<?php
declare(strict_types=1);
header('Content-Type: application/json');
require_once '../db/config.php';

$code = $_GET['code'] ?? '';

if (empty($code)) {
    echo json_encode(['success' => false, 'error' => 'Kode voucher harus diisi']);
    exit;
}

$db = db();
$stmt = $db->prepare("SELECT * FROM vouchers WHERE code = ? AND is_used = 0 AND (expires_at IS NULL OR expires_at > NOW())");
$stmt->execute([$code]);
$voucher = $stmt->fetch();

if ($voucher) {
    echo json_encode(['success' => true, 'voucher' => $voucher]);
} else {
    echo json_encode(['success' => false, 'error' => 'Voucher tidak valid atau sudah kedaluwarsa']);
}