dit veld moet de vorm \'dd-mm-jjjj\' hebben.'
				},
	'soort_training' :	{ 
					'type' : 'string',
					'max_length' : 50,
					'required' : true
				},
	'naam_training' :	{ 
					'type' : 'string',
					'max_length' : 30,
					'required' : false
				},
	'merk' :	{ 
					'type' : 'string',
					'max_length' : 30,
					'required' : true
				},
	'andermerk' :	{ 
					'type' : 'string',
					'max_length' : 30,
					'required' : false
				},
	'distributeur' :	{ 
					'type' : 'string',
					'max_length' : 50,
					'required' : true
				},
	'trainer' :	{ 
					'type' : 'string',
					'max_length' : 50,
					'required' : true
				},
	'paspoort_nr' :	{ 
					'type' : 'int',
					'required' : true,
					'max_length' : 6,
					'msg' : 'Dit veld mag alleen uit cijfers bestaan.'
				},
	'cursist' :	{ 
					'type' : 'string',
					'max_length' : 50,
					'required' : true
				},	
	'naam_dep' :	{ 
					'type' : 'string',
					'max_length' : 30,
					'required' : true
				},
	'adres_dep' :	{ 
					'type' : 'string',
					'max_length' : 50,
					'required' : false
				},
	'plaats_dep' :	{ 
					'type' : 'string',
					'max_length' : 30,
					'required' : true
				},
	'name'		:	{ 
					'type' : 'email',
					'max_length' : 50,
					'required' : true,
					'msg' : 'Dit veld moet een geldig email adres zijn.'
				},
	'password'	:	{ 
					'type' : 'password',
					'max_length' : 30,
					'required' : true
				}			
}



/*
	Show error messages in the messageBox.
	
	@input msgs as Object: show list of error messages and highlight the input fields
	@input msgs as String: show only the error message ( not related to a specific input field )

*/


function showMsg(msg)
{
	var msgBox = document.getElementById('msgbox');
	msgBox.className = "";
		
	var msgSpan = msgBox.getElementsByTagName('span').item(0);
	
	var msgList = document.getElementById('msglist');
	
	//Remove all previous messages and input highlighting
	
	
	var links = msgList.getElementsByTagName('a');
	//links = Array.prototype.slice.call(links);
	links = toArray(links);

	
	//links = Array().slice.call(links);	
	
	for ( link in links )
	{
		var linkTo = links[link].getAttribute('href');
		linkTo = linkTo.substring(1);
		document.getElementById(linkTo).className = "";
	}

	msgList.innerHTML = "";
	
	if ( typeof (msg) == 'string' )
	{
		msgSpan.innerHTML = msg;
		msgList.className = "hidden";
		return false;
	}
	else if ( typeof (msg) == 'object' )
	{	
		msgList.className = "";

		msgCount = 0;
		
		//Create a list item for each error message, with a link to the highlighted (invalid) field.
		for ( msgField in msg )
		{
			msgCount++;
			
			var id = 'id_' + msgField;
			var element = document.getElementById(id);
			element.className = 'invalid';
				
			var label = document.getElementById('label_' + msgField).innerHTML;			
			if (label.indexOf('*') != -1 )
			{
				label = label.substring(0, label.length - 2);
			}
			if (label.indexOf('(') != -1 )
			{
				label = label.substring(0, label.indexOf('(') - 1);
			}
			
			msgItem = document.createElement('li');
			msgLink = document.createElement('a');
			msgLink.href = "#"+id;
			msgLink.innerHTML = label;
			
			msgText = document.createTextNode(" : " + msg[msgField]);
			
			msgItem.appendChild(msgLink);
			msgItem.appendChild(msgText);
			msgList.appendChild(msgItem);
		}
		
		if (msgCount == 1)
		{
			msgSpan.innerHTML = "Het volgende veld bevat fouten:";
		}
		else
		{
			msgSpan.innerHTML = "De volgende velden bevatten fouten:";
		}
	}
	
	//Go to top of screen
	window.scrollTo(0,0);
	
	return false;
}


function toArray(object)
{
	var ret = Array();
	for ( var i = 0, length = object.length; i < length; i++ )
	{	
		ret.push( object[ i ] );
	}
	return ret;
}	


function hideMsg()
{
	var msgBox = document.getElementById('msgbox');
	msgBox.className = "hidden";
}