<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class Argus_Actions {

	public static function run( $type, array $params ) {
		if ( ! current_user_can( 'manage_options' ) ) {
			return array( 'success' => false, 'message' => __( 'You do not have permission to do this.', 'argus-wordpress-defence' ) );
		}

		switch ( $type ) {
			case 'update_core':
				return self::update_core();
			case 'update_plugin':
				return self::update_plugin( $params['plugin'] ?? '' );
			case 'update_theme':
				return self::update_theme( $params['theme'] ?? '' );
			case 'restore_quarantined_file':
				return self::restore_quarantined_file( $params['path'] ?? '' );
			default:
				return array( 'success' => false, 'message' => __( 'Unknown action.', 'argus-wordpress-defence' ) );
		}
	}

	protected static function restore_quarantined_file( $rel_path ) {
		if ( '' === $rel_path || Argus_Malware_Scanner::QUARANTINE_SUFFIX !== substr( $rel_path, -strlen( Argus_Malware_Scanner::QUARANTINE_SUFFIX ) ) ) {
			return array( 'success' => false, 'message' => __( 'Not a quarantined file.', 'argus-wordpress-defence' ) );
		}

		$uploads = wp_get_upload_dir();
		$base    = wp_normalize_path( trailingslashit( ABSPATH ) );
		$abs     = wp_normalize_path( ABSPATH . ltrim( $rel_path, '/' ) );
		$uploads_base = wp_normalize_path( trailingslashit( $uploads['basedir'] ?? '' ) );

		if ( '' === $uploads_base || 0 !== strpos( $abs, $uploads_base ) || false !== strpos( $rel_path, '..' ) ) {
			return array( 'success' => false, 'message' => __( 'Refusing to restore a path outside the uploads directory.', 'argus-wordpress-defence' ) );
		}
		if ( ! file_exists( $abs ) ) {
			return array( 'success' => false, 'message' => __( 'That file no longer exists.', 'argus-wordpress-defence' ) );
		}

		$restored_abs = substr( $abs, 0, -strlen( Argus_Malware_Scanner::QUARANTINE_SUFFIX ) );
		if ( file_exists( $restored_abs ) || ! @rename( $abs, $restored_abs ) ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors
			return array( 'success' => false, 'message' => __( 'Could not restore the file (a file already exists at the original name, or the rename failed).', 'argus-wordpress-defence' ) );
		}

		$restored_rel = str_replace( $base, '', $restored_abs );

		Argus_Malware_Scanner::mark_restored_trusted( $restored_rel, hash_file( 'sha256', $restored_abs ) );

		Argus_Events::record( 'action_completed', 'info', 'Restored quarantined file: ' . $restored_rel, array( 'type' => 'restore_quarantined_file', 'path' => $restored_rel ) );
		return array( 'success' => true, 'message' => sprintf( __( 'Restored %s to its original name.', 'argus-wordpress-defence' ), $restored_rel ) );
	}

	protected static function update_core() {
		require_once ABSPATH . 'wp-admin/includes/file.php';
		require_once ABSPATH . 'wp-admin/includes/misc.php';
		require_once ABSPATH . 'wp-admin/includes/template.php';
		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
		require_once ABSPATH . 'wp-admin/includes/update.php';

		wp_version_check();
		$updates = get_core_updates();
		if ( empty( $updates ) || 'upgrade' !== ( $updates[0]->response ?? '' ) ) {
			return array( 'success' => true, 'message' => __( 'WordPress core is already up to date.', 'argus-wordpress-defence' ) );
		}

		$upgrader = new Core_Upgrader();
		$result   = $upgrader->upgrade( $updates[0] );

		if ( is_wp_error( $result ) ) {
			Argus_Events::record( 'action_failed', 'medium', 'Core update failed: ' . $result->get_error_message(), array( 'type' => 'update_core' ) );
			return array( 'success' => false, 'message' => $result->get_error_message() );
		}

		Argus_Events::record( 'action_completed', 'info', 'Updated WordPress core to ' . $updates[0]->version, array( 'type' => 'update_core', 'version' => $updates[0]->version ) );
		return array( 'success' => true, 'message' => sprintf( __( 'Updated WordPress core to %s.', 'argus-wordpress-defence' ), $updates[0]->version ) );
	}

	protected static function update_plugin( $plugin_file ) {
		if ( '' === $plugin_file ) {
			return array( 'success' => false, 'message' => __( 'Missing plugin.', 'argus-wordpress-defence' ) );
		}
		require_once ABSPATH . 'wp-admin/includes/file.php';
		require_once ABSPATH . 'wp-admin/includes/misc.php';
		require_once ABSPATH . 'wp-admin/includes/template.php';
		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
		require_once ABSPATH . 'wp-admin/includes/update.php';
		require_once ABSPATH . 'wp-admin/includes/plugin.php';

		wp_update_plugins();

		$upgrader = new Plugin_Upgrader();
		$result   = $upgrader->upgrade( $plugin_file );

		if ( is_wp_error( $result ) || false === $result ) {
			$message = is_wp_error( $result ) ? $result->get_error_message() : __( 'Plugin update failed.', 'argus-wordpress-defence' );
			Argus_Events::record( 'action_failed', 'medium', 'Plugin update failed: ' . $message, array( 'type' => 'update_plugin', 'plugin' => $plugin_file ) );
			return array( 'success' => false, 'message' => $message );
		}

		Argus_Events::record( 'action_completed', 'info', 'Updated plugin ' . $plugin_file, array( 'type' => 'update_plugin', 'plugin' => $plugin_file ) );
		return array( 'success' => true, 'message' => __( 'Plugin updated.', 'argus-wordpress-defence' ) );
	}

	protected static function update_theme( $stylesheet ) {
		if ( '' === $stylesheet ) {
			return array( 'success' => false, 'message' => __( 'Missing theme.', 'argus-wordpress-defence' ) );
		}
		require_once ABSPATH . 'wp-admin/includes/file.php';
		require_once ABSPATH . 'wp-admin/includes/misc.php';
		require_once ABSPATH . 'wp-admin/includes/template.php';
		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
		require_once ABSPATH . 'wp-admin/includes/update.php';

		wp_update_themes();

		$upgrader = new Theme_Upgrader();
		$result   = $upgrader->upgrade( $stylesheet );

		if ( is_wp_error( $result ) || false === $result ) {
			$message = is_wp_error( $result ) ? $result->get_error_message() : __( 'Theme update failed.', 'argus-wordpress-defence' );
			Argus_Events::record( 'action_failed', 'medium', 'Theme update failed: ' . $message, array( 'type' => 'update_theme', 'theme' => $stylesheet ) );
			return array( 'success' => false, 'message' => $message );
		}

		Argus_Events::record( 'action_completed', 'info', 'Updated theme ' . $stylesheet, array( 'type' => 'update_theme', 'theme' => $stylesheet ) );
		return array( 'success' => true, 'message' => __( 'Theme updated.', 'argus-wordpress-defence' ) );
	}
}