<?php
/**
 * The core plugin class.
 *
 * This is used to define internationalization, admin-specific hooks, and
 * public-facing site hooks.
 *
 * @package AICOSO_Dynamic_Pricing_For_WooCommerce
 */

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

/**
 * The core plugin class.
 */
class DP_AICOSO {

	/**
	 * The loader that's responsible for maintaining and registering all hooks that power
	 * the plugin.
	 *
	 * @var DP_AICOSO_Loader $loader Maintains and registers all hooks for the plugin.
	 */
	protected $loader;

	/**
	 * The unique identifier of this plugin.
	 *
	 * @var string $plugin_name The string used to uniquely identify this plugin.
	 */
	protected $plugin_name;

	/**
	 * The current version of the plugin.
	 *
	 * @var string $version The current version of the plugin.
	 */
	protected $version;

	/**
	 * Define the core functionality of the plugin.
	 */
	public function __construct() {
		$this->version     = DP_AICOSO_VERSION;
		$this->plugin_name = 'aicoso-dynamic-pricing-for-woocommerce';

		$this->load_dependencies();
		$this->set_locale();
		$this->define_admin_hooks();
		$this->define_public_hooks();
		$this->init_woocommerce_integration();
	}

	/**
	 * Load the required dependencies for this plugin.
	 */
	private function load_dependencies() {
		// The class responsible for orchestrating the actions and filters of the core plugin.
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/class-dp-aicoso-loader.php';

		// The class responsible for defining internationalization functionality.
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/class-dp-aicoso-i18n.php';

		// The class responsible for defining all actions that occur in the admin area.
		require_once DP_AICOSO_PLUGIN_DIR . 'admin/class-dp-aicoso-admin.php';

		// The class responsible for defining all actions that occur in the public-facing side.
		require_once DP_AICOSO_PLUGIN_DIR . 'public/class-dp-aicoso-public.php';

		// Pricing rules classes.
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/pricing-rules/class-dp-aicoso-abstract-pricing-rule.php';
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/pricing-rules/class-dp-aicoso-product-rule.php';
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/pricing-rules/class-dp-aicoso-category-rule.php';
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/pricing-rules/class-dp-aicoso-role-rule.php';
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/pricing-rules/class-dp-aicoso-time-rule.php';

		// Calculator and cache classes.
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/class-dp-aicoso-cache-manager.php';
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/calculators/class-dp-aicoso-price-calculator.php';

		// WooCommerce integration.
		require_once DP_AICOSO_PLUGIN_DIR . 'includes/class-dp-aicoso-woocommerce-integration.php';

		$this->loader = new DP_AICOSO_Loader();
	}

	/**
	 * Define the locale for this plugin for internationalization.
	 */
	private function set_locale() {
		$plugin_i18n = new DP_AICOSO_I18n();

		$this->loader->add_action( 'plugins_loaded', $plugin_i18n, 'load_plugin_textdomain' );
	}

	/**
	 * Register all of the hooks related to the admin area functionality.
	 */
	private function define_admin_hooks() {
		$plugin_admin = new DP_AICOSO_Admin( $this->get_plugin_name(), $this->get_version() );

		$this->loader->add_action( 'admin_enqueue_scripts', $plugin_admin, 'enqueue_styles' );
		$this->loader->add_action( 'admin_enqueue_scripts', $plugin_admin, 'enqueue_scripts' );
		$this->loader->add_action( 'admin_menu', $plugin_admin, 'add_admin_menu' );
		$this->loader->add_action( 'admin_init', $this, 'register_settings' );

		// Handle exports early before any output.
		$this->loader->add_action( 'admin_init', $plugin_admin, 'handle_export_early', 1 );

		// AJAX handlers.
		$this->loader->add_action( 'wp_ajax_dp_aicoso_save_rule', $plugin_admin, 'ajax_save_rule' );
		$this->loader->add_action( 'wp_ajax_dp_aicoso_delete_rule', $plugin_admin, 'ajax_delete_rule' );
		$this->loader->add_action( 'wp_ajax_dp_aicoso_duplicate_rule', $plugin_admin, 'ajax_duplicate_rule' );
		$this->loader->add_action( 'wp_ajax_dp_aicoso_toggle_status', $plugin_admin, 'ajax_toggle_status' );
		$this->loader->add_action( 'wp_ajax_dp_aicoso_search_products', $plugin_admin, 'ajax_search_products' );
		$this->loader->add_action( 'wp_ajax_dp_aicoso_clear_cache', $plugin_admin, 'ajax_clear_cache' );
	}

	/**
	 * Register plugin settings.
	 */
	public function register_settings() {
		register_setting(
			'dp_aicoso_settings_group',
			'dp_aicoso_settings',
			array(
				'type' => 'array',
				'sanitize_callback' => array( $this, 'sanitize_settings' ),
			)
		);
	}

	/**
	 * Sanitize plugin settings.
	 *
	 * @param array $input The settings input.
	 * @return array Sanitized settings.
	 */
	public function sanitize_settings( $input ) {
		$sanitized = array();

		if ( isset( $input['enable_cache'] ) ) {
			$sanitized['enable_cache'] = ( '1' === $input['enable_cache'] ) ? '1' : '0';
		}

		if ( isset( $input['cache_expiration'] ) ) {
			$sanitized['cache_expiration'] = absint( $input['cache_expiration'] );
		}

		if ( isset( $input['enable_debug'] ) ) {
			$sanitized['enable_debug'] = ( '1' === $input['enable_debug'] ) ? '1' : '0';
		}

		if ( isset( $input['bulk_pricing_table'] ) ) {
			$sanitized['bulk_pricing_table'] = ( '1' === $input['bulk_pricing_table'] ) ? '1' : '0';
		}

		if ( isset( $input['show_original_price'] ) ) {
			$sanitized['show_original_price'] = ( '1' === $input['show_original_price'] ) ? '1' : '0';
		}

		if ( isset( $input['use_database_cache'] ) ) {
			$sanitized['use_database_cache'] = ( '1' === $input['use_database_cache'] ) ? '1' : '0';
		}

		return $sanitized;
	}

	/**
	 * Register all of the hooks related to the public-facing functionality.
	 */
	private function define_public_hooks() {
		$plugin_public = new DP_AICOSO_Public( $this->get_plugin_name(), $this->get_version() );

		$this->loader->add_action( 'wp_enqueue_scripts', $plugin_public, 'enqueue_styles' );
		$this->loader->add_action( 'wp_enqueue_scripts', $plugin_public, 'enqueue_scripts' );

		// Note: Price filters are handled by WooCommerce Integration class to avoid duplication.
		// The public class methods for pricing are kept for backward compatibility but not hooked here.
	}

	/**
	 * Initialize WooCommerce integration.
	 */
	private function init_woocommerce_integration() {
		// Initialize WooCommerce integration on init action with proper checks.
		$this->loader->add_action( 'init', $this, 'load_woocommerce_integration', 20 );
	}

	/**
	 * Load WooCommerce integration.
	 */
	public function load_woocommerce_integration() {
		// Prevent multiple initializations.
		static $initialized = false;

		if ( $initialized ) {
			return;
		}

		if ( class_exists( 'WooCommerce' ) ) {
			// Check if required database tables exist before initializing.
			if ( $this->check_database_tables() ) {
				// Use the fixed WooCommerce Integration class with advanced conditions support.
				new DP_AICOSO_WooCommerce_Integration();

				$initialized = true;
			}
		}
	}

	/**
	 * Check if required database tables exist.
	 *
	 * @return bool True if tables exist, false otherwise.
	 */
	private function check_database_tables() {
		global $wpdb;
		$table_name = $wpdb->prefix . 'dp_aicoso_rules';

		// Check if the rules table exists.
		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- Table existence check, initialization operation
		$table_exists = $wpdb->get_var( $wpdb->prepare( 'SHOW TABLES LIKE %s', $table_name ) ) === $table_name;

		return $table_exists;
	}

	/**
	 * Run the loader to execute all of the hooks with WordPress.
	 */
	public function run() {
		$this->loader->run();
	}

	/**
	 * The name of the plugin used to uniquely identify it.
	 *
	 * @return string The name of the plugin.
	 */
	public function get_plugin_name() {
		return $this->plugin_name;
	}

	/**
	 * The reference to the class that orchestrates the hooks with the plugin.
	 *
	 * @return DP_AICOSO_Loader Orchestrates the hooks of the plugin.
	 */
	public function get_loader() {
		return $this->loader;
	}

	/**
	 * Retrieve the version number of the plugin.
	 *
	 * @return string The version number of the plugin.
	 */
	public function get_version() {
		return $this->version;
	}
}