<?php
/**
 * Order Tracking Feature
 * File: includes/class-order-tracking.php
 */

if ( !defined( 'ABSPATH' ) ) {
	exit;
}

class AICA_Order_Tracking {

	private static $instance = null;

	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	private function __construct() {
		// Hook nel chat endpoint per intercettare richieste di tracking
		add_filter( 'aica_chat_response', array( $this, 'handle_order_tracking' ), 10, 2 );
	}

	/**
	 * Handle order tracking requests
	 */
	public function handle_order_tracking( $response, $message ) {
		// Keywords per tracking ordini
		$tracking_keywords = array(
			'track',
			'order',
			'tracking',
			'dove',
			'dov\'è',
			'spedizione',
			'consegna',
			'stato ordine',
			'traccia',
		);

		$message_lower       = strtolower( $message );
		$is_tracking_request = false;

		foreach ( $tracking_keywords as $keyword ) {
			if ( strpos( $message_lower, strtolower( $keyword ) ) !== false ) {
				$is_tracking_request = true;
				break;
			}
		}

		if ( !$is_tracking_request ) {
			return $response;
		}

		// Cerca ordini dell'utente
		$user_id = get_current_user_id();

		if ( !$user_id ) {
			return array(
				'message'       => __( 'Per tracciare i tuoi ordini, devi prima effettuare il login.', 'aica-smart-ai-commerce-assistant' ),
				'require_login' => true,
			);
		}

		// Ottieni ordini recenti
		$orders = $this->get_user_recent_orders( $user_id );

		if ( empty( $orders ) ) {
			return array(
				'message' => __( 'Non hai ordini recenti da tracciare.', 'aica-smart-ai-commerce-assistant' ),
			);
		}

		// Formatta risposta con ordini
		$order_info = $this->format_orders_response( $orders );

		return array(
			'message' => $order_info['message'],
			'orders'  => $order_info['orders'],
		);
	}

	/**
	 * Get user recent orders
	 */
	private function get_user_recent_orders( $user_id, $limit = 5 ) {
		$orders = wc_get_orders(
			array(
				'customer_id' => $user_id,
				'limit'       => $limit,
				'orderby'     => 'date',
				'order'       => 'DESC',
			)
		);

		return $orders;
	}

	/**
	 * Format orders response
	 */
	private function format_orders_response( $orders ) {
		$orders_data = array();
		$message     = __( 'Ecco i tuoi ordini recenti:', 'aica-smart-ai-commerce-assistant' ) . "\n\n";

		foreach ( $orders as $order ) {
			$order_id     = $order->get_id();
			$order_number = $order->get_order_number();
			$status       = $order->get_status();
			$status_name  = wc_get_order_status_name( $status );
			$date         = $order->get_date_created()->date_i18n( 'd/m/Y' );
			$total        = $order->get_formatted_order_total();

			// Tracking info (se disponibile)
			$tracking_number = $order->get_meta( '_tracking_number' );
			$tracking_url    = $order->get_meta( '_tracking_url' );

			$orders_data[] = array(
				'id'              => $order_id,
				'number'          => $order_number,
				'status'          => $status,
				'status_name'     => $status_name,
				'date'            => $date,
				'total'           => $total,
				'tracking_number' => $tracking_number,
				'tracking_url'    => $tracking_url,
				'view_url'        => $order->get_view_order_url(),
			);

			$message .= sprintf(
				"**Ordine #%s** - %s\n" .
				"📅 Data: %s\n" .
				"💰 Totale: %s\n" .
				"📦 Stato: %s\n",
				$order_number,
				$status_name,
				$date,
				$total,
				$status_name
			);

			if ( $tracking_number ) {
				$message .= sprintf( "🔍 Tracking: %s\n", $tracking_number );
			}

			$message .= "\n";
		}

		return array(
			'message' => $message,
			'orders'  => $orders_data,
		);
	}

	/**
	 * Get order by number
	 */
	public function get_order_by_number( $order_number ) {
		global $wpdb;

		$cache_key = 'aica_order_id_' . $order_number;
		$order_id  = wp_cache_get( $cache_key, 'aica_order_tracking' );
		
		if ( false === $order_id ) {
			// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
			$order_id = $wpdb->get_var(
				$wpdb->prepare(
					"
                SELECT ID FROM {$wpdb->posts}
                WHERE post_type = 'shop_order'
                AND (ID = %s OR post_title LIKE %s)
                LIMIT 1
            ",
					$order_number,
					'%' . $wpdb->esc_like( $order_number ) . '%'
				)
			);
			wp_cache_set( $cache_key, $order_id, 'aica_order_tracking', HOUR_IN_SECONDS );
		}

		if ( $order_id ) {
			return wc_get_order( $order_id );
		}

		return null;
	}
}

// Initialize
// AICA_Order_Tracking::get_instance(); // Removed, handled by main plugin class