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<?php

/**
 * Function eventHasAValidCi
 *
 * @param array $event Event to check for a valid CI.
 *
 * @return bool|null
 */
private function _eventHasAValidCi($event)
{
    $target = $this->_targetModel->getTarget($event['targetId']);

    if ($target === false) {
        $this->_log->error(__METHOD__ . ' there was NO target in EMS.');

        return false;
    }

    $sql = 'SELECT name FROM monitors WHERE monitor_id=' . $event['monitorId'];

    $this->_log->info(__METHOD__ . ' ' . $sql);

    $monitor = $this->_db->fetchOne($sql);

    /** @var mixed $CI */
    $CI = false;

    /** @var string $targetUsed */
    $targetUsed = '';

    try {
        if (!empty($event['targetCi'])) {
            $CI = $this->_servicenow->getCiFromTarget($event['targetCi']);
            $targetUsed = $event['targetCi'];
        }
        if ($CI === false && !empty($event['targetName'])) {
            $CI = $this->_servicenow->getCiFromMonitorName($event['targetName']);
            $targetUsed = $event['targetName'];
        }
        if ($CI === false && !empty($event['targetName'])) {
            $CI = $this->_servicenow->getCiFromTarget($event['targetName']);
            $targetUsed = $event['targetName'];
        }
        if ($CI === false && !empty($event['targetHost'])) {
            $CI = $this->_servicenow->getCiFromTarget($event['targetHost']);
            $targetUsed = $event['targetHost'];
        }
        if ($CI === false && !empty($event['targetHint'])) {
            $CI = $this->_servicenow->getCiFromTarget($event['targetHint']);
            $targetUsed = $event['targetHint'];
        }
        if ($CI === false && !empty($monitor['name'])) {
            $CI = $this->_servicenow->getCiFromMonitorName($monitor['name']);
            $targetUsed = $monitor['name'];
        }
    } catch(\Exception $e) {
        $this->_log->error($e->getCode().':'.$e->getMessage());
    }

    if (empty($CI)) {
        $this->_log->error(__METHOD__ . ' there was NO CI found in ServiceNow.');

        return false;
    }

    if (count($CI->result) === 0) {
        $this->_log->error(__METHOD__ . ' there was NO CI found in ServiceNow.');

        return false;
    }

    $this->_processConfigurationItems(
        $CI->result,
        $targetUsed,
        $target
    );

    return $target;
}

/**
 * Function processConfigurationItems
 *
 * @param array                   $ciList
 * @param string                  $targetUsed
 * @param \objects\targets\Target $target
 * @return bool
 *
 * @access private
 */
private function _processConfigurationItems($ciList, $targetUsed, $target)
{
    $numInCiList = count($ciList);
    $ciHit = [];
    $ciTwoPartials = false;
    $ciPartialMatch = false;
    $ciExactMatch = false;

    for ($i = 0; $i < $numInCiList; $i++) {
        if ($ciList[$i]->u_phase === 'Commissioned') {
            if (strcasecmp($targetUsed, $ciList[$i]->name) === 0) {
                if ($ciExactMatch === true) {
                    $this->_log->error(
                        __METHOD__ . ' two exact CI matches found.'
                    );

                    return false; // Two exact matches, bad news
                }
                $ciHit = $ciList[$i];
                $ciExactMatch = true;
                $this->_log->info(__METHOD__ . ' an exact CI match found.');
            } elseif (stripos($ciList[$i]->name, $targetUsed) === 0
                && $ciExactMatch === false
            ) {
                if ($ciPartialMatch === true) {
                    // Two partial prefix matches, bad news
                    $this->_log->error(
                        __METHOD__ .
                        ' two partial prefix CI matches found, continuing'
                    );
                    $ciTwoPartials = true;
                    continue;
                }
                $ciHit = $ciList[$i];
                $ciPartialMatch = true;
                $this->_log->info(__METHOD__ . ' a partial prefix CI match found.');
            }
        }
    }

    if ($ciTwoPartials === true && $ciExactMatch !== true) {
        $this->_log->error(
            __METHOD__ . ' two partial prefix CI matches found, returning false'
        );

        return false;
    }

    if (isset($event['targetName'])) {
        $target->lookupName = $event['targetName'];
    }
    if (isset($event['targetHost'])) {
        $target->lookupHost = $event['targetHost'];
    }
    if (isset($event['targetHint'])) {
        $target->lookupHint = $event['targetHint'];
    }
    if (isset($ciHit->{'support_group.name'})) {
        $target->ownerQueue = $ciHit->{'support_group.name'};
    }
    if (isset($ciHit->name)) {
        $target->ciName = $ciHit->name;
        $target->ciLogicalName = $ciHit->{'sys_id'};
    }
    if (isset($ciHit->u_monitoring_notification_mode)) {
        $target->notifyModel = $ciHit->u_monitoring_notification_mode;
    }
    if (isset($ciHit->used_for)) {
        $target->environment = $ciHit->used_for;
    }

    $target->kb = '';
    $this->_targetModel->updateTarget($target);
}