/* AJAX Fun! */

var ecnet_check_url = "ecnet_check.cfm?ecnet="; // The server-side script for checking ECNets
var index_optionStatus_url = "lotto_check.cfm"; //"lotto_check.cfm"; // The server-side script for options
var isWorking = false;
var temp_type;
var temp_uid;
var temp_divid;
var xmlDocument;

/* Stuff when form sends action. */
function checkECNet() {
	if (element('add_rooommate_text').value == undefined || element('add_rooommate_text').value == "") {
		roommateError("Please enter the ECNet username of your desired roommate.");
	} else {
		ecnet = element('add_rooommate_text').value;
		if (roommateCheckECNet(ecnet)) {
			if (!isWorking && http) {
				http.open("GET", ecnet_check_url + ecnet,true);
				http.onreadystatechange = checkECNetResponse; http.send(null);
			}
		}
	}
	element('add_rooommate_text').value = "";
}

/* Stuff when a respond on the HTTPObject is recieved */
function checkECNetResponse() {
	if (http.readyState == 4) {
    	if (http.responseText.indexOf('invalid') == -1) {
			// Use the XML DOM to get the data
			var xmlDocument = http.responseXML;
			var status = xmlDocument.getElementsByTagName('status').item(0).firstChild.data;
			var firstname = xmlDocument.getElementsByTagName('firstname').item(0).firstChild.data;
			var lastname = xmlDocument.getElementsByTagName('lastname').item(0).firstChild.data;
			var ecnet = xmlDocument.getElementsByTagName('ecnet_username').item(0).firstChild.data;
			/* Check status.
				0 = Student cleared
				1 = Student has room
				2 = Student doesn't exist in lotto
			*/
			if (status == 0) {
				roommateAccept(firstname, lastname, ecnet);
			} else if (status == 1) {
				roommateError("This student already has a room.");
			} else if (status == 2) {
				roommateError("This student doesn't exist in your housing lotto.");
			} else {
				roommateError("Something else went wrong.");
			}
			isWorking = false;
		} else {
			roommateError("A system error occored. Blame Seg.");
		}
	}
}

/*
	GET LOTTO OPTION STATUS
*/

function index_getOptionStatus(type,uid,divid) {
	temp_type = type;
	temp_uid = uid;
	temp_divid = divid;
	if (!isWorking && http) {
		http.open("GET", index_optionStatus_url,true);
		http.onreadystatechange = index_getOptionStatusResponse; http.send(null);//(divid,uid,type)
	}
}

function index_getOptionStatusResponse(divid,uid,type) {
	// Vars are in temp_*
	if (http.readyState == 4) {
    	if (http.responseText.indexOf('invalid') == -1) {
			// Use the XML DOM to get the data
				xmlDocument = http.responseXML;
				
			// Loop out the entries in the XML and set the array variables
			/*for (i = 0; i < xmlDocument.getElementsByTagName('lotto').length; i++) {
				// Name of Lotto
					element("tester_"+i).value = xmlDocument.getElementsByTagName('lotto').item(i).firstChild.data;
				// Status of Lotto (1 = Approved; 0 = Disallowed)
					element("id_status_"+i).value = xmlDocument.getElementsByTagName('lotto').item(i).attributes[0].value;
				// ID Number of Lotto
					element("uid_"+i).value = xmlDocument.getElementsByTagName('lotto').item(i).attributes[1].value;
			}*/
			
			index_displayOptions(temp_divid);
			isWorking = false;
			
		} else {
			alert("A system error occored. Blame Seg.");
		}
	} else {
		//element("tester_1").value = http.readyState;
	}
}

// Don't touch.
function getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}
var http = getHTTPObject(); // We create the HTTP Object