Adds WC_WCCOM_Site_Installer_Requirements_Check class

includes/wccom-site/class-wc-wccom-site-installer-requirements-check.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * WooCommerce.com Product Installation Requirements Check.
+ *
+ * @package WooCommerce\WooCommerce_Site
+ * @since   3.8.0
+ */
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * WC_WCCOM_Site_Installer_Requirements_Check Class
+ * Contains functionality to check the necessary requirements for the installer.
+ */
+class WC_WCCOM_Site_Installer_Requirements_Check {
+	/**
+	 * Check if the site met the requirements
+	 *
+	 * @version 3.8.0
+	 * @return bool|WP_Error Does the site met the requirements?
+	 */
+	public static function met_requirements() {
+		$errs = [];
+
+		if ( ! self::met_wp_cron_requirement() ) {
+			$errs[] = 'wp-cron';
+		}
+
+		if ( ! self::met_filesystem_requirement() ) {
+			$errs[] = 'filesystem';
+		}
+
+		if ( ! empty( $errs ) ) {
+			// translators: %s: Requirements unmet.
+			return new WP_Error( 'requirements_not_met', sprintf( __( 'Server requirements not met, missing requirement(s): %s.', 'woocommerce' ), implode( ', ', $errs ) ), array( 'status' => 503 ) );
+		}
+
+		return true;
+	}
+
+	/**
+	 * Validates if WP CRON is enabled.
+	 *
+	 * @since 3.8.0
+	 * @return bool
+	 */
+	private static function met_wp_cron_requirement() {
+		return ! ( defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON );
+	}
+
+	/**
+	 * Validates if `WP_CONTENT_DIR` is writable.
+	 *
+	 * @since 3.8.0
+	 * @return bool
+	 */
+	private static function met_filesystem_requirement() {
+		return is_writable( WP_CONTENT_DIR );
+	}
+}