<?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;
        }
    }

    // Calculate range dates.
    $custom_date = get_parameter('custom_date', 0);
    $date = get_parameter('date', SECONDS_1DAY);
    $date_text = get_parameter('date_text', SECONDS_1DAY);
    if ($custom_date === '1') {
        $date_init_less = (strtotime(date('Y-m-j')) - SECONDS_1DAY);
        $date_init = get_parameter('date_init', date(DATE_FORMAT, $date_init_less));
        $time_init = get_parameter('time_init', date(TIME_FORMAT, $date_init_less));
        $datetime_init = strtotime($date_init.' '.$time_init);
        $date_end = (string) get_parameter('date_end', date(DATE_FORMAT));
        $time_end = (string) get_parameter('time_end', date(TIME_FORMAT));
        $datetime_end = strtotime($date_end.' '.$time_end);

        if ($datetime_init >= $datetime_end) {
            $datetime_init = $date_init_less;
        }

        $unixdate = $datetime_end;
        $period = ($unixdate - $datetime_init);
    } else if ($custom_date === '2') {
        $unixdate = strtotime('now');
        $date_units = get_parameter('date_units');
        $date_start = date('Y/m/d H:i:s', ($unixdate - ($date_text * $date_units)));
        $period = ($unixdate - strtotime($date_start));
    } else if (in_array($date, ['this_week', 'this_month', 'past_week', 'past_month'])) {
        if ($date === 'this_week') {
            $monday = date('Y/m/d 00:00:00', strtotime('Monday this week'));
            $sunday = date('Y/m/d 23:59:59', strtotime($monday.' +6 days'));
            $period = (strtotime($sunday) - strtotime($monday));
            $unixdate = strtotime($sunday);
        } else if ($date === 'this_month') {
            $unixdate = strtotime('last day of this month');
            $first_of_month = date('Y/m/d', strtotime('first day of this month'));
            $period = ($unixdate - strtotime($first_of_month));
        } else if ($date === 'past_month') {
            $unixdate = strtotime('last day of previous month');
            $first_of_month = date('Y/m/d', strtotime('first day of previous month'));
            $period = ($unixdate - strtotime($first_of_month));
        } else if ($date === 'past_week') {
            $unixdate = strtotime('sunday', strtotime('last week'));
            $first_of_week = date('Y-m-d', strtotime('monday', strtotime('last week')));
            $period = ($unixdate - strtotime($first_of_week));
        }
    } else {
        $unixdate = strtotime('now');
        $date_start = date('Y/m/d H:i:s', ($unixdate - $date));
        $period = ($unixdate - strtotime($date_start));
    }

    $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, '', '', 0, 10, true, 'width:100%')
        );
    $searchForm .= '</td>';*/

    $searchForm .= '<td class="w25p">'.html_print_label_input_block(__('Date'), html_print_select_date_range('date', true)).'</td>';
    $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
    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>';
}