event-tickets-mail-in-payment/event-tickets-mail-in-payment.php

<?php
/**
 * Plugin Name: Event Tickets - Mail-In Payment Gateway
 * Plugin URI: https://github.com/yourusername/event-tickets-mail-in-payment
 * Description: Adds a mail-in payment gateway for Event Tickets Commerce to accept check payments.
 * Version: 1.0.0
 * Requires at least: 6.6
 * Requires PHP: 7.4
 * Author: Your Name
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: event-tickets-mail-in
 * Domain Path: /languages/
 */

// Prevent direct access
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

// Define plugin constants
define( 'ET_MAIL_IN_VERSION', '1.0.0' );
define( 'ET_MAIL_IN_FILE', __FILE__ );
define( 'ET_MAIL_IN_PATH', plugin_dir_path( __FILE__ ) );
define( 'ET_MAIL_IN_URL', plugin_dir_url( __FILE__ ) );

/**
 * Main plugin class
 */
class ET_Mail_In_Payment {

	/**
	 * Single instance of the class
	 *
	 * @var ET_Mail_In_Payment
	 */
	private static $instance;

	/**
	 * Get single instance
	 *
	 * @return ET_Mail_In_Payment
	 */
	public static function instance() {
		if ( ! isset( self::$instance ) ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor
	 */
	private function __construct() {
		add_action( 'plugins_loaded', [ $this, 'init' ] );
		register_activation_hook( __FILE__, [ $this, 'activate' ] );
		register_deactivation_hook( __FILE__, [ $this, 'deactivate' ] );
	}

	/**
	 * Initialize the plugin
	 */
	public function init() {
		// Check if Event Tickets is active
		if ( ! $this->is_event_tickets_active() ) {
			add_action( 'admin_notices', [ $this, 'event_tickets_missing_notice' ] );
			return;
		}

		// Load text domain
		load_plugin_textdomain( 'event-tickets-mail-in', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

		// Include required files
		$this->includes();

		// Initialize components
		$this->init_components();
	}

	/**
	 * Check if Event Tickets is active
	 *
	 * @return bool
	 */
	private function is_event_tickets_active() {
		return class_exists( 'Tribe__Tickets__Main' ) && 
			   class_exists( 'TEC\Tickets\Commerce\Module' );
	}

	/**
	 * Include required files
	 */
	private function includes() {
		require_once ET_MAIL_IN_PATH . 'src/Gateway.php';
		require_once ET_MAIL_IN_PATH . 'src/Order.php';
		require_once ET_MAIL_IN_PATH . 'src/Settings.php';
		require_once ET_MAIL_IN_PATH . 'src/Provider.php';
		require_once ET_MAIL_IN_PATH . 'src/Hooks.php';
	}

	/**
	 * Initialize components
	 */
	private function init_components() {
		// Register our provider with dependency injection container
		tribe_register_provider( ET_Mail_In_Payment\Provider::class );
	}

	/**
	 * Plugin activation
	 */
	public function activate() {
		// Check dependencies
		if ( ! $this->is_event_tickets_active() ) {
			deactivate_plugins( plugin_basename( __FILE__ ) );
			wp_die( 
				__( 'Event Tickets - Mail-In Payment Gateway requires Event Tickets to be installed and activated.', 'event-tickets-mail-in' ),
				__( 'Plugin Activation Error', 'event-tickets-mail-in' ),
				[ 'back_link' => true ]
			);
		}

		// Set default options if they don't exist
		$this->set_default_options();
	}

	/**
	 * Plugin deactivation
	 */
	public function deactivate() {
		// Clean up if needed
	}

	/**
	 * Get default payment instructions
	 *
	 * @return string
	 */
	private function get_default_instructions() {
		return __( 'Please mail your check to the address provided below. Your tickets will be reserved for 7 days while we wait for your payment to arrive. Include your order number on the check memo line.', 'event-tickets-mail-in' );
	}

	/**
	 * Set default options on activation
	 */
	private function set_default_options() {
		// Set default options if they don't exist
		if ( false === tribe_get_option( 'tickets-commerce-mail-in-enabled' ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-enabled', true );
		}
		
		if ( empty( tribe_get_option( 'tickets-commerce-mail-in-title' ) ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-title', __( 'Mail-In Payment (Check)', 'event-tickets-mail-in' ) );
		}
		
		if ( empty( tribe_get_option( 'tickets-commerce-mail-in-description' ) ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-description', __( 'Pay by mailing a check to our address.', 'event-tickets-mail-in' ) );
		}
		
		if ( empty( tribe_get_option( 'tickets-commerce-mail-in-instructions' ) ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-instructions', $this->get_default_instructions() );
		}
		
		// For testing purposes, set some default values
		if ( empty( tribe_get_option( 'tickets-commerce-mail-in-address' ) ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-address', "123 Main Street\nAnytown, ST 12345\nUSA" );
		}
		
		if ( empty( tribe_get_option( 'tickets-commerce-mail-in-payable-to' ) ) ) {
			tribe_update_option( 'tickets-commerce-mail-in-payable-to', "Your Organization Name" );
		}
	}

	/**
	 * Display admin notice when Event Tickets is missing
	 */
	public function event_tickets_missing_notice() {
		echo '<div class="notice notice-error"><p>';
		echo esc_html__( 'Event Tickets - Mail-In Payment Gateway requires Event Tickets to be installed and activated.', 'event-tickets-mail-in' );
		echo '</p></div>';
	}
}

// Initialize the plugin
ET_Mail_In_Payment::instance();