wc-tier-and-package-prices/wc-tier-and-package-prices.php

<?php

/**
 * Plugin Name: WooCommerce Tier and Package Prices
 * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-tier-package-prices
 * Description: Add tier pricing and package prices to WooCommerce products with configurable quantities at fixed prices
 * Version: 1.1.13
 * Author: Marco Graetsch
 * Author URI: https://src.bundespruefstelle.ch/magdev
 * Text Domain: wc-tier-package-prices
 * Domain Path: /languages
 * Requires at least: 6.0
 * Requires PHP: 7.4
 * WC requires at least: 8.0
 * WC tested up to: 10.0
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 */

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

// Define plugin constants
if (!defined('WC_TPP_VERSION')) {
    define('WC_TPP_VERSION', '1.1.13');
}
if (!defined('WC_TPP_PLUGIN_DIR')) {
    define('WC_TPP_PLUGIN_DIR', plugin_dir_path(__FILE__));
}
if (!defined('WC_TPP_PLUGIN_URL')) {
    define('WC_TPP_PLUGIN_URL', plugin_dir_url(__FILE__));
}
if (!defined('WC_TPP_PLUGIN_BASENAME')) {
    define('WC_TPP_PLUGIN_BASENAME', plugin_basename(__FILE__));
}

// Load Composer autoloader
require_once WC_TPP_PLUGIN_DIR . 'vendor/autoload.php';

/**
 * Display WooCommerce missing notice
 */
if (!function_exists('wc_tpp_woocommerce_missing_notice')) {
    function wc_tpp_woocommerce_missing_notice() {
        ?>
        <div class="notice notice-error">
            <p><?php _e('WooCommerce Tier and Package Prices requires WooCommerce to be installed and active.', 'wc-tier-package-prices'); ?></p>
        </div>
        <?php
    }
}

/**
 * Check if WooCommerce is active
 */
if (!in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins')))) {
    add_action('admin_notices', 'wc_tpp_woocommerce_missing_notice');
    return;
}

/**
 * Main plugin class
 */
if (!class_exists('WC_Tier_Package_Prices')) {
    class WC_Tier_Package_Prices {

        private static $instance = null;

        public static function get_instance() {
            if (null === self::$instance) {
                self::$instance = new self();
            }
            return self::$instance;
        }

        private function __construct() {
            $this->init_hooks();
            $this->includes();
        }

        private function init_hooks() {
            add_action('plugins_loaded', array($this, 'load_textdomain'));
            add_action('before_woocommerce_init', array($this, 'declare_hpos_compatibility'));
            register_activation_hook(__FILE__, array($this, 'activate'));
            register_deactivation_hook(__FILE__, array($this, 'deactivate'));
        }

        private function includes() {
            require_once WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-template-loader.php';
            require_once WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-admin.php';
            require_once WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-product-meta.php';
            require_once WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-frontend.php';
            require_once WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-cart.php';

            // Instantiate classes after WooCommerce is loaded
            add_action('woocommerce_loaded', array($this, 'init_classes'));
        }

        public function init_classes() {
            new WC_TPP_Admin();
            new WC_TPP_Product_Meta();
            new WC_TPP_Frontend();
            new WC_TPP_Cart();
        }

        public function declare_hpos_compatibility() {
            if (class_exists(\Automattic\WooCommerce\Utilities\FeaturesUtil::class)) {
                \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('custom_order_tables', __FILE__, true);
            }
        }

        public function load_textdomain() {
            load_plugin_textdomain('wc-tier-package-prices', false, dirname(WC_TPP_PLUGIN_BASENAME) . '/languages');
        }

        public function activate() {
            // Add default options
            add_option('wc_tpp_enable_tier_pricing', 'yes');
            add_option('wc_tpp_enable_package_pricing', 'yes');
            add_option('wc_tpp_display_table', 'yes');
            flush_rewrite_rules();
        }

        public function deactivate() {
            flush_rewrite_rules();
        }
    }
}

// Initialize the plugin
if (!function_exists('wc_tpp_init')) {
    function wc_tpp_init() {
        return WC_Tier_Package_Prices::get_instance();
    }
}

add_action('plugins_loaded', 'wc_tpp_init', 11);