<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2018 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['aggregate_template_id'] = $aggregate_template_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['aggregate_template_id'] != $save['aggregate_template_id']);
			$save_me += ($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 */
			$graph_templates_items = array_rekey(
				db_fetch_assoc_prepared('SELECT id, sequence
					FROM graph_templates_item
					WHERE local_graph_id=0
					AND graph_template_id = ?
					ORDER BY sequence', array($graph_template_id)),
				'id', array('sequence')
			);
			/* get existing aggregate template items */
			$aggregate_graph_items_old = array_rekey(
				db_fetch_assoc_prepared('SELECT *
					FROM aggregate_graphs_graph_item
					WHERE aggregate_graph_id = ?
					ORDER BY sequence', array($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();
			$sequence = 1;
			foreach($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']       = $sequence;

				/* 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;

				$sequence++;
			}

			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 */
	foreach ($_POST as $var => $val) {
		if (preg_match('/^chk_([0-9]+)$/', $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";

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

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

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

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

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

			$save_html = "<input type='button' value='" . __esc('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __esc('Continue') . "' title='" . __esc('Dis-Associate Graph(s)') . "'>";
		} elseif (preg_match("/^tr_([0-9]+)$/", 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], '0', '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='" . __esc('Cancel') . "' onClick='cactiReturnTo()'>&nbsp;<input type='submit' value='" . __esc('Continue') . "' title='" . __esc('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='" . __esc('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]', html_escape(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')) {
		$_SESSION['aggregate_referer'] = sanitize_uri($_SERVER['HTTP_REFERER']);
	} elseif (isset($_SERVER['HTTP_REFERER']) && !isset($_SESSION['aggregate_referer'])) {
		$_SESSION['aggregate_referer'] = sanitize_uri($_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']));

		if ($aginfo['title_format'] == '') {
			$aginfo['title_format'] = get_graph_title($graphs['local_graph_id']);
		}

		$header_label = '[edit: ' . html_escape(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 ================= */
	if (isset_request_var('tab')) {
		switch(get_nfilter_request_var('tab')) {
		case 'details':
		case 'items':
		case 'preview':
			$_SESSION['agg_tab'] = get_nfilter_request_var('tab');
			set_request_var('tab', get_nfilter_request_var('tab'));

			break;
		default:
			if (isset($_SESSION['agg_tab'])) {
				set_request_var('tab', $_SESSION['agg_tab']);
			}else{
				$_SESSION['agg_tab'] = 'details';
				set_request_var('tab', 'details');
			}
		}
	} elseif (isset($_SESSION['agg_tab'])) {
		set_request_var('tab', $_SESSION['agg_tab']);
	} else {
		set_request_var('tab', 'details');
	}
	/* ================= input validation ================= */

	$current_tab = get_nfilter_request_var('tab');

	/* draw the categories tabs on the top of the page */
	print "<div class='tabs'>\n";
	print "<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 class='subTab'><a class='tab " . ($tab_short_name == $current_tab ? "selected'" : "'") .
					" href='" . html_escape($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>\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') && $current_tab == 'preview') {
		print "<ul style='float:right;'><li><a class='pic' href='" . html_escape('aggregate_graphs.php?action=edit&id=' . get_request_var('id') . '&tab=' . get_request_var('tab') .  '&debug=' . (isset($_SESSION['graph_debug_mode']) ? '0' : '1')) . "'>" . $message . "</a></li></ul></nav>\n</div></div>\n";
	} elseif (!isempty_request_var('id') && $current_tab == 'details' && (!sizeof($template))) {
		print "<ul style='float:right;'><li><a id='toggle_items' class='pic' href='#'>" . __('Show Item Details') . "</a></li></ul></nav>\n</div></div>\n";
	} else {
		print "</nav></div></div>\n";
	}

	if (!isempty_request_var('id') && $current_tab == 'preview') {
		html_start_box(__('Aggregate Preview [%s]', $header_label), '100%', '', '3', 'center', '');
		?>
		<tr class='even'><td class='center'>
			<img src='<?php print html_escape($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') . '&random=' . mt_rand());?>' alt=''>
		</td></tr>
		<?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;
			?>
			<tr><td class='left'>
				<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></tr>
			<?php
		}
		?>
		<?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%', true, '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(true, true);

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

			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[id^="agg_color"]',
				'input[id^="agg_total"]',
				'input[id^="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();
				}

				$('input[id^="agg_total"], input[id^="agg_skip"]').click(function() {
					id = $(this).attr('id');

					if (id.indexOf('skip') > 0) {
						altId = id.replace('skip', 'total');
					} else {
						altId = id.replace('total', 'skip');
					}

					if ($('#'+id).is(':checked')) {
						$('#'+altId).prop('checked', false);
					} else {
						$('#'+altId).prop('checked', true);
					}

					changeTotals();
				});

				$('#total').change(function() {
					changeTotals();
				});

				$('#total_type').change(function() {
					changeTotalsType();
				});

				$('#template_propogation').change(function() {
					if (!$('#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);
						}
					}
				});
			});

			function changeTotals() {
				switch ($('#total').val()) {
					case '<?php print AGGREGATE_TOTAL_NONE;?>':
						$('#row_total_type').hide();
						$('#row_total_prefix').hide();
						$('#row_order_type').show();
						break;
					case '<?php print AGGREGATE_TOTAL_ALL;?>':
						$('#row_total_type').show();
						$('#row_total_prefix').show();
						$('#row_order_type').show();
						changeTotalsType();
						break;
					case '<?php print AGGREGATE_TOTAL_ONLY;?>':
						$('#row_total_type').show();
						$('#row_total_prefix').show();
						//$('#order_type').prop('disabled', true);
						changeTotalsType();
						break;
				}
			}

			function changeTotalsType() {
				if ($('#total_type').val() == <?php print AGGREGATE_TOTAL_TYPE_SIMILAR;?>) {
					if ($('#total_prefix').val() == '') {
						$('#total_prefix').attr('value', '<?php print __('Total');?>');
					}
				} else if ($('#total_type').val() == <?php print AGGREGATE_TOTAL_TYPE_ALL;?>) {
					if ($('#total_prefix').val() == '') {
						$('#total_prefix').attr('value', '<?php print __('All Items');?>');
					}
				}
			}
			</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%', true, '3', 'center', '');

			$form_array = array();

			foreach ($struct_graph as $field_name => $field_array) {
				if ($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(true, true);
		}

		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'
			),
		'rfilter' => array(
			'filter'  => FILTER_VALIDATE_IS_REGEX,
			'pageset' => true,
			'default' => ''
			),
		'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() +
			'&rows=' + $('#rows').val() +
			'&rfilter=' + base64_encode($('#rfilter').val()) +
			'&matching=' + $('#matching').is(':checked') +
			'&header=false';
		loadPageNoHeader(strURL);
	}

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

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

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

		$('#rfilter').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='rfilter' size='45' onChange='applyFilter()' value='<?php print get_request_var('rfilter');?>'>
					</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') == $key) { print ' selected'; } print '>' . html_escape($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<span>
							<input type='checkbox' id='matching' onChange='applyFilter()' <?php print (get_request_var('matching') == 'on' || get_request_var('matching') == 'true' ? ' checked':'');?>>
							<label for='matching'><?php print __('Part of Aggregate');?></label>
						</span>
					</td>
					<td>
						<span>
							<input id='refresh' type='button' value='<?php print __esc('Go');?>' title='<?php print __esc('Set/Refresh Filters');?>'>
							<input id='clear' type='button' onClick='clearFilter()' value='<?php print __esc('Clear');?>' title='<?php print __esc('Clear Filters');?>'>
						</span>
					</td>
				</tr>
			</table>
			<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 (get_request_var('rfilter') == '') {
		$sql_where = '';
	} elseif (validate_is_regex(get_request_var('rfilter'))) {
		$sql_where = 'WHERE gtg.title_cache RLIKE "' . get_request_var('rfilter') . '"';
	} else {
		$filters = explode(' ', get_request_var('rfilter'));
		$sql_where = '';
		$sql_where = aggregate_make_sql_where($sql_where, $filters, 'gtg.title_cache');
	}

	if (get_request_var('matching') != 'false') {
		$sql_where .= ($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)) {
		$sql_where .= ($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(DISTINCT gl.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");

	$sql_order = get_order_string();
	$sql_limit = ' LIMIT ' . ($rows*(get_request_var('page')-1)) . ',' . $rows;

	$graph_list = db_fetch_assoc("SELECT
		gtg.id, gtg.local_graph_id, gtg.height, gtg.width, gtg.title_cache, agi.local_graph_id AS agg_graph_id
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		LEFT JOIN (
			SELECT DISTINCT local_graph_id
			FROM aggregate_graphs_items
			WHERE aggregate_graph_id=$aggregate_id) AS agi
		ON gtg.local_graph_id=agi.local_graph_id
		$sql_where
		$sql_order
		$sql_limit");

	$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' => 'right', 'sort' => 'ASC'));

	html_header_sort_checkbox($display_text, get_request_var('sort_column'), get_request_var('sort_direction'), false, 'aggregate_graphs.php?action=edit&id=' . get_request_var('id'));

	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);

			if (validate_is_regex(get_request_var('rfilter'))) {
				form_selectable_cell(filter_value($graph['title_cache'], get_request_var('rfilter')), $graph['local_graph_id']);
			} else {
				form_selectable_cell(get_request_var('rfilter') != '' ? aggregate_format_text(html_escape($graph['title_cache']), get_request_var('rfilter')) : html_escape($graph['title_cache']), $graph['local_graph_id']);
			}

			form_selectable_cell($graph['local_graph_id'], $graph['local_graph_id'], '', 'right');
			form_selectable_cell(($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'], $graph['local_graph_id'], '', 'right');
			form_checkbox_cell($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, $field) {
	if ($sql_where != '') {
		$sql_where .= ' AND (';
	} else {
		$sql_where  = 'WHERE (';
	}

	$indentation = 0;
	$termcount   = 0;

	if (sizeof($items)) {
		foreach($items as $i) {
			$i = trim($i);
			while (substr($i,0,1) == '(') {
				$indentation++;
				$termcount = 0;
				$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 ($i != '') {
				if (strtolower($i) == 'and') {
					$sql_where .= ' AND ';
				} elseif (strtolower($i) == 'or') {
					$sql_where .= ' OR ';
				} else {
					$sql_where .= ($termcount > 0 ? ' OR ':'') . $field . " LIKE '%" . trim($i) . "%'";
					$termcount++;
				}
			}

			if ($end != '') {
				while (substr($end, 0, 1) == ')') {
					$indentation--;
					$termcount = 0;
					$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'>" . html_escape($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 += '&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 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') == $template['id']) { print ' selected'; } print '>' . html_escape($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') == $key) { print ' selected'; } print '>' . html_escape($value) . "</option>\n";
								}
							}
							?>
						</select>
					</td>
					<td>
						<span>
							<input type='button' id='refresh' value='<?php print __esc('Go');?>' title='<?php print __esc('Set/Refresh Filters');?>'>
							<input type='button' id='clear' value='<?php print __esc('Clear');?>' title='<?php print __esc('Clear Filters');?>'>
						</span>
					</td>
				</tr>
			</table>
			</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 (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(DISTINCT gl.id) AS total
		FROM graph_templates_graph AS gtg
		INNER JOIN graph_local AS gl
		ON gtg.local_graph_id=gl.id
		INNER 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");

	$sql_order = get_order_string();
	$sql_limit = ' LIMIT ' . ($rows*(get_request_var('page')-1)) . ',' . $rows;

	$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
		INNER JOIN aggregate_graphs AS ag
		ON gl.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
		$sql_order
		$sql_limit");

	$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, 'aggregate_graphs.php?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 */
			$template_name = html_escape($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'], $graph['local_graph_id'], '', 'right');
			form_selectable_cell((empty($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'], $graph['local_graph_id'], '', 'right');
			form_checkbox_cell($graph['title_cache'], $graph['local_graph_id']);
			form_end_row();
		}
	} else {
		print '<tr><td colspan="' . (sizeof($display_text)+1) . '"><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) . ')');
	}
}

