two-factor-extended/includes/class-dependency-checker.php

<?php
/**
 * Dependency checker class
 *
 * @package TwoFactorExtended
 * @since 0.1.0
 */

// Prevent direct access.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class Two_Factor_Extended_Dependency_Checker
 *
 * Checks plugin dependencies and displays admin notices when not met.
 *
 * @since 0.1.0
 */
class Two_Factor_Extended_Dependency_Checker {

	/**
	 * Minimum required WordPress version.
	 *
	 * @since 0.1.0
	 * @var string
	 */
	const MIN_WP_VERSION = '6.7';

	/**
	 * Minimum required PHP version.
	 *
	 * @since 0.1.0
	 * @var string
	 */
	const MIN_PHP_VERSION = '8.2';

	/**
	 * Check all dependencies.
	 *
	 * @since 0.1.0
	 *
	 * @return bool True if all dependencies are met, false otherwise.
	 */
	public static function check_dependencies(): bool {
		$checks = array(
			self::check_two_factor_plugin(),
			self::check_wordpress_version(),
			self::check_php_version(),
		);

		return ! in_array( false, $checks, true );
	}

	/**
	 * Check if Two Factor plugin is active.
	 *
	 * @since 0.1.0
	 *
	 * @return bool True if Two Factor plugin is active, false otherwise.
	 */
	public static function check_two_factor_plugin(): bool {
		return class_exists( 'Two_Factor_Core' );
	}

	/**
	 * Check WordPress version.
	 *
	 * @since 0.1.0
	 *
	 * @return bool True if WordPress version is sufficient, false otherwise.
	 */
	public static function check_wordpress_version(): bool {
		global $wp_version;

		return version_compare( $wp_version, self::MIN_WP_VERSION, '>=' );
	}

	/**
	 * Check PHP version.
	 *
	 * @since 0.1.0
	 *
	 * @return bool True if PHP version is sufficient, false otherwise.
	 */
	public static function check_php_version(): bool {
		return version_compare( PHP_VERSION, self::MIN_PHP_VERSION, '>=' );
	}

	/**
	 * Display admin notice for missing Two Factor plugin.
	 *
	 * @since 0.1.0
	 */
	public static function admin_notice_missing_two_factor(): void {
		?>
		<div class="notice notice-error">
			<p>
				<strong><?php esc_html_e( 'Two-Factor Extended', 'two-factor-extended' ); ?>:</strong>
				<?php
				printf(
					/* translators: %s: Two Factor plugin link */
					esc_html__( 'This plugin requires the %s plugin to be installed and activated.', 'two-factor-extended' ),
					'<a href="https://wordpress.org/plugins/two-factor/" target="_blank" rel="noopener noreferrer">' . esc_html__( 'Two Factor', 'two-factor-extended' ) . '</a>'
				);
				?>
			</p>
		</div>
		<?php
	}

	/**
	 * Display admin notice for insufficient WordPress version.
	 *
	 * @since 0.1.0
	 */
	public static function admin_notice_wordpress_version(): void {
		?>
		<div class="notice notice-error">
			<p>
				<strong><?php esc_html_e( 'Two-Factor Extended', 'two-factor-extended' ); ?>:</strong>
				<?php
				printf(
					/* translators: %s: Minimum WordPress version */
					esc_html__( 'This plugin requires WordPress %s or higher.', 'two-factor-extended' ),
					esc_html( self::MIN_WP_VERSION )
				);
				?>
			</p>
		</div>
		<?php
	}

	/**
	 * Display admin notice for insufficient PHP version.
	 *
	 * @since 0.1.0
	 */
	public static function admin_notice_php_version(): void {
		?>
		<div class="notice notice-error">
			<p>
				<strong><?php esc_html_e( 'Two-Factor Extended', 'two-factor-extended' ); ?>:</strong>
				<?php
				printf(
					/* translators: %s: Minimum PHP version */
					esc_html__( 'This plugin requires PHP %s or higher.', 'two-factor-extended' ),
					esc_html( self::MIN_PHP_VERSION )
				);
				?>
			</p>
		</div>
		<?php
	}

	/**
	 * Display all relevant admin notices.
	 *
	 * @since 0.1.0
	 */
	public static function display_admin_notices(): void {
		if ( ! self::check_two_factor_plugin() ) {
			self::admin_notice_missing_two_factor();
		}

		if ( ! self::check_wordpress_version() ) {
			self::admin_notice_wordpress_version();
		}

		if ( ! self::check_php_version() ) {
			self::admin_notice_php_version();
		}
	}
}