<?php
/**
 * Graph viewer.
 *
 * @category   Reporting
 * @package    Pandora FMS
 * @subpackage Community
 * @version    1.0.0
 * @license    See below
 *
 *    ______                 ___                    _______ _______ ________
 * |   __ \.-----.--.--.--|  |.-----.----.-----. |    ___|   |   |     __|
 * |    __/|  _  |     |  _  ||  _  |   _|  _  | |    ___|       |__     |
 * |___|   |___._|__|__|_____||_____|__| |___._| |___|   |__|_|__|_______|
 *
 * ============================================================================
 * Copyright (c) 2005-2023 Pandora FMS
 * Please see https://pandorafms.com/community/ for full contribution list
 * 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 for version 2.
 * 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.
 * ============================================================================
 */

// Begin.
global $config;

check_login();


require_once 'include/functions_custom_graphs.php';

$delete_graph = (bool) get_parameter('delete_graph');
$view_graph = (bool) get_parameter('view_graph');
$id_graph = (int) get_parameter('id');

if ($id_graph !== 0) {
    $sql = "SELECT * FROM tgraph 
	WHERE (private = 0 OR (private = 1 AND id_user = '".$config['id_user']."'))
	AND id_graph = ".$id_graph;
    $control = db_process_sql($sql);
    if (!$control) {
        header('Location: index.php?sec=reporting&sec2=godmode/reporting/graphs');
    }
}

// Delete module SQL code.
if ($delete_graph) {
    if (check_acl($config['id_user'], 0, 'AW')) {
        $res = db_process_sql_delete('tgraph_source', ['id_graph' => $id_graph]);

        if ($res) {
            $result = ui_print_success_message(__('Successfully deleted'), '', true);
        } else {
            $result = ui_print_error_message(__('Not deleted. Error deleting data'), '', true);
        }

        $res = db_process_sql_delete('tgraph', ['id_graph' => $id_graph]);

        if ($res) {
            $result = ui_print_success_message(__('Successfully deleted'), '', true);
        } else {
            $result = ui_print_error_message(__('Not deleted. Error deleting data'), '', true);
        }

        echo $result;
    } else {
        db_pandora_audit(
            AUDIT_LOG_ACL_VIOLATION,
            'Trying to delete a graph from access graph builder'
        );
        include 'general/noaccess.php';
        exit;
    }
}

if ($view_graph) {
    $sql = "SELECT * FROM tgraph_source WHERE id_graph = $id_graph";
    $sources = db_get_all_rows_sql($sql);
    if ($sources === false) {
        $sources = [];
    }

    $sql = "SELECT * FROM tgraph WHERE id_graph = $id_graph";
    $graph = db_get_row_sql($sql);

    $id_user = $graph['id_user'];
    $private = $graph['private'];
    $width = $graph['width'];
    $height = ($graph['height'] + count($sources) * 10);

    $zoom = (int) get_parameter('zoom', 0);
    // Increase the height to fix the leyend rise
    if ($zoom > 0) {
        switch ($zoom) {
            case 1:
                $width = 500;
                $height = (200 + count($sources) * 15);
            break;

            case 2:
                $width = 650;
                $height = (300 + count($sources) * 10);
            break;

            case 3:
                $width = 770;
                $height = (400 + count($sources) * 5);
            break;
        }
    }

    // Get different date to search the report.
    $date = (string) get_parameter('date', date(DATE_FORMAT));
    $time = (string) get_parameter('time', date(TIME_FORMAT));
    $unixdate = strtotime($date.' '.$time);

    $period = (int) get_parameter('period');
    if (! $period) {
        $period = $graph['period'];
    } else {
        $period = $period;
    }

    $events = $graph['events'];
    $description = $graph['description'];
    $stacked = (int) get_parameter('stacked', -1);

    $percentil = ($graph['percentil']) ? 1 : null;
    $check = get_parameter('threshold', false);
    $fullscale = ($graph['fullscale']) ? 1 : null;

    if ($check == CUSTOM_GRAPH_BULLET_CHART_THRESHOLD) {
        $check = true;
        $stacked = CUSTOM_GRAPH_BULLET_CHART_THRESHOLD;
    }

    if ($stacked == -1) {
        $stacked = $graph['stacked'];
    }

    if ($stacked == CUSTOM_GRAPH_BULLET_CHART || $stacked == CUSTOM_GRAPH_BULLET_CHART_THRESHOLD) {
        $height = 50;
    }

    if ($stacked == CUSTOM_GRAPH_GAUGE) {
        // Use the defined graph height, that's why
        // the user can setup graph height.
        $height = $graph['height'];
    }

    $name = $graph['name'];
    if (($graph['private'] == 1) && ($graph['id_user'] != $id_user)) {
        db_pandora_audit(
            AUDIT_LOG_ACL_VIOLATION,
            'Trying to access to a custom graph not allowed'
        );
        include 'general/noaccess.php';
        exit;
    }

    html_print_input_hidden('line_width_graph', $config['custom_graph_width']);
    html_print_input_hidden('custom_graph', 1);
    $url = 'index.php?'.'sec=reporting&'.'sec2=operation/reporting/graph_viewer&'."id=$id_graph&".'view_graph=1';

    $options = [];

    if (check_acl_restricted_all($config['id_user'], $graph['id_group'], 'RW')
        || check_acl_restricted_all($config['id_user'], $graph['id_group'], 'RM')
    ) {
        $options = [
            'graph_list'   => [
                'active' => false,
                'text'   => '<a href="index.php?sec=reporting&sec2=godmode/reporting/graphs">'.html_print_image(
                    'images/logs@svg.svg',
                    true,
                    [
                        'title' => __('Graph list'),
                        'class' => 'main_menu_icon invert_filter',
                    ]
                ).'</a>',
            ],
            'main'         => [
                'active' => false,
                'text'   => '<a href="index.php?sec=reporting&sec2=godmode/reporting/graph_builder&tab=main&edit_graph=1&id='.$id_graph.'">'.html_print_image(
                    'images/graph@svg.svg',
                    true,
                    [
                        'title' => __('Main data'),
                        'class' => 'invert_filter',
                    ]
                ).'</a>',
            ],
            'graph_editor' => [
                'active' => false,
                'text'   => '<a href="index.php?sec=reporting&sec2=godmode/reporting/graph_builder&tab=graph_editor&edit_graph=1&id='.$id_graph.'">'.html_print_image(
                    'images/builder@svg.svg',
                    true,
                    [
                        'title' => __('Graph editor'),
                        'class' => 'main_menu_icon invert_filter',
                    ]
                ).'</a>',
            ],
        ];
    } else {
        $options = [
            'graph_list' => [
                'active' => false,
                'text'   => '<a href="index.php?sec=reporting&sec2=godmode/reporting/graphs">'.html_print_image('images/logs@svg.svg', true, ['title' => __('Graph list'), 'class' => 'main_menu_icon invert_filter']).'</a>',
            ],
        ];
    }

    $options['view']['text'] = '<a href="index.php?sec=reporting&sec2=operation/reporting/graph_viewer&view_graph=1&id='.$id_graph.'">'.html_print_image(
        'images/enable.svg',
        true,
        [
            'title' => __('View graph'),
            'class' => 'main_menu_icon invert_filter',
        ]
    ).'</a>';
    $options['view']['active'] = true;

    if ($config['pure'] == 0) {
        $options['screen']['text'] = "<a href='$url&pure=1'>".html_print_image(
            'images/fullscreen@svg.svg',
            true,
            [
                'title' => __('Full screen mode'),
                'class' => 'main_menu_icon invert_filter',
            ]
        ).'</a>';
    } else {
        $options['screen']['text'] = "<a href='$url&pure=0'>".html_print_image(
            'images/exit_fullscreen@svg.svg',
            true,
            [
                'title' => __('Back to normal mode'),
                'class' => 'main_menu_icon invert_filter',
            ]
        ).'</a>';

        // In full screen, the manage options are not available.
        $options = [
            'view'   => $options['view'],
            'screen' => $options['screen'],
        ];
    }

    if (!is_ajax()) {
        // Header.
        ui_print_standard_header(
            $graph['name'],
            'images/chart.png',
            false,
            '',
            false,
            $options,
            [
                [
                    'link'  => '',
                    'label' => __('Reporting'),
                ],
                [
                    'link'  => '',
                    'label' => __('Custom graphs'),
                ],
            ]
        );
    }

    $width = null;
    $height = null;
    $params = [
        'period'    => $period,
        'width'     => $width,
        'height'    => $height,
        'date'      => $unixdate,
        'percentil' => $percentil,
        'fullscale' => $fullscale,
    ];

    if ($stacked === CUSTOM_GRAPH_AREA || $stacked === CUSTOM_GRAPH_STACKED_AREA) {
        $params['type_graph'] = 'area';
    } else if ($stacked === CUSTOM_GRAPH_LINE || $stacked === CUSTOM_GRAPH_STACKED_LINE) {
        $params['type_graph'] = 'line';
    }

    $params_combined = [
        'stacked'  => $stacked,
        'id_graph' => $id_graph,
    ];

    $graph_return = graphic_combined_module(
        false,
        $params,
        $params_combined
    );

    if (is_ajax()) {
        echo $graph_return;
        return;
    }

    if ($stacked == CUSTOM_GRAPH_BULLET_CHART_THRESHOLD) {
        $stacked = 4;
    }

    $period_label = human_time_description_raw($period);
    $searchForm = '<form method="POST" action="index.php?sec=reporting&sec2=operation/reporting/graph_viewer&view_graph=1&id='.$id_graph.'">';
    $searchForm .= "<table class='filter-table-adv w100p' cellpadding='4' cellspacing='4'>";
    $searchForm .= '<tr>';

    $searchForm .= '<td class="w30p">';
    $searchForm .= html_print_label_input_block(
        __('Date'),
        html_print_input_text(
            'date',
            $date,
            '',
            '',
            10,
            true
        )
    );
    $searchForm .= '</td><td class="datos w30p">';
    $searchForm .= html_print_label_input_block(
        __('Time'),
        html_print_input_text(
            'time',
            $time,
            '',
            '',
            7,
            true
        )
    );
    $searchForm .= '</td>';
    $searchForm .= "<td class='datos w30p'>";
    $searchForm .= html_print_label_input_block(
        __('Time range'),
        html_print_extended_select_for_time(
            'period',
            (string) $period,
            'check_period_warning(this, \''.__('Warning').'\', \''.__('Displaying items with extended historical data can have an impact on system performance. We do not recommend that you use intervals longer than 30 days, especially if you combine several of them in a report, dashboard or visual console.').'\')',
            '',
            0,
            10,
            true,
            'width:100%',
            true,
            '',
            false,
            false,
            '',
            false,
            0,
            null,
            'check_period_warning_manual(\'period\', \''.__('Warning').'\', \''.__('Displaying items with extended historical data can have an impact on system performance. We do not recommend that you use intervals longer than 30 days, especially if you combine several of them in a report, dashboard or visual console.').'\')'
        )
    );
    $searchForm .= '</td>';
    $searchForm .= '</tr><tr>';
    $searchForm .= "<td class='datos w30p'>";
    $stackeds = [];
    $stackeds[0] = __('Graph defined');
    $stackeds[CUSTOM_GRAPH_AREA] = __('Area');
    $stackeds[CUSTOM_GRAPH_STACKED_AREA] = __('Stacked area');
    $stackeds[CUSTOM_GRAPH_LINE] = __('Line');
    $stackeds[CUSTOM_GRAPH_STACKED_LINE] = __('Stacked line');
    $stackeds[CUSTOM_GRAPH_BULLET_CHART] = __('Bullet chart');
    $stackeds[CUSTOM_GRAPH_GAUGE] = __('Gauge');
    $stackeds[CUSTOM_GRAPH_HBARS] = __('Horizontal Bars');
    $stackeds[CUSTOM_GRAPH_VBARS] = __('Vertical Bars');
    $stackeds[CUSTOM_GRAPH_PIE] = __('Pie');
    $searchForm .= html_print_label_input_block(__('Type'), html_print_select($stackeds, 'stacked', $stacked, '', '', -1, true, false, true, '', false, 'width:100%'));
    $searchForm .= '</td>';
    $searchForm .= "<td class='datos w30p'>";
    $searchForm .= html_print_label_input_block(
        __('Equalize maxiddmum thresholds').ui_print_help_tip(
            __('If an option is selected, all graphs will have the highest value from all modules included in the graph as a maximum threshold'),
            true
        ),
        html_print_checkbox(
            'threshold',
            CUSTOM_GRAPH_BULLET_CHART_THRESHOLD,
            $check,
            true,
            false,
            '',
            false
        ),
        ['div_id' => 'thresholdDiv']
    );
    $searchForm .= '</td>';

    $searchForm .= "<td class='datos w30p'>";
    $zooms = [];
    $zooms[0] = __('Graph defined');
    $zooms[1] = __('Zoom x1');
    $zooms[2] = __('Zoom x2');
    $zooms[3] = __('Zoom x3');
    $searchForm .= html_print_label_input_block(__('Zoom'), html_print_select($zooms, 'zoom', $zoom, '', '', 0, true, false, true, '', false, 'width:100%'));
    $searchForm .= '</td>';

    $searchForm .= '</tr>';
    $searchForm .= '</table>';
    $searchForm .= html_print_div(
        [
            'class'   => 'action-buttons',
            'content' => html_print_submit_button(
                __('Filter'),
                'submit-refresh',
                false,
                [
                    'mode' => 'mini',
                    'icon' => 'search',
                ],
                true
            ),
        ],
        true
    );
    $searchForm .= '</form>';

    ui_toggle(
        $searchForm,
        '<span class="subsection_header_title">'.__('Filters').'</span>',
        'filter_form',
        '',
        true,
        false,
        '',
        'white-box-content',
        'box-flat white_table_graph fixed_filter_bar'
    );

    if ($graph_return) {
        echo '<div class="container-custom-graph">';
        if (!is_ajax()) {
            echo '<div id="spinner_loading" class="loading invisible" style="display:flex;flex-direction:column-reverse;justify-content:center;align-items:center">';
            echo html_print_image('images/spinner.gif', true, ['width' => '20px']);
            echo __('Loading').'&hellip;';
            echo '</div>';
        }

        echo '<div id="div-container" class="w100p" style="height:100%;">';

        echo '<div style="position: relative; display: flex; flex-direction:row; justify-content: center; align-items: center; align-content: center; width:100%; height:50vh;">';
        echo '<div style="flex: 0 0 auto; width:99%; height:100%;">';
        echo $graph_return;
        echo '</div>';
        echo '</div>';

        echo '</div>';

        echo '</div>';
    } else {
        ui_print_info_message([ 'no_close' => true, 'message' => __('No data.') ]);
    }

    /*
        We must add javascript here. Otherwise, the date picker won't
        work if the date is not correct because php is returning.
    */

    ui_include_time_picker();
    ui_require_jquery_file('ui.datepicker-'.get_user_language(), 'include/javascript/i18n/');
    ui_require_jquery_file('');
    ?>
    <script language="javascript" type="text/javascript">

    $(document).ready (function () {
        $("#spinner_loading").hide();
        $("#loading").slideUp ();
        $("#text-time").timepicker({
            showSecond: true,
            timeFormat: '<?php echo TIME_FORMAT_JS; ?>',
            timeOnlyTitle: '<?php echo __('Choose time'); ?>',
            timeText: '<?php echo __('Time'); ?>',
            hourText: '<?php echo __('Hour'); ?>',
            minuteText: '<?php echo __('Minute'); ?>',
            secondText: '<?php echo __('Second'); ?>',
            currentText: '<?php echo __('Now'); ?>',
            closeText: '<?php echo __('Close'); ?>'});

        $.datepicker.setDefaults($.datepicker.regional[ "<?php echo get_user_language(); ?>"]);

        $("#text-date").datepicker({
            dateFormat: "<?php echo DATE_FORMAT_JS; ?>",
            changeMonth: true,
            changeYear: true,
            showAnim: "slideDown"});

        if ($("#stacked").val() == '4') {
            $("#thresholdDiv").show();
        }else{
            $("#thresholdDiv").hide();
        }

        $("#submit-refresh").click(function(e) {
            e.preventDefault();
            $("#spinner_loading").show();
            var data = {
                page: "operation/reporting/graph_viewer",
                view_graph: 1,
                id: '<?php echo $id_graph; ?>',
                zoom: $('#zoom').val(),
                date: $('#text-date').val(),
                time: $('#text-time').val(),
                period: $('select[id^=period][id$=select]').val(),
                stacked: $('#stacked').val(),
            }

            if (data['stacked'] == 4 && $('#checkbox-threshold').is(':checked')) {
                data['threshold'] = 1;
            }

            (function (stacked) {
                $.ajax({
                    type: "POST",
                    url: "ajax.php",
                    dataType: "html",
                    data: data,
                    success: function (data) {
                        if (stacked === "<?php echo CUSTOM_GRAPH_VBARS; ?>") {
                            document.getElementById("div-container").classList.add('w100p', 'height_600px');
                        }

                        document.getElementById("div-container").innerHTML = "";
                        $("#spinner_loading").hide();
                        $("#div-container").append(data);
                    },
                    error: function (data) {
                        console.error("Fatal error")
                    }
                });
            })(data['stacked']);
        });


    });

    $("#stacked").change(function(){
        if ($(this).val() == '4') {
            $("#thresholdDiv").show();
            $(".stacked").show();
        } else {
            $("[name=threshold]").prop("checked", false);
            $(".stacked").show();
            $("#thresholdDiv").hide();
        }
    });
    </script>

    <?php
    $datetime = strtotime($date.' '.$time);
    $report['datetime'] = $datetime;

    if ($datetime === false || $datetime == -1) {
        ui_print_error_message(__('Invalid date selected'));
        return;
    }

    return;
}

// Header.
ui_print_page_header(__('Reporting').' &raquo;  '.__('Custom graph viewer'), 'images/op_reporting.png', false, '', false, '');


$graphs = custom_graphs_get_user();
if (! empty($graphs)) {
    $table = new stdClass();
    $table->width = '100%';
    $tale->class = 'databox_frame';
    $table->align = [];
    $table->align[2] = 'center';
    $table->head = [];
    $table->head[0] = __('Graph name');
    $table->head[1] = __('Description');
    $table->data = [];

    foreach ($graphs as $graph) {
        $data = [];

        $data[0] = '<a href="index.php?sec=reporting&sec2=operation/reporting/graph_viewer&view_graph=1&id='.$graph['id_graph'].'">'.$graph['name'].'</a>';
        $data[1] = $graph['description'];

        array_push($table->data, $data);
    }

    html_print_table($table);
} else {
    echo "<div class='nf'>".__('There are no defined reportings').'</div>';
}