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<?php
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require_once __DIR__ . '/../../inc/auth.php';
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require_once __DIR__ . '/../../inc/functions.php';
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$session = auth_require('owner', 'engineer');
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if ($_SERVER['REQUEST_METHOD'] !== 'POST' || !auth_csrf_verify($_POST['csrf_token'] ?? '')) {
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header('Location: /service/pages/engineer/tasks.php');
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exit;
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}
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$pdo = getDB();
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$userId = $session['user_id'];
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// Calculate KPI for each engineer
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$engineers = $pdo->query("SELECT id, full_name FROM users WHERE role IN ('engineer','technician') AND is_active=1")->fetchAll();
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$periodStart = date('Y-m-01');
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$periodEnd = date('Y-m-t');
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// Previous period dates
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$prevPeriodStart = date('Y-m-01', strtotime('-1 month'));
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$prevPeriodEnd = date('Y-m-t', strtotime('-1 month'));
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foreach ($engineers as $eng) {
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$eid = $eng['id'];
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// ---- Individual KPI (Engineer Score) ----
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// SLA compliance
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$stmt = $pdo->prepare("SELECT COUNT(*) as total, SUM(CASE WHEN sla_compliant=TRUE THEN 1 ELSE 0 END) as compliant FROM tasks WHERE assigned_to=$1 AND closed_at IS NOT NULL AND closed_at >= $2");
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$stmt->execute([$eid, $periodStart]);
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$sd = $stmt->fetch();
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$slaCompliance = calc_sla_compliance((int)($sd['compliant'] ?? 0), (int)($sd['total'] ?? 0));
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// Response time score
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$stmt = $pdo->prepare("SELECT AVG(response_time_minutes) as avg_rt FROM tasks WHERE assigned_to=? AND closed_at IS NOT NULL AND closed_at >= ?");
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$stmt->execute([$eid, $periodStart]);
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$rt = (float)($stmt->fetchColumn() ?: 0);
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$responseTimeScore = calc_response_time_score($rt / 60, 4);
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// Resolution time score
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$stmt = $pdo->prepare("SELECT AVG(resolution_time_minutes) as avg_ttr FROM tasks WHERE assigned_to=? AND closed_at IS NOT NULL AND closed_at >= ?");
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$stmt->execute([$eid, $periodStart]);
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$ttr = (float)($stmt->fetchColumn() ?: 0);
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$resolutionTimeScore = calc_resolution_time_score($ttr / 60, 8);
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// Diagnosis accuracy
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$stmt = $pdo->prepare("SELECT COUNT(*) as total FROM reports WHERE created_by=? AND created_at >= ?");
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$stmt->execute([$eid, $periodStart]);
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$reportTotal = (int)$stmt->fetchColumn();
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$diagnosisAccuracy = $reportTotal > 0 ? 85 : 75;
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// Reopen rate
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$stmt = $pdo->prepare("SELECT COUNT(*) as reopened FROM tasks WHERE assigned_to=? AND status='completed' AND closed_at IS NOT NULL AND closed_at >= ? AND checklist_data LIKE '%\"fault_found\":1%'");
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$stmt->execute([$eid, $periodStart]);
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$reopened = (int)$stmt->fetchColumn();
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$totalTasks = max(1, $sd['total'] ?? 1);
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$reopenRate = calc_reopen_rate($reopened, $totalTasks);
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$reopenRateScore = max(0, 100 - $reopenRate * 2);
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// Risk coverage score
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$stmt = $pdo->prepare("SELECT COUNT(*) FROM reports WHERE created_by=? AND created_at >= ? AND findings IS NOT NULL AND findings != ''");
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$stmt->execute([$eid, $periodStart]);
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$goodReports = (int)$stmt->fetchColumn();
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$riskCoverageScore = calc_risk_coverage($goodReports, $reportTotal ?: 1);
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// Documentation quality
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$stmt = $pdo->prepare("SELECT COUNT(*) FROM reports WHERE created_by=? AND created_at >= ? AND status='final'");
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$stmt->execute([$eid, $periodStart]);
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$fullReports = (int)$stmt->fetchColumn();
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$docQuality = calc_documentation_quality($fullReports, $reportTotal ?: 1);
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// Engineer score
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$es = calc_engineer_score($slaCompliance, $responseTimeScore, $resolutionTimeScore, $diagnosisAccuracy, $reopenRateScore, $riskCoverageScore);
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$grade = engineer_grade($es);
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// ---- ECS (Engineer Control Score) — для инженеров, управляющих техниками ----
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$ecs = null;
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$ecsComponents = null;
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// Get objects where this engineer is assigned
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$stmt = $pdo->prepare("SELECT object_id FROM object_assignments WHERE user_id=? AND role='engineer' AND unassigned_at IS NULL");
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$stmt->execute([$eid]);
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$engObjectIds = $stmt->fetchAll(PDO::FETCH_COLUMN);
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if (!empty($engObjectIds)) {
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$placeholders = implode(',', array_fill(0, count($engObjectIds), '?'));
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// ECS 1: SLA Control — SLA compliance on tasks across all objects under this engineer
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$stmt = $pdo->prepare("SELECT COUNT(*) as total, SUM(CASE WHEN sla_compliant=TRUE THEN 1 ELSE 0 END) as compliant FROM tasks WHERE object_id IN ($placeholders) AND closed_at IS NOT NULL AND closed_at >= $". (count($engObjectIds) + 1));
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$params = $engObjectIds;
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$params[] = $periodStart;
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$stmt->execute($params);
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$slaCtrl = $stmt->fetch();
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$slaControl = $slaCtrl['total'] > 0 ? ($slaCtrl['compliant'] / $slaCtrl['total']) * 100 : 100;
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// ECS 2: Task Distribution — load balance among technicians on these objects
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$stmt = $pdo->prepare("SELECT assigned_to, COUNT(*) as cnt FROM tasks WHERE object_id IN ($placeholders) AND assigned_to IS NOT NULL AND closed_at >= ? GROUP BY assigned_to");
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$params2 = $engObjectIds;
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$params2[] = $periodStart;
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$stmt->execute($params2);
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$taskDistData = $stmt->fetchAll();
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$tasksPerTech = array_column($taskDistData, 'cnt');
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$taskDist = count($tasksPerTech) > 1 ? max(0, 100 - calc_tlb($tasksPerTech)) : 100;
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// ECS 3: Incident Reduction — compare current vs prev month incidents on these objects
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$stmt = $pdo->prepare("SELECT COUNT(*) FROM incidents WHERE object_id IN ($placeholders) AND created_at >= ? AND created_at <= ?");
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$curParams = $engObjectIds;
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$curParams[] = $periodStart;
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$curParams[] = $periodEnd;
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$stmt->execute($curParams);
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$currentInc = (int)$stmt->fetchColumn();
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$prevParams = $engObjectIds;
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$prevParams[] = $prevPeriodStart;
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$prevParams[] = $prevPeriodEnd;
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$stmt->execute($prevParams);
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$prevInc = (int)$stmt->fetchColumn();
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$incidentRed = calc_incident_reduction($prevInc, $currentInc);
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if ($prevInc === 0 && $currentInc === 0) $incidentRed = 100;
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// ECS 4: Team Performance — avg engineer_score of technicians on these objects
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$techScoreSum = 0;
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$techScoreCount = 0;
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foreach ($taskDistData as $td) {
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$techId = (int)$td['assigned_to'];
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$stmt = $pdo->prepare("SELECT AVG(engineer_score) FROM engineer_kpi WHERE engineer_id=$1 AND period_end > NOW() - INTERVAL '30 days'");
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$stmt->execute([$techId]);
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$ts = (float)$stmt->fetchColumn();
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if ($ts > 0) {
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$techScoreSum += $ts;
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$techScoreCount++;
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}
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}
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$teamPerf = $techScoreCount > 0 ? $techScoreSum / $techScoreCount : 70;
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// ECS 5: Response Coordination — avg response time score across object tasks
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$stmt = $pdo->prepare("SELECT AVG(response_time_minutes) as avg_rt FROM tasks WHERE object_id IN ($placeholders) AND closed_at IS NOT NULL AND closed_at >= ? AND response_time_minutes > 0");
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$respParams = $engObjectIds;
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$respParams[] = $periodStart;
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$stmt->execute($respParams);
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$avgRespTime = (float)($stmt->fetchColumn() ?: 0);
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$responseCoord = calc_response_time_score($avgRespTime / 60, 4);
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$ecs = calc_engineer_control_score($slaControl, $taskDist, $incidentRed, $teamPerf, $responseCoord);
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$ecsComponents = [
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'sla_control' => round($slaControl, 1),
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'task_dist' => round($taskDist, 1),
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'incident_red' => round($incidentRed, 1),
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'team_perf' => round($teamPerf, 1),
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'response_coord' => round($responseCoord, 1),
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];
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}
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// Save
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$components = [
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'sla_compliance' => $slaCompliance,
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'response_time_score' => $responseTimeScore,
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'resolution_time_score'=> $resolutionTimeScore,
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'diagnosis_accuracy' => $diagnosisAccuracy,
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'reopen_rate' => $reopenRate,
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'risk_coverage_score' => $riskCoverageScore,
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'doc_quality' => $docQuality,
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'ecs' => $ecs,
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'ecs_components' => $ecsComponents,
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];
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$stmt = $pdo->prepare("INSERT INTO engineer_kpi (engineer_id, period_start, period_end, sla_compliance, response_time_score, resolution_time_score, diagnosis_accuracy, reopen_rate, risk_coverage_score, documentation_quality, engineer_score, grade, components_json)
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VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?)");
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$stmt->execute([
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$eid, $periodStart, $periodEnd,
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$slaCompliance, $responseTimeScore, $resolutionTimeScore,
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$diagnosisAccuracy, $reopenRate, $riskCoverageScore, $docQuality,
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$es, $grade,
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json_encode($components)
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]);
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}
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$logMsg = 'KPI calculated for ' . count($engineers) . ' users';
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$ecsCount = 0;
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foreach ($engineers as $eng) {
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$stmt = $pdo->prepare("SELECT components_json FROM engineer_kpi WHERE engineer_id=? AND period_start=? ORDER BY id DESC LIMIT 1");
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$stmt->execute([$eng['id'], $periodStart]);
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$row = $stmt->fetch();
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if ($row) {
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$comp = json_decode($row['components_json'], true);
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if (!empty($comp['ecs'])) $ecsCount++;
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}
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}
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if ($ecsCount > 0) $logMsg .= " (ECS calculated for $ecsCount engineers)";
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auth_log($userId, 'kpi_calc', $logMsg);
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header('Location: /service/pages/owner/ceo.php?kpi_ok=1');
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exit;
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