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require_once __DIR__ . '/../includes/functions.php';
header('Content-Type: application/json');

$email = filter_var($_POST['email'], FILTER_VALIDATE_EMAIL);

if (!$email) {
    echo json_encode(['success' => false, 'message' => 'Invalid email address']);
    exit;
}

try {
    $stmt = $db->prepare("INSERT IGNORE INTO newsletters (email) VALUES (?)");
    $stmt->execute([$email]);
    
    if ($stmt->rowCount() > 0) {
        echo json_encode(['success' => true, 'message' => 'Thank you for subscribing!']);
    } else {
        echo json_encode(['success' => false, 'message' => 'Email already subscribed']);
    }
} catch (Exception $e) {
    echo json_encode(['success' => false, 'message' => 'Subscription failed. Please try again.']);
}