<?php
require_once '../../config/config.php';
header('Content-Type: application/json');

try {
    $id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
    if ($id <= 0) { echo json_encode(['status'=>'error','message'=>'id required']); exit; }
    $stmt = $pdo->prepare('SELECT hall_setting_id, hall_id, rows_count, columns_count, seating_method, bench_capacity, max_students, row_labeling, internal_invigilators_required, external_invigilators_required,
                                  COALESCE(aisle_every_n_cols, 0) AS aisle_every_n_cols, COALESCE(aisle_every_n_rows, 0) AS aisle_every_n_rows
                           FROM hall_settings WHERE hall_setting_id = ?');
    $stmt->execute([$id]);
    $row = $stmt->fetch(PDO::FETCH_ASSOC);
    if (!$row) { echo json_encode(['status'=>'error','message'=>'Not found']); exit; }
    echo json_encode($row);
} catch (Throwable $e) {
    http_response_code(500);
    echo json_encode(['status'=>'error','message'=>$e->getMessage()]);
}
?>