signup.js

var validation = {"studentid":false, "username":false, "realname":false, "address":false, "contact":false, "email":false, "phone":false};
function validate(){
	var valid = true;
	for (field in req){
		if (!validation[req[field]]){
			valid=false;
			break;
		}
	}
	if(valid || ($('input#override:checked').size()==1)){
		$('input#submit').removeAttr("disabled");
	}
	else{
		$('input#submit').attr("disabled","disabled");
	}
	

}
function processPostcode(){
		// lookup postcode
                $.getJSON("signup/ajax",{key: "postcode",value: $('input#postcode').val().replace(/ /g,'')}, function(j){
			//populate dropdown	
                        var options = '';
                        if (j.length > 1) {
				// make dropdown visible
                                $('div#addseldiv').removeAttr("style");
                                for (var i = 0; i < j.length; i++) {
                                        options += '<option>' + j[i] + '</option>';
                                }
                                $("select#addsel").html(options);
                                $('select#addsel option:first').attr('selected', 'selected');
                        }
                        if (j.length == 1) {
                                $('div#addseldiv').attr("style","display:none");
                                $("textarea#address").val(j[0].replace(/, /g,'\n'))
				$('div#addressmessage').attr("style","color:green");
				$('div#addressmessage').html("OK");
				validation["address"]=true;
				validate();
                        }
                })
}

function lookupSID(setname){
        $.get("signup/ajax",{key:"sid" ,value: $('input#studentid').val()},function(j){
                arr=j.split(":");
                key=arr.shift();
                val=arr.join(":");
                if(key=="OK"){
			if(setname=true)
				$("input#realname").val(val);
                        $('div#studentidmessage').attr("style","color:green");
			$('div#studentidmessage').html(key);
			validation['studentid']=true;
			processName("realname","realname");

                }
                else{
                        $('div#studentidmessage').attr("style","color:red");
			$('div#studentidmessage').html(val);
			validation['email']=false;
			validate();
                }
        },'text')
}
function processSID(){
	lookupSID(true);
}

function processUsername(){
        $.get("signup/ajax",{key: "username", value: $('input#username').val()},function(j){
                if (j!="OK") {
                        $('div#usernamemessage').attr("style","color:red");
			validation['username']=false;
                }
                else{   
                        $('div#usernamemessage').attr("style","color:green");
			validation['username']=true;
                }
		$('div#usernamemessage').html(j);
		validate();
        },'text')
}

function processName(type, input){
        $.get("signup/ajax",{key: type, value: $('input#'+input).val()},function(j){
                if (j!="OK") {
                        $('div#'+input+'message').attr("style","color:red");
			validation[input]=false;
                }
                else{   
                        $('div#'+input+'message').attr("style","color:green");
			validation[input]=true;
                }
		$('div#'+input+'message').html(j);
		validate();
        },'text')
}
function processContact(){
	processName('realname','contact');
}

function processAddress(){
        $.get("signup/ajax",{key: "address", value: $('textarea#address').val()},function(j){
                if (j!="OK") {
                        $('div#addressmessage').attr("style","color:red");
                        validation['address']=false;
                }   
                else{   
                        $('div#addressmessage').attr("style","color:green");
                        validation['address']=true;
                }
		$('div#addressmessage').html(j);
		validate();
        },'text')
}

function processEmail(){
        $.get("signup/ajax",{key: "email", value: $('input#email').val()},function(j){
                if (j!="OK") {
                        $('div#emailmessage').attr("style","color:red");
			validation['email']=false;
                }
                else{   
                        $('div#emailmessage').attr("style","color:green");
			validation['email']=true;
                }
		$('div#emailmessage').html(j);
		validate();
        },'text')
}

function processPhone(){
        $.get("signup/ajax",{key: "phone", value: $('input#phone').val()},function(j){
                if (j!="OK") {
                        $('div#phonemessage').attr("style","color:red");
			validation['phone']=false;
                }
                else{   
                        $('div#phonemessage').attr("style","color:green");
			validation['phone']=true;
                }
		$('div#phonemessage').html(j);
		validate();
        },'text')
}

$(function(){
	if($('input#studentid').size()==1){
		usertype=1;
	}
	else if($('input#contact').size()==1){
		usertype=2;
	}
	else{
		usertype=5;
	}
        req=new Array("username","realname","email","phone");
        switch(usertype){
                case "1":
                        req.push("studentid","address");
                        break;
                case "2":
                        req.push("contact");
                        break;
                case "5":
                        req.push("address");
        }
	//usertype=$('input#usertype').val();
	$("document").ready(function(){
		// makes script sutff appear
		$('div#postcodediv').removeAttr("style");
		$('input#submit').attr("disabled","disabled");
		// if the fields are not empty validate them
		if($('input#username').val()!="") processUsername();
		if($('input#email').val()!="") processEmail();
		if($('input#phone').val()!="") processPhone();
		if(usertype!=2){
			if($('input#postcode').val()!="") processPostcode();
			if($('textarea#address').val()!="") processAddress();
			if($('input#realname').val()!="") processName("realname","realname");
		}
		else{
			if($('input#contact').val()!="") processContact();
			if($('input#realname').val()!="") processName("socname","realname");
		}
		if((usertype==1) && ($('input#studentid').val()!="")){
			if($('input#realname').val()=="") lookupSID(true);
			else lookupSID(false);
		}

		validate();
	})
	// dont do address stuff for societies
	if(usertype!=2){
	// process postcode when the box changes
	$("input#postcode").change(processPostcode);
	
	//populate the address box when an address is selected
	$("select#addsel").change(function(){
		$("textarea#address").val($('select#addsel').val().replace(/, /g,'\n'));
		$('div#addressmessage').attr("style","color:green");
		$('div#addressmessage').html("OK");
		validation['address']=true;
	})
	}
	//else deal with the contact field
	else{
        $("input#contact").change(processContact)

	}
	//if is a student
	if(usertype==1){
	//lookup the real name from the studentid
	$("input#studentid").change(processSID)
	}
	//validate username
	$("input#username").change(processUsername)
	//validate personal and society names differntly
	if(usertype!=2){
		persoc='realname';
	}
	else{
		persoc='socname';
	}
	//validate real name
	$("input#realname").change(function(){
		processName(persoc, 'realname');
	})
	
        //validate email address
        $("input#email").change(processEmail);
        //validate phone number
        $("input#phone").change(processPhone);
	$("textarea#address").change(processAddress);
	$("input#override").change(validate);
})