class-wc-connect-error-notice.php

<?php
/**
 * Show admin notices when errors occur
 */
namespace Automattic\WCShipping\Connect;

// No direct access please
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class WC_Connect_Error_Notice {


	private static $inst = null;

	public static function instance() {
		if ( null === self::$inst ) {
			self::$inst = new WC_Connect_Error_Notice();
		}

		return self::$inst;
	}

	public function enable_notice( $error = true ) {
		WC_Connect_Options::update_option( 'error_notice', $error );
	}

	public function disable_notice() {
		WC_Connect_Options::update_option( 'error_notice', false );
	}

	public function render_notice() {
		$error_notice = filter_input( INPUT_GET, 'wcshipping-error-notice', FILTER_SANITIZE_ENCODED );
		if ( 'disable' === $error_notice ) {
			WC_Connect_Options::update_option( 'error_notice', false );
			$url = remove_query_arg( 'wcshipping-error-notice' );
			wp_safe_redirect( $url );
			exit;
		}

		if ( $this->notice_enabled() ) {
			$this->show_notice();
		}
	}

	private function notice_enabled() {
			return WC_Connect_Options::get_option( 'error_notice', false );
	}

	private function show_notice() {
		$link_dismiss = add_query_arg( array( 'wcshipping-error-notice' => 'disable' ) );
		$error        = $this->notice_enabled();

		if ( ! is_wp_error( $error ) ) {
			return;
		}

		$message = false;

		if (
			'product_missing_weight' === $error->get_error_code() ||
			'product_missing_dimension' === $error->get_error_code()
		) {
			$error_data = $error->get_error_data();
			$id         = $error_data['product_id'];
			$product    = wc_get_product( $id );

			if (
				! $product ||
				( $product->has_weight() &&
					$product->get_length() &&
					$product->get_height() &&
					$product->get_width()
				)
			) {
				$this->disable_notice();
				return;
			}

			$product_name = $product->get_name();
			$product_id   = $product->is_type( 'variation' ) ? $product->get_parent_id() : $product->get_id();
			$message      = sprintf(
				// translators: %1$s: link to product edit page, %2$s: product name
				__( '<strong>"%2$s" is missing weight, length, width, or height.</strong><br />Shipping rates cannot be calculated. <a href="%1$s">Enter dimensions and weight for %2$s</a> so your customers can purchase this item.', 'woocommerce-shipping' ),
				get_edit_post_link( $product_id ),
				$product_name
			);
		}

		if ( ! $message ) {
			return;
		}

		$allowed_html = array(
			'a'      => array( 'href' => array() ),
			'strong' => array(),
			'br'     => array(),
		);
		?>
		<div class='notice notice-error' style="position: relative;">
			<a href="<?php echo esc_url( $link_dismiss ); ?>" style="text-decoration: none;" class="notice-dismiss" title="<?php esc_attr_e( 'Dismiss this notice', 'woocommerce-shipping' ); ?>"></a>
			<p><?php echo wp_kses( $message, $allowed_html ); ?></p>
		</div>
		<?php
		echo '';
	}
}