/**
 * Tab constructor
 * 
 * @param tabId
 *            Tab ID
 * @param tabName
 *            Tab name
 * @return Nothing
 */
var Tab = function(tabId) {
	this.tabId = tabId;
	this.tabName = null;
	this.tab = null;
};

/**
 * Initialize the tab
 * 
 * @param tabName
 *            Tab name to initialize
 * @return Nothing
 */
Tab.prototype.init = function() {
	// Create a division containing the tab
	this.tab = $('<div class="tab" id="' + this.tabId + '"></div>');
	var tabList = $('<ul></ul>');
	var tabItem = $('<li><a href="#">Dummy tab item</a></li>');
	tabList.append(tabItem);
	this.tab.append(tabList);

	// Create a template with close button
	var tabs = this.tab.tabs();

	tabs.bind('tabsselect', function(event, ui){
		// Save the order tabs were selected
		var order;
		if ($.cookie('tabindex_history')) {
			order = $.cookie('tabindex_history').split(',');
			order[1] = order[0];	// Set index 1 to last selected tab
			order[0] = ui.index;	// Set index 0 to currently selected tab		
		} else {
			// Create an array to track the tab selected
			order = new Array;
			order[0] = ui.index;
			order[1] = ui.index;
		}
		
		$.cookie('tabindex_history', order);
	});

	// Remove dummy tab
	this.tab.tabs("remove", 0);

	// Hide tab
	this.tab.hide();
};

/**
 * Return the tab object
 * 
 * @param Nothing
 * @return Object representing the tab
 */
Tab.prototype.object = function() {
	return this.tab;
};

/**
 * Add a new tab
 * 
 * @param tabId
 *            Tab ID
 * @param tabName
 *            Tab name
 * @param tabCont
 *            Tab content
 * @param closeable
 * 			  Is tab closeable
 * @return Nothing
 */
Tab.prototype.add = function(tabId, tabName, tabCont, closeable) {
	// Show tab
	if (this.tab.css("display") == "none") {
		this.tab.show();
	}

	var newTab = $('<div class="tab" id="' + tabId + '"></div>');
	newTab.append(tabCont);
	this.tab.append(newTab);
	this.tab.tabs("add", "#" + tabId, tabName);
	
	// Append close button
	if (closeable) {
		var header = this.tab.find('ul.ui-tabs-nav a[href="#' + tabId +'"]').parent();
		header.append('<span class=\"tab-close ui-icon ui-icon-close\"></span>');
	
		// Get this tab
		var tabs = this.tab;
		var tabLink = 'a[href="\#' + tabId + '"]';	
		var thisTab = $(tabLink, tabs).parent();
						
		// Close tab when close button is clicked
		thisTab.find('span.tab-close').bind('click', function(event) {
			var tabIndex = ($('li', tabs).index(thisTab));
			
			// Do not remove first tab
			if (tabIndex != 0) {
				// Go back to last tab if user is trying to close currently selected tab
				if (tabs.tabs('option', 'selected') == tabIndex) {
					// Get last selected tab from history
					var order = $.cookie('tabindex_history').split(',');
					if (order[1]) {
						tabs.tabs('select', parseInt(order[1]));
					} else {
						tabs.tabs('select', 0);
					}	
				}							
				
				tabs.tabs('remove', tabIndex);
			}
		});
	}
};

/**
 * Select a tab
 * 
 * @param id
 *            Tab ID to select
 * @return Nothing
 */
Tab.prototype.select = function(id) {
	this.tab.tabs("select", "#" + id);
};

/**
 * Remove a tab
 * 
 * @param id
 *            Tab ID to remove
 * @return Nothing
 */
Tab.prototype.remove = function(id) {
	var selectorStr = 'a[href="\#' + id + '"]';	
	var selectTab = $(selectorStr, this.tab).parent();
	var index = ($('li', this.tab).index(selectTab));
	this.tab.tabs("remove", index);
};

/**
 * Table constructor
 * 
 * @param tabId
 *            Tab ID
 * @param tabName
 *            Tab name
 * @return Nothing
 */
var Table = function(tableId) {
	if ($('#' + tableId).length) {
		this.tableId = tableId;
		this.table = $('#' + tableId);
	} else {
		this.tableId = tableId;
		this.table = null;
	}
};

/**
 * Initialize the table
 * 
 * @param Headers
 *            Array of table headers
 * @return Nothing
 */
Table.prototype.init = function(headers) {
	// Create a table
	this.table = $('<table id="' + this.tableId + '"></table>');
	var thead = $('<thead class="ui-widget-header"></thead>');
	var headRow = $('<tr></tr>');

	// Append headers
	for ( var i in headers) {
		headRow.append('<th>' + headers[i] + '</th>');
	}

	thead.append(headRow);
	this.table.append(thead);

	// Append table body
	var tableBody = $('<tbody></tbody>');
	this.table.append(tableBody);
};

/**
 * Return the table object
 * 
 * @param Nothing
 * @return Object representing the table
 */
Table.prototype.object = function() {
	return this.table;
};

/**
 * Add a row to the table
 * 
 * @param rowCont
 *            Array of table row contents
 * @return Nothing
 */
Table.prototype.add = function(rowCont) {
	// Create table row
	var tableRow = $('<tr></tr>');

	// Create a column for each content
	var tableCol;
	for ( var i in rowCont) {
		tableCol = $('<td></td>');
		tableCol.append(rowCont[i]);
		tableRow.append(tableCol);
	}

	// Append table row to table
	this.table.find('tbody').append(tableRow);
};

/**
 * Add a footer to the table
 * 
 * @param rowCont
 *            Array of table row contents
 * @return Nothing
 */
Table.prototype.addFooter = function(rowCont) {
	// Create table row
	var tableFoot = $('<tfoot></tfoot>');
	tableFoot.append(rowCont);

	// Append table row to table
	this.table.append(tableFoot);
};

/**
 * Remove a row from the table
 * 
 * @return Nothing
 */
Table.prototype.remove = function(id) {
	// To be continued
};

/**
 * Datatable class constructor
 * 
 * @param tabId
 *            Tab ID
 * @param tabName
 *            Tab name
 * @return Nothing
 */
var DataTable = function(tableId) {
	this.dataTableId = tableId;
	this.dataTable = null;
};

/**
 * Initialize the datatable
 * 
 * @param Headers
 *            Array of table headers
 * @return Nothing
 */
DataTable.prototype.init = function(headers) {
	// Create a table
	this.dataTable = $('<table class="datatable" id="' + this.dataTableId + '"></table>');
	var thead = $('<thead class="ui-widget-header"></thead>');
	var headRow = $('<tr></tr>');

	// Append headers
	for ( var i in headers) {
		headRow.append('<th>' + headers[i] + '</th>');
	}

	thead.append(headRow);
	this.dataTable.append(thead);

	// Append table body
	var tableBody = $('<tbody></tbody>');
	this.dataTable.append(tableBody);
};

/**
 * Return the datatable object
 * 
 * @param Nothing
 * @return Object representing the table
 */
DataTable.prototype.object = function() {
	return this.dataTable;
};

/**
 * Add a row to the datatable
 * 
 * @param rowCont
 *            Array of table row contents
 * @return Nothing
 */
DataTable.prototype.add = function(rowCont) {
	// Create table row
	var tableRow = $('<tr></tr>');

	// Create a column for each content
	var tableCol;
	for ( var i in rowCont) {
		tableCol = $('<td></td>');
		tableCol.append(rowCont[i]);
		tableRow.append(tableCol);
	}

	// Append table row to table
	this.dataTable.find('tbody').append(tableRow);
};

/**
 * Create status bar
 * 
 * @param barId
 *            Status bar ID
 * @return Status bar
 */
function createStatusBar(barId) {
	var statusBar = $('<div class="ui-state-highlight ui-corner-all" id="' + barId + '"></div>').css({
		'margin-bottom': '5px',
		'min-height': '30px'
	});
	
	// Create info icon
	var icon = $('<span class="ui-icon ui-icon-circle-check"></span>').css({
		'display': 'inline-block',
		'margin': '10px 5px',
		'vertical-align': 'top'
	});
	
	// Create message section
	var msg = $('<div></div>').css({
		'display': 'inline-block',
		'margin': '10px 0px',
		'width': '90%'
	});
	
	// Create hide button
	var hide = $('<span class="ui-icon ui-icon-minus"></span>').css({
		'display': 'inline-block',
		'float': 'right',
		'margin': '10px 5px',
		'cursor': 'pointer'
	}).click(function() {
		// Remove info box on-click
		$(this).parent().hide();
	});
	
	statusBar.append(icon);
	statusBar.append(msg);
	statusBar.append(hide);
	return statusBar;
}

/**
 * Create info bar
 * 
 * @param msg
 *            Info message
 * @return Info bar
 */
function createInfoBar(msg) {
	var infoBar = $('<div class="ui-state-highlight ui-corner-all"></div>').css('margin', '5px 0px');
	var icon = $('<span class="ui-icon ui-icon-info"></span>').css({
		'display': 'inline-block',
		'margin': '10px 5px'
	});
	var msg = $('<p>' + msg + '</p>').css({
		'display': 'inline-block',
		'width': '90%'
	});
	
	infoBar.append(icon);
	infoBar.append(msg);
	return infoBar;
}

/**
 * Create warning bar
 * 
 * @param msg
 *            Warning message
 * @return Warning bar
 */
function createWarnBar(msg) {
	var warnBar = $('<div class="ui-state-error ui-corner-all"></div>');
	var icon = $('<span class="ui-icon ui-icon-alert"></span>').css({
		'display': 'inline-block',
		'margin': '10px 5px'
	});
	var msg = $('<p>' + msg + '</p>').css({
		'display': 'inline-block',
		'width': '90%'
	});
	
	warnBar.append(icon);
	warnBar.append(msg);
	return warnBar;
}

/**
 * Create a loader
 * 
 * @param loaderId
 *            Loader ID
 * @return Loader
 */
function createLoader(loaderId) {
	var loader = $('<img id="' + loaderId + '" src="images/loader.gif"></img>');
	return loader;
}

/**
 * Create a button
 * 
 * @param name
 *            Name of the button
 * @return Nothing
 */
function createButton(name) {
	var button = $('<button>' + name + '</button>').button();
	return button;
}

/**
 * Create a menu
 * 
 * @param items
 *            An array of items to go into the menu
 * @return A division containing the menu
 */
function createMenu(items) {
	var menu = $('<ul class="sf-menu ui-state-default"></ul>');

	// Loop through each item
	for ( var i in items) {
		// Append item to menu
		var item = $('<li></li>');

		// If it is a sub menu
		if (items[i] instanceof Array) {
			// 1st index = Sub menu title
			item.append(items[i][0]);
			// 2nd index = Sub menu
			item.append(items[i][1]);
		} else {
			item.append(items[i]);
		}
				
		menu.append(item);
	}
	
	return menu;
}

/**
 * Initialize the page
 * 
 * @return Nothing
 */
function initPage() {	
	// Load theme
	var theme = $.cookie('xcat_theme');
	if (theme) {
		switch (theme) {
			case 'cupertino':
				includeCss("css/themes/jquery-ui-cupertino.css");
				break;
			case 'dark_hive':
				includeCss("css/themes/jquery-ui-dark_hive.css");
				break;
			case 'redmond':
				includeCss("css/themes/jquery-ui-redmond.css");
				break;
			case 'start':
				includeCss("css/themes/jquery-ui-start.css");
				break;
			case 'sunny':
				includeCss("css/themes/jquery-ui-sunny.css");
				break;
			case 'ui_dark':
				includeCss("css/themes/jquery-ui-ui_darkness.css");
				break;
			default:
				includeCss("css/themes/jquery-ui-start.css");
		}				
	} else {
		includeCss("css/themes/jquery-ui-start.css");
	}

	// Load jQuery stylesheets
	includeCss("css/jquery.dataTables.css");
	includeCss("css/superfish.css");
	includeCss("css/jstree.css");
	includeCss("css/jquery.jqplot.css");
	
	// Load custom stylesheet
	includeCss("css/style.css");	
	
	// JQuery plugins
	includeJs("js/jquery/jquery.dataTables.min.js");
	includeJs("js/jquery/jquery.form.min.js");
	includeJs("js/jquery/jquery.jeditable.min.js");
	includeJs("js/jquery/jquery.contextmenu.min.js");
	includeJs("js/jquery/superfish.min.js");
	includeJs("js/jquery/hoverIntent.min.js");
	includeJs("js/jquery/jquery.jstree.min.js");
	includeJs("js/jquery/tooltip.min.js");
	includeJs("js/jquery/jquery.serverBrowser.min.js");
	includeJs("js/jquery/jquery.jqplot.min.js");
    includeJs("js/jquery/jqplot.pieRenderer.min.js");
    includeJs("js/jquery/jqplot.dateAxisRenderer.min.js");
    
	// Page plugins
	includeJs("js/configure/configure.js");	
	includeJs("js/monitor/monitor.js");
	includeJs("js/nodes/nodes.js");
	includeJs("js/provision/provision.js");
	
	// Custom plugins
	includeJs("js/custom/blade.js");
	includeJs("js/custom/ipmi.js");
	includeJs("js/custom/zvm.js");
	includeJs("js/custom/hmc.js");
	includeJs("js/custom/customUtils.js");

	// Enable settings link 	
	$('#xcat_settings').click(function() {
		openSettings();
	});
	
	// Set header to theme
	var background = '', color = '';
	var theme = $.cookie('xcat_theme');
	if (theme) {
		switch (theme) {
			case 'cupertino':
				background = '#3BAAE3';
				color = 'white';
				break;
			case 'dark_hive':
				background = '#0972A5';
				break;
			case 'redmond':
				background = '#F5F8F9';
				color = '#E17009';
				break;
			case 'start':
				background = '#6EAC2C';
				break;
			case 'sunny':
				background = 'white';
				color = '#0074C7';
				break;
			case 'ui_dark':
				background = '#F58400';
				break;
			default:
				background = '#6EAC2C';
		}				
	} else {
		background = '#6EAC2C';
	}
	
	$('#header').addClass('ui-state-default');
	$('#header').css('border', '0px');
	
	// Set theme to user span
	$('#login_user').css('color', color);
	
	// Style for selected page
	var style = {
		'background-color': background,
		'color': color
	};

	// Get the page being loaded
	var url = window.location.pathname;
	var page = url.replace('/xcat/', '');
	var headers = $('#header ul li a');
		
	// Show the page
	$("#content").children().remove();
	if (page == 'configure.php') {
		includeJs("js/configure/update.js");
		includeJs("js/configure/discover.js");
		headers.eq(1).css(style);
		loadConfigPage();
	} else if (page == 'provision.php') {
		includeJs("js/provision/images.js");
		headers.eq(2).css(style);
		loadProvisionPage();
	} else if (page == 'monitor.php') {
		includeJs("js/monitor/xcatmon.js");
		includeJs("js/monitor/rmcmon.js");
		includeJs("js/monitor/gangliamon.js");
		headers.eq(3).css(style);
		loadMonitorPage();
	} else if (page == 'guide.php') {
	    includeJs("js/guide/guide.js");
	    headers.eq(4).css(style);
        loadGuidePage();
	} else {
		// Load nodes page by default
	    includeJs("js/jquery/jquery.topzindex.min.js");
        includeJs("js/nodes/nodeset.js");
        includeJs("js/nodes/rnetboot.js");
        includeJs("js/nodes/updatenode.js");
        includeJs("js/nodes/physical.js");
        includeJs("js/nodes/mtm.js");
		headers.eq(0).css(style);
		loadNodesPage();
	}
}

/**
 * Include javascript file in <head>
 * 
 * @param file
 *            File to include
 * @return Nothing
 */
function includeJs(file) {
	var script = $("head script[src='" + file + "']");

	// If <head> does not contain the javascript
	if (!script.length) {
		// Append the javascript to <head>
		var script = $('<script></script>');
		script.attr( {
			type : 'text/javascript',
			src : file
		});

		$('head').append(script);
	}
}

/**
 * Include CSS link in <head>
 * 
 * @param file
 *            File to include
 * @return Nothing
 */
function includeCss(file) {
	var link = $("head link[href='" + file + "']");

	// If <head> does not contain the link
	if (!link.length) {
		// Append the CSS link to <head>
		var link = $('<link>');
		link.attr( {
			type : 'text/css',
			rel : 'stylesheet',
			href : file
		});

		$('head').append(link);
	}
}

/**
 * Write ajax response to a paragraph
 * 
 * @param rsp
 * 			Ajax response
 * @param pattern
 * 			Pattern to replace with a break
 * @return Paragraph containing ajax response
 */
function writeRsp(rsp, pattern) {
	// Create paragraph to hold ajax response
	var prg = $('<pre></pre>');
	
	for ( var i in rsp) {
		if (rsp[i]) {
			// Create regular expression for given pattern
			// Replace pattern with break
			if (pattern) {
				rsp[i] = rsp[i].replace(new RegExp(pattern, 'g'), '<br/>');
				prg.append(rsp[i]);
			} else {
				prg.append(rsp[i]);
				prg.append('<br/>');
			}			
		}
	}

	return prg;
}

/**
 * Open a dialog and show given message
 * 
 * @param type
 * 			Type of dialog, i.e. warn or info
 * @param msg
 * 			Message to show
 * @return Nothing
 */
function openDialog(type, msg) {
	var msgDialog; 
	if (type == "warn") {
		// Create warning message 
		msgDialog = $('<div class="ui-state-error ui-corner-all">'
				+ '<p><span class="ui-icon ui-icon-alert"></span>' + msg + '</p>'
			+ '</div>');
	} else {
		// Create info message
		msgDialog = $('<div class="ui-state-highlight ui-corner-all">' 
				+ '<p><span class="ui-icon ui-icon-info"></span>' + msg + '</p>'
			+'</div>');
	}
	
	// Open dialog
	msgDialog.dialog({
		modal: true,
		width: 500,
		buttons: {
			"Ok": function(){ 
				$(this).dialog("close");
			}
		}
	});
}

/**
 * Create an iframe to hold the output of an xCAT command
 * 
 * @param src
 * 			The URL of the document to show in the iframe
 * @return Info box containing the iframe
 */
function createIFrame(src) {
	// Put an iframe inside an info box
	var infoBar = $('<div class="ui-state-highlight ui-corner-all"></div>').css({
		'margin-bottom': '5px'
	});
	
	// Create info and close icons
	var icon = $('<span class="ui-icon ui-icon-info"></span>').css({
		'display': 'inline-block',
		'margin': '10px 5px'
	});
	var close = $('<span class="ui-icon ui-icon-close"></span>').css({
		'display': 'inline-block',
		'float': 'right',
		'margin': '10px 5px'
	}).click(function() {
		// Remove info box on-click
		$(this).parent().remove();
	});
		
	var iframe = $('<iframe></iframe>').attr('src', src).css({
		'display': 'block',
		'border': '0px',
		'margin': '10px',
		'width': '100%'
	});
	
	var loader = createLoader('iLoader').css({
		'display': 'block',
		'margin': '10px 0px'
	});
		
	infoBar.append(icon);
	infoBar.append($('<div style="display: inline-block; width: 90%;"></div>').append(loader, iframe));
	infoBar.append(close);
	
	// Remove loader when done
	iframe.load(function() {
		loader.remove();
	});
	
	return infoBar;
}


/**
 * Open dialog to set xCAT UI settings
 * 
 * @return Nothing
 */
function openSettings() {
	// Create form to add node range
	var settingsForm = $('<div class="form"></div>');
	var info = createInfoBar('Select the settings you desire');
	settingsForm.append(info);
	
	// Create select drop down for themes
	var themeFS = $('<fieldset></fieldset>');
	settingsForm.append(themeFS);
	var legend = $('<legend>Theme</legend>');
	themeFS.append(legend);
	var oList = $('<ol></ol>');
	oList.append($('<li><input type="radio" name="theme" value="cupertino">Cupertino</li>'));
	oList.append($('<li><input type="radio" name="theme" value="dark_hive">Dark Hive</li>'));
	oList.append($('<li><input type="radio" name="theme" value="redmond">Redmond</li>'));
	oList.append($('<li><input type="radio" name="theme" value="start">Start (default)</li>'));
	oList.append($('<li><input type="radio" name="theme" value="sunny">Sunny</li>'));
	oList.append($('<li><input type="radio" name="theme" value="ui_dark">UI Darkness</li>'));
	themeFS.append(oList);
	
	if ($.cookie('xcat_theme')) {
		// Select theme
		oList.find('input[value="' + $.cookie('xcat_theme') + '"]').attr('checked', true);
	}

	// Open form as a dialog
	settingsForm.dialog({
		modal: true,
		title: 'Settings',
		width: 400,
		buttons: {
        	"Ok": function(){
        		// Save selected theme
        		var theme = $(this).find('input[name="theme"]:checked').val();
        		$.cookie('xcat_theme', theme);	// Do not expire cookie, keep it as long as possible
        		
        		// Show instructions to apply theme
        		$(this).empty();
        		var info = createInfoBar('You will need to reload this page in order for changes to take effect');
        		$(this).append(info);
        		
        		// Only show close button
        		$(this).dialog("option", "buttons", {
        			"Close" : function() {
        				$(this).dialog( "close" );
        			}
        		});
        	},
        	"Cancel": function(){
        		$(this).dialog( "close" );
        	}
		}
	});
}

/**
 * Adjust datatable column size
 * 
 * @param tableId
 * 			Table ID
 * @return Nothing
 */
function adjustColumnSize(tableId) {
	var cols = $('#' + tableId).find('tbody tr:eq(0) td');
	
	// If the column size is zero, wait until table is initialized
	if (!cols.eq(1).outerWidth()) {
		adjustColumnSize(tableId);
	} else {
		for (var i in cols) {
			var headers = $('#' + tableId + '_wrapper .dataTables_scrollHead .datatable thead tr th').eq(i);
			headers.css('width', cols.eq(i).outerWidth());
		}		
	}	
}

/**
 * Set menu theme
 * 
 * @param menu
 * 			Menu object
 * @return Nothing
 */
function setMenu2Theme(menu) {
	// On hover
	var background = '', color = '';
	var theme = $.cookie('xcat_theme');
	if (theme) {
		switch (theme) {
			case 'cupertino':
				background = '#3BAAE3';
				color = 'white';
				break;
			case 'dark_hive':
				background = '#0972A5';
				break;
			case 'redmond':
				background = '#F5F8F9';
				color = '#E17009';
				break;
			case 'start':
				background = '#6EAC2C';
				break;
			case 'sunny':
				background = 'white';
				color = '#0074C7';
				break;
			case 'ui_dark':
				background = '#F58400';
				break;
			default:
				background = '#6EAC2C';
		}				
	} else {
		background = '#6EAC2C';
	}
	
	menu.css('background', background);
	menu.find('a:eq(0)').css('color', color);
}

/**
 * Set menu back to normal before applying theme
 * 
 * @param menu
 * 			Menu object
 * @return Nothing
 */
function setMenu2Normal(menu) {
	// Change back to normal
	menu.css('background', '');
	menu.find('a:eq(0)').css('color', '');
}