/*
	Form Validation
	
	Method

   		// objForm - reference to form object
   		// 'formResultDiv' - div id to present the error mesages
   		// show_alert - shows error mesages in alert message instead of div mode
   		validateFormTemplate( objForm, divErrorId, show_alert )
	
	Attribute Description:

	validate =  "not_empty" 	- field cannot be empty. stips spaces before validation 
				"integer"   	- integer allowed
				"number" 		- decimal allowed
				"positive" 		- positive integer ou decimal value
				"email"     	- validates email syntax
				"phone_BR" 		- validate invalid phone numbers
				"phoneifen_BR"	- validate invalid phone numbers with format ((00)0000-0000)
				"phoneifen_BR_2"- validate invalid phone numbers with format (0000-0000)
				"name"			- string with 2 or more letters
				"name_surname"	- at least two names with 3 or more letters each 
				"date_PT"		- validate dates with portuguese format dd-mm-yyyy or dd/mm/yyyy
				"date_EN"		- validate dates with international format yyyy-mm-dd or yyyy-mm-dd
				"date_BR"		- validate dates with international format dd/mm/yyyy
				"url"  			- validate url address 
				"CPF"			- validate CPF format (000.000.000-00)
				"cep"			- validate cep format(00000-000)
				"cep1"			- validate cep1 format (00000) 			
				"cep2"			- validate cep2 format (000)  
				"motor"			- validate motor type format (0.0)
				"RG"			- validate RG format 00.000.000-0
				
	multiple attributs validation 
		validate="integer|positive"
		title="error message to show"
	
	
	return listener
		you can define a function with name formValidation_listener that is called on validation success
		
	
	Examples:
	
		<form onsubmit="return validateFormTemplate( this, 'formResultDiv', false );" method="post">
		
			Field with username validation:
			<input type="Text" id="username" name="username" validate="username" title="Please insert a valid username" />
		
			Field with multiple validation (not_empty and integer):
			<input type="Text" id="age" name="age" validate="not_empty|integer|positive" title="Age is mandatory and as to be a valid integer" />
			
		</form>

*/


	function validateFormTemplate( objForm, divErrorId, show_alert ) {
		
		for( var i=0; i< objForm.elements.length; ++i ){
			
			var elem = objForm.elements[i];
			
			if( !elem.id || elem.length == 0 || !elem.getAttribute("validate") || elem.getAttribute("validate").length == 0 ) continue;
			
			var elemType			= elem.type;
			var elemValue 			= formValidation_getFieldValue( objForm, elem, elemType );
			var validationType 		= elem.getAttribute("validate");
			var errorMessage 		= elem.getAttribute("title");
			var arrValidationTypes 	= validationType.split("|");
			
			for (var j=0; j < arrValidationTypes.length; j++) {
				
				var blnValid = true;

				switch( arrValidationTypes[j] ){
				
					case "not_empty":
						if( elemType == "select-one" && elemValue == 0 ) blnValid = false;
						else{
							if( elemType == "checkbox" && !elem.checked ) blnValid = false;
							else{
								if( elemType != "select-one" && formValidation_allTrim(elemValue) == "" ) blnValid = false;
							}
						}
					break;

					case "integer":
						if( elemValue != "" ){
							var filter = /^-?\d+$/;						
							if( ! filter.test( elemValue ) ) blnValid = false;
						}
					break;

					case "number":
						if( elemValue != "" ){
							var filter = /^[-+]?\d+(\.\d+)?$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
						}
					break;
					
					case "positive":
						if( elemValue != "" ){
							var filter = /^\d+$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
						}
					break;

					case "email":
						if( elemValue != "" ){
							//var filter = /^([^\.]+[a-zA-Z0-9_\.\-]+[^\.])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
							//var filter = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})$/;
							//var filter = /^[a-zA-Z][\w\.-^]*[a-zA-Z0-9\^._-]@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})$/;
							var filter = /^[a-zA-Z_\.\-][\w_\.\-]*[a-zA-Z0-9\^._-]@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
						}
					break;
					
					case "phone_BR":
					
						if( elemValue != "" ){
							var filter = /^[0-9]{8}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( blnValid ){
								if( elemValue.charAt(0) == 0 || elemValue.charAt(0) == 1 ) blnValid = false;
								if( blnValid ){
							if( formValidation_isInvalidPhoneNumbers( elemValue ) ) blnValid = false;
								}
							}
							
						}
					break;
					
					case "phoneifen_BR":					
						if( elemValue != "" ){
							var filter = /\(?[1-9]{2}\)?\d{4}-\d{4}$/;
							if( ! filter.test( elemValue ) ) blnValid = false; 
							if( blnValid ){
								if( elemValue.charAt(4) == 0 || elemValue.charAt(4) == 1 ) blnValid = false;
								if( blnValid ){
								elemValue = elemValue.substring(4);
								elemValue = elemValue.replace("-","");
								if( formValidation_isInvalidPhoneNumbers( elemValue ) ) blnValid = false;
								}
							}
							
						}
					break;
					
					case "phoneifen_BR_2":					
						if( elemValue != "" ){
							var filter = /\d{4}-\d{4}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( blnValid ){
								if( elemValue.charAt(0) == 0 || elemValue.charAt(0) == 1 ) blnValid = false;
								if( blnValid ){
									elemValue = elemValue.replace("-","");
									if( formValidation_isInvalidPhoneNumbers( elemValue ) ) blnValid = false;
								}
							}
						}
					break;
					
					case "phoneifenrequired_BR":					
						if( elemValue != "" ){
							var filter = /\(?\d{2}\)?\d{4}-\d{4}/;
							if (elemValue == "(00)0000-0000") blnValid = false;
							if( ! filter.test( elemValue ) ) blnValid = false;


						}
					break;

					case "name":
						
						if( elemValue != "" ){
							var filter = /^[A-Za-z âîôáéíóúàèìòùÂÎÔÁÉÍÓÚÀÈÌÒÙÇçüöäÃÕÑãõñ']{2,120}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
								if( blnValid ){
								if( formValidation_isInvalidName( elemValue ) ) blnValid = false;
								}
						}
					break;
					
					case "name_surname":
						if( elemValue != "" ){
							var names = elemValue.split(' ');
							if( names.length <= 1 ) blnValid = false;
							else{
								for( var k=0; k< names.length; ++k ){
									var filter = /^[A-Za-z âîôáéíóúàèìòùÂÎÔÁÉÍÓÚÀÈÌÒÙÇçüöäÃÕÑãõñ']{2,200}$/;
									if( ! filter.test( names[k] ) ){ 
										blnValid = false;
										break;
									}
								}
								if( blnValid ){
								if( formValidation_isInvalidName( elemValue ) ) blnValid = false;
								}
							}
						}
					break;

					case "date_PT":
						if( elemValue != "" )
							blnValid = formValidation_validateDate( elemValue, 'PT' );
					break;
					
					case "date_BR":
						if( elemValue != "" )
							blnValid = formValidation_validateDate( elemValue, 'BR' );
					break;
					
					case "date_EN":
						if( elemValue != "" )
							blnValid = formValidation_validateDate( elemValue, 'EN' );
					break;
					
					case "url":
						if( elemValue != "" ){
							var filter = /(ftp|http|https):\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_%&\?\/.=]+$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							
						}
					break;
					
					case "CPF":
						if( elemValue != "" ){		
							var filter = /^[0-9]{3}[.]{1}[0-9]{3}[.]{1}[0-9]{3}[-]{1}[0-9]{2}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							intCPF = replaceAll( elemValue, [[".", ""], [ "-", "" ]]);
							if( !formValidation_isValidCPF( intCPF ) ) blnValid = false;
						}
					break;

					case "RG":
						if( elemValue != "" ){		
							var filter = /^[0-9]{2}[.]{1}[0-9]{3}[.]{1}[0-9]{3}[-]{1}[0-9]{1}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( formValidation_isInvalidRG( elemValue ) ) blnValid = false;
						}
					break;
					
					case "cep":
						if( elemValue != "" ){		
							var filter = /^[0-9]{5}[-]{1}[0-9]{3}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( formValidation_isInvalidCep( elemValue ) ) blnValid = false;
						}
					break;
					
					case  "cep1":
						if( elemValue != "" ){
							var filter = /^[0-9]{5}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( formValidation_isInvalidCep1( elemValue ) ) blnValid = false;
						}
					break;
					
					case "cep2":
						if( elemValue != "" ){
							var filter = /^[0-9]{3}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
							if( formValidation_isInvalidCep2( elemValue ) ) blnValid = false;
						}
					break;
					
					case "motor":
						if( elemValue != "" ){
							var filter = /^[0-9]{1}[.]{1}[0-9]{1}$/;
							if( ! filter.test( elemValue ) ) blnValid = false;
						}
					break;
					
					default:
						try{
							blnValid = eval(arrValidationTypes[j])( elemValue );
						}
						catch( err ){
							alert( "ERRO FORM_TEMPLATE: função "+ arrValidationTypes[j] +"não definida." );
							blnValid = true;
						}
					break;
				}
				
				if( !show_alert ){
					if( blnValid == false ){
						document.getElementById(divErrorId).innerHTML = errorMessage;   
						//elem.style.backgroundColor = "#cccccc";
						if( elemType != "hidden" && elem.style.display != "none" && elem.style.visibility != "hidden" ) elem.focus();
						return false;
					}
					else{
						document.getElementById(divErrorId).innerHTML = "";
						//elem.style.backgroundColor = "#FFFFFF";
					}
				}
				else{
					if( blnValid == false ){
						alert( errorMessage );
						if( elemType != "hidden" && elem.style.display != "none" && elem.style.visibility != "hidden" ) elem.focus();
						return false;
					}
				}
			}
		}
		
		// verifies if listener is defined and calls it.
        var listener_defined = false;
		if(typeof formValidation_listener == 'function') listener_defined = true;
		if( listener_defined ) formValidation_listener();
		
		return true;
	}
	
	function formValidation_getFieldValue( formObj, elem, elemType ){
		
		switch( elemType ){
			case "text": 
				return elem.value;
			break;
			case "select":
				return elem.selectedIndex;
			break;
			case "select-one": 
				return elem.selectedIndex;
			break;
			case "radio":
				var radioObj = formObj.elements[ elem.name ];
				return formValidation_getCheckedRadio( radioObj )
			break;
			default: 
				return elem.value;
			break;
		}
		return "";
	}
	
	function formValidation_getCheckedRadio( radioObj ){
		if(!radioObj)
			return "";
		var radioLength = radioObj.length;
		if(radioLength == undefined){
			if(radioObj.checked)
				return radioObj.value;
			else
				return "";
		}
		for(var i = 0; i < radioLength; i++) {
			if(radioObj[i].checked) {
				return radioObj[i].value;
			}
		}
		return "";
	}
	
	function formValidation_allTrim(cValue){
		var lDone=false;

		while (lDone==false){
			if (cValue.length==0) {return cValue;}
			if (cValue.indexOf(' ')==0){cValue=cValue.substring(1);lDone=false; continue;}
			else {lDone=true;}
			if (cValue.lastIndexOf(' ')==cValue.length-1){cValue=cValue.substring(0, cValue.length-1);lDone=false;continue;}
			else {lDone=true;}
		}
		return cValue;
	}

	// returns true if recived phone is in invalid phones list
	function formValidation_isInvalidPhoneNumbers( phone ){		
		var invalidPhones = ['00000000','11111111','22222222','33333333','44444444','55555555','66666666','77777777','88888888','99999999','12345678'];
		for( var i=0; i < invalidPhones.length; ++i ){
			if( phone == invalidPhones[i] ) return true;
		}
		return false;
	}
	
	// returns true if recived cpf is in invalid cpf list
	/*function formValidation_isInvalidCPF( cpf ){		
		var invalidCPF = ['000.000.000-00','111.111.111-11','222.222.222-22','333.333.333-33','444.444.444-44','555.555.555-55','666.666.666-66','777.777.777-77','888.888.888-88','999.999.999-99'];
		for( var i=0; i < invalidCPF.length; ++i ){
			if( cpf == invalidCPF[i] ) return true;
		}
		return false;
	}*/
	
	 function formValidation_isValidCPF (CPF) {
		if (CPF.length != 11 || CPF == "00000000000" || CPF == "11111111111" ||
		CPF == "22222222222" ||	CPF == "33333333333" || CPF == "44444444444" ||
		CPF == "55555555555" || CPF == "66666666666" || CPF == "77777777777" ||
		CPF == "88888888888" || CPF == "99999999999")
		return false;
		soma = 0;
		for (i=0; i < 9; i ++)
			soma += parseInt(CPF.charAt(i)) * (10 - i);
		resto = 11 - (soma % 11);
		if (resto == 10 || resto == 11)
			resto = 0;
		if (resto != parseInt(CPF.charAt(9)))
			return false;
		soma = 0;
		for (i = 0; i < 10; i ++)
			soma += parseInt(CPF.charAt(i)) * (11 - i);
		resto = 11 - (soma % 11);
		if (resto == 10 || resto == 11)
			resto = 0;
		if (resto != parseInt(CPF.charAt(10)))
			return false;
		return true;
	 }
	 
	 function replaceAll( str, replacements ) {
		for ( i = 0; i < replacements.length; i++ ) {
			var idx = str.indexOf( replacements[i][0] );
	
			while ( idx > -1 ) {
				str = str.replace( replacements[i][0], replacements[i][1] );
				idx = str.indexOf( replacements[i][0] );
			}
	
		}

		return str;
	}
	
	// returns true if received param_name is in invalid Name list
	function formValidation_isInvalidName( param_name ){		
		var invalidName = ['aaa','bbb','ccc','ddd','eee','fff','ggg','hhh','iii','jjj','kkk','lll','mmm','nnn','ooo','ppp','qqq','rrr','sss','ttt','uuu','vvv','www','xxx','yyy','zzz'];
		for( var i=0; i < invalidName.length; ++i ){
			if( param_name.indexOf(invalidName[i]) > -1 ) return true;
		}
		return false;
	}

	// returns true if recived rg is in invalid rg list
	function formValidation_isInvalidRG( rg ){		
		var invalidRG = ['00.000.000-0','11.111.111-1','22.222.222-2','33.333.333-3','44.444.444-4','55.555.555-5','66.666.666-6','77.777.777-7','88.888.888-8','99.999.999-9'];
		for( var i=0; i < invalidRG.length; ++i ){
			if( rg == invalidRG[i] ) return true;
		}
		return false;
	}
	
	function formValidation_isInvalidCep( cep ){		
		var invalidCep = ['00000-000','11111-111','22222-222','33333-333','44444-444','55555-555','66666-666','77777-777','88888-888','99999-999'];
		for( var i=0; i < invalidCep.length; ++i ){
			if( cep == invalidCep[i] ) return true;
		}
		return false;
	}
	// returns true if recived cep1 is in invalid cep1 list
	function formValidation_isInvalidCep1( cep1 ){		
		var invalidCep1 = ['11111','22222','33333','44444','55555','66666','77777','88888','99999','12345'];
		for( var i=0; i < invalidCep1.length; ++i ){
			if( cep1 == invalidCep1[i] ) return true;
		}
		return false;
	}
	
	// returns true if recived cep1 is in invalid cep1 list
	function formValidation_isInvalidCep2( cep2 ){		
		var invalidCep2 = ['111','222','333','444','555','666','777','888','999','123'];
		for( var i=0; i < invalidCep2.length; ++i ){
			if( cep2 == invalidCep2[i] ) return true;
		}
		return false;
	}
	
	
	// valid date types => dd/mm/YYYY dd-mm-YYYY
	function formValidation_validateDate( strValue, format ) {
		if( format == 'EN' ){
			var objRegExp = /^\d{4}(\-|\/|\.)\d{2}\1\d{2}$/
			if( !objRegExp.test(strValue) )
				return false;
				
			var strSeparator = strValue.substring(4,5);
			var arrayDate = strValue.split(strSeparator);
			return formValidation_validateDateDays( arrayDate[2], arrayDate[1], arrayDate[0] );
		}
		if( format == 'PT' ){
			var objRegExp = /^\d{2}(\-|\/|)\d{2}\1\d{4}$/
			 
			//check to see if in correct format
			if(!objRegExp.test(strValue))
				return false; //doesn't match pattern, bad date
			
			var strSeparator = strValue.substring(2,3);
			var arrayDate = strValue.split(strSeparator);
			return formValidation_validateDateDays( arrayDate[0], arrayDate[1], arrayDate[2] );
		}
		if( format == 'BR' ){
			var objRegExp = /^\d{2}(\/|)\d{2}\1\d{4}$/
			 
			//check to see if in correct format
			if(!objRegExp.test(strValue))
				return false; //doesn't match pattern, bad date
			
			var strSeparator = strValue.substring(2,3);
			var arrayDate = strValue.split(strSeparator);
			return formValidation_validateDateDays( arrayDate[0], arrayDate[1], arrayDate[2] );
		}		
		return false; //any other values, bad date
	}
	
	
	function formValidation_validateDateDays( day_val, month_val, year_val ){
		
		//create a lookup for months not equal to Feb.
		var arrayLookup = { '01' : 31,'03' : 31, 
							'04' : 30,'05' : 31,
							'06' : 30,'07' : 31,
							'08' : 31,'09' : 30,
							'10' : 31,'11' : 30,
							'12' : 31 }
							
		var intDay = parseInt( day_val, 10 ); 
			
		//check if month value and day value agree
		if(arrayLookup[month_val] != null) {
		  if(intDay <= arrayLookup[month_val] && intDay != 0)
			return true; //found in lookup table, good date
		}
			
		// verify biss year
		var intMonth = parseInt(month_val,10);
		if (intMonth == 2) { 
			var intYear = parseInt(year_val);
		 	if (intDay > 0 && intDay < 29) {
				return true;
			}
			else if (intDay == 29) {
				 if ((intYear % 4 == 0) && (intYear % 100 != 0) || (intYear % 400 == 0)) {
					// year div by 4 and ((not div by 100) or div by 400) ->ok
				 	return true;
				 }   
			}
		}
		return false;
	}