/***********************************
 registerAjax.js
 EmeNet Solutions - Quickchef.co.uk
 version 0.1
 Check username Availability AJAX Javascript file
************************************/

window.onload = function()
{

var clickButton = document.getElementById("checkusername"); /* check username button */

clickButton.onclick = function()
{
	
	var spanTag = document.getElementById("checkoutput");
	var usernameText = document.getElementById("username");
	clickButton.disabled = 'disabled';

	
	if ((usernameText !== undefined) && usernameText.value.length > 3)
	{
		var reqUrl = "/register/" + usernameText.value + "/";
		
		var handleSuccess = function(o)
		{
			if(o.responseText !== undefined)
			{
				/*spanTag.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
				spanTag.innerHTML += "<li>HTTP status: " + o.status + "</li>";
				spanTag.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
				spanTag.innerHTML += "<li>HTTP headers: <ul>" + o.getAllResponseHeaders + "</ul></li>";
				spanTag.innerHTML += "<li>Server response: " + o.responseText + "</li>";*/
				//spanTag.innerHTML += "<li>Server response: " + o.responseText + "</li>";
				var userExists = eval('(' + o.responseText + ')');
				
				if (userExists)
				{
					spanTag.innerHTML = '<br /><span style="color:#f00;font-size:0.6pc">Username already exists, try another username.</span>';
				}
				else
				{
					spanTag.innerHTML = '<img src="images/tick.png" alt="Passed"/>';
				}
				clickButton.disabled = '';
			}
		}

		var handleFailure = function(o)
		{
			if(o.responseText !== undefined){
				spanTag.innerHTML = "<li>Transaction id: " + o.tId + "</li>";
				spanTag.innerHTML += "<li>HTTP status: " + o.status + "</li>";
				spanTag.innerHTML += "<li>Status code message: " + o.statusText + "</li>";
			}
			clickButton.disabled = '';
		}

		var callback =
		{
			success:handleSuccess,
			failure: handleFailure
	  		//argument: { foo:"foo", bar:"bar" }
		};
	
		var request = YAHOO.util.Connect.asyncRequest('GET', reqUrl, callback);
	}
	else
	{
		spanTag.innerHTML = '<br /><span style="color:#f00;font-size:0.6pc">Enter at least a 3 character username</span>';
		clickButton.disabled = '';
	}
};

};