<?php
/**
 * Admin action handlers.
 *
 * @package AfriDirect_Payment
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Admin actions class.
 */
class AfriDirect_Payment_Admin_Actions {

	/**
	 * Plugin instance.
	 *
	 * @var AfriDirect_Payment_Admin_Actions
	 */
	private static $instance = null;

	/**
	 * Get plugin instance.
	 *
	 * @return AfriDirect_Payment_Admin_Actions
	 */
	public static function instance() {
		if ( is_null( self::$instance ) ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	private function __construct() {
		$this->init_hooks();
	}

	/**
	 * Initialize hooks.
	 */
	private function init_hooks() {
		add_action( 'admin_post_afridirect_switch_to_classic_checkout', array( $this, 'handle_switch_to_classic_checkout' ) );
	}

	/**
	 * Handle switching to classic checkout.
	 */
	public function handle_switch_to_classic_checkout() {
		// Check capability.
		$capability = class_exists( 'WooCommerce' ) ? 'manage_woocommerce' : 'manage_options';
		if ( ! current_user_can( $capability ) ) {
			wp_die( esc_html__( 'You do not have permission to perform this action.', 'afridirect-payment' ) );
		}

		// Verify nonce.
		if ( ! isset( $_GET['_wpnonce'] ) || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['_wpnonce'] ) ), 'afridirect_switch_to_classic_checkout' ) ) {
			wp_die( esc_html__( 'Security check failed.', 'afridirect-payment' ) );
		}

		// Check if WooCommerce is active.
		if ( ! class_exists( 'WooCommerce' ) ) {
			wp_die( esc_html__( 'WooCommerce is not active.', 'afridirect-payment' ) );
		}

		// Find or create Checkout page.
		$checkout_page_id = get_option( 'woocommerce_checkout_page_id', 0 );
		$checkout_page = null;

		if ( $checkout_page_id ) {
			$checkout_page = get_post( $checkout_page_id );
			if ( ! $checkout_page || 'page' !== $checkout_page->post_type ) {
				$checkout_page = null;
			}
		}

		if ( ! $checkout_page ) {
			// Check if a page with slug 'checkout' exists.
			$existing = get_page_by_path( 'checkout', OBJECT, 'page' );
			if ( $existing ) {
				$checkout_page = $existing;
			} else {
				// Create new checkout page.
				$checkout_page_id = wp_insert_post(
					array(
						'post_title'   => __( 'Checkout', 'afridirect-payment' ),
						'post_name'    => 'checkout',
						'post_content' => '[woocommerce_checkout]',
						'post_status'  => 'publish',
						'post_type'    => 'page',
					)
				);

				if ( is_wp_error( $checkout_page_id ) ) {
					wp_die( esc_html__( 'Failed to create checkout page.', 'afridirect-payment' ) );
				}

				$checkout_page = get_post( $checkout_page_id );
			}
		}

		if ( ! $checkout_page ) {
			wp_die( esc_html__( 'Failed to find or create checkout page.', 'afridirect-payment' ) );
		}

		// Update checkout page content to use classic shortcode if needed.
		if ( false === strpos( $checkout_page->post_content, '[woocommerce_checkout]' ) ) {
			wp_update_post(
				array(
					'ID'           => $checkout_page->ID,
					'post_content'   => '[woocommerce_checkout]',
				)
			);
		}

		// Set WooCommerce checkout page option.
		update_option( 'woocommerce_checkout_page_id', $checkout_page->ID );

		// Find or create Cart page.
		$cart_page_id = get_option( 'woocommerce_cart_page_id', 0 );
		if ( ! $cart_page_id ) {
			$existing_cart = get_page_by_path( 'cart', OBJECT, 'page' );
			if ( $existing_cart ) {
				update_option( 'woocommerce_cart_page_id', $existing_cart->ID );
			} else {
				$cart_page_id = wp_insert_post(
					array(
						'post_title'   => __( 'Cart', 'afridirect-payment' ),
						'post_name'    => 'cart',
						'post_content' => '[woocommerce_cart]',
						'post_status'  => 'publish',
						'post_type'    => 'page',
					)
				);

				if ( ! is_wp_error( $cart_page_id ) ) {
					update_option( 'woocommerce_cart_page_id', $cart_page_id );
				}
			}
		}

		// Redirect back to Overview with success message.
		$menu_manager = AfriDirect_Payment_Admin_Menu::instance();
		$redirect_url = add_query_arg(
			array(
				'page'         => $menu_manager->get_menu_slug(),
				'afridirect_switched' => '1',
			),
			admin_url( 'admin.php' )
		);

		wp_safe_redirect( $redirect_url );
		exit;
	}
}