/**
 * Create nodes datatable for a given group
 * 
 * @param group
 *            Group name
 * @param outId
 *            Division ID to append datatable
 * @return Nodes datatable
 */
function createNodesDatatable(group, outId) {
	// Get group nodes
	$.ajax( {
		url : 'lib/cmd.php',
		dataType : 'json',
		data : {
			cmd : 'lsdef',
			tgt : '',
			args : group,
			msg : outId
		},

		/**
		 * Create nodes datatable
		 * 
		 * @param data
		 *            Data returned from HTTP request
		 * @return Nothing
		 */
		success : function(data) {
			// Data returned
    		var rsp = data.rsp;
    
    		// Get output ID
    		var outId = data.msg;
    		// Get datatable ID
    		var dTableId = outId.replace('DIV', '');
    
    		// Node attributes hash
    		var attrs = new Object();
    		// Node attributes
    		var headers = new Object();
    
    		// Clear nodes datatable division
    		$('#' + outId).empty();
    
    		// Create nodes datatable
    		var node, args;
    		for ( var i in rsp) {
    			// Get node
    			var pos = rsp[i].indexOf('Object name:');
    			if (pos > -1) {
    				var temp = rsp[i].split(': ');
    				node = jQuery.trim(temp[1]);
    
    				// Create a hash for the node attributes
    				attrs[node] = new Object();
    				i++;
    			}
    
    			// Get key and value
    			args = rsp[i].split('=');
    			var key = jQuery.trim(args[0]);
    			var val = jQuery.trim(args[1]);
    
    			// Create hash table
    			attrs[node][key] = val;
    			headers[key] = 1;
    		}
    
    		// Sort headers
    		var sorted = new Array();
    		for ( var key in headers) {
    			sorted.push(key);
    		}
    		sorted.sort();
    
    		// Add column for check box and node
    		sorted.unshift('<input type="checkbox" onclick="selectAllCheckbox(event, $(this))">', 'node');
    
    		// Create nodes datatable
    		var dTable = new DataTable(dTableId);
    		dTable.init(sorted);
    
    		// Go through each node
    		for ( var node in attrs) {
    			// Create a row
    			var row = new Array();
    			// Create a check box
    			var checkBx = '<input type="checkbox" name="' + node + '"/>';
    			row.push(checkBx, node);
    
    			// Go through each header
    			for ( var i = 2; i < sorted.length; i++) {
    				// Add node attributes to the row
    				var key = sorted[i];
    				var val = attrs[node][key];
    				if (val) {
    					row.push(val);
    				} else {
    					row.push('');
    				}
    			}
    
    			// Add row to table
    			dTable.add(row);
    		}
    
    		$('#' + outId).append(dTable.object());
    		$('#' + dTableId).dataTable();
    	} // End of function(data)
	});
}

/**
 * Create provision existing node division
 * 
 * @param plugin
 * 			  Plugin name to create division for
 * @param inst
 *            Provision tab instance
 * @return Provision existing node division
 */
function createProvisionExisting(plugin, inst) {
	// Create provision existing division and hide it
	var provExisting = $('<div></div>').hide();

	// Create group input
	var group = $('<div></div>');
	var groupLabel = $('<label for="provType">Group:</label>');
	group.append(groupLabel);

	// Turn on auto complete for group
	var dTableDivId = plugin + 'NodesDatatableDIV' + inst;	// Division ID where nodes datatable will be appended
	var groupNames = $.cookie('groups');
	if (groupNames) {
		// Split group names into an array
		var tmp = groupNames.split(',');

		// Create drop down for groups
		var groupSelect = $('<select></select>');
		groupSelect.append('<option></option>');
		for ( var i in tmp) {
			// Add group into drop down
			var opt = $('<option value="' + tmp[i] + '">' + tmp[i] + '</option>');
			groupSelect.append(opt);
		}
		group.append(groupSelect);

		// Create node datatable
		groupSelect.change(function() {
			// Get group selected
			var thisGroup = $(this).val();
			// If a valid group is selected
			if (thisGroup) {
				createNodesDatatable(thisGroup, dTableDivId);
			} // End of if (thisGroup)
		});
	} else {
		// If no groups are cookied
		var groupInput = $('<input type="text" name="group"/>');
		group.append(groupInput);
	}
	provExisting.append(group);

	// Create node input
	var node = $('<div></div>');
	var nodeLabel = $('<label for="nodeName">Nodes:</label>');
	var nodeDatatable = $('<div class="indent" id="' + dTableDivId + '"><p>Select a group to view its nodes</p></div>');
	node.append(nodeLabel);
	node.append(nodeDatatable);
	provExisting.append(node);

	// Create boot method drop down
	var method = $('<div></div>');
	var methodLabel = $('<label for="method">Boot method:</label>');
	var methodSelect = $('<select id="bootMethod" name="bootMethod"></select>');
	methodSelect.append('<option value="boot">boot</option>'
		+ '<option value="install">install</option>'
		+ '<option value="iscsiboot">iscsiboot</option>'
		+ '<option value="netboot">netboot</option>'
		+ '<option value="statelite">statelite</option>'
	);
	method.append(methodLabel);
	method.append(methodSelect);
	provExisting.append(method);

	// Create boot type drop down
	var type = $('<div></div>');
	var typeLabel = $('<label for="type">Boot type:</label>');
	var typeSelect = $('<select id="bootType" name="bootType"></select>');
	typeSelect.append('<option value="pxe">pxe</option>'
		+ '<option value="iscsiboot">yaboot</option>'
		+ '<option value="zvm">zvm</option>'
	);
	type.append(typeLabel);
	type.append(typeSelect);
	provExisting.append(type);

	// Create operating system input
	var os = $('<div></div>');
	var osLabel = $('<label for="os">Operating system:</label>');
	var osInput = $('<input type="text" name="os"/>');
	osInput.one('focus', function() {
		var tmp = $.cookie('osvers');		
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	os.append(osLabel);
	os.append(osInput);
	provExisting.append(os);

	// Create architecture input
	var arch = $('<div></div>');
	var archLabel = $('<label for="arch">Architecture:</label>');
	var archInput = $('<input type="text" name="arch"/>');
	archInput.one('focus', function() {
		var tmp = $.cookie('osarchs');
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	arch.append(archLabel);
	arch.append(archInput);
	provExisting.append(arch);

	// Create profile input
	var profile = $('<div></div>');
	var profileLabel = $('<label for="profile">Profile:</label>');
	var profileInput = $('<input type="text" name="profile"/>');
	profileInput.one('focus', function() {
		var tmp = $.cookie('profiles');
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	profile.append(profileLabel);
	profile.append(profileInput);
	provExisting.append(profile);

	/**
	 * Provision existing
	 */
	var provisionBtn = createButton('Provision');
	provisionBtn.bind('click', function(event) {
		// TODO Insert provision code here
		openDialog('info', 'Not yet supported');
	});
	provExisting.append(provisionBtn);

	return provExisting;
}

/**
 * Create provision new node division
 * 
 * @param inst
 *            Provision tab instance
 * @return Provision new node division
 */
function createProvisionNew(plugin, inst) {
	// Create provision new node division
	var provNew = $('<div></div>');

	// Create node input
	var nodeName = $('<div><label for="nodeName">Node:</label><input type="text" name="nodeName"/></div>');
	provNew.append(nodeName);

	// Create group input
	var group = $('<div></div>');
	var groupLabel = $('<label for="group">Group:</label>');
	var groupInput = $('<input type="text" name="group"/>');
	groupInput.one('focus', function() {
		var groupNames = $.cookie('groups');
		if (groupNames) {
			// Turn on auto complete
			$(this).autocomplete({
				source: groupNames.split(',')
			});
		}
	});
	group.append(groupLabel);
	group.append(groupInput);
	provNew.append(group);

	// Create boot method drop down
	var method = $('<div></div>');
	var methodLabel = $('<label for="method">Boot method:</label>');
	var methodSelect = $('<select id="bootMethod" name="bootMethod"></select>');
	methodSelect.append('<option value="boot">boot</option>'
		+ '<option value="install">install</option>'
		+ '<option value="iscsiboot">iscsiboot</option>'
		+ '<option value="netboot">netboot</option>'
		+ '<option value="statelite">statelite</option>'
	);
	method.append(methodLabel);
	method.append(methodSelect);
	provNew.append(method);

	// Create boot type drop down
	var type = $('<div></div>');
	var typeLabel = $('<label for="type">Boot type:</label>');
	var typeSelect = $('<select id="bootType" name="bootType"></select>');
	typeSelect.append('<option value="install">pxe</option>'
		+ '<option value="iscsiboot">yaboot</option>'
		+ '<option value="zvm">zvm</option>'
	);
	type.append(typeLabel);
	type.append(typeSelect);
	provNew.append(type);

	// Create operating system input
	var os = $('<div></div>');
	var osLabel = $('<label for="os">Operating system:</label>');
	var osInput = $('<input type="text" name="os"/>');
	osInput.one('focus', function() {
		var tmp = $.cookie('osvers');
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	os.append(osLabel);
	os.append(osInput);
	provNew.append(os);

	// Create architecture input
	var arch = $('<div></div>');
	var archLabel = $('<label for="arch">Architecture:</label>');
	var archInput = $('<input type="text" name="arch"/>');
	archInput.one('focus', function() {
		var tmp = $.cookie('osarchs');
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	arch.append(archLabel);
	arch.append(archInput);
	provNew.append(arch);

	// Create profile input
	var profile = $('<div></div>');
	var profileLabel = $('<label for="profile">Profile:</label>');
	var profileInput = $('<input type="text" name="profile"/>');
	profileInput.one('focus', function() {
		var tmp = $.cookie('profiles');
		if (tmp) {
			// Turn on auto complete
			$(this).autocomplete({
				source: tmp.split(',')
			});
		}
	});
	profile.append(profileLabel);
	profile.append(profileInput);
	provNew.append(profile);

	/**
	 * Provision new node
	 */
	var provisionBtn = createButton('Provision');
	provisionBtn.bind('click', function(event) {
		// TODO Insert provision code here
		openDialog('info', 'Not yet supported');
	});
	provNew.append(provisionBtn);

	return provNew;
}

/**
 * Create section to provision node
 * 
 * @param plugin
 * 			  Plugin name
 * @param container
 *            Container to hold provision section
 * @return Nothing
 */
function appendProvisionSection(plugin, container) {
	// Get provision tab ID
    var tabId = container.parents('.tab').attr('id');
    
    if (plugin == 'quick')    	
    	appendProvision4Url(container); // For provisioning based on argmunents found in URL
    else
    	appendProvision4NoUrl(plugin, container);
        
    // Add provision button
    var provisionBtn = createButton('Provision');
    provisionBtn.bind('click', function(){
    	provisionNode(tabId);
    });
    container.append(provisionBtn);
    
    // Bind image select to change event
    container.find('select[name=image]').bind('change', function() {
        createAdvancedOptions($(this).val(), tabId);
    });
    
    $.ajax({
        url : 'lib/cmd.php',
        dataType : 'json',
        data : {
            cmd : 'lsdef',
            tgt : '',
            args : '-t;osimage',
            msg : tabId
        },

        success : function(data){
            var tabId = data.msg;
            var i = 0;
            var imageName = 0;
            var position = 0;
            if (!data.rsp.length) {
                $('#' + tabId).prepend(createWarnBar('Please run copycds and genimage in provision page before continuing!'));
                return;
            }
            
            for (i in data.rsp) {
                imageName = data.rsp[i];
                position = imageName.indexOf(' ');
                imageName = imageName.substr(0, position);
                
                $('#' + tabId + ' select[name=image]').append($('<option value="' + imageName + '">' + imageName + '</option>'));
            }
            
            // Trigger select change event
            $('#' + tabId + ' select[name=image]').trigger('change');
            // Show provision button
            $('#' + tabId + ' button').show();
        }
    });
}

/**
 * Create provision node section using URL
 * 
 * @param container
 *            Container to hold provision section
 * @returns Nothing
 */
function appendProvision4Url(container){
	// Get provision tab ID
    var tabId = container.parents('.tab').attr('id');
    
	// Create node fieldset
	var nodeFS = $('<fieldset></fieldset>');
	var nodeLegend = $('<legend>Node</legend>');
	nodeFS.append(nodeLegend);
	container.append(nodeFS);
	
	var nodeAttr = $('<div style="display: inline-table; vertical-align: middle; width: 85%; margin-left: 10px;"></div>');
	nodeFS.append($('<div style="display: inline-table; vertical-align: middle;"><img src="images/provision/computer.png"></img></div>'));
	nodeFS.append(nodeAttr);
	
	// Create image fieldset
	var imgFS = $('<fieldset></fieldset>');
	var imgLegend = $('<legend>Image</legend>');
	imgFS.append(imgLegend);
	container.append(imgFS);
	
	var imgAttr = $('<div style="display: inline-table; vertical-align: middle;"></div>');
	imgFS.append($('<div style="display: inline-table; vertical-align: middle;"><img src="images/provision/operating_system.png"></img></div>'));
	imgFS.append(imgAttr);
	
    var query = window.location.search;
    var args = query.substr(1).split('&');
    var parms = new Object();
    var tmp;
    
    // Turn URL arguments into hash array
    for (var i = 0; i < args.length; i++) {
        tmp = args[i].split('=');
        parms[tmp[0]] = tmp[1];
    }
    
    var master = '';
    if (parms['master'])
    	master = parms['master'];
    
    var nfsserver = '';
    if (parms['nfsserver'])
    	nfsserver = parms['nfsserver'];
    
    var tftpserver = '';
    if (parms['tftpserver'])
    	tftpserver = parms['tftpserver'];
    
    nodeAttr.append('<div><label>Node:</label><input type="text" disabled="disabled" name="node" value="' + parms['nodes'] + '"></div>');
    
    imgAttr.append('<div><label>Architecture:</label><input type="text" disabled="disabled" name="arch" value="' + parms['arch'] + '"></div>');
    imgAttr.append('<div><label>Image name:</label><select name="image"></select></div>');
    imgAttr.append( '<div><label>Install NIC:</label><input type="text" name="installNic"/></div>');
    imgAttr.append('<div><label>Primary NIC:</label><input type="text" name="primaryNic"/></div>');   
    imgAttr.append('<div><label>xCAT master:</label><input type="text" name="xcatMaster" value="' + master + '"></div>');
    imgAttr.append('<div><label>TFTP server:</label><input type="text" name="tftpServer" value="' + tftpserver + '"></div>');
    imgAttr.append('<div><label>NFS server:</label><input type="text" name="nfsServer" value="' + nfsserver + '"></div>');
    
    return;
}

/**
 * Create section to provision node using no URL
 * 
 * @param plugin
 * 			  Create provision section for given plugin
 * @param container
 *            Container to hold provision section
 * @returns Nothing
 */
function appendProvision4NoUrl(plugin, container){
	// Get provision tab ID
    var tabId = container.parents('.tab').attr('id');
    
	// Create node fieldset
	var nodeFS = $('<fieldset></fieldset>');
	var nodeLegend = $('<legend>Node</legend>');
	nodeFS.append(nodeLegend);
	container.append(nodeFS);
	
	var nodeAttr = $('<div style="display: inline-table; vertical-align: middle; width: 85%; margin-left: 10px;"></div>');
	nodeFS.append($('<div style="display: inline-table; vertical-align: middle;"><img src="images/provision/computer.png"></img></div>'));
	nodeFS.append(nodeAttr);
	
	// Create image fieldset
	var imgFS = $('<fieldset></fieldset>');
	var imgLegend = $('<legend>Image</legend>');
	imgFS.append(imgLegend);
	container.append(imgFS);
	
	var imgAttr = $('<div style="display: inline-table; vertical-align: middle;"></div>');
	imgFS.append($('<div style="display: inline-table; vertical-align: middle;"><img src="images/provision/operating_system.png"></img></div>'));
	imgFS.append(imgAttr);
	
	// Select group name
    var group = $('<div></div>').append('<label>Group:</label>');
    var groupSelect = $('<select name="group"></select>');
    group.append(groupSelect);
    var groupNames = $.cookie('groups');
    if (groupNames) {
        var tmp = groupNames.split(',');
        groupSelect.append('<option value=""></option>'); // Append empty group name
        for (var i in tmp)
        	groupSelect.append('<option value="' + tmp[i] + '">' + tmp[i] + '</option>');
    }
    nodeAttr.append(group);

    // Select node from table
    var nodes = $('<div><label style="vertical-align: top;">Nodes:</label></div>');
	var nodesTable = $('<div id="nodesTable" style="display: inline-block; max-width: 800px;"><p>Select a group to view its nodes</p></div>');
	nodes.append(nodesTable);
	nodeAttr.append(nodes);
	
    // Select architecture
    var arch = $('<div></div>').append('<label>Architecture:</label>');    
    var archName = $.cookie('osarchs');
    if (archName) {
    	var archSelect = $('<select name="arch"></select>');
    	arch.append(archSelect);
    	
        var tmp = archName.split(',');
        for (var i in tmp)
        	archSelect.append('<option value="' + tmp[i] + '">' + tmp[i] + '</option>');
    } else {
        arch.append('<input type="text" name="arch"/>');
    }
    imgAttr.append(arch);

    imgAttr.append('<div><label>Image name:</label><select name="image"></select></div>');
    imgAttr.append('<div><label>Install NIC:</label><input type="text" name="installNic"/></div>');
    imgAttr.append('<div><label>Primary NIC:</label><input type="text" name="primaryNic"/></div>');
    imgAttr.append('<div><label>xCAT master:</label><input type="text" name="xcatMaster"/></div>');
    imgAttr.append('<div><label>TFTP server:</label><input type="text" name="tftpServer"/></div>');
    imgAttr.append('<div><label>NFS server:</label><input type="text" name=nfsServer"/></div>');
    
    // When a group is selected, show the nodes belonging to that group
    groupSelect.bind('change', function() {
        var nodesTableId = '#' + tabId + ' #nodesTable';
        $(nodesTableId).append(createLoader());
        createNodesTable($(this).val(), nodesTableId);
    });
    
    return;
}

/**
 * Provision node
 * 
 * @param tabId
 * 			  Provision tab ID
 * @return Nothing
 */
function provisionNode(tabId) {
	var plugin = tabId;
    var errorMessage = "";
    var args = new Array();
    var node = "";
    
    // Delete any existing warnings
    $('#' + tabId + ' .ui-state-error').remove();
    
    // Go through each input
    $('#' + tabId + ' input[type!="checkbox"]').each(function() {
        if (!$(this).val()) {
            errorMessage = 'Please provide a value for each missing field!';
            return false;
        } else {
            args.push($(this).val());
        }
    });
    
    // Do not continue if error was found
    if (errorMessage) {
        $('#' + tabId).prepend(createWarnBar(errorMessage));
        return;
    }
    
    // If jumped from nodes page, get node name
    if (tabId == 'quick') {
        node = args.shift();
    } else {
    	// Select platform, get node names from table checkbox
        args.unshift($('#' + tabId + ' input[name=arch]').val());
        node = getCheckedByObj($('#' + tabId + ' #nodesTable'));
    }
    
    // Do not continue if a node is not given
    if (!node) {
        $('#' + tabId).prepend(createWarnBar('Please select a node!'));
        return;
    }
    
    var software = getCheckedByObj($('#' + tabId + ' #advanced'));
    var imageName = $('#' + tabId + ' select[name=image]').val();
    var provision = args.join(',');
    
    var url = 'lib/cmd.php?cmd=webrun&tgt=&args=provision;' + 
    	node + ';' + imageName + ';' + provision + ';' + software + '&msg=&opts=flush';
    $('#' + tabId).prepend(createIFrame(url));
}

/**
 * Create advance option
 * 
 * @param imagename
 * 			Image name
 * @param outId
 * 			Output area ID
 * @return Nothing
 */
function createAdvancedOptions(image, outId) {
    $.ajax({
        url : 'lib/cmd.php',
        dataType : 'json',
        data : {
            cmd : 'lsdef',
            tgt : '',
            args : '-t;osimage;' + image + ';-i;osname,provmethod',
            msg : outId
        },

        success : function(data) {
            var outId = data.msg;
            var osName = '';
            var provMethod = '';
            var tmpStr = '';
            var position = 0;
            
            for (var i = 0; i < data.rsp.length; i++) {
                tmpStr = data.rsp[i];
                if (tmpStr.indexOf('osname') != -1) {
                    position = tmpStr.indexOf('=');
                    osName = tmpStr.substr(position + 1);
                }
                
                if (tmpStr.indexOf('provmethod') != -1) {
                    position = tmpStr.indexOf('=');
                    provMethod = tmpStr.substr(position + 1);
                }
            }
            
            $('#' + outId + ' #advanced').remove();
            if (osName.toLowerCase() == 'aix')
                return;
            
            if (provMethod == 'install') {
            	// Create advanced fieldset
            	var advancedFS = $('<fieldset id="advanced"></fieldset>').append($('<legend>Advanced</legend>'));
            	$('#' + outId + ' div.form fieldset:eq(1)').after(advancedFS);
            	 
            	advancedFS.append('<div><input type="checkbox" checked="checked" name="ganglia">Install Ganglia monitoring</div>');
        	}
    	}
    });
}

/**
 * Create nodes table
 * 
 * @param group
 * 			Group name
 * @param outId
 * 			Output section ID
 * @return Nothing
 */
function createNodesTable(group, outId) {	
    // Get group nodes
    $.ajax({
        url : 'lib/cmd.php',
        dataType : 'json',
        data : {
            cmd : 'nodels',
            tgt : group,
            args : '',
            msg : outId
        },

        success : function(data) {
            var outId = $(data.msg);
            var nodes = data.rsp;
            
            // Create table to hold nodes
            var nTable = $('<table></table>');
            var tHead = $('<thead class="ui-widget-header"> <th><input type="checkbox" onclick="selectAll4Table(event, $(this))"></th> <th>Node</th> </thead>');
            nTable.append(tHead);
            var tBody = $('<tbody></tbody>');
            nTable.append(tBody);
            
            for (var i in nodes) {
                var node = nodes[i][0];
                
                // Go to next node if there is nothing here
                if (!node)
                    continue;
                // Insert node into table
                tBody.append('<tr><td><input type="checkbox" name="' + node + '"/></td><td>' + node + '</td></tr>');
            }
            
            outId.empty().append(nTable);
            
            if (nodes.length > 10)
            	outId.css('height', '300px');
            else
            	outId.css('height', 'auto');
        }
    });
}

/**
 * Get select element names
 * 
 * @param obj
 * 			Object to get selected element names
 * @return Nodes name seperate by a comma
 */
function getCheckedByObj(obj) {
    var str = '';
    
    // Get nodes that were checked
    obj.find('input:checked').each(function() {
        if ($(this).attr('name')) {
            str += $(this).attr('name') + ',';
        }
    });

    if (str) {
        str = str.substr(0, str.length - 1);
    }

    return str;
}

/**
 * Select all checkboxes in the table
 * 
 * @param event
 *            Event on element
 * @param obj
 *            Object triggering event
 * @return Nothing
 */
function selectAll4Table(event, obj) {
	// Get datatable ID
	// This will ascend from <input> <td> <tr> <thead> <table>
	var tableObj = obj.parents('table').find('tbody');
	var status = obj.attr('checked');
	tableObj.find(' :checkbox').attr('checked', status);
	event.stopPropagation();
}