MailPoet Integration With Groupboss

// Function to add a subscriber to MailPoet lists (POST request)
function prefix_add_mailpoet_subscriber(WP_REST_Request $request) {
    // Get subscriber data from the request body
    $email = sanitize_email($request->get_param('email'));
    $first_name = sanitize_text_field($request->get_param('first_name'));
    $last_name = sanitize_text_field($request->get_param('last_name'));
    $list_ids = $request->get_param('list_ids');

    // Validate email
    if (empty($email) || !is_email($email)) {
        return new WP_Error('invalid_email', 'Invalid or missing email address.', array('status' => 400));
    }

    // Validate first name
    if (empty($first_name)) {
        return new WP_Error('missing_first_name', 'First name is required.', array('status' => 400));
    }

    // Validate list IDs
    if (empty($list_ids) || !is_array($list_ids)) {
        return new WP_Error('invalid_list_ids', 'List IDs are required and must be an array.', array('status' => 400));
    }

    try {
        // Use the MailPoet API to add the subscriber
        $mailpoet_api = \MailPoet\API\API::MP('v1');

        $subscriber_data = array(
            'email' => $email,
            'first_name' => $first_name,
            'last_name' => $last_name,
        );

        // Options for MailPoet email notifications
        $options = array(
            'send_confirmation_email' => true, // Send confirmation email if needed
            'schedule_welcome_email' => true,  // Schedule a welcome email if applicable
            'send_admin_notification_email' => true, // Notify admin of the new subscription
        );

        // Add the subscriber and return a success response
        $subscriber = $mailpoet_api->addSubscriber($subscriber_data, $list_ids, $options);

        return new WP_REST_Response(array(
            'status' => 'success',
            'message' => 'Subscriber added successfully!',
            'subscriber' => $subscriber,
        ), 200);

    } catch (Exception $e) {
        // Handle errors gracefully
        return new WP_Error('mailpoet_error', $e->getMessage(), array('status' => 400));
    }
}

// Function to check if a MailPoet list ID is valid (GET request)
function prefix_check_mailpoet_list_id(WP_REST_Request $request) {
    $list_id = (int) $request->get_param('id');

    try {
        // Use MailPoet API to get all lists
        $mailpoet_api = \MailPoet\API\API::MP('v1');
        $lists = $mailpoet_api->getLists(); // Get all lists

        // Check if the provided list ID exists in the lists array
        $is_valid = false;
        foreach ($lists as $list) {
            if ($list['id'] == $list_id) {
                $is_valid = true;
                break;
            }
        }

        if ($is_valid) {
            return new WP_REST_Response(array(
                'status' => 'success',
                'message' => 'List ID is valid.',
                'list_id' => $list_id,
            ), 200);
        } else {
            return new WP_REST_Response(array(
                'status' => 'error',
                'message' => 'List ID is invalid or does not exist.',
            ), 404);
        }
    } catch (Exception $e) {
        // Handle any MailPoet API exceptions
        return new WP_REST_Response(array(
            'status' => 'error',
            'message' => $e->getMessage(),
        ), 400);
    }
}

// Register REST API routes for MailPoet
function prefix_register_mailpoet_routes() {
    // Check if MailPoet is active
    if (class_exists('\MailPoet\API\API')) {
        // Route to check if a list ID is valid
        register_rest_route('mailpoet/v1', '/check-listid/(?P\d+)', array(
            'methods' => 'GET',
            'callback' => 'prefix_check_mailpoet_list_id',
            'args' => array(
                'id' => array(
                    'validate_callback' => function($param, $request, $key) {
                        return is_numeric($param);
                    }
                ),
            ),
        ));

        // Route to add a subscriber to MailPoet lists
        register_rest_route('mailpoet/v1', '/add-subscriber', array(
            'methods' => 'POST',
            'callback' => 'prefix_add_mailpoet_subscriber',
            'permission_callback' => '__return_true', // Adjust this for better security
        ));

        // Test route (ping) to check if MailPoet is active
        register_rest_route('mailpoet/v1', '/ping', array(
            'methods' => 'GET',
            'callback' => function() {
                return new WP_REST_Response(array(
                    'message' => 'MailPoet API is working.',
                    'status' => 'success',
                ), 200);
            },
        ));
    } else {
        // Fallback route if MailPoet is not activated
        register_rest_route('mailpoet/v1', '/ping', array(
            'methods' => 'GET',
            'callback' => function() {
                return new WP_REST_Response(array(
                    'message' => 'MailPoet is not activated.',
                    'status' => 'error',
                ), 404);
            },
        ));
    }
}
add_action('rest_api_init', 'prefix_register_mailpoet_routes');