<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2016 The Cacti Group                                 |
 |                                                                         |
 | This program is free software; you can redistribute it and/or           |
 | modify it under the terms of the GNU General Public License             |
 | as published by the Free Software Foundation; either version 2          |
 | of the License, or (at your option) any later version.                  |
 |                                                                         |
 | This program is distributed in the hope that it will be useful,         |
 | but WITHOUT ANY WARRANTY; without even the implied warranty of          |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           |
 | GNU General Public License for more details.                            |
 +-------------------------------------------------------------------------+
 | Cacti: The Complete RRDTool-based Graphing Solution                     |
 +-------------------------------------------------------------------------+
 | This code is designed, written, and maintained by the Cacti Group. See  |
 | about.php and/or the AUTHORS file for specific developer information.   |
 +-------------------------------------------------------------------------+
 | http://www.cacti.net/                                                   |
 +-------------------------------------------------------------------------+
*/

include('./include/auth.php');
include_once('./lib/utility.php');
include_once('./lib/api_graph.php');
include_once('./lib/api_tree.php');
include_once('./lib/api_data_source.php');
include_once('./lib/api_aggregate.php');
include_once('./lib/template.php');
include_once('./lib/html_tree.php');
include_once('./lib/html_form_template.php');
include_once('./lib/rrd.php');
include_once('./lib/data_query.php');

aggregate_prune_graphs();

$graph_actions = array(
	1 => __('Delete'),
	2 => __('Migrate Aggregate to use a Template'),
	3 => __('Create New Aggregate from Aggregates')
);

$agg_item_actions = array(
	10 => __('Associate with Aggregate'),
	11 => __('Disassociate with Aggregate')
);

/* set default action */
set_default_action();

switch (get_request_var('action')) {
	case 'save':
		form_save();
		break;
	case 'actions':
		form_actions();
		break;
	case 'edit':
		top_header();
		graph_edit();
		bottom_footer();
		break;
	default:
		top_header();
		aggregate_graph();
		bottom_footer();
		break;
}

function add_tree_names_to_actions_array() {
	global $graph_actions;

	/* add a list of tree names to the actions dropdown */
	$trees = db_fetch_assoc('SELECT id,name FROM graph_tree ORDER BY name');

	if (sizeof($trees)) {
		foreach ($trees as $tree) {
			$graph_actions{'tr_' . $tree['id']} = __('Place on a Tree (%s)', $tree['name']);
		}
	}
}

function form_save() {
	if (!isset_request_var('save_component_graph')) {
		header('Location: aggregate_graphs.php?header=false&action=edit&id=' . get_nfilter_request_var('id'));
		return null;
	}

	/* remember some often used values */
	$local_graph_id        = get_nfilter_request_var('local_graph_id', 0);
	$graph_template_id     = get_nfilter_request_var('graph_template_id', 0);
	$aggregate_template_id = get_nfilter_request_var('aggregate_template_id', 0);
	$graph_title           = form_input_validate(get_nfilter_request_var('title_format'), 'title_format', '', false, 3);
	if (is_error_message()) {
		raise_message(2);
		header('Location: aggregate_graphs.php?header=false&action=edit&id=' . $local_graph_id);
		return null;
	}

	/* get the aggregate graph id */
	$aggregate_graph_id  = db_fetch_cell_prepared('SELECT id 
		FROM aggregate_graphs 
		WHERE local_graph_id = ?', array($local_graph_id));

	/* if user disabled template propagation we need to get graph data from form */
	if (!isset_request_var('template_propogation')) {
		$aggregate_template_id = 0;
		$new_data = aggregate_validate_graph_params($_POST, false);
	} else {
		$new_data = array();
	}

	if (is_error_message()) {
		raise_message(2);
		header('Location: aggregate_graphs.php?header=false&action=edit&id=' . $local_graph_id);
		return null;
	}

	/* save graph data to cacti tables */
	$graph_templates_graph_id = aggregate_graph_templates_graph_save(
		$local_graph_id,
		$graph_template_id,
		$graph_title,
		$aggregate_template_id,
		$new_data
	);

	/* update title in aggregate graphs table */
	db_execute_prepared('UPDATE aggregate_graphs 
		SET title_format = ?
		WHERE id = ?', 
		array($graph_title, $aggregate_graph_id));

	/* next lets see if any of the aggregate has changed and save as applicable
	 * if the graph is templates, we can simply ignore.  A simple check will
	 * determine if aggregation propagation is enabled
	 */
	if (!isset_request_var('template_propogation')) {
		/* template propagation is disabled */
		$save                         = array();
		$save['id']                   = $aggregate_graph_id;
		$save['template_propogation'] = '';
		$save['gprint_prefix']        = get_nfilter_request_var('gprint_prefix');
		$save['total_prefix']         = get_nfilter_request_var('total_prefix');

		$save['total']                = get_filter_request_var('total');
		$save['graph_type']           = get_filter_request_var('graph_type');
		$save['total_type']           = get_filter_request_var('total_type');
		$save['order_type']           = get_filter_request_var('order_type');

		/* see if anything changed, if so, we will have to push out the aggregate */
		if (!empty($aggregate_graph_id)) {
			$old = db_fetch_row_prepared('SELECT * 
				FROM aggregate_graphs 
				WHERE id = ?', 
				array($aggregate_graph_id));

			$save_me = 0;

			$save_me += ($old['template_propogation'] != $save['template_propogation']);
			$save_me += ($old['gprint_prefix']        != $save['gprint_prefix']);
			$save_me += ($old['graph_type']           != $save['graph_type']);
			$save_me += ($old['total']                != $save['total']);
			$save_me += ($old['total_type']           != $save['total_type']);
			$save_me += ($old['total_prefix']         != $save['total_prefix']);
			$save_me += ($old['order_type']           != $save['order_type']);

			if ($save_me) {
				$aggregate_graph_id = sql_save($save, 'aggregate_graphs');
			}

			/* save the template items now */
			/* get existing item ids and sequences from graph template */
			$graph_templates_items = array_rekey(
				db_fetch_assoc_prepared('SELECT id, sequence 
					FROM graph_templates_item 
					WHERE local_graph_id=0 
					AND graph_template_id = ?', array($graph_template_id)),
				'id', array('sequence')
			);
			/* get existing aggregate template items */
			$aggregate_graph_items_old = array_rekey(
				db_fetch_assoc_prepared('SELECT * 
					FROM aggregate_graphs_graph_item 
					WHERE aggregate_graph_id = ?', array($aggregate_graph_id)),
				'graph_templates_item_id', array('aggregate_graph_id', 'graph_templates_item_id', 'sequence', 'color_template', 't_graph_type_id', 'graph_type_id', 't_cdef_id', 'cdef_id', 'item_skip', 'item_total')
			);

			/* update graph template item values with posted values */
			aggregate_validate_graph_items($_POST, $graph_templates_items);

			$items_changed = false;
			$items_to_save = array();
			foreach($graph_templates_items as $item_id => $data) {
				$item_new = array();
				$item_new['aggregate_graph_id'] = $aggregate_graph_id;
				$item_new['graph_templates_item_id'] = $item_id;

				$item_new['color_template'] = isset($data['color_template']) ? $data['color_template']:0;
				$item_new['item_skip']      = isset($data['item_skip']) ? 'on':'';
				$item_new['item_total']     = isset($data['item_total']) ? 'on':'';
				$item_new['sequence']       = isset($data['sequence']) ? $data['sequence']:-1;

				/* compare with old item to see if we need to push out. */
				if (!isset($aggregate_graph_items_old[$item_id])) {
					/* this item does not yet exist */
					$items_changed = true;
				} else {
					/* compare data from user to data from DB */
					foreach ($item_new as $field => $new_value) {
						if ($aggregate_graph_items_old[$item_id][$field] != $new_value) {
							$items_changed = true;
						}
					}
					/* fill in missing fields with db values */
					$item_new = array_merge($aggregate_graph_items_old[$item_id], $item_new);
				}
				$items_to_save[] = $item_new;
			}

			if ($items_changed) {
				aggregate_graph_items_save($items_to_save, 'aggregate_graphs_graph_item');

			}

			if ($save_me || $items_changed) {
				push_out_aggregates(0, $local_graph_id);
			}
		}
	}

	raise_message(1);

	header('Location: aggregate_graphs.php?header=false&action=edit&id=' . $local_graph_id);
}

/* ------------------------
    The "actions" function
   ------------------------ */

function form_actions() {
	global $graph_actions, $agg_item_actions;

	/* ================= input validation ================= */
	get_filter_request_var('drp_action', FILTER_VALIDATE_REGEXP, array('options' => array('regexp' => '/^([a-zA-Z0-9_]+)$/')));
	/* ==================================================== */

	/* we are performing two set's of actions here */
	$graph_actions += $agg_item_actions;

	/* if we are to save this form, instead of display it */
	if (isset_request_var('selected_items')) {
		$selected_items = sanitize_unserialize_selected_items(get_nfilter_request_var('selected_items'));

		if ($selected_items != false) {
			if (get_request_var('drp_action') == '1') { /* delete */
				api_aggregate_remove_multi($selected_items);
			}elseif (get_request_var('drp_action') == '2') { /* migrate to template */
				api_aggregate_convert_template($selected_items);
			}elseif (get_request_var('drp_action') == '3') { /* create aggregate from aggregate */
				$aggregate_name = get_request_var('aggregate_name');
				api_aggregate_create($aggregate_name, $selected_items);
			}elseif (get_request_var('drp_action') == '10') { /* associate with aggregate */
				api_aggregate_associate($selected_items);
			}elseif (get_request_var('drp_action') == '11') { /* dis-associate with aggregate */
				api_aggregate_disassociate($selected_items);
			}elseif (preg_match('/^tr_([0-9]+)$/', get_request_var('drp_action'), $matches)) { /* place on tree */
				get_filter_request_var('tree_id');
				get_filter_request_var('tree_item_id');
				for ($i=0;($i<count($selected_items));$i++) {
					api_tree_item_save(0, get_nfilter_request_var('tree_id'), TREE_ITEM_TYPE_GRAPH, get_nfilter_request_var('tree_item_id'), '', $selected_items[$i], 0, 0, 0, false);
				}
			}
		}

		header('Location: aggregate_graphs.php?header=false');
		exit;
	}

	/* setup some variables */
	$graph_list = ''; $i = 0;

	/* loop through each of the graphs selected on the previous page and get more info about them */
	while (list($var,$val) = each($_POST)) {
		if (preg_match('/^chk_([0-9]+)$/', $var, $matches)) {
			/* ================= input validation ================= */
			input_validate_input_number($matches[1]);
			/* ==================================================== */

			$graph_list .= '<li>' . get_graph_title($matches[1]) . '</li>';
			$graph_array[$i] = $matches[1];

			$i++;
		}
	}

	top_header();

	/* add a list of tree names to the actions dropdown */
	add_tree_names_to_actions_array();

	form_start('aggregate_graphs.php');

	html_start_box($graph_actions{get_request_var('drp_action')}, '60%', '', '3', 'center', '');

	if (isset($graph_array) && sizeof($graph_array)) {
		if (get_request_var('drp_action') == '1') { /* delete */
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to delete the following Aggregate Graph(s).') . "</p>
					<div class='itemlist'><ul>$graph_list</ul></div>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Delete Graph(s)') . "'>";
		}elseif (get_request_var('drp_action') == '2') { /* migrate to aggregate */
			/* determine the common graph template if any */
			reset($_POST);
			while (list($var,$val) = each($_POST)) {
				if (preg_match('/^chk_([0-9]+)$/', $var, $matches)) {
					$local_graph_ids[] = $matches[1];
				}
			}
			$lgid = implode(',',$local_graph_ids);

			/* for whatever reason,  subquery performance in mysql is sub-optimal.  Therefore, let's do this
			 * as a few queries instead.
			 */
			$task_items = array_rekey(db_fetch_assoc("SELECT DISTINCT task_item_id 
				FROM graph_templates_item 
				WHERE local_graph_id IN($lgid)"), 'task_item_id', 'task_item_id');

			$task_items = implode(',', $task_items);

			$graph_templates = db_fetch_assoc("SELECT DISTINCT graph_template_id 
				FROM graph_templates_item
				WHERE task_item_id IN ($task_items) AND graph_template_id>0");

			if (sizeof($graph_templates) > 1) {
				print "<tr>
					<td class='textArea'>
						<p>" . __('The selected Aggregate Graphs represent elements from more than one Graph Template.') . "</p>
						<p>" . __('In order to migrate the Aggregate Graphs below to a Template based Aggregate, they must only be using one Graph Template.  Please press \'Return\' and then select only Aggregate Graph that utilize the same Graph Template.') . "</p>
						<div class='itemlist'><ul>$graph_list</ul></div>
					</td>
				</tr>\n";

				$save_html = "<input type='button' value='" . __('Return') . "' onClick='cactiReturnTo()'>";
			}else{
				$graph_template      = $graph_templates[0]['graph_template_id'];

				$aggregate_templates = db_fetch_assoc_prepared('SELECT id, name 
					FROM aggregate_graph_templates 
					WHERE graph_template_id = ? 
					ORDER BY name', 
					array($graph_template));

				if (sizeof($aggregate_templates)) {
					print "<tr>
						<td class='textArea' colspan='2'>
							<p>" . __('Click \'Continue\' and the following Aggregate Graph(s) will be migrated to use the Aggregate Template that you choose below.') . "</p>
							<div class='itemlist'><ul>$graph_list</ul></div>
						</td>
					</tr>\n";

					print "<tr>
						<td class='textArea' width='170'>" . __('Aggregate Template:') . "</td>
						<td>
							<select name='aggregate_template_id'>\n";

					html_create_list($aggregate_templates, 'name', 'id', $aggregate_templates[0]['id']);

					print "</select>
						</td>
					</tr>\n";

					$save_html = "<tr><td colspan='2' align='right'><input type='button' value='" . __('Cancel'). "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Delete Graph(s)') . "'></td></tr>";
				}else{
					print "<tr>
						<td class='textArea'>
							<p>" . __('There are currently no Aggregate Templates defined for the selected Legacy Aggregates.') . "</p>
							<p>" . __('In order to migrate the Aggregate Graphs below to a Template based Aggregate, first create an Aggregate Template for the Graph Template \'%s\'.', db_fetch_cell_prepared('SELECT name FROM graph_templates WHERE id = ?', array($graph_template))) . "</p>
							<p>" . __('Please press \'Return\' to continue.') . "</p>
							<div class='itemlist'><ul>$graph_list</ul></div>
						</td>
					</tr>\n";

					$save_html = "<input type='button' value='" . __('Return') . "' onClick='cactiReturnTo()'>";
				}
			}
		}elseif (get_request_var('drp_action') == '3') { /* create aggregate from aggregates */
			print "<tr>
				<td colspan='2' class='textArea'>
					<p>" . __('Click \'Continue\' to combined the following Aggregate Graph(s) into a single Aggregate Graph.') . "</p>
					<div class='itemlist'><ul>$graph_list</ul></div>
				</td>
			</tr>\n";

			print "	<tr><td class='textArea' width='170'>" . __('Aggregate Name:') . "</td></tr>\n";
			print "	<tr><td class='textArea'><input name='aggregate_name' size='40' value='" . __('New Aggregate') . "'></td></tr>\n";

			$save_html = "<input type='button' value='" . __('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Delete Graph(s)') . "'>";
		}elseif (get_request_var('drp_action') == '10') { /* associate with aggregate */
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to associate the following Graph(s) with the Aggregate Graph.') . "</p>
					<div class='itemlist'><ul>$graph_list</ul></div>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Associate Graph(s)') . "'>";
		}elseif (get_request_var('drp_action') == '11') { /* dis-associate with aggregate */
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to disassociate the following Graph(s) from the Aggregate.') . "</p>
					<div class='itemlist'><ul>$graph_list</ul></div>
				</td>
			</tr>\n";

			$save_html = "<input type='button' value='" . __('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Dis-Associate Graph(s)') . "'>";
		}elseif (preg_match("/^tr_([0-9]+)$/", get_request_var('drp_action'), $matches)) { /* place on tree */
			print "<tr>
				<td class='textArea'>
					<p>" . __('Click \'Continue\' to place the following Aggregate Graph(s) under the Tree Branch.') . "</p>
					<div class='itemlist'><ul>$graph_list</ul></div>
					<p>" . __('Destination Branch:') . "<br>"; grow_dropdown_tree($matches[1], "tree_item_id", "0"); print "</p>
				</td>
			</tr>\n
			<input type='hidden' name='tree_id' value='" . $matches[1] . "'>\n";

			$save_html = "<input type='button' value='" . __('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __('Continue') . "' title='" . __('Place Graph(s) on Tree') . "'>";
		}
	}else{
		print "<tr><td class='even'><span class='textError'>" . __('You must select at least one graph.') . "</span></td></tr>\n";
		$save_html = "<input type='button' value='" . __('Return') . "' onClick='cactiReturnTo()'>";
	}

	print "	<tr>
		<td class='saveRow'>
			<input type='hidden' name='action' value='actions'>
			<input type='hidden' name='local_graph_id' value='" . (isset_request_var('local_graph_id') ? get_nfilter_request_var('local_graph_id'):0) . "'>
			<input type='hidden' name='selected_items' value='" . (isset($graph_array) ? serialize($graph_array) : '') . "'>
			<input type='hidden' name='drp_action' value='" . get_request_var('drp_action') . "'>
			$save_html
		</td>
	</tr>\n";

	html_end_box(false);

	form_end();

	bottom_footer();
}

/* -----------------------
    item - Graph Items
   ----------------------- */

function item() {
	global $consolidation_functions, $graph_item_types, $struct_graph_item;

	/* ================= input validation ================= */
	get_filter_request_var('id');
	/* ==================================================== */

	if (isempty_request_var('id')) {
		$template_item_list = array();

		$header_label = __('Graph Items [new]');
	}else{
		$template_item_list = db_fetch_assoc_prepared('SELECT
			gti.id, gti.text_format, gti.value, gti.hard_return, gti.graph_type_id,
			gti.consolidation_function_id, dtr.data_source_name, gti.alpha,
			cdef.name AS cdef_name, colors.hex
			FROM graph_templates_item AS gti
			LEFT JOIN data_template_rrd AS dtr ON (gti.task_item_id=dtr.id)
			LEFT JOIN data_local AS dl ON (dtr.local_data_id=dl.id)
			LEFT JOIN data_template_data AS dtd ON (dl.id=dtd.local_data_id)
			LEFT JOIN cdef ON (gti.cdef_id=cdef.id)
			LEFT JOIN colors ON (gti.color_id=colors.id)
			WHERE gti.local_graph_id = ?
			ORDER BY gti.sequence', 
			array(get_request_var('id')));

		$header_label = __('Graph Items [edit: %s]', htmlspecialchars(get_graph_title(get_request_var('id'))));
	}

	$graph_template_id = db_fetch_cell_prepared('SELECT graph_template_id 
		FROM graph_local 
		WHERE id = ?', array(get_request_var('id')));

	if (empty($graph_template_id)) {
		$add_text = 'aggregate_items.php?action=item_edit&local_graph_id=' . get_request_var('id');
	}else{
		$add_text = '';
	}

	html_start_box($header_label, '100%', '', '3', 'center', $add_text);
	draw_graph_items_list($template_item_list, 'aggregate_items.php', 'local_graph_id=' . get_request_var('id') , (empty($graph_template_id) ? false : true));
	html_end_box(false);
}

/* ------------------------------------
    graph - Graphs
   ------------------------------------ */

function graph_edit() {
	global $config, $struct_graph, $struct_aggregate_graph, $image_types, $consolidation_functions, $graph_item_types, $struct_graph_item;

	/* ================= input validation ================= */
	get_filter_request_var('id');
	/* ==================================================== */

	/* purge any old graphs */
	aggregate_prune_graphs(get_request_var('id'));

	if (isset_request_var('reset')) {
		$_SESSION['aggregate_referer'] = 'aggregate_graphs.php';
	}elseif (isset($_SERVER['HTTP_REFERER']) && !substr_count($_SERVER['HTTP_REFERER'], 'aggregate_graphs.php')) {
		$_SESSION['aggregate_referer'] = $_SERVER['HTTP_REFERER'];
	}elseif (isset($_SERVER['HTTP_REFERER']) && !isset($_SESSION['aggregate_referer'])) {
		$_SESSION['aggregate_referer'] = $_SERVER['HTTP_REFERER'];
	}
	$referer = $_SESSION['aggregate_referer'];

	$use_graph_template = false;
	$aginfo = array();
	$graphs = array();
	if (!isempty_request_var('id')) {
		$graphs = db_fetch_row_prepared('SELECT * 
			FROM graph_templates_graph 
			WHERE local_graph_id = ?', 
			array(get_request_var('id')));

		$aginfo = db_fetch_row_prepared('SELECT * 
			FROM aggregate_graphs 
			WHERE local_graph_id = ?',
			array($graphs['local_graph_id']));

		$header_label = '[edit: ' . htmlspecialchars(get_graph_title(get_request_var('id'))) . ']';
	}

	if (sizeof($aginfo)) {
		if ($aginfo['aggregate_template_id'] > 0) {
			$template = db_fetch_row_prepared('SELECT * 
				FROM aggregate_graph_templates 
				WHERE id = ?', 
				array($aginfo['aggregate_template_id']));
		}else{
			$template = $aginfo;
		}

		$aggregate_tabs = array('details' => __('Details'), 'items' => __('Items'), 'preview' => __('Preview'));
	}else{
		$template = array();
		$aggregate_tabs = array('details' => __('Details'), 'preview' => __('Preview'));
	}

	/* ================= input validation and session storage ================= */
	$filters = array(
		'tab' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'details', 
			'options' => array('options' => 'sanitize_search_string')
		)
	);

	validate_store_request_vars($filters, 'sess_aggregate');
	/* ================= input validation ================= */

	$current_tab = get_request_var('tab');

	/* draw the categories tabs on the top of the page */
	print "<table class='tabs' width='100%' align='center'>\n";
	print "<tr><td width='100%' id='tabs' valign='bottom'><div class='aggtabs'><nav><ul role='tablist'>\n";

	$i = 0;
	if (sizeof($aggregate_tabs)) {
		foreach (array_keys($aggregate_tabs) as $tab_short_name) {
			if ($tab_short_name == 'details' || (!isempty_request_var('id'))) {
				print "<li role='tab' tabindex='$i' aria-controls='tabs-" . ($i+1) . "'><a tabindex='-1' role='presentation' class='tab " . ($tab_short_name == $current_tab ? "selected'" : "'") . 
					" href='" . htmlspecialchars($config['url_path'] . 'aggregate_graphs.php?action=edit&id=' . get_request_var('id') . "&tab=$tab_short_name") . "'>" . $aggregate_tabs[$tab_short_name] . "</a></li>\n";
			}

			$i++;
		}
	}
	print "</ul></nav></div></td>\n";

	/* handle debug mode */
	if (isset_request_var('debug')) {
		if (get_filter_request_var('debug') == '0') {
			kill_session_var('graph_debug_mode');
		}elseif (get_filter_request_var('debug') == '1') {
			$_SESSION['graph_debug_mode'] = true;
		}
	}

	if (isset($_SESSION['graph_debug_mode'])) {
		$message = __('Turn Off Graph Debug Mode');
	}else{
		$message = __('Turn On Graph Debug Mode');
	}

	if (!isempty_request_var('id') && $current_tab == 'preview') {
		print "<td id='tabs' class='nowrap' align='right'><a class='hyperLink textHeader' href='" . htmlspecialchars('aggregate_graphs.php?action=edit&id=' . get_request_var('id') . '&tab=' . get_request_var('tab') .  '&debug=' . (isset($_SESSION['graph_debug_mode']) ? '0' : '1')) . "'>" . $message . "</a></td>\n</tr></table>\n";
	}elseif (!isempty_request_var('id') && $current_tab == 'details' && (!sizeof($template))) {
		print "<td id='tabs class='nowrap right'><a id='toggle_items' class='textHeader' href='#'>" . __('Show Item Details') . "</a></td>\n</tr></table>\n";
	}else{
		print "<td align='right'></td>\n</tr></table>\n";
	}

	if (!isempty_request_var('id') && $current_tab == 'preview') {
		html_start_box(__('Aggregate Preview %s', $header_label), '100%', '', '3', 'center', '');
		?>
		<tr class='even'>
			<td align='center' class='textInfo' colspan='2'>
				<img src='<?php print htmlspecialchars($config['url_path'] . 'graph_image.php?action=edit&disable_cache=1&local_graph_id=' . get_request_var('id') . '&rra_id=' . read_user_setting('default_rra_id'));?>' alt=''>
			</td>
			<?php
			if (isset($_SESSION['graph_debug_mode']) && isset_request_var('id')) {
				$graph_data_array['output_flag'] = RRDTOOL_OUTPUT_STDERR;
				$graph_data_array['print_source'] = 1;
				?>
				<td>
					<div style='overflow:auto;'>
					<span class='textInfo'><?php print __('RRDTool Command:');?></span><br>
					<pre class='monoSpace'><?php print @rrdtool_function_graph(get_request_var('id'), 1, $graph_data_array);?></pre>
					<span class='textInfo'><?php print __('RRDTool Says:');?></span><br>
					<?php unset($graph_data_array['print_source']);?>
					<pre class='monoSpace'><?php print @rrdtool_function_graph(get_request_var('id'), 1, $graph_data_array);?></pre>
					</div>
				</td>
				<?php
			}
			?>
		</tr>
		<?php
		html_end_box(false);
	}

	if (!isempty_request_var('id') && $current_tab == 'items') {
		aggregate_items();
		bottom_footer();
		exit;
	}

	form_start('aggregate_graphs.php', 'template_edit');

	/* we will show the templated representation only when when there is a template and propagation is enabled */
	if (!isempty_request_var('id') && $current_tab == 'details') {
		if (sizeof($template)) {
			print "<div id='templated'>";

			html_start_box(__('Aggregate Graph %s', $header_label), '100%', '', '3', 'center', '');

			/* add template propagation to the structure */
			draw_edit_form(
				array(
					'config' => array('no_form_tag' => true),
					'fields' => inject_form_variables($struct_aggregate_graph, (isset($aginfo) ? $aginfo : array()))
				)
			);

			html_end_box(false);

			if (isset($template)) {
				draw_aggregate_graph_items_list(0, $template['graph_template_id'], $aginfo);
			}

			form_hidden_box('id', (isset($template['id']) ? $template['id'] : '0'), '');
			form_hidden_box('save_component_template', '1', '');

			?>
			<script type='text/javascript'>

			var templated_selectors = [
				'#gprint_prefix',
				'#graph_type',
				'#total',
				'#total_type',
				'#total_prefix',
				'#order_type',

				'select[name^="agg_color"]',
				'input[name^="agg_total"]',
				'input[name^="agg_skip"]',

				'#image_format_id',
				'#height',
				'#width',
				'#slope_mode',
				'#auto_scale',
				'#auto_scale_opts',
				'#auto_scale_log',
				'#scale_log_units',
				'#auto_scale_rigid',
				'#auto_padding',
				'#export',
				'#upper_limit',
				'#lower_limit',
				'#base_value',
				'#unit_value',
				'#unit_exponent_value',

				'#alt_y_grid',
				'#right_axis',
				'#right_axis_label',
				'#right_axis_format',
				'#right_axis_formatter',
				'#left_axis_formatter',
				'#no_gridfit',
				'#unit_length',
				'#tab_width',
				'#dynamic_labels',
				'#force_rules_legend',
				'#legend_position',
				'#legend_direction',
				'#vertical_label'
			];

			$(function() {
				if ($('#template_propogation').is(':checked')) {
					for (var i = 0; i < templated_selectors.length; i++) {
						$(templated_selectors[i] ).prop('disabled', true);
					}
				}else{
					$('#row_template_propogation').hide();
					$('#row_spacer0').hide();
				}
			});

			$('#template_propogation').change(function() {
				if (!$('#template_propogation').is(':checked')) {
					for (var i = 0; i < templated_selectors.length; i++) {
						$( templated_selectors[i] ).prop('disabled', false);
					}
				}else{
					for (var i = 0; i < templated_selectors.length; i++) {
						$( templated_selectors[i] ).prop('disabled', true);
					}
				}
			});
			</script>
			<?php
			print '</div>';
		}

		/* we will show the classic representation only when we are not templating */
		print "<div id='classic'>";

		?>
		<input type='hidden' id='graph_template_graph_id' name='graph_template_graph_id' value='<?php print (isset($graphs) ? $graphs['id'] : '0');?>'>
		<input type='hidden' id='local_graph_template_graph_id' name='local_graph_template_graph_id' value='<?php print (isset($graphs) ? $graphs['local_graph_template_graph_id'] : '0');?>'>
		<?php

		/* graph item list goes here */
		if (empty($graphs['graph_template_id']) && sizeof($template) == 0) {
			item();
		}

		if (empty($graphs['graph_template_id'])) {
			html_start_box(__('Graph Configuration'), '100%', '', '3', 'center', '');

			$form_array = array();

			while (list($field_name, $field_array) = each($struct_graph)) {
				if ($field_array['method'] != 'spacer') {
					if ($field_name != 'title') {
						$form_array += array($field_name => $struct_graph[$field_name]);

						$form_array[$field_name]['value']   = (isset($graphs) ? $graphs[$field_name] : '');
						$form_array[$field_name]['form_id'] = (isset($graphs) ? $graphs['id'] : '0');
	
						if (!(($use_graph_template == false) || ($graphs_template{'t_' . $field_name} == 'on'))) {
							$form_array[$field_name]['method']      = 'template_' . $form_array[$field_name]['method'];
							$form_array[$field_name]['description'] = '';
						}
					}
				}else{
					$form_array += array($field_name => $struct_graph[$field_name]);
				}
			}

			draw_edit_form(
				array(
					'config' => array('no_form_tag' => true),
					'fields' => $form_array
				)
			);

			html_end_box(false);
		}

		form_hidden_box('save_component_graph','1','');
		form_hidden_box('save_component_input','1','');
		form_hidden_box('rrdtool_version', read_config_option('rrdtool_version'), '');
		form_save_button($referer, 'return', 'id');

		echo '</div>';

		?>
		<script type='text/javascript'>

		$().ready(function() {
			dynamic();
			if (!$('#templated')) {
				$('#local_graph_template_graph_id').next('table').css('display', 'none');
			}
		});

		$('#toggle_items').click(function() {
			if ($('#toggle_items').is(":contains('<?php print __('Show');?>')")) {
				$('#local_graph_template_graph_id').next('table').css('display', '');
				$('#toggle_items').text('<?php print __('Hide Item Details');?>');
			}else{
				$('#local_graph_template_graph_id').next('table').css('display', 'none');
				$('#toggle_items').text('<?php print __('Show Item Details');?>');
			}
		});

		function dynamic() {
			if ($('#scale_log_units')) {
				$('#scale_log_units').prop('disabled', true);
				if (($('#rrdtool_version').val() != 'rrd-1.0.x') &&
					($('#auto_scale_log').is(':checked'))) {
					$('#scale_log_units').prop('disabled', true);
				}
			}
		}

		function changeScaleLog() {
			if ($('#scale_log_units')) {
				$('#scale_log_units').prop('disabled', true);
				if (($('#rrdtool_version').val() != 'rrd-1.0.x') &&
					($('#auto_scale_log').is(':checked'))) {
					$('#scale_log_units').prop('disabled', false);
				}
			}
		}
		</script>
		<?php
	}
}

function aggregate_items() {
	global $agg_item_actions, $item_rows;

	/* ================= input validation and session storage ================= */
	$filters = array(
		'rows' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'pageset' => true,
			'default' => '-1'
			),
		'template_id' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'pageset' => true,
			'default' => '-1'
			),
		'filter' => array(
			'filter' => FILTER_CALLBACK, 
			'pageset' => true,
			'default' => '', 
			'options' => array('options' => 'sanitize_search_string')
			),
		'page' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'default' => '1'
			),
		'matching' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'on', 
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_column' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'title_cache', 
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_direction' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'ASC', 
			'options' => array('options' => 'sanitize_search_string')
			),
	);

	validate_store_request_vars($filters, 'sess_agraph_item');
	/* ================= input validation ================= */

	if (get_request_var('rows') == -1) {
		$rows = read_config_option('num_rows_table');
	}else{
		$rows = get_request_var('rows');
	}

	?>
	<script type='text/javascript'>

	function applyFilter() {
		strURL = 'aggregate_graphs.php?action=edit&tab=items&id='+$('#id').val();
		strURL += '&rows=' + $('#rows').val();
		strURL += '&page=' + $('#page').val();
		strURL += '&filter=' + $('#filter').val();
		strURL += '&matching=' + $('#matching').is(':checked');
		strURL += '&header=false';
		loadPageNoHeader(strURL);
	}

	function clearFilter() {
		strURL = 'aggregate_graphs.php?action=edit&tab=items&id='+$('#id').val()+'&clear=1&header=false';
		loadPageNoHeader(strURL);
	}

	$(function() {
		$('#refresh').click(function() {
			applyFilter();
		});

		$('#clear').click(function() {
			clearFilter();
		});

		$('#filter').change(function() {
			applyFilter();
		});

		$('#form_graphs').submit(function(event) {
			event.preventDefault();
			applyFilter();
		});
	});
	</script>
	<?php

	html_start_box(__('Matching Graphs'), '100%', '', '3', 'center', '');

	?>
	<tr class='even'>
		<td>
			<form id='form_graphs' action='aggregate_graphs.php'>
			<table class='filterTable'>
				<tr>
					<td>
						<?php print __('Search');?>
					</td>
					<td>
						<input type='text' id='filter' size='25' onChange='applyFilter()' value='<?php print htmlspecialchars(get_request_var('filter'));?>'>
					</td>
					<td>
						<?php print __('Graphs');?>
					</td>
					<td>
						<select id='rows' onChange='applyFilter()'>
							<option value='-1'<?php print (get_request_var('rows') == '-1' ? ' selected>':'>') . __('Default');?></option>
							<?php
							if (sizeof($item_rows) > 0) {
								foreach ($item_rows as $key => $value) {
									print "<option value='" . $key . "'"; if (get_request_var('rows') == $key) { print ' selected'; } print '>' . htmlspecialchars($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<input type='checkbox' id='matching' onChange='applyFilter()' <?php print (get_request_var('matching') == 'on' || get_request_var('matching') == 'true' ? ' checked':'');?>>
					</td>
					<td>
						<label for='matching'><?php print __('Part of Aggregate');?></label>
					</td>
					<td>
						<input id='refresh' type='button' value='<?php print __('Go');?>' title='<?php print __('Set/Refresh Filters');?>'>
					</td>
					<td>
						<input id='clear' type='button' onClick='clearFilter()' value='<?php print __('Clear');?>' title='<?php print __('Clear Filters');?>'>
					</td>
				</tr>
			</table>
			<input type='hidden' id='page' value='<?php print get_request_var('page');?>'>
			<input type='hidden' name='action' value='edit'>
			<input type='hidden' name='tab' value='items'>
			<input type='hidden' id='id' value='<?php print get_request_var('id');?>'>
			</form>
		</td>
	</tr>
	<?php

	html_end_box(false);

	/* form the 'where' clause for our main sql query */
	if (strlen(get_request_var('filter'))) {
		$filters = explode(' ', get_request_var('filter'));
		$sql_where = '';
		$sql_where = aggregate_make_sql_where($sql_where, $filters, 'gtg.title_cache');

		//$sql_where = "WHERE (gtg.title_cache LIKE '%%" . get_request_var("filter") . "%%')";
	}else{
		$sql_where = '';
	}

	if (get_request_var('matching') != 'false') {
		$sql_where .= (strlen($sql_where) ? ' AND':'WHERE') . ' (agi.local_graph_id IS NOT NULL)';
	}

	$graph_template = db_fetch_cell_prepared('SELECT graph_template_id
		FROM aggregate_graphs AS ag
		WHERE ag.local_graph_id = ?', 
		array(get_request_var('id')));

	$aggregate_id   = db_fetch_cell_prepared('SELECT id 
		FROM aggregate_graphs 
		WHERE local_graph_id = ?', 
		array(get_request_var('id')));

	if (!empty($graph_template)) {
		$sql_where .= (strlen($sql_where) ? ' AND':'WHERE') . "(gtg.graph_template_id=$graph_template)";
	}

	/* print checkbox form for validation */
	form_start('aggregate_graphs.php', 'chk');

	html_start_box('', '100%', '', '3', 'center', '');

	$total_rows = db_fetch_cell("SELECT COUNT(gtg.id) AS total
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		LEFT JOIN (SELECT DISTINCT local_graph_id FROM aggregate_graphs_items) AS agi
		ON gtg.local_graph_id=agi.local_graph_id
		$sql_where");

	$graph_list = db_fetch_assoc("SELECT
		gtg.id, gtg.local_graph_id, gtg.height, gtg.width, gtg.title_cache, agi.local_graph_id AS agg_graph_id
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		LEFT JOIN (
			SELECT DISTINCT local_graph_id
			FROM aggregate_graphs_items
			WHERE aggregate_graph_id=$aggregate_id) AS agi
		ON gtg.local_graph_id=agi.local_graph_id
		$sql_where
		ORDER BY " . get_request_var('sort_column') . ' ' . get_request_var('sort_direction') .
		' LIMIT ' . ($rows*(get_request_var('page')-1)) . ',' . $rows);

	$nav = html_nav_bar('aggregate_graphs.php?action=edit&tab=items&id=' . get_request_var('id'), MAX_DISPLAY_PAGES, get_request_var('page'), $rows, $total_rows, 5, __('Graphs'), 'page', 'main');

	print $nav;

	$display_text = array(
		'title_cache'    => array('display' => __('Graph Title'), 'align' => 'left', 'sort' => 'ASC'),
		'local_graph_id' => array('display' => __('ID'), 'align' => 'right', 'sort' => 'ASC'),
		'agg_graph_id'   => array('display' => __('Included in Aggregate'), 'align' => 'left', 'sort' => 'ASC'),
		'height'         => array('display' => __('Size'), 'align' => 'left', 'sort' => 'ASC'));

	html_header_sort_checkbox($display_text, get_request_var('sort_column'), get_request_var('sort_direction'), 'action=edit&tab=items&id=' . get_request_var('id'), false);

	if (sizeof($graph_list) > 0) {
		foreach ($graph_list as $graph) {
			/* we're escaping strings here, so no need to escape them on form_selectable_cell */
			form_alternate_row('line' . $graph['local_graph_id'], true);
			form_selectable_cell(get_request_var('filter') != '' ? aggregate_format_text(htmlspecialchars($graph['title_cache']), get_request_var('filter')) : htmlspecialchars($graph['title_cache']), $graph['local_graph_id']);
			form_selectable_cell($graph['local_graph_id'], $graph['local_graph_id'], '', 'text-align:right');
			form_selectable_cell(($graph['agg_graph_id'] != '' ? "<span class='associated'>" . __('Yes') . "</span>":"<span class='notAssociated'>" . __('No') . "</span>"), $graph['local_graph_id']);
			form_selectable_cell($graph['height'] . 'x' . $graph['width'], $graph['local_graph_id']);
			form_checkbox_cell($graph['title_cache'], $graph['local_graph_id']);
			form_end_row();
		}
	}else{
		print '<tr><td><em>' . __('No Graphs Found') . '</em></td></tr>';
	}

	html_end_box(false);

	/* put the nav bar on the bottom as well */
	print $nav;
	
	/* add a list of tree names to the actions dropdown */
	add_tree_names_to_actions_array();

	/* draw the dropdown containing a list of available actions for this form */
	form_hidden_box('local_graph_id', get_request_var('id'), '');

	draw_actions_dropdown($agg_item_actions);

	form_end();
}

function aggregate_make_sql_where($sql_where, $items, $field) {
	if (strlen($sql_where)) {
		$sql_where .= ' AND (';
	}else{
		$sql_where  = 'WHERE (';
	}

	$indentation = 0;

	if (sizeof($items)) {
	foreach($items as $i) {
		$i = trim($i);
		while (substr($i,0,1) == '(') {
			$indentation++;
			$sql_where .= '(';
			$i = substr($i,1);
		}

		$split = strpos($i, ')');
		if ($split !== false) {
			$end = trim(substr($i,$split));
			$i   = substr($i,0,$split);
		}else{
			$end = '';
		}

		if (strlen($i)) {
			if (strtolower($i) == 'and') {
				$sql_where .= ' AND ';
			}elseif (strtolower($i) == 'or') {
				$sql_where .= ' OR ';
			}else{
				$sql_where .= $field . " LIKE '%%" . trim($i) . "%%'";
			}
		}

		if ($end != '') {
			while (substr($end,0,1) == ')') {
				$indentation--;
				$sql_where .= ')';
				$end = trim(substr($end,1));
			}
		}
	}
	}
	$sql_where .= ')';

	return trim($sql_where);
}

function aggregate_format_text($text, $filter) {
	$items = explode(' ', $filter);
	$tags  = array();
	foreach($items as $i) {
		$i = trim($i);
		$i = str_replace('(','',$i);
		$i = str_replace(')','',$i);
		if (strtolower($i) == 'and' || strtolower($i) == 'or') {
			continue;
		}

		if (substr_count($text, $i) !== false) {
			$tagno = rand();
			$tags[$tagno] = $i;
			$text = str_replace($i, "<<$tagno>>", $text);
		}
	}

	if (sizeof($tags)) {
		foreach($tags as $k => $t) {
			$text = str_replace("<<$k>>", "<span class='filteredValue'>" . htmlspecialchars($t) . "</span>", $text);
		}
	}

	return $text;
}

function aggregate_graph() {
	global $graph_actions, $item_rows;

	/* ================= input validation and session storage ================= */
	$filters = array(
		'rows' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'pageset' => true,
			'default' => '-1'
			),
		'template_id' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'pageset' => true,
			'default' => '-1'
			),
		'filter' => array(
			'filter' => FILTER_CALLBACK, 
			'pageset' => true,
			'default' => '', 
			'options' => array('options' => 'sanitize_search_string')
			),
		'page' => array(
			'filter' => FILTER_VALIDATE_INT, 
			'default' => '1'
			),
		'sort_column' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'title_cache', 
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_direction' => array(
			'filter' => FILTER_CALLBACK, 
			'default' => 'ASC', 
			'options' => array('options' => 'sanitize_search_string')
			),
	);

	validate_store_request_vars($filters, 'sess_agraph');
	/* ================= input validation ================= */

	if (get_request_var('rows') == -1) {
		$rows = read_config_option('num_rows_table');
	}else{
		$rows = get_request_var('rows');
	}

	?>
	<script type='text/javascript'>

	function applyFilter() {
		strURL  = 'aggregate_graphs.php';
		strURL += '?rows=' + $('#rows').val();
		strURL += '&page=' + $('#page').val();
		strURL += '&filter=' + $('#filter').val();
		strURL += '&template_id=' + $('#template_id').val();
		strURL += '&header=false';
		loadPageNoHeader(strURL);
	}

	function clearFilter() {
		strURL = 'aggregate_graphs.php?clear=1&header=false';
		loadPageNoHeader(strURL);
	}

	$(function() {
		$('#refresh').click(function() {
			applyFilter();
		});

		$('#clear').click(function() {
			clearFilter();
		});

		$('#filter').change(function() {
			applyFilter();
		});

		$('#form_graphs').submit(function(event) {
			event.preventDefault();
			applyFilter();
		});
	});

	</script>
	<?php

	html_start_box(__('Aggregate Graphs'), '100%', '', '3', 'center', '');

	?>
	<tr class='even'>
		<td>
			<form id='form_graphs' action='aggregate_graphs.php'>
			<table class='filterTable'>
				<tr>
					<td>
						<?php print __('Search');?>
					</td>
					<td>
						<input type='text' id='filter' size='25' value='<?php print htmlspecialchars(get_request_var('filter'));?>'>
					</td>
					<td>
						<?php print __('Template');?>
					</td>
					<td>
						<select id='template_id' name='template_id' onChange='applyFilter()'>
							<option value='-1'<?php if (get_request_var('template_id') == '-1') {?> selected<?php }?>><?php print __('Any');?></option>
							<option value='0'<?php if (get_request_var('template_id') == '0') {?> selected<?php }?>><?php print __('None');?></option>
							<?php
							$templates = db_fetch_assoc('SELECT DISTINCT at.id, at.name
								FROM aggregate_graph_templates AS at
								INNER JOIN aggregate_graphs AS ag
								ON ag.aggregate_template_id=at.id
								ORDER BY name');

							if (sizeof($templates) > 0) {
								foreach ($templates as $template) {
									print "<option value='" . $template['id'] . "'"; if (get_request_var('template_id') == $template['id']) { print ' selected'; } print '>' . htmlspecialchars($template['name']) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<?php print __('Graphs');?>
					</td>
					<td>
						<select id='rows' onChange='applyFilter()'>
							<option value='-1'<?php print (get_request_var('rows') == '-1' ? ' selected>':'>') . __('Default');?></option>
							<?php
							if (sizeof($item_rows) > 0) {
								foreach ($item_rows as $key => $value) {
									print "<option value='" . $key . "'"; if (get_request_var('rows') == $key) { print ' selected'; } print '>' . htmlspecialchars($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<input type='button' id='refresh' value='<?php print __('Go');?>' title='<?php print __('Set/Refresh Filters');?>'>
					</td>
					<td>
						<input type='button' id='clear' value='<?php print __('Clear');?>' title='<?php print __('Clear Filters');?>'>
					</td>
				</tr>
			</table>
			<input type='hidden' id='page' name='page' value='<?php print get_request_var('page');?>'>
			</form>
		</td>
	</tr>
	<?php

	html_end_box();

	$sql_where = 'WHERE (gtg.graph_template_id=0 AND gl.host_id=0)';
	/* form the 'where' clause for our main sql query */
	if (strlen(get_request_var('filter'))) {
		$sql_where .= " AND (gtg.title_cache LIKE '%%" . get_request_var('filter') . "%%'" .
			" OR ag.title_format LIKE '%%" . get_request_var('filter') . "%%')";
	}

	if (get_request_var('template_id') == '-1') {
		/* Show all items */
	}elseif (get_request_var('template_id') == '0') {
		$sql_where .= ' AND (ag.aggregate_template_id=0 OR ag.aggregate_template_id IS NULL)';
	}elseif (!isempty_request_var('template_id')) {
		$sql_where .= ' AND ag.aggregate_template_id=' . get_request_var('template_id');
	}

	$total_rows = db_fetch_cell("SELECT COUNT(gtg.id) AS total
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		LEFT JOIN aggregate_graphs AS ag
		ON gtg.local_graph_id=ag.local_graph_id
		LEFT JOIN aggregate_graph_templates AS agt
		ON agt.id=ag.aggregate_template_id
		$sql_where");

	$graph_list = db_fetch_assoc("SELECT
		gtg.id, gtg.local_graph_id, gtg.height, gtg.width, gtg.title_cache, agt.name
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		LEFT JOIN aggregate_graphs AS ag
		ON gtg.local_graph_id=ag.local_graph_id
		LEFT JOIN aggregate_graph_templates AS agt
		ON agt.id=ag.aggregate_template_id
		$sql_where
		AND ag.id IS NOT NULL
		ORDER BY " . get_request_var('sort_column') . ' ' . get_request_var('sort_direction') .
		' LIMIT ' . ($rows*(get_request_var('page')-1)) . ',' . $rows);


	$nav = html_nav_bar('aggregate_graphs.php', MAX_DISPLAY_PAGES, get_request_var('page'), $rows, $total_rows, 5, __('Aggregate Graphs'), 'page', 'main');

	form_start('aggregate_graphs.php', 'chk');

	print $nav;

	html_start_box('', '100%', '', '3', 'center', '');

	$display_text = array(
		'title_cache'    => array('display' => __('Graph Title'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('The title for the Aggregate Graphs')),
		'local_graph_id' => array('display' => __('ID'), 'align' => 'right', 'sort' => 'ASC', 'tip' => __('The internal database identifier for this object')),
		'name'           => array('display' => __('Aggregate Template'), 'align' => 'left', 'sort' => 'ASC', 'tip' => __('The Aggregate Template that this Aggregate Graphs is based upon')),
		'height'         => array('display' => __('Size'), 'align' => 'right', 'sort' => 'ASC')
	);

	html_header_sort_checkbox($display_text, get_request_var('sort_column'), get_request_var('sort_direction'), false, 'filter=' . get_request_var('filter'));

	if (sizeof($graph_list)) {
		foreach ($graph_list as $graph) {
			/* we're escaping strings here, so no need to escape them on form_selectable_cell */
			$template_name = htmlspecialchars($graph['name']);
			form_alternate_row('line' . $graph['local_graph_id'], true);
			form_selectable_cell(filter_value(title_trim($graph['title_cache'], read_config_option('max_title_length')), get_request_var('filter'), 'aggregate_graphs.php?action=edit&id=' . $graph['local_graph_id']), $graph['local_graph_id']);
			form_selectable_cell($graph['local_graph_id'], $graph['local_graph_id'], '', 'text-align:right;');
			form_selectable_cell((empty($graph['name']) ? '<em>' . __('None') . '</em>' : filter_value($template_name, get_request_var('filter'))), $graph['local_graph_id']);
			form_selectable_cell($graph['height'] . 'x' . $graph['width'], $graph['local_graph_id']);
			form_checkbox_cell($graph['title_cache'], $graph['local_graph_id']);
			form_end_row();
		}
	}else{
		print '<tr><td><em>' . __('No Aggregate Graphs Found') .'</em></td></tr>';
	}

	html_end_box(false);

	if (sizeof($graph_list)) {
		/* put the nav bar on the bottom as well */
		print $nav;
	}

	/* add a list of tree names to the actions dropdown */
	add_tree_names_to_actions_array();

	/* draw the dropdown containing a list of available actions for this form */
	draw_actions_dropdown($graph_actions);

	/* remove old graphs */
	purge_old_graphs();

	form_end();
}

function purge_old_graphs() {
	/* workaround to handle purged graphs */
	$old_graphs = array_rekey(db_fetch_assoc('SELECT DISTINCT local_graph_id
		FROM aggregate_graphs_items AS pagi
		LEFT JOIN graph_local AS gl ON pagi.local_graph_id=gl.id
		WHERE gl.id IS NULL AND local_graph_id>0'), 'local_graph_id',  'local_graph_id');

	if (sizeof($old_graphs)) {
		db_execute('DELETE FROM aggregate_graphs_items
			WHERE local_graph_id IN (' . implode(',', $old_graphs) . ')');
	}

	$old_aggregates = array_rekey(db_fetch_assoc('SELECT DISTINCT local_graph_id
		FROM aggregate_graphs AS pag
		LEFT JOIN graph_local AS gl
		ON pag.local_graph_id=gl.id
		WHERE gl.id IS NULL AND local_graph_id>0'), 'local_graph_id', 'local_graph_id');

	$old_agg_ids = array_rekey(db_fetch_assoc('SELECT DISTINCT pag.id
		FROM aggregate_graphs AS pag
		LEFT JOIN graph_local AS gl
		ON pag.local_graph_id=gl.id
		WHERE gl.id IS NULL'), 'id', 'id');

	if (sizeof($old_aggregates)) {
		db_execute('DELETE FROM graph_templates_item 
			WHERE local_graph_id IN (' . implode(',', $old_aggregates) . ')');

		db_execute('DELETE FROM graph_templates_graph 
			WHERE local_graph_id IN (' . implode(',', $old_aggregates) . ')');

		db_execute('DELETE FROM aggregate_graphs 
			WHERE local_graph_id IN (' . implode(',', $old_aggregates) . ')');
	}

	if (sizeof($old_agg_ids)) {
		db_execute('DELETE FROM aggregate_graphs_items
			WHERE aggregate_graph_id IN (' . implode(',', $old_agg_ids) . ')');
	}
}