/**
 * Global variables
 */
var monitorTabs; // Monitor tabs

/**
 * Set the monitor tab
 * 
 * @param o
 *            Tab object
 * @return Nothing
 */
function setMonitorTab(o) {
	monitorTabs = o;
}

/**
 * Get the monitor tab
 * 
 * @param Nothing
 * @return Tab object
 */
function getMonitorTab() {
	return monitorTabs;
}

/**
 * Load the monitor page
 * 
 * @return Nothing
 */
function loadMonitorPage() {
	// If the page is already loaded
	if ($('#monitor_page').children().length) {
		// Do not reload the monitor page
		return;
	}

	// Create monitor tab
	var tab = new Tab();
	setConfigTab(tab);
	tab.init();
	$('#content').append(tab.object());

	// Create provision tab
	var tab = new Tab();
	setMonitorTab(tab);
	tab.init();
	$('#content').append(tab.object());

	/**
	 * Monitor nodes
	 */
	var monitorForm = $('<div class="form"></div>');

	// Create info bar
	var monitorInfoBar = createInfoBar('Select the Monitor Tool');
	monitorForm.append(monitorInfoBar);

	// Create drop-down menu
	// Hardware available to provision - ipmi, blade, hmc, ivm, fsp, and zvm

	var monitorList = $('<ol></ol>');
	var items = "<li><a href='#' name='xcatmon'>xCAT Monitor</a> : xcatmon provides node status " +
			"monitoring using fping on AIX and nmap on Linux. It also provides application " +
			"status monitoring. The status and the appstatus columns of the nodelist table " +
			"will be updated periodically  with the latest status values for the nodes.<li>";
	
	items += "<li><a href='#' name='rmcmon'>RMC Monitor</a> : IBM's Resource Monitoring and Control (RMC) " +
			"subsystem is our recommended software for monitoring xCAT clusters. It's is part " +
			"of the IBM's Reliable Scalable Cluster Technology (RSCT) that provides a comprehensive " +
			"clustering environment for AIX and LINUX.<li>";
	items += "<li><a href='#' name='gangliamon'>Ganglia Monitor</a> : Ganglia is a scalable distributed " + 
			"monitoring system for high-performance computing systems such as clusters and Grids.<li>";
	items += "<li><a href='#' name='pcpmon'>PCP Monitor</a> : <li>";
	
	monitorList.append(items);
	
	$('a', monitorList).click(function(){
		loadMonitorTab($(this).attr('name'));
	});
	
	monitorForm.append(monitorList);
	tab.add('monitorTab', 'Monitor', monitorForm, false);

	/**
	 * Monitor resources
	 */
	var resrcForm = $('<div class="form"></div>');

	// Create info bar
	var resrcInfoBar = createInfoBar('View current resources');
	resrcForm.append(resrcInfoBar);

	// Create radio buttons for platforms
	var hwList =$('<ol>Select a platform to view its current resources:</ol>');
	var ipmi = $('<li><input type="radio" name="hw" value="ipmi" checked/>ipmi</li>');
	var blade = $('<li><input type="radio" name="hw" value="blade"/>blade</li>');
	var hmc = $('<li><input type="radio" name="hw" value="hmc"/>hmc</li>');
	var ivm = $('<li><input type="radio" name="hw" value="ivm"/>ivm</li>');
	var fsp = $('<li><input type="radio" name="hw" value="fsp"/>fsp</li>');
	var zvm = $('<li><input type="radio" name="hw" value="zvm"/>zvm</li>');

	hwList.append(ipmi);
	hwList.append(blade);
	hwList.append(hmc);
	hwList.append(ivm);
	hwList.append(fsp);
	hwList.append(zvm);
	resrcForm.append(hwList);
	
	/**
	 * Ok
	 */
	var okBtn = createButton('Ok');
	okBtn.bind('click', function(event) {
		// Get hardware that was selected
		var hw = $(this).parent().find('input[name="hw"]:checked').val();

		// Generate new tab ID
		var newTabId = hw + 'ResourceTab';
		if (!$('#' + newTabId).length) {
			var loader = createLoader(hw + 'ResourceLoader');
			loader = $('<center></center>').append(loader);
			tab.add(newTabId, hw, loader, true);

			// Create an instance of the plugin
			var plugin;
			switch(hw) {
				case "blade":
		    		plugin = new bladePlugin();
		    		break;
				case "fsp":
					plugin = new fspPlugin();
					break;
				case "hmc":
					plugin = new hmcPlugin();
					break;
				case "ipmi":
					plugin = new ipmiPlugin();
					break;		
				case "ivm":
					plugin = new ivmPlugin();
					break;
				case "zvm":
					plugin = new zvmPlugin();
					break;
			}
			
			plugin.loadResources();
		}

		// Select tab
		tab.select(newTabId);
	});
	resrcForm.append(okBtn);

	tab.add('resourceTab', 'Resources', resrcForm, false);
}

function loadMonitorTab(monitorName){
	//the tab is exist then we only need to select it
	var tab = getMonitorTab();
	if (0 != $("#" + monitorName).length){
		tab.select(monitorName);
		return;
	}
	
	switch(monitorName){
		case 'xcatmon':
			tab.add(monitorName, 'xCAT Monitor', '', true);
			loadXcatMon();
			break;
		case 'rmcmon':
			tab.add(monitorName, 'RMC Monitor', '', true);
			loadRmcMon();
			break;
		case 'gangliamon':
			tab.add(monitorName, 'Ganglia Monitor', '', true);
			loadGangliaMon();
			break;
		case 'pcpmon':
			loadUnfinish(monitorName, tab);
			break;
	}
	
	tab.select(monitorName);
}

function loadUnfinish(monitorName, tab){
	var unfinishPage = $('<div></div>');
	unfinishPage.append(createInfoBar('under construction.'));

	tab.add(monitorName, 'unfinish', unfinishPage, true);	
}