<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */

namespace Icinga\Module\Monitoring\Backend\Ido\Query;

/**
 * Query for service status
 */
class ServicestatusQuery extends IdoQuery
{
    /**
     * {@inheritdoc}
     */
    protected $allowCustomVars = true;

    /**
     * {@inheritdoc}
     */
    protected $groupBase = array('services' => array('so.object_id', 's.service_id'));

    /**
     * {@inheritdoc}
     */
    protected $groupOrigin = array('hostgroups', 'servicegroups');

    protected $subQueryTargets = array(
        'hostgroups'    => 'hostgroup',
        'servicegroups' => 'servicegroup'
    );

    /**
     * {@inheritdoc}
     */
    protected $columnMap = array(
        'checktimeperiods' => array(
            'service_check_timeperiod' => 'ctp.alias COLLATE latin1_general_ci'
        ),
        'hostgroups' => array(
            'hostgroup'         => 'hgo.name1 COLLATE latin1_general_ci',
            'hostgroup_alias'   => 'hg.alias COLLATE latin1_general_ci',
            'hostgroup_name'    => 'hgo.name1'
        ),
        'hosts' => array(
            'host_action_url'       => 'h.action_url',
            'host_address'          => 'h.address',
            'host_address6'         => 'h.address6',
            'host_alias'            => 'h.alias COLLATE latin1_general_ci',
            'host_display_name'     => 'h.display_name COLLATE latin1_general_ci',
            'host_icon_image'       => 'h.icon_image',
            'host_icon_image_alt'   => 'h.icon_image_alt',
            'host_ipv4'             => 'INET_ATON(h.address)',
            'host_notes'            => 'h.notes',
            'host_notes_url'        => 'h.notes_url'
        ),
        'hoststatus' => array(
            'host_acknowledged'                     => 'hs.problem_has_been_acknowledged',
            'host_acknowledgement_type'             => 'hs.acknowledgement_type',
            'host_active_checks_enabled'            => 'hs.active_checks_enabled',
            'host_active_checks_enabled_changed'    => 'CASE WHEN hs.active_checks_enabled = h.active_checks_enabled THEN 0 ELSE 1 END',
            'host_attempt'                          => 'hs.current_check_attempt || \'/\' || hs.max_check_attempts',
            'host_check_command'                    => 'hs.check_command',
            'host_check_execution_time'             => 'hs.execution_time',
            'host_check_latency'                    => 'hs.latency',
            'host_check_source'                     => 'hs.check_source',
            'host_check_timeperiod_object_id'       => 'hs.check_timeperiod_object_id',
            'host_check_type'                       => 'hs.check_type',
            'host_current_check_attempt'            => 'hs.current_check_attempt',
            'host_current_notification_number'      => 'hs.current_notification_number',
            'host_event_handler'                    => 'hs.event_handler',
            'host_event_handler_enabled'            => 'hs.event_handler_enabled',
            'host_event_handler_enabled_changed'    => 'CASE WHEN hs.event_handler_enabled = h.event_handler_enabled THEN 0 ELSE 1 END',
            'host_failure_prediction_enabled'       => 'hs.failure_prediction_enabled',
            'host_flap_detection_enabled'           => 'hs.flap_detection_enabled',
            'host_flap_detection_enabled_changed'   => 'CASE WHEN hs.flap_detection_enabled = h.flap_detection_enabled THEN 0 ELSE 1 END',
            'host_handled'                          => 'CASE WHEN (hs.problem_has_been_acknowledged + hs.scheduled_downtime_depth) > 0 THEN 1 ELSE 0 END',
            'host_hard_state'                       => 'CASE WHEN hs.has_been_checked = 0 OR hs.has_been_checked IS NULL THEN 99 ELSE CASE WHEN hs.state_type = 1 THEN hs.current_state ELSE hs.last_hard_state END END',
            'host_in_downtime'                      => 'CASE WHEN (hs.scheduled_downtime_depth = 0) THEN 0 ELSE 1 END',
            'host_is_flapping'                      => 'hs.is_flapping',
            'host_is_reachable'                     => 'hs.is_reachable',
            'host_last_check'                       => 'UNIX_TIMESTAMP(hs.last_check)',
            'host_last_hard_state'                  => 'hs.last_hard_state',
            'host_last_hard_state_change'           => 'UNIX_TIMESTAMP(hs.last_hard_state_change)',
            'host_last_notification'                => 'UNIX_TIMESTAMP(hs.last_notification)',
            'host_last_state_change'                => 'UNIX_TIMESTAMP(hs.last_state_change)',
            'host_last_time_down'                   => 'UNIX_TIMESTAMP(hs.last_time_down)',
            'host_last_time_unreachable'            => 'UNIX_TIMESTAMP(hs.last_time_unreachable)',
            'host_last_time_up'                     => 'UNIX_TIMESTAMP(hs.last_time_up)',
            'host_long_output'                      => 'hs.long_output',
            'host_max_check_attempts'               => 'hs.max_check_attempts',
            'host_modified_host_attributes'         => 'hs.modified_host_attributes',
            'host_next_check'                       => 'CASE hs.should_be_scheduled WHEN 1 THEN UNIX_TIMESTAMP(hs.next_check) ELSE NULL END',
            'host_next_notification'                => 'UNIX_TIMESTAMP(hs.next_notification)',
            'host_no_more_notifications'            => 'hs.no_more_notifications',
            'host_normal_check_interval'            => 'hs.normal_check_interval',
            'host_notifications_enabled'            => 'hs.notifications_enabled',
            'host_notifications_enabled_changed'    => 'CASE WHEN hs.notifications_enabled = h.notifications_enabled THEN 0 ELSE 1 END',
            'host_obsessing'                        => 'hs.obsess_over_host',
            'host_obsessing_changed'                => 'CASE WHEN hs.obsess_over_host = h.obsess_over_host THEN 0 ELSE 1 END',
            'host_output'                           => 'hs.output',
            'host_passive_checks_enabled'           => 'hs.passive_checks_enabled',
            'host_passive_checks_enabled_changed'   => 'CASE WHEN hs.passive_checks_enabled = h.passive_checks_enabled THEN 0 ELSE 1 END',
            'host_percent_state_change'             => 'hs.percent_state_change',
            'host_perfdata'                         => 'hs.perfdata',
            'host_problem'                          => 'CASE WHEN COALESCE(hs.current_state, 0) = 0 THEN 0 ELSE 1 END',
            'host_problem_has_been_acknowledged'    => 'hs.problem_has_been_acknowledged',
            'host_process_performance_data'         => 'hs.process_performance_data',
            'host_retry_check_interval'             => 'hs.retry_check_interval',
            'host_scheduled_downtime_depth'         => 'hs.scheduled_downtime_depth',
            'host_severity'                         => '
                CASE
                    WHEN hs.has_been_checked = 0 OR hs.has_been_checked IS NULL
                    THEN 16
                ELSE
                    CASE
                        WHEN hs.current_state = 0
                        THEN 1
                    ELSE
                        CASE
                            WHEN hs.current_state = 1 THEN 64
                            WHEN hs.current_state = 2 THEN 32
                            ELSE 256
                        END
                        +
                        CASE
                            WHEN hs.problem_has_been_acknowledged = 1 THEN 2
                            WHEN hs.scheduled_downtime_depth > 0 THEN 1
                            ELSE 256
                        END
                    END
                END',
            'host_state'                            => 'CASE WHEN hs.has_been_checked = 0 OR hs.has_been_checked IS NULL THEN 99 ELSE hs.current_state END',
            'host_state_type'                       => 'hs.state_type',
            'host_status_update_time'               => 'hs.status_update_time',
            'host_unhandled'                        => 'CASE WHEN (hs.problem_has_been_acknowledged + hs.scheduled_downtime_depth) = 0 THEN 1 ELSE 0 END'

        ),
        'instances' => array(
            'instance_name' => 'i.instance_name'
        ),
        'services' => array(
            'host'                      => 'so.name1 COLLATE latin1_general_ci',
            'host_name'                 => 'so.name1',
            'object_type'               => '(\'service\')',
            'service'                   => 'so.name2 COLLATE latin1_general_ci',
            'service_action_url'        => 's.action_url',
            'service_check_interval'    => '(s.check_interval * 60)',
            'service_description'       => 'so.name2',
            'service_display_name'      => 's.display_name COLLATE latin1_general_ci',
            'service_host'              => 'so.name1 COLLATE latin1_general_ci',
            'service_host_name'         => 'so.name1',
            'service_icon_image'        => 's.icon_image',
            'service_icon_image_alt'    => 's.icon_image_alt',
            'service_notes_url'         => 's.notes_url',
            'service_notes'             => 's.notes'
        ),
        'servicegroups' => array(
            'servicegroup'          => 'sgo.name1 COLLATE latin1_general_ci',
            'servicegroup_name'     => 'sgo.name1',
            'servicegroup_alias'    => 'sg.alias COLLATE latin1_general_ci'
        ),
        'servicestatus' => array(
            'service_acknowledged'                      => 'ss.problem_has_been_acknowledged',
            'service_acknowledgement_type'              => 'ss.acknowledgement_type',
            'service_active_checks_enabled'             => 'ss.active_checks_enabled',
            'service_active_checks_enabled_changed'     => 'CASE WHEN ss.active_checks_enabled=s.active_checks_enabled THEN 0 ELSE 1 END',
            'service_attempt'                           => 'ss.current_check_attempt || \'/\' || ss.max_check_attempts',
            'service_check_command'                     => 'ss.check_command',
            'service_check_execution_time'              => 'ss.execution_time',
            'service_check_latency'                     => 'ss.latency',
            'service_check_source'                      => 'ss.check_source',
            'service_check_timeperiod_object_id'        => 'ss.check_timeperiod_object_id',
            'service_check_type'                        => 'ss.check_type',
            'service_current_check_attempt'             => 'ss.current_check_attempt',
            'service_current_notification_number'       => 'ss.current_notification_number',
            'service_event_handler'                     => 'ss.event_handler',
            'service_event_handler_enabled'             => 'ss.event_handler_enabled',
            'service_event_handler_enabled_changed'     => 'CASE WHEN ss.event_handler_enabled=s.event_handler_enabled THEN 0 ELSE 1 END',
            'service_failure_prediction_enabled'        => 'ss.failure_prediction_enabled',
            'service_flap_detection_enabled'            => 'ss.flap_detection_enabled',
            'service_flap_detection_enabled_changed'    => 'CASE WHEN ss.flap_detection_enabled=s.flap_detection_enabled THEN 0 ELSE 1 END',
            'service_handled'                           => 'CASE WHEN (ss.problem_has_been_acknowledged + ss.scheduled_downtime_depth + COALESCE(hs.current_state, 0)) > 0 THEN 1 ELSE 0 END',
            'service_hard_state'                        => 'CASE WHEN ss.has_been_checked = 0 OR ss.has_been_checked IS NULL THEN 99 ELSE CASE WHEN ss.state_type = 1 THEN ss.current_state ELSE ss.last_hard_state END END',
            'service_in_downtime'                       => 'CASE WHEN (ss.scheduled_downtime_depth = 0 OR ss.scheduled_downtime_depth IS NULL) THEN 0 ELSE 1 END',
            'service_is_flapping'                       => 'ss.is_flapping',
            'service_is_passive_checked'                => 'CASE WHEN ss.active_checks_enabled = 0 AND ss.passive_checks_enabled = 1 THEN 1 ELSE 0 END',
            'service_is_reachable'                      => 'ss.is_reachable',
            'service_last_check'                        => 'UNIX_TIMESTAMP(ss.last_check)',
            'service_last_hard_state'                   => 'ss.last_hard_state',
            'service_last_hard_state_change'            => 'UNIX_TIMESTAMP(ss.last_hard_state_change)',
            'service_last_notification'                 => 'UNIX_TIMESTAMP(ss.last_notification)',
            'service_last_state_change'                 => 'UNIX_TIMESTAMP(ss.last_state_change)',
            'service_last_state_change_ts'              => 'ss.last_state_change',
            'service_last_time_critical'                => 'ss.last_time_critical',
            'service_last_time_ok'                      => 'ss.last_time_ok',
            'service_last_time_unknown'                 => 'ss.last_time_unknown',
            'service_last_time_warning'                 => 'ss.last_time_warning',
            'service_long_output'                       => 'ss.long_output',
            'service_max_check_attempts'                => 'ss.max_check_attempts',
            'service_modified_service_attributes'       => 'ss.modified_service_attributes',
            'service_next_check'                        => 'UNIX_TIMESTAMP(ss.next_check)',
            'service_next_notification'                 => 'UNIX_TIMESTAMP(ss.next_notification)',
            'service_next_update'                       => 'CASE WHEN ss.has_been_checked = 0 OR ss.has_been_checked IS NULL
            THEN
                NULL
            ELSE
                UNIX_TIMESTAMP(ss.last_check)
                + CASE WHEN
                    COALESCE(ss.current_state, 0) > 0 AND ss.state_type = 0
                THEN
                    ss.retry_check_interval
                ELSE
                    ss.normal_check_interval
                END * 60 * 2
                + CEIL(ss.execution_time)
            END',
            'service_no_more_notifications'             => 'ss.no_more_notifications',
            'service_normal_check_interval'             => 'ss.normal_check_interval',
            'service_notifications_enabled'             => 'ss.notifications_enabled',
            'service_notifications_enabled_changed'     => 'CASE WHEN ss.notifications_enabled=s.notifications_enabled THEN 0 ELSE 1 END',
            'service_obsessing'                         => 'ss.obsess_over_service',
            'service_obsessing_changed'                 => 'CASE WHEN ss.obsess_over_service=s.obsess_over_service THEN 0 ELSE 1 END',
            'service_output'                            => 'ss.output',
            'service_passive_checks_enabled'            => 'ss.passive_checks_enabled',
            'service_passive_checks_enabled_changed'    => 'CASE WHEN ss.passive_checks_enabled=s.passive_checks_enabled THEN 0 ELSE 1 END',
            'service_percent_state_change'              => 'ss.percent_state_change',
            'service_perfdata'                          => 'ss.perfdata',
            'service_problem'                           => 'CASE WHEN COALESCE(ss.current_state, 0) = 0 THEN 0 ELSE 1 END',
            'service_problem_has_been_acknowledged'     => 'ss.problem_has_been_acknowledged',
            'service_process_performance_data'          => 'ss.process_performance_data',
            'service_retry_check_interval'              => 'ss.retry_check_interval',
            'service_scheduled_downtime_depth'          => 'ss.scheduled_downtime_depth',
            'service_severity'                          => 'CASE WHEN ss.current_state = 0
            THEN
                CASE WHEN ss.has_been_checked = 0 OR ss.has_been_checked IS NULL
                     THEN 16
                     ELSE 0
                END
                +
                CASE WHEN ss.problem_has_been_acknowledged = 1
                     THEN 2
                     ELSE
                        CASE WHEN ss.scheduled_downtime_depth > 0
                            THEN 1
                            ELSE 4
                        END
                END
            ELSE
                CASE WHEN ss.has_been_checked = 0 OR ss.has_been_checked IS NULL THEN 16
                     WHEN ss.current_state = 1 THEN 32
                     WHEN ss.current_state = 2 THEN 128
                     WHEN ss.current_state = 3 THEN 64
                     ELSE 256
                END
                +
                CASE WHEN hs.current_state > 0
                     THEN 1024
                     ELSE
                         CASE WHEN ss.problem_has_been_acknowledged = 1
                              THEN 512
                              ELSE
                                 CASE WHEN ss.scheduled_downtime_depth > 0
                                     THEN 256
                                     ELSE 2048
                                 END
                         END
                     END
            END',
            'service_state'                             => 'CASE WHEN ss.has_been_checked = 0 OR ss.has_been_checked IS NULL THEN 99 ELSE ss.current_state END',
            'service_state_type'                        => 'ss.state_type',
            'service_status_update_time'                => 'ss.status_update_time',
            'service_unhandled'                         => 'CASE WHEN (ss.problem_has_been_acknowledged + ss.scheduled_downtime_depth + COALESCE(hs.current_state, 0)) = 0 THEN 1 ELSE 0 END',
            'problems'                                  => 'CASE WHEN COALESCE(ss.current_state, 0) = 0 THEN 0 ELSE 1 END'
        )
    );

    /**
     * {@inheritdoc}
     */
    protected function joinBaseTables()
    {
        if (version_compare($this->getIdoVersion(), '1.10.0', '<')) {
            $this->columnMap['hoststatus']['host_check_source'] = '(NULL)';
            $this->columnMap['servicestatus']['service_check_source'] = '(NULL)';
        }
        if (version_compare($this->getIdoVersion(), '1.13.0', '<')) {
            $this->columnMap['hoststatus']['host_is_reachable'] = '(NULL)';
            $this->columnMap['servicestatus']['service_is_reachable'] = '(NULL)';
        }

        $this->select->from(
            array('so' => $this->prefix . 'objects'),
            array()
        )->join(
            array('s' => $this->prefix . 'services'),
            's.service_object_id = so.object_id AND so.is_active = 1 AND so.objecttype_id = 2',
            array()
        );
        $this->joinedVirtualTables['services'] = true;
    }

    /**
     * Join check time periods
     */
    protected function joinChecktimeperiods()
    {
        $this->select->joinLeft(
            array('ctp' => $this->prefix . 'timeperiods'),
            'ctp.timeperiod_object_id = s.check_timeperiod_object_id',
            array()
        );
    }

    /**
     * Join host groups
     */
    protected function joinHostgroups()
    {
        $this->select->joinLeft(
            array('hgm' => $this->prefix . 'hostgroup_members'),
            'hgm.host_object_id = s.host_object_id',
            array()
        )->joinLeft(
            array('hg' => $this->prefix . 'hostgroups'),
            'hg.hostgroup_id = hgm.hostgroup_id',
            array()
        )->joinLeft(
            array('hgo' => $this->prefix . 'objects'),
            'hgo.object_id = hg.hostgroup_object_id AND hgo.is_active = 1 AND hgo.objecttype_id = 3',
            array()
        );
    }

    /**
     * Join hosts
     */
    protected function joinHosts()
    {
        $this->select->join(
            array('h' => $this->prefix . 'hosts'),
            'h.host_object_id = s.host_object_id',
            array()
        );
    }

    /**
     * Join host status
     */
    protected function joinHoststatus()
    {
        $this->select->join(
            array('hs' => $this->prefix . 'hoststatus'),
            'hs.host_object_id = s.host_object_id',
            array()
        );
    }

    /**
     * Join instances
     */
    protected function joinInstances()
    {
        $this->select->join(
            array('i' => $this->prefix . 'instances'),
            'i.instance_id = so.instance_id',
            array()
        );
    }

    /**
     * Join service groups
     */
    protected function joinServicegroups()
    {
        $this->select->joinLeft(
            array('sgm' => $this->prefix . 'servicegroup_members'),
            'sgm.service_object_id = so.object_id',
            array()
        )->joinLeft(
            array('sg' => $this->prefix . 'servicegroups'),
            'sg.servicegroup_id = sgm.servicegroup_id',
            array()
        )->joinLeft(
            array('sgo' => $this->prefix . 'objects'),
            'sgo.object_id = sg.servicegroup_object_id AND sgo.is_active = 1 AND sgo.objecttype_id = 4',
            array()
        );
    }

    /**
     * Join service status
     */
    protected function joinServicestatus()
    {
        $this->requireVirtualTable('hoststatus');
        $this->select->join(
            array('ss' => $this->prefix . 'servicestatus'),
            'ss.service_object_id = so.object_id',
            array()
        );
    }

    /**
     * {@inheritdoc}
     */
    protected function registerGroupColumns($alias, $table, array &$groupedColumns, array &$groupedTables)
    {
        if ($alias === 'service_handled' || $alias === 'service_severity' || $alias === 'service_unhandled') {
            if (! isset($groupedTables['hoststatus'])) {
                $groupedColumns[] = 'hs.hoststatus_id';
                $groupedTables['hoststatus'] = true;
            }

            if (! isset($groupedTables['servicestatus'])) {
                $groupedColumns[] = 'ss.servicestatus_id';
                $groupedTables['servicestatus'] = true;
            }
        } else {
            parent::registerGroupColumns($alias, $table, $groupedColumns, $groupedTables);
        }
    }

    protected function joinSubQuery(IdoQuery $query, $name, $filter, $and, $negate, &$additionalFilter)
    {
        if ($name === 'hostgroup') {
            $query->joinVirtualTable('members');

            return ['hgm.host_object_id', 's.host_object_id'];
        } elseif ($name === 'servicegroup') {
            $query->joinVirtualTable('members');

            return ['sgm.service_object_id', 'so.object_id'];
        }

        return parent::joinSubQuery($query, $name, $filter, $and, $negate, $additionalFilter);
    }
}
