<?php
// Pandora FMS - http://pandorafms.com
// ==================================================
// Copyright (c) 2005-2010 Artica Soluciones Tecnologicas
// Please see http://pandorafms.org 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.
class Alerts
{

    private $correct_acl = false;

    private $acl = 'LM';

    private $default = true;

    private $default_filters = [];

    private $free_search = '';

    private $group = 0;

    private $status = 'all';

    private $standby = -1;

    private $id_agent = 0;

    private $all_alerts = false;

    private $alert_status_items = null;

    private $alert_standby_items = null;

    private $columns = null;


    function __construct()
    {
        $this->alert_status_items = [
            'all_enabled' => __('All (Enabled)'),
            'all'         => __('All'),
            'fired'       => __('Fired'),
            'notfired'    => __('Not fired'),
            'disabled'    => __('Disabled'),
        ];

        $this->alert_standby_items = [
            '-1' => __('All'),
            '1'  => __('Standby on'),
            '0'  => __('Standby off'),
        ];

        $this->columns = ['agent' => 1];

        $system = System::getInstance();

        if ($system->checkACL($this->acl)) {
            $this->correct_acl = true;
        } else {
            $this->correct_acl = false;
        }
    }


    private function alertsGetFilters()
    {
        $system = System::getInstance();
        $user = User::getInstance();

        $this->default_filters['standby'] = true;
        $this->default_filters['group'] = true;
        $this->default_filters['status'] = true;
        $this->default_filters['free_search'] = true;

        $this->free_search = $system->getRequest('free_search', '');
        if ($this->free_search != '') {
            $this->default = false;
            $this->default_filters['free_search'] = false;
        }

        $this->status = $system->getRequest('status', __('Status'));
        if (($this->status === __('Status')) || ($this->status == 'all')) {
            $this->status = 'all';
        } else {
            $this->default = false;
            $this->default_filters['status'] = false;
        }

        $this->group = $system->getRequest('group', __('Group'));
        if (!$user->isInGroup($this->acl, $this->group)) {
            $this->group = 0;
        }

        if (($this->group === __('Group')) || ($this->group == 0)) {
            $this->group = 0;
        } else {
            $this->default = false;
            $this->default_filters['group'] = false;
        }

        $this->standby = $system->getRequest('standby', __('Stand by'));
        if (($this->standby === __('Stand by')) || ($this->standby == -1)) {
            $this->standby = -1;
        } else {
            $this->default = false;
            $this->default_filters['standby'] = false;
        }
    }


    public function setFilters($filters)
    {
        if (isset($filters['id_agent'])) {
            $this->id_agent = $filters['id_agent'];
        }

        if (isset($filters['all_alerts'])) {
            $this->all_alerts = $filters['all_alerts'];
        }
    }


    public function ajax($parameter2=false)
    {
        $system = System::getInstance();

        if (!$this->correct_acl) {
            return;
        } else {
            switch ($parameter2) {
                case 'xxxx':
                break;
            }
        }
    }


    public function show()
    {
        if (!$this->correct_acl) {
            $this->show_fail_acl();
        } else {
            $this->alertsGetFilters();
            $this->show_alerts();
        }
    }


    private function show_fail_acl()
    {
        $error['type'] = 'onStart';
        $error['title_text'] = __('You don\'t have access to this page');
        $error['content_text'] = System::getDefaultACLFailText();
        if (class_exists('HomeEnterprise')) {
            $home = new HomeEnterprise();
        } else {
            $home = new Home();
        }

        $home->show($error);
    }


    private function show_alerts()
    {
        $ui = Ui::getInstance();

        $ui->createPage();
        $ui->createDefaultHeader(
            __('Alerts'),
            $ui->createHeaderButton(
                [
                    'icon' => 'back',
                    'pos'  => 'left',
                    'text' => __('Back'),
                    'href' => 'index.php?page=home',
                ]
            )
        );
        $ui->showFooter(false);
        $ui->beginContent();
            $filter_title = sprintf(
                __('Filter Alerts by %s'),
                $this->filterAlertsGetString()
            );
            $ui->contentBeginCollapsible($filter_title);
                $ui->beginForm();
                    $options = [
                        'name'  => 'page',
                        'type'  => 'hidden',
                        'value' => 'alerts',
                    ];
                    $ui->formAddInput($options);

                    $system = System::getInstance();
                    $groups = users_get_groups_for_select(
                        $system->getConfig('id_user'),
                        'ER',
                        true,
                        true,
                        false,
                        'id_grupo'
                    );
                    $options = [
                        'name'     => 'group',
                        'title'    => __('Group'),
                        'label'    => __('Group'),
                        'items'    => $groups,
                        'selected' => $this->group,
                    ];
                    $ui->formAddSelectBox($options);

                    $options = [
                        'name'        => 'free_search',
                        'value'       => $this->free_search,
                        'placeholder' => __('Free search'),
                    ];
                    $ui->formAddInputSearch($options);

                    $options = [
                        'name'     => 'status',
                        'title'    => __('Status'),
                        'label'    => __('Status'),
                        'items'    => $this->alert_status_items,
                        'selected' => $this->status,
                    ];
                    $ui->formAddSelectBox($options);

                    $options = [
                        'name'     => 'standby',
                        'title'    => __('Stand by'),
                        'label'    => __('Stand by'),
                        'items'    => $this->alert_standby_items,
                        'selected' => $this->standby,
                    ];
                    $ui->formAddSelectBox($options);

                    $options = [
                        'icon'     => 'refresh',
                        'icon_pos' => 'right',
                        'text'     => __('Apply Filter'),
                    ];
                    $ui->formAddSubmitButton($options);

                    $html = $ui->getEndForm();
                    $ui->contentCollapsibleAddItem($html);
                    $ui->contentEndCollapsible();
                    $this->listAlertsHtml();
                    $ui->endContent();
                    $ui->showPage();
    }


    public function disabledColumns($columns=null)
    {
        if (!empty($columns)) {
            foreach ($columns as $column) {
                unset($this->columns[$column]);
            }
        }
    }


    public function listAlertsHtml($return=false)
    {
        $countAlerts = alerts_get_alerts(
            $this->group,
            $this->free_search,
            $this->status,
            $this->standby,
            'AR',
            true,
            $this->id_agent
        );

        $alerts = alerts_get_alerts(
            $this->group,
            $this->free_search,
            $this->status,
            $this->standby,
            'AR',
            false,
            $this->id_agent
        );
        if (empty($alerts)) {
            $alerts = [];
        }

        $table = [];
        foreach ($alerts as $alert) {
            if ($alert['alert_disabled']) {
                $disabled_style = "<i style='color: grey;'>%s</i>";
            } else {
                $disabled_style = '%s';
            }

            if ($alert['times_fired'] > 0) {
                $status = STATUS_ALERT_FIRED;
                $title = __('Alert fired').' '.$alert['internal_counter'].' '.__('time(s)');
            } else if ($alert['disabled'] > 0) {
                $status = STATUS_ALERT_DISABLED;
                $title = __('Alert disabled');
            } else {
                $status = STATUS_ALERT_NOT_FIRED;
                $title = __('Alert not fired');
            }

            $row = [];
            if (isset($this->columns['agent']) && $this->columns['agent']) {
                $row[__('Agent')] = sprintf($disabled_style, io_safe_output($alert['agent_alias']));
            }

            $row[__('Module')] = sprintf(
                $disabled_style,
                io_safe_output($alert['module_name'])
            );
            $row[__('Template')] = sprintf(
                $disabled_style,
                io_safe_output($alert['template_name'])
            );
            $row[__('Last Fired')] = sprintf(
                $disabled_style,
                ui_print_timestamp($alert['last_fired'], true)
            );
            $row[__('Status')] = ui_print_status_image($status, $title, true);

            $table[] = $row;
        }

        $ui = UI::getInstance();
        if (empty($table)) {
            $html = '<p class="empty_advice">'.__('No alerts').'</p>';
            if (!$return) {
                $ui->contentAddHtml($html);
            } else {
                return $html;
            }
        } else {
            $tableHTML = new Table();
            $tableHTML->id = 'list_alerts';
            $tableHTML->importFromHash($table);
            if (!$return) {
                $ui->contentAddHtml($tableHTML->getHTML());
            } else {
                return $tableHTML->getHTML();
            }
        }
    }


    private function filterAlertsGetString()
    {
        if ($this->default) {
            return __('(Default)');
        } else {
            $filters_to_serialize = [];

            if (!$this->default_filters['standby']) {
                $filters_to_serialize[] = sprintf(
                    __('Standby: %s'),
                    $this->alert_standby_items[$this->standby]
                );
            }

            if (!$this->default_filters['group']) {
                $filters_to_serialize[] = sprintf(
                    __('Group: %s'),
                    groups_get_name($this->group, true)
                );
            }

            if (!$this->default_filters['status']) {
                $filters_to_serialize[] = sprintf(
                    __('Status: %s'),
                    $this->alert_status_items[$this->status]
                );
            }

            if (!$this->default_filters['free_search']) {
                $filters_to_serialize[] = sprintf(
                    __('Free Search: %s'),
                    $this->free_search
                );
            }

            $string = '('.implode(' - ', $filters_to_serialize).')';

            return $string;

            // ~ $status_text = $this->alert_status_items[$this->status];
            // ~ $standby_text = $this->alert_standby_items[$this->standby];
            // ~ $group_text = groups_get_name($this->group, true);
            // ~ return sprintf(__('(Status: %s - Standby: %s - Group: %s - Free Search: %s)'),
                // ~ $status_text, $standby_text, $group_text, $this->free_search);
        }
    }


}