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<?php
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namespace Moko\Plugin\System\MokoSuiteField\Helper;
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defined('_JEXEC') or die;
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use Joomla\CMS\Factory;
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use Joomla\Database\DatabaseInterface;
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/**
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* Customer satisfaction — post-service surveys, NPS scoring, technician ratings.
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*/
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class CustomerSatisfactionHelper
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{
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/**
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* Record a post-service survey response.
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*/
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public static function recordSurvey(int $workOrderId, int $contactId, int $rating, ?string $comment = null): object
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{
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if ($rating < 1 || $rating > 5) {
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throw new \InvalidArgumentException('Rating must be 1-5.');
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}
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$db = Factory::getContainer()->get(DatabaseInterface::class);
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// Prevent duplicate surveys per work order
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$db->setQuery($db->getQuery(true)
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->select('id')
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->from('#__mokosuitefield_surveys')
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->where('work_order_id = ' . (int) $workOrderId)
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->where('contact_id = ' . (int) $contactId));
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if ($db->loadResult()) {
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return (object) ['success' => false, 'error' => 'Survey already submitted for this work order'];
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}
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$filter = \Joomla\Filter\InputFilter::getInstance();
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$survey = (object) [
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'work_order_id' => $workOrderId,
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'contact_id' => $contactId,
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'rating' => $rating,
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'comment' => $comment !== null ? $filter->clean($comment, 'STRING') : null,
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'nps_score' => $rating >= 4 ? 'promoter' : ($rating >= 3 ? 'passive' : 'detractor'),
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'created_at' => Factory::getDate()->toSql(),
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];
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$db->insertObject('#__mokosuitefield_surveys', $survey, 'id');
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return (object) ['success' => true, 'survey_id' => (int) $survey->id];
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}
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/**
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* Get NPS (Net Promoter Score) for a period.
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*/
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public static function getNps(string $from = '', string $to = ''): object
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{
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$from = $from ?: date('Y-01-01');
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$to = $to ?: date('Y-m-d');
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if (!\DateTime::createFromFormat('Y-m-d', $from) || !\DateTime::createFromFormat('Y-m-d', $to)) {
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throw new \InvalidArgumentException('Date parameters must be Y-m-d format.');
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}
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$db = Factory::getContainer()->get(DatabaseInterface::class);
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$db->setQuery($db->getQuery(true)
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->select('COUNT(*) AS total_responses')
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->select('SUM(CASE WHEN rating >= 4 THEN 1 ELSE 0 END) AS promoters')
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->select('SUM(CASE WHEN rating = 3 THEN 1 ELSE 0 END) AS passives')
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->select('SUM(CASE WHEN rating <= 2 THEN 1 ELSE 0 END) AS detractors')
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->select('AVG(rating) AS avg_rating')
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->from('#__mokosuitefield_surveys')
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->where('DATE(created_at) BETWEEN ' . $db->quote($from) . ' AND ' . $db->quote($to)));
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$stats = $db->loadObject();
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$total = (int) ($stats->total_responses ?? 0);
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$promoterPct = $total > 0 ? (int) $stats->promoters / $total * 100 : 0;
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$detractorPct = $total > 0 ? (int) $stats->detractors / $total * 100 : 0;
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return (object) [
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'nps' => round($promoterPct - $detractorPct),
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'total_responses' => $total,
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'promoters' => (int) ($stats->promoters ?? 0),
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'passives' => (int) ($stats->passives ?? 0),
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'detractors' => (int) ($stats->detractors ?? 0),
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'avg_rating' => round((float) ($stats->avg_rating ?? 0), 1),
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];
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}
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/**
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* Get technician satisfaction rankings.
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*/
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public static function getTechnicianRankings(int $limit = 20): array
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{
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$db = Factory::getContainer()->get(DatabaseInterface::class);
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$db->setQuery($db->getQuery(true)
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->select('t.id AS tech_id, cd.name AS tech_name')
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->select('COUNT(s.id) AS survey_count')
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->select('AVG(s.rating) AS avg_rating')
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->select('SUM(CASE WHEN s.rating >= 4 THEN 1 ELSE 0 END) AS five_star_count')
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->from($db->quoteName('#__mokosuitefield_surveys', 's'))
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->join('INNER', $db->quoteName('#__mokosuitefield_work_orders', 'wo') . ' ON wo.id = s.work_order_id')
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->join('INNER', $db->quoteName('#__mokosuitefield_technicians', 't') . ' ON t.id = wo.tech_id')
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->join('LEFT', $db->quoteName('#__contact_details', 'cd') . ' ON cd.id = t.contact_id')
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->group('t.id, cd.name')
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->having('COUNT(s.id) >= 3')
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->order('avg_rating DESC'), 0, min(max(1, $limit), 100));
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$results = $db->loadObjectList() ?: [];
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foreach ($results as &$r) {
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$r->avg_rating = round((float) $r->avg_rating, 1);
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}
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return $results;
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}
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}
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