// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}
function trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
    var bracket=3
    strPhone=trim(strPhone)
    if(strPhone.indexOf("+")>1) return false
        if(strPhone.indexOf("-")!=-1)bracket=bracket+1
        if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
        var brchr=strPhone.indexOf("(")
    if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
        if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
        s=stripCharsInBag(strPhone,validWorldPhoneChars);
    return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

$(document).ready(function() {
	reset();
		
	function validate_form() {
		reset();
		
		var $name = $("#name");
		var $email = $("#email");
		var $phone = $("#phone");
		var $state = $("#state");
		var $message = $("#message");
		
		var hasError = false;
		var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
		
		var nameVal = $("#name").val();
		if(nameVal == '') {
			$("#name").addClass("error");
			$(".errors").html("Please fix the highlighted fields.");
			hasError = true;
		}
		
		var emailVal = $("#email").val();
		if((emailVal == '') || (!emailReg.test(emailVal))) {
			$("#email").addClass("error");
			$(".errors").html("Please fix the highlighted fields.");
			hasError = true;
		}
		
		if($phone.val() != '' && $phone.length > 0){
    	    if (checkInternationalPhone($phone.val())==false){
    	    	$phone.addClass("error");
    	        $(".errors").html("Please fix the highlighted fields.");
    	        hasError = true;
    	    } else {
    			phoneVal = $phone.val();
    		}
    	} else {
    		phoneVal = '';
    	};
		
		var messageVal = $("#message").val();
		if(messageVal == '') {
			$("#message").addClass("error");
			$(".errors").html("Please fix the highlighted fields.");
			hasError = true;
		}
		
		if(hasError == false) {
			stateVal = $state.val();
			$("#submit").attr("disabled", "disabled");
			$.post("contact-sendmail.php",
   				{ name: nameVal, email: emailVal, phone: phoneVal, state: stateVal, message: messageVal },
   					function(data){
						$("#ContactForm").slideUp("normal", function() {				   
							
							$("#ContactForm").before('<h1 style="margin: 20px 10px;width: 205px;float: left;">Thanks!</h1><p style="width: 205px;">Your email has been sent and we will be contacting you shortly.</p>');											
					});
   				}
			);
		}
	}
	
	function reset() {
		$("#submit").removeAttr("disabled");
		$('#ContactForm input, #ContactForm textarea').removeClass("error");
		$(".errors").html("");
	}
	
	$('#submit').click(function() {
		validate_form();						
	});
	
	$('#reset').click(function() {
		reset();			
	});
});