<?php

namespace SpringDevs\Subscription;

/**
 * The Ajax class
 *
 * @package SpringDevs\Subscription
 */
class Ajax {


	/**
	 * Initialize the class
	 */
	public function __construct() {
		add_action( 'wp_ajax_subscrpt_install_woocommerce_plugin', array( $this, 'install_woocommerce_plugin' ) );
		add_action( 'wp_ajax_subscrpt_activate_woocommerce_plugin', array( $this, 'wps_subscription_activate_woocommerce_plugin' ) );
		add_action( 'wp_ajax_subscrpt_install_integration_plugin', array( $this, 'install_integration_plugin' ) );
		add_action( 'wp_ajax_subscrpt_activate_integration_plugin', array( $this, 'activate_integration_plugin' ) );
	}

	/**
	 * Install the WooCommerce Plugin.
	 */
	public function install_woocommerce_plugin() {
		include_once ABSPATH . 'wp-admin/includes/plugin-install.php';
		include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
		include_once ABSPATH . 'wp-admin/includes/file.php';
		include_once ABSPATH . 'wp-admin/includes/misc.php';

		if ( ! class_exists( 'Plugin_Upgrader' ) ) {
			require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php';
		}
		if ( ! class_exists( 'Plugin_Installer_Skin' ) ) {
			require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php';
		}

		$plugin = 'woocommerce';

		$api = plugins_api(
			'plugin_information',
			array(
				'slug'   => $plugin,
				'fields' => array(
					'short_description' => false,
					'sections'          => false,
					'requires'          => false,
					'rating'            => false,
					'ratings'           => false,
					'downloaded'        => false,
					'last_updated'      => false,
					'added'             => false,
					'tags'              => false,
					'compatibility'     => false,
					'homepage'          => false,
					'donate_link'       => false,
				),
			)
		);

		if ( is_wp_error( $api ) ) {
			wp_die( esc_html( $api->get_error_message() ) );
		}

		$title = sprintf(
			// translators: Plugin name and version.
			__( 'Installing Plugin: %s', 'subscription' ),
			$api->name . ' ' . $api->version
		);
		$nonce = 'install-plugin_' . $plugin;
		$url   = 'update.php?action=install-plugin&plugin=' . urlencode( $plugin );

		$upgrader = new \Plugin_Upgrader( new \Plugin_Installer_Skin( compact( 'title', 'url', 'nonce', 'plugin', 'api' ) ) );
		$upgrader->install( $api->download_link );
		wp_send_json(
			array(
				'msg' => 'Installed successfully !!',
			)
		);
	}

	/**
	 * Active WooComerce Plugin.
	 */
	public function activate_woocommerce_plugin() {
		// add Deprecated notice
		_deprecated_function( 'Ajax::activate_woocommerce_plugin', '1.5.3', 'Ajax::wps_subscription_activate_woocommerce_plugin' );
		return $this->wps_subscription_activate_woocommerce_plugin();
	}

	public function wps_subscription_activate_woocommerce_plugin() {
		activate_plugin( 'woocommerce/woocommerce.php' );
		wp_send_json(
			array(
				'msg' => 'Activated successfully !!',
			)
		);
	}

	/**
	 * Install and activate a payment gateway plugin from the integrations page.
	 */
	public function install_integration_plugin() {
		check_ajax_referer( 'subscrpt_integration_install_nonce', 'nonce' );

		if ( ! current_user_can( 'install_plugins' ) ) {
			wp_send_json_error( array( 'message' => __( 'Permission denied.', 'subscription' ) ), 403 );
		}

		$plugin_slug = isset( $_POST['plugin_slug'] ) ? sanitize_text_field( wp_unslash( $_POST['plugin_slug'] ) ) : '';

		if ( empty( $plugin_slug ) ) {
			wp_send_json_error( array( 'message' => __( 'Plugin slug is required.', 'subscription' ) ), 400 );
		}

		// Already installed but inactive: the upgrader would refuse with
		// "Destination folder already exists", so activate it instead.
		$installed_file = self::get_installed_plugin_file( $plugin_slug );

		if ( $installed_file ) {
			if ( ! current_user_can( 'activate_plugins' ) ) {
				wp_send_json_error( array( 'message' => __( 'Permission denied.', 'subscription' ) ), 403 );
			}

			$activate = activate_plugin( $installed_file );

			if ( is_wp_error( $activate ) ) {
				wp_send_json_error( array( 'message' => $activate->get_error_message() ), 500 );
			}

			wp_send_json_success();
		}

		include_once ABSPATH . 'wp-admin/includes/plugin-install.php';
		include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
		include_once ABSPATH . 'wp-admin/includes/file.php';
		include_once ABSPATH . 'wp-admin/includes/misc.php';

		// Already on disk: installing again fails on the existing folder, so
		// activate what is there instead.
		foreach ( array_keys( get_plugins() ) as $installed_file ) {
			if ( 0 === strpos( $installed_file, $plugin_slug . '/' ) ) {
				$activate = activate_plugin( $installed_file );
				if ( is_wp_error( $activate ) ) {
					wp_send_json_error( array( 'message' => $activate->get_error_message() ), 500 );
				}
				wp_send_json_success();
			}
		}

		$cache_key = 'subscrpt_plugin_api_' . sanitize_key( $plugin_slug );
		$api       = get_transient( $cache_key );

		if ( false === $api ) {
			// Buffer output so any PHP warnings from the API call don't corrupt the JSON response.
			ob_start();

			$api = plugins_api(
				'plugin_information',
				array(
					'slug'   => $plugin_slug,
					'fields' => array(
						'short_description' => false,
						'sections'          => false,
						'requires'          => false,
						'rating'            => false,
						'ratings'           => false,
						'downloaded'        => false,
						'last_updated'      => false,
						'added'             => false,
						'tags'              => false,
						'compatibility'     => false,
						'homepage'          => false,
						'donate_link'       => false,
					),
				)
			);

			ob_end_clean();

			if ( is_wp_error( $api ) ) {
				wp_send_json_error( array( 'message' => $api->get_error_message() ), 400 );
			}

			set_transient( $cache_key, $api, 12 * HOUR_IN_SECONDS );
		}

		$skin     = new \WP_Ajax_Upgrader_Skin();
		$upgrader = new \Plugin_Upgrader( $skin );
		$result   = $upgrader->install( $api->download_link );

		if ( is_wp_error( $result ) ) {
			wp_send_json_error( array( 'message' => $result->get_error_message() ), 500 );
		}

		// The skin collects the reason (folder exists, no filesystem access, …)
		// while install() itself only returns null.
		if ( ! $result ) {
			$message = $skin->get_errors()->has_errors()
				? $skin->get_error_messages()
				: __( 'Plugin installation failed.', 'subscription' );
			wp_send_json_error( array( 'message' => $message ), 500 );
		}

		$plugin_file = $upgrader->plugin_info();

		if ( ! $plugin_file ) {
			wp_send_json_success( array( 'warning' => __( 'Plugin installed but could not be activated automatically.', 'subscription' ) ) );
		}

		$activate = activate_plugin( $plugin_file );

		if ( is_wp_error( $activate ) ) {
			wp_send_json_success( array( 'warning' => __( 'Plugin installed but could not be activated automatically.', 'subscription' ) ) );
		}

		wp_send_json_success();
	}

	/**
	 * Main file of an installed plugin, looked up by its wp.org slug.
	 *
	 * @param string $plugin_slug The wp.org plugin slug, i.e. its directory name.
	 * @return string Plugin file relative to the plugins directory, or an empty string when not installed.
	 */
	public static function get_installed_plugin_file( $plugin_slug ) {
		if ( ! function_exists( 'get_plugins' ) ) {
			include_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		foreach ( array_keys( get_plugins() ) as $plugin_file ) {
			if ( strtok( $plugin_file, '/' ) === $plugin_slug ) {
				return $plugin_file;
			}
		}

		return '';
	}

	/**
	 * Activate an already installed integration plugin from the integrations page.
	 */
	public function activate_integration_plugin() {
		check_ajax_referer( 'subscrpt_integration_install_nonce', 'nonce' );

		if ( ! current_user_can( 'activate_plugins' ) ) {
			wp_send_json_error( array( 'message' => __( 'Permission denied.', 'subscription' ) ), 403 );
		}

		$plugin_file = isset( $_POST['plugin_file'] ) ? sanitize_text_field( wp_unslash( $_POST['plugin_file'] ) ) : '';

		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		if ( empty( $plugin_file ) || ! array_key_exists( $plugin_file, get_plugins() ) ) {
			wp_send_json_error( array( 'message' => __( 'Plugin is not installed.', 'subscription' ) ), 400 );
		}

		$activate = activate_plugin( $plugin_file );

		if ( is_wp_error( $activate ) ) {
			wp_send_json_error( array( 'message' => $activate->get_error_message() ), 500 );
		}

		wp_send_json_success();
	}
}