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File://home/h67425c/ver1.khm.rest/wp-content/plugins/cyr2lat/src/php/Requirements.php

<?php
/**
 * Class to check requirements of the plugin.
 *
 * @package cyr-to-lat
 */

// phpcs:disable Generic.Commenting.DocComment.MissingShort
/** @noinspection PhpUndefinedClassInspection */
// phpcs:enable Generic.Commenting.DocComment.MissingShort

namespace CyrToLat;

use CyrToLat\Settings\Settings;
use WP_Filesystem_Direct;

/**
 * Class Requirements
 */
class Requirements {

	/**
	 * Settings.
	 *
	 * @var Settings
	 */
	protected $settings;

	/**
	 * Admin notices.
	 *
	 * @var AdminNotices
	 */
	protected $admin_notices;

	/**
	 * WP file system direct.
	 *
	 * @var WP_Filesystem_Direct
	 */
	protected $wp_filesystem;

	/**
	 * Restrict notices to Cyr To Lat settings admin screens.
	 *
	 * @var array
	 */
	protected $screen_ids;

	/**
	 * Requirements constructor.
	 *
	 * @param Settings                  $settings      Settings.
	 * @param AdminNotices              $admin_notices Admin notices.
	 * @param WP_Filesystem_Direct|null $wp_filesystem File system.
	 *
	 * @noinspection PhpUnusedLocalVariableInspection
	 */
	public function __construct( Settings $settings, AdminNotices $admin_notices, ?WP_Filesystem_Direct $wp_filesystem = null ) {
		$this->settings   = $settings;
		$this->screen_ids = [ 'screen_ids' => $this->settings->screen_ids() ];

		$this->admin_notices = $admin_notices;

		// @codeCoverageIgnoreStart
		if ( ! function_exists( 'WP_Filesystem' ) ) {
			/**
			 * Make the scope of $wp_file_descriptions global,
			 * so that when wp-admin/includes/file.php assigns to it, it is adjusting the global variable as intended.
			 */
			global $wp_file_descriptions;

			require_once ABSPATH . 'wp-admin/includes/file.php';
		}
		// @codeCoverageIgnoreEnd

		if ( ! WP_Filesystem() ) {
			return;
		}

		$this->wp_filesystem = $wp_filesystem;

		if ( ! $this->wp_filesystem ) {
			$this->wp_filesystem = new WP_Filesystem_Direct( null );
		}
	}

	/**
	 * Check if requirements are met.
	 *
	 * @return bool
	 */
	public function are_requirements_met(): bool {
		$is_php_version_required    = $this->is_php_version_required();
		$is_max_input_vars_required = $this->is_max_input_vars_required();

		if ( ! $is_php_version_required ) {
			add_action( 'admin_init', [ $this, 'deactivate_plugin' ] );
		}

		return $is_php_version_required && $is_max_input_vars_required;
	}

	/**
	 * Deactivate plugin.
	 */
	public function deactivate_plugin(): void {
		if ( is_plugin_active( plugin_basename( constant( 'CYR_TO_LAT_FILE' ) ) ) ) {
			deactivate_plugins( plugin_basename( constant( 'CYR_TO_LAT_FILE' ) ) );
			// phpcs:disable WordPress.Security.NonceVerification.Recommended
			if ( isset( $_GET['activate'] ) ) {
				unset( $_GET['activate'] );
			}
			// phpcs:enable WordPress.Security.NonceVerification.Recommended

			$this->admin_notices->add_notice(
				__( 'Cyr To Lat plugin has been deactivated.', 'cyr2lat' ),
				'notice notice-info is-dismissible'
			);
		}
	}

	/**
	 * Check php version.
	 *
	 * @return bool
	 * @noinspection ConstantCanBeUsedInspection
	 */
	private function is_php_version_required(): bool {
		if ( version_compare( constant( 'CYR_TO_LAT_MINIMUM_PHP_REQUIRED_VERSION' ), phpversion(), '>' ) ) {
			/* translators: 1: Current PHP version number, 2: Cyr To Lat version, 3: Minimum required PHP version number */
			$message = sprintf( __( 'Your server is running PHP version %1$s but Cyr To Lat %2$s requires at least %3$s.', 'cyr2lat' ), phpversion(), constant( 'CYR_TO_LAT_VERSION' ), constant( 'CYR_TO_LAT_MINIMUM_PHP_REQUIRED_VERSION' ) );

			$this->admin_notices->add_notice( $message, 'notice notice-error' );

			return false;
		}

		return true;
	}

	/**
	 * Check max_input_vars.
	 *
	 * @return bool
	 */
	private function is_max_input_vars_required(): bool {
		if ( constant( 'CYR_TO_LAT_REQUIRED_MAX_INPUT_VARS' ) > ini_get( 'max_input_vars' ) ) {
			if ( $this->wp_filesystem ) {
				$this->try_to_fix_max_input_vars();
			} else {
				$this->admin_notices->add_notice(
					__( 'Unable to get filesystem access.', 'cyr2lat' ),
					'notice notice-error',
					$this->screen_ids
				);
				$this->ask_to_increase_max_input_vars();

				return true;
			}
		}

		if ( constant( 'CYR_TO_LAT_REQUIRED_MAX_INPUT_VARS' ) > ini_get( 'max_input_vars' ) ) {
			$mtime     = $this->wp_filesystem->mtime( $this->get_user_ini_filename() );
			$ini_ttl   = (int) ini_get( 'user_ini.cache_ttl' );
			$time_left = ( $mtime + $ini_ttl ) - time();

			if ( 0 < $time_left ) {
				/* translators: 1: max_input_vars value, 2: Cyr To Lat version, 3: Minimum required max_input_vars */
				$message = sprintf( __( 'Your server is running PHP with max_input_vars=%1$d but Cyr To Lat %2$s requires at least %3$d.', 'cyr2lat' ), ini_get( 'max_input_vars' ), constant( 'CYR_TO_LAT_VERSION' ), constant( 'CYR_TO_LAT_REQUIRED_MAX_INPUT_VARS' ) );

				$message .= '<br>';
				/* translators: 1: .user.ini filename */
				$message .= sprintf( __( 'We have updated settings in %s.', 'cyr2lat' ), realpath( $this->get_user_ini_filename() ) );
				$message .= '<br>';
				/* translators: 1: Wait time in seconds */
				$message .= sprintf( __( 'Please try again in %d s.', 'cyr2lat' ), $time_left );

				$this->admin_notices->add_notice( $message, 'notice notice-error', $this->screen_ids );
			} else {
				$this->ask_to_increase_max_input_vars();
			}

			return true;
		}

		return true;
	}

	/**
	 * Try to fix max_input_vars.
	 */
	protected function try_to_fix_max_input_vars(): void {
		$user_ini_filename = $this->get_user_ini_filename();

		$content = $this->wp_filesystem->get_contents( $user_ini_filename );

		$content     = str_replace( [ "\r\n", "\r" ], "\n", $content );
		$content_arr = explode( "\n", $content );

		array_map(
			static function ( $line ) use ( &$value ) {
				if ( preg_match( '/(?<![; ])\s*?(max_input_vars).*?=\D*?(\d+)/i', $line, $matches ) ) {
					$value = (int) $matches[2];
				}
			},
			$content_arr
		);

		if ( $value >= constant( 'CYR_TO_LAT_REQUIRED_MAX_INPUT_VARS' ) ) {
			return;
		}

		$content_arr = array_filter(
			$content_arr,
			static function ( $line ) {
				return false === strpos( $line, 'max_input_vars' );
			}
		);
		if ( [ '' ] === $content_arr ) {
			$content_arr = [];
		}
		$content_arr[] = 'max_input_vars = ' . constant( 'CYR_TO_LAT_REQUIRED_MAX_INPUT_VARS' );
		$content       = implode( PHP_EOL, $content_arr );

		$this->wp_filesystem->put_contents( $user_ini_filename, $content );
	}

	/**
	 * Get .user.ini filename.
	 *
	 * @return string
	 */
	private function get_user_ini_filename(): string {
		return ABSPATH . 'wp-admin/' . ini_get( 'user_ini.filename' );
	}

	/**
	 * Asl user to increase max_input_vars.
	 */
	private function ask_to_increase_max_input_vars(): void {
		$message = __( 'Please increase max input vars limit up to 1500.', 'cyr2lat' );

		$message .= '<br>';
		$message .= __( 'See: <a href="https://sevenspark.com/docs/ubermenu-3/faqs/menu-item-limit" target="_blank">Increasing max input vars limit.</a>', 'cyr2lat' );

		$this->admin_notices->add_notice(
			$message,
			'notice notice-error',
			[ 'screen_ids' => $this->settings->screen_ids() ]
		);
	}
}

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