<?php
/*
 +-------------------------------------------------------------------------+
 | Copyright (C) 2004-2020 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');

$gprint_actions = array(
	1 => __('Delete')
);

/* 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();

		gprint_presets_edit();

		bottom_footer();
		break;
	default:
		top_header();

		gprint_presets();

		bottom_footer();
		break;
}

/* --------------------------
    The Save Function
   -------------------------- */

function form_save() {
	if (isset_request_var('save_component_gprint_presets')) {
		/* ================= input validation ================= */
		get_filter_request_var('id');
		/* ==================================================== */

		$save['id']          = get_request_var('id');
		$save['hash']        = get_hash_gprint(get_request_var('id'));
		$save['name']        = form_input_validate(get_nfilter_request_var('name'), 'name', '', false, 3);
		$save['gprint_text'] = form_input_validate(get_nfilter_request_var('gprint_text'), 'gprint_text', '', false, 3);

		if (!is_error_message()) {
			$gprint_preset_id = sql_save($save, 'graph_templates_gprint');

			if ($gprint_preset_id) {
				raise_message(1);
			} else {
				raise_message(2);
			}
		}

		if (is_error_message()) {
			header('Location: gprint_presets.php?header=false&action=edit&id=' . (empty($gprint_preset_id) ? get_nfilter_request_var('id') : $gprint_preset_id));
			exit;
		} else {
			header('Location: gprint_presets.php?header=false');

			exit;
		}
	}
}

/* -----------------------------------
    gprint_presets - GPRINT Presets
   ----------------------------------- */

function form_actions() {
	global $gprint_actions;

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

	/* 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 ($selected_items != false) {
			if (get_nfilter_request_var('drp_action') == '1') { /* delete */
				db_execute('DELETE FROM graph_templates_gprint WHERE ' . array_to_sql_or($selected_items, 'id'));
			}
		}

		header('Location: gprint_presets.php?header=false');

		exit;
	}

	/* setup some variables */
	$gprint_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]);
			/* ==================================================== */

			$gprint_list .= '<li>' . html_escape(db_fetch_cell_prepared('SELECT name FROM graph_templates_gprint WHERE id = ?', array($matches[1]))) . '</li>';
			$gprint_array[$i] = $matches[1];

			$i++;
		}
	}

	top_header();

	form_start('gprint_presets.php');

	html_start_box($gprint_actions[get_request_var('drp_action')], '60%', '', '3', 'center', '');

	if (isset($gprint_array) && cacti_sizeof($gprint_array)) {
		if (get_request_var('drp_action') == '1') { /* delete */
			print "<tr>
				<td class='textArea' class='odd'>
					<p>" . __('Click \'Continue\' to delete the folling GPRINT Preset(s).') . "</p>
					<div class='itemlist'><ul>$gprint_list</ul></div>
				</td>
			</tr>\n";

			$save_html = "<input type='button' class='ui-button ui-corner-all ui-widget' value='" . __esc('Cancel') ."' onClick='cactiReturnTo()'>&nbsp;<input type='submit' class='ui-button ui-corner-all ui-widget' value='" . __esc('Continue') . "' title='" . __esc('Delete GPRINT Preset(s)') ."'>";
		}
	} else {
		raise_message(40);
		header('Location: gprint_presets.php?header=false');
        exit;
	}

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

	html_end_box();

	form_end();

	bottom_footer();
}

function gprint_presets_edit() {
	global $fields_grprint_presets_edit;

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

	if (!isempty_request_var('id')) {
		$gprint_preset = db_fetch_row_prepared('SELECT * FROM graph_templates_gprint WHERE id = ?', array(get_request_var('id')));
		$header_label = __esc('GPRINT Presets [edit: %s]', $gprint_preset['name']);
	} else {
		$header_label = __('GPRINT Presets [new]');
	}

	form_start('gprint_presets.php', 'gprint_presets');

	html_start_box($header_label, '100%', true, '3', 'center', '');

	draw_edit_form(
		array(
			'config' => array('no_form_tag' => true),
			'fields' => inject_form_variables($fields_grprint_presets_edit, (isset($gprint_preset) ? $gprint_preset : array()))
		)
	);

	html_end_box(true, true);

	form_save_button('gprint_presets.php');
}

function gprint_presets() {
	global $gprint_actions, $item_rows;

	/* ================= input validation and session storage ================= */
	$filters = array(
		'rows' => array(
			'filter' => FILTER_VALIDATE_INT,
			'pageset' => true,
			'default' => '-1'
			),
		'page' => array(
			'filter' => FILTER_VALIDATE_INT,
			'default' => '1'
			),
		'filter' => array(
			'filter' => FILTER_DEFAULT,
			'pageset' => true,
			'default' => ''
			),
		'sort_column' => array(
			'filter' => FILTER_CALLBACK,
			'default' => 'name',
			'options' => array('options' => 'sanitize_search_string')
			),
		'sort_direction' => array(
			'filter' => FILTER_CALLBACK,
			'default' => 'ASC',
			'options' => array('options' => 'sanitize_search_string')
			),
		'has_graphs' => array(
			'filter' => FILTER_VALIDATE_REGEXP,
			'options' => array('options' => array('regexp' => '(true|false)')),
			'pageset' => true,
			'default' => read_config_option('default_has') == 'on' ? 'true':'false'
			)
	);

	validate_store_request_vars($filters, 'sess_gp');
	/* ================= input validation and session storage ================= */

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

	html_start_box(__('GPRINT Presets'), '100%', '', '3', 'center', 'gprint_presets.php?action=edit');

	?>
	<tr class='even'>
		<td>
			<form id='form_gprint' action='gprint_presets.php'>
			<table class='filterTable'>
				<tr>
					<td>
						<?php print __('Search');?>
					</td>
					<td>
						<input type='text' class='ui-state-default ui-corner-all' id='filter' name='filter' size='25' value='<?php print html_escape_request_var('filter');?>'>
					</td>
					<td>
						<?php print __('GPRINTs');?>
					</td>
					<td>
						<select id='rows' onChange='applyFilter()'>
							<option value='-1'<?php print (get_request_var('rows') == '-1' ? ' selected>':'>') . __('Default');?></option>
							<?php
							if (cacti_sizeof($item_rows)) {
								foreach ($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='has_graphs' <?php print (get_request_var('has_graphs') == 'true' ? 'checked':'');?>>
							<label for='has_graphs'><?php print __('Has Graphs');?></label>
						</span>
					</td>
					<td>
						<span>
							<input type='button' class='ui-button ui-corner-all ui-widget' id='refresh' value='<?php print __esc('Go');?>' title='<?php print __esc('Set/Refresh Filters');?>'>
							<input type='button' class='ui-button ui-corner-all ui-widget' id='clear' value='<?php print __esc('Clear');?>' title='<?php print __esc('Clear Filters');?>'>
						</span>
					</td>
				</tr>
			</table>
			</form>
			<script type='text/javascript'>

			function applyFilter() {
				strURL  = 'gprint_presets.php?header=false';
				strURL += '&filter='+$('#filter').val();
				strURL += '&rows='+$('#rows').val();
				strURL += '&has_graphs='+$('#has_graphs').is(':checked');
				loadPageNoHeader(strURL);
			}

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

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

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

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

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

			</script>
		</td>
	</tr>
	<?php

	html_end_box();

	/* form the 'where' clause for our main sql query */
	if (get_request_var('filter') != '') {
		$sql_where = 'WHERE (name LIKE ' . db_qstr('%' . get_request_var('filter') . '%') . ')';
	} else {
		$sql_where = '';
	}

	if (get_request_var('has_graphs') == 'true') {
		$sql_having = 'HAVING graphs>0';
	} else {
		$sql_having = '';
	}

	$total_rows = db_fetch_cell("SELECT
		COUNT(`rows`)
		FROM (
			SELECT gp.id AS `rows`,
			SUM(CASE WHEN local_graph_id>0 THEN 1 ELSE 0 END) AS graphs
			FROM graph_templates_gprint AS gp
			LEFT JOIN graph_templates_item AS gti
			ON gti.gprint_id=gp.id
			$sql_where
			GROUP BY gp.id
			$sql_having
		) AS rs");

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

	$gprint_list = db_fetch_assoc("SELECT rs.*,
		SUM(CASE WHEN local_graph_id=0 THEN 1 ELSE 0 END) AS templates,
		SUM(CASE WHEN local_graph_id>0 THEN 1 ELSE 0 END) AS graphs
		FROM (
			SELECT gp.*, gti.local_graph_id
			FROM graph_templates_gprint AS gp
			LEFT JOIN graph_templates_item AS gti
			ON gti.gprint_id=gp.id
			GROUP BY gp.id, gti.graph_template_id, gti.local_graph_id
		) AS rs
		$sql_where
		GROUP BY rs.id
		$sql_having
		$sql_order
		$sql_limit");

	$display_text = array(
		'name' => array(
			'display' => __('GPRINT Preset Name'),
			'align' => 'left',
			'sort' => 'ASC',
			'tip' => __('The name of this GPRINT Preset.')
		),
		'gprint_text' => array(
			'display' => __('Format'),
			'align' => 'right',
			'sort' => 'ASC',
			'tip' => __('The GPRINT format string.')
		),
		'nosort' => array(
			'display' => __('Deletable'),
			'align' => 'right',
			'tip' => __('GPRINTs that are in use cannot be Deleted.  In use is defined as being referenced by either a Graph or a Graph Template.')
		),
		'graphs' => array(
			'display' => __('Graphs Using'),
			'align' => 'right',
			'sort' => 'DESC',
			'tip' => __('The number of Graphs using this GPRINT.')
		),
		'templates' => array(
			'display' => __('Templates Using'),
			'align' => 'right',
			'sort' => 'DESC',
			'tip' => __('The number of Graphs Templates using this GPRINT.')
		)
	);

	$nav = html_nav_bar('gprint_presets.php?filter=' . get_request_var('filter'), MAX_DISPLAY_PAGES, get_request_var('page'), $rows, $total_rows, cacti_sizeof($display_text) + 1, __('GPRINTs'), 'page', 'main');

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

	print $nav;

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

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

	$i = 0;
	if (cacti_sizeof($gprint_list)) {
		foreach ($gprint_list as $gp) {
			if ($gp['graphs'] == 0 && $gp['templates'] == 0) {
				$disabled = false;
			} else {
				$disabled = true;
			}

            form_alternate_row('line' . $gp['id'], false, $disabled);
			form_selectable_cell(filter_value($gp['name'], get_request_var('filter'), 'gprint_presets.php?action=edit&id=' . $gp['id']), $gp['id']);
            form_selectable_ecell($gp['gprint_text'], $gp['id'], '', 'right');
            form_selectable_cell($disabled ? __('No'):__('Yes'), $gp['id'], '', 'right');
            form_selectable_cell(number_format_i18n($gp['graphs'], '-1'), $gp['id'], '', 'right');
            form_selectable_cell(number_format_i18n($gp['templates'], '-1'), $gp['id'], '', 'right');
            form_checkbox_cell($gp['name'], $gp['id'], $disabled);
            form_end_row();
		}
	} else {
		print "<tr class='tableRow'><td colspan='" . (cacti_sizeof($display_text)+1) . "'><em>" . __('No GPRINT Presets') . "</em></td></tr>\n";
	}

	html_end_box(false);

	if (cacti_sizeof($gprint_list)) {
		print $nav;
	}

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

	form_end();
}
