<?php
declare(strict_types=1);
require_once __DIR__ . '/common.php';

api_require_method('GET');
$staff = api_require_staff();
api_require_admin_or_permission($staff, 'view_time_entries');
$pdo = get_db();

$filterStaffId = trim((string) ($_GET['staffId'] ?? ''));
$filterFrom = trim((string) ($_GET['from'] ?? '')) ?: date('Y-m-01');
$filterTo = trim((string) ($_GET['to'] ?? '')) ?: date('Y-m-d');

$allStaff = $pdo->query('SELECT id, name FROM staff WHERE is_active=1 ORDER BY name')->fetchAll();

$where = ['te.logged_at BETWEEN ? AND ?'];
$params = [$filterFrom . ' 00:00:00', $filterTo . ' 23:59:59'];

if ($filterStaffId !== '') {
    $where[] = 'te.staff_id = ?';
    $params[] = (int) $filterStaffId;
}

$stmt = $pdo->prepare(
    "SELECT te.*, s.name AS staff_name, t.ticket_number, t.subject
     FROM ticket_time_entries te
     JOIN staff s ON s.id = te.staff_id
     JOIN tickets t ON t.id = te.ticket_id
     WHERE " . implode(' AND ', $where) . "
     ORDER BY te.logged_at DESC
     LIMIT 500"
);
$stmt->execute($params);
$entries = $stmt->fetchAll();

$byStaff = [];
foreach ($entries as $e) {
    $byStaff[$e['staff_name']] = ($byStaff[$e['staff_name']] ?? 0) + (int) $e['minutes'];
}
$totalMinutes = array_sum(array_column($entries, 'minutes'));

api_json([
    'staffOptions' => array_map(fn(array $s) => ['id' => (int) $s['id'], 'name' => $s['name']], $allStaff),
    'entries' => array_map(fn(array $e) => [
        'id' => (int) $e['id'],
        'staffName' => $e['staff_name'],
        'ticketNumber' => $e['ticket_number'],
        'subject' => $e['subject'],
        'minutes' => (int) $e['minutes'],
        'note' => $e['note'],
        'loggedAt' => $e['logged_at'],
    ], $entries),
    'totalsByStaff' => array_map(fn($name, $mins) => ['staffName' => $name, 'minutes' => $mins], array_keys($byStaff), array_values($byStaff)),
    'totalMinutes' => $totalMinutes,
]);