<?php
header('Content-Type: application/json');

require_once(__DIR__ . '/include/headscript.php');

$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

$input = json_decode(file_get_contents('php://input'), true);

$id    = (int)($input['id'] ?? 0);
$field = (string)($input['field'] ?? '');
$value = $input['value'] ?? null;

if ($id <= 0) {
    echo json_encode(['success' => false, 'message' => 'Invalid id']);
    exit;
}

$allowed = ['default_value', 'is_visible_import', 'is_required'];
if (!in_array($field, $allowed, true)) {
    echo json_encode(['success' => false, 'message' => 'Invalid field']);
    exit;
}

if ($field === 'is_visible_import' || $field === 'is_required') {
    $value = ((int)$value === 1) ? 1 : 0;
}


$sql = "UPDATE template_fixed_mapping SET {$field} = :val WHERE id = :id";
$stmt = $pdo->prepare($sql);
$ok = $stmt->execute([':val' => $value, ':id' => $id]);

echo json_encode(['success' => (bool)$ok]);