// --- AJAX: add item to cart ---
add_action( 'wp_ajax_nsdc_add', 'nsdc_add_to_cart' );
add_action( 'wp_ajax_nopriv_nsdc_add', 'nsdc_add_to_cart' );
function nsdc_add_to_cart() {
    global $wpdb;
    $wpdb->insert(
        $wpdb->prefix . 'nsdc_cart',
        array(
            'domain' => sanitize_text_field( $_POST['domain'] ),
            'price'  => floatval( $_POST['price'] ),
        )
    );
    wp_send_json_success();
}

// --- AJAX: get cart contents ---
add_action( 'wp_ajax_nsdc_cart', 'nsdc_get_cart' );
add_action( 'wp_ajax_nopriv_nsdc_cart', 'nsdc_get_cart' );
function nsdc_get_cart() {
    global $wpdb;
    $items = $wpdb->get_results( 'SELECT * FROM ' . $wpdb->prefix . 'nsdc_cart' );
    wp_send_json_success( $items );
}

// --- AJAX: Stripe Checkout session ---
add_action( 'wp_ajax_nsdc_create_checkout', 'nsdc_create_checkout' );
add_action( 'wp_ajax_nopriv_nsdc_create_checkout', 'nsdc_create_checkout' );
function nsdc_create_checkout() {
    \Stripe\Stripe::setApiKey( NSDC_STRIPE_SECRET );
    global $wpdb;
    $items      = $wpdb->get_results( 'SELECT * FROM ' . $wpdb->prefix . 'nsdc_cart' );
    $line_items = array();
    foreach ( $items as $item ) {
        $line_items[] = array(
            'price_data' => array(
                'currency'     => 'usd',
                'product_data' => array( 'name' => $item->domain ),
                'unit_amount'  => intval( $item->price * 100 ),
            ),
            'quantity'   => 1,
        );
    }
    $session = \Stripe\Checkout\Session::create(
        array(
            'payment_method_types' => array( 'card' ),
            'line_items'           => $line_items,
            'mode'                 => 'payment',
            'success_url'          => add_query_arg( 'session_id', '{CHECKOUT_SESSION_ID}', home_url() ),
            'cancel_url'           => home_url( '?canceled=true' ),
        )
    );
    wp_send_json_success( array( 'id' => $session->id ) );
}

// --- AJAX: register domains ---
add_action( 'wp_ajax_nsdc_register', 'nsdc_register_domains' );
add_action( 'wp_ajax_nopriv_nsdc_register', 'nsdc_register_domains' );
function nsdc_register_domains() {
    global $wpdb;
    $items   = $wpdb->get_results( 'SELECT * FROM ' . $wpdb->prefix . 'nsdc_cart' );
    $results = array();
    foreach ( $items as $item ) {
        $resp = wp_remote_get( add_query_arg(
            array(
                'version'   => '1',
                'type'      => 'xml',
                'key'       => NSDC_NAMESILO_KEY,
                'domain'    => $item->domain,
                'years'     => '1',
                'private'   => 'false',
                'auto_renew'=> 'false',
            ),
            'https://www.namesilo.com/api/registerDomain'
        ) );
        $body    = is_wp_error( $resp ) ? '' : wp_remote_retrieve_body( $resp );
        $success = strpos( $body, '<code>300</code>' ) !== false;
        $results[ $item->domain ] = $success ? 'registered' : 'failed';
    }
    // clear cart
    $wpdb->query( 'TRUNCATE TABLE ' . $wpdb->prefix . 'nsdc_cart' );
    wp_send_json_success( $results );
}