<?php
/**
 * Plugin Name: Aicoso Wishlist for WooCommerce
 * Plugin URI: https://wordpress.org/plugins/aicoso-wishlist-for-woocommerce/
 * Description: Comprehensive wishlist solution for WooCommerce with AI-powered recommendations and advanced analytics
 * Version: 1.1.0
 * Author: Aicoso
 * Author URI: https://aicoso.com
 * Text Domain: aicoso-wishlist-for-woocommerce
 * Domain Path: /languages
 * Requires at least: 5.8
 * Requires PHP: 7.4
 * WC requires at least: 8.0
 * WC tested up to: 11.1
 * License: GPL v3 or later
 * License URI: https://www.gnu.org/licenses/gpl-3.0.html
 * Requires Plugins: woocommerce
 */

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

// Define plugin constants
define('AICOSO_WISHLIST_VERSION', '1.1.0');
define('AICOSO_WISHLIST_PLUGIN_FILE', __FILE__);
define('AICOSO_WISHLIST_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('AICOSO_WISHLIST_PLUGIN_URL', plugin_dir_url(__FILE__));
define('AICOSO_WISHLIST_PLUGIN_BASENAME', plugin_basename(__FILE__));
define('AICOSO_WISHLIST_TABLE_WISHLISTS', 'aicoso_wishlists');
define('AICOSO_WISHLIST_TABLE_ITEMS', 'aicoso_wishlist_items');

/**
 * Main plugin class
 */
class Aicoso_Wishlist_Plugin {
    
    private static $instance = null;
    
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    private function __construct() {
        // Load global functions
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/aicoso-wishlist-functions.php';
        
        // Load plugin when WordPress and WooCommerce are ready
        add_action('plugins_loaded', array($this, 'init'), 20);
        
        // Load textdomain at init action per WordPress 6.7 requirements
        add_action('init', array($this, 'load_textdomain'));
        
        // Register activation/deactivation hooks
        register_activation_hook(AICOSO_WISHLIST_PLUGIN_FILE, array($this, 'activate'));
        register_deactivation_hook(AICOSO_WISHLIST_PLUGIN_FILE, array($this, 'deactivate'));
        
        // Declare WooCommerce HPOS compatibility
        add_action('before_woocommerce_init', array($this, 'declare_compatibility'));
    }
    
    /**
     * Initialize the plugin
     */
    public function init() {
        // Check if WooCommerce is active
        if (!class_exists('WooCommerce')) {
            add_action('admin_notices', array($this, 'woocommerce_missing_notice'));
            return;
        }
        
        // Check and create tables if needed
        $this->check_tables();
        
        // Load dependencies
        $this->load_dependencies();
        
        // Initialize components
        $this->init_components();
    }
    
    /**
     * Load plugin textdomain
     */
    public function load_textdomain() {
        load_plugin_textdomain('aicoso-wishlist-for-woocommerce', false, dirname(plugin_basename(AICOSO_WISHLIST_PLUGIN_FILE)) . '/languages');
    }
    
    /**
     * Declare compatibility with WooCommerce features
     */
    public function declare_compatibility() {
        if (class_exists('\Automattic\WooCommerce\Utilities\FeaturesUtil')) {
            \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('custom_order_tables', AICOSO_WISHLIST_PLUGIN_FILE, true);
            \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('cart_checkout_blocks', AICOSO_WISHLIST_PLUGIN_FILE, true);
        }
    }
    
    /**
     * Check if database tables exist and create if not
     */
    private function check_tables() {
        global $wpdb;
        
        $wishlists_table = $wpdb->prefix . AICOSO_WISHLIST_TABLE_WISHLISTS;
        $items_table = $wpdb->prefix . AICOSO_WISHLIST_TABLE_ITEMS;
        $analytics_table = $wpdb->prefix . 'aicoso_wishlist_analytics';
        
        // Check if tables exist
        $wishlists_exists = $wpdb->get_var("SHOW TABLES LIKE '{$wishlists_table}'");
        $items_exists = $wpdb->get_var("SHOW TABLES LIKE '{$items_table}'");
        $analytics_exists = $wpdb->get_var("SHOW TABLES LIKE '{$analytics_table}'");
        
        // If any table is missing, create all tables
        if (!$wishlists_exists || !$items_exists || !$analytics_exists) {
            require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
            Aicoso_Wishlist_Install::create_tables();
            Aicoso_Wishlist_Install::set_default_options();
        }
        
        // Always check for missing columns (for existing installations)
        if ($wishlists_exists) {
            require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
            Aicoso_Wishlist_Install::add_missing_columns($wpdb->prefix . AICOSO_WISHLIST_TABLE_WISHLISTS);
        }
        
        // Ensure default options are set
        if (get_option('aicoso_wishlist_enable_for_guests') === false) {
            require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
            Aicoso_Wishlist_Install::set_default_options();
        }
    }
    
    /**
     * Force create tables using direct SQL
     */
    private function force_create_tables() {
        global $wpdb;
        
        $charset_collate = $wpdb->get_charset_collate();
        
        // Create wishlists table with direct query if not exists
        $wishlists_table = $wpdb->prefix . AICOSO_WISHLIST_TABLE_WISHLISTS;
        $sql = "CREATE TABLE IF NOT EXISTS {$wishlists_table} (
            id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
            user_id BIGINT(20) UNSIGNED DEFAULT NULL,
            session_id VARCHAR(255) DEFAULT NULL,
            wishlist_token VARCHAR(64) NOT NULL,
            wishlist_name VARCHAR(255) NOT NULL DEFAULT 'My Wishlist',
            wishlist_slug VARCHAR(255) NOT NULL,
            wishlist_type ENUM('default', 'category', 'custom') DEFAULT 'default',
            category_id BIGINT(20) UNSIGNED DEFAULT NULL,
            privacy ENUM('public', 'shared', 'private') DEFAULT 'public',
            is_default TINYINT(1) DEFAULT 0,
            share_key VARCHAR(64) DEFAULT NULL,
            date_created DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
            date_modified DATETIME DEFAULT NULL,
            expiration DATETIME DEFAULT NULL,
            PRIMARY KEY (id),
            UNIQUE KEY wishlist_token (wishlist_token),
            KEY user_id (user_id),
            KEY session_id (session_id),
            KEY category_id (category_id),
            KEY wishlist_type (wishlist_type),
            KEY privacy (privacy),
            KEY share_key (share_key),
            KEY date_created (date_created)
        ) $charset_collate";
        $wpdb->query($sql);
    }
    
    /**
     * Load required dependencies
     */
    private function load_dependencies() {
        // Core classes
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-db.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-session.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-ajax.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-shortcodes.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-frontend.php';
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist.php';
        
        // Admin classes
        if (is_admin()) {
            require_once AICOSO_WISHLIST_PLUGIN_DIR . 'admin/class-aicoso-wishlist-admin.php';
        }
    }
    
    /**
     * Initialize plugin components
     */
    private function init_components() {
        // Initialize main class
        Aicoso_Wishlist::get_instance();
        
        // Add settings link
        add_filter('plugin_action_links_' . AICOSO_WISHLIST_PLUGIN_BASENAME, array($this, 'add_settings_link'));
    }
    
    /**
     * Plugin activation
     */
    public function activate() {
        // Check for WooCommerce
        if (!class_exists('WooCommerce')) {
            deactivate_plugins(plugin_basename(AICOSO_WISHLIST_PLUGIN_FILE));
            // Don't use translation here as textdomain isn't loaded yet during activation
            wp_die('Aicoso Wishlist requires WooCommerce to be installed and active.');
        }
        
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
        Aicoso_Wishlist_Install::activate();
    }
    
    /**
     * Plugin deactivation
     */
    public function deactivate() {
        require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
        Aicoso_Wishlist_Install::deactivate();
    }
    
    /**
     * WooCommerce missing notice
     */
    public function woocommerce_missing_notice() {
        ?>
        <div class="notice notice-error">
            <p><?php _e('Aicoso Wishlist requires WooCommerce to be installed and active.', 'aicoso-wishlist-for-woocommerce'); ?></p>
        </div>
        <?php
    }
    
    /**
     * Add settings link to plugins page
     */
    public function add_settings_link($links) {
        // Only translate if textdomain is loaded
        $settings_text = did_action('init') ? __('Settings', 'aicoso-wishlist-for-woocommerce') : 'Settings';
        $settings_link = '<a href="' . admin_url('admin.php?page=aicoso-wishlist-settings') . '">' . $settings_text . '</a>';
        array_unshift($links, $settings_link);
        return $links;
    }
}

// Initialize the plugin
Aicoso_Wishlist_Plugin::get_instance();

// Register uninstall hook
register_uninstall_hook(__FILE__, 'aicoso_wishlist_uninstall');

function aicoso_wishlist_uninstall() {
    require_once AICOSO_WISHLIST_PLUGIN_DIR . 'includes/class-aicoso-wishlist-install.php';
    Aicoso_Wishlist_Install::uninstall();
}