->endpoint_die(
				'Lite Connect: nonce verification failed',
				$response
			);
		}

		unset( $response['nonce'] );

		$settings         = get_option( Integration::get_option_name(), [] );
		$settings['site'] = $response;

		update_option( API::GENERATE_KEY_ATTEMPT_COUNTER_OPTION, 0 );
		update_option( Integration::get_option_name(), $settings );

		exit();
	}

	/**
	 * Finish the endpoint execution with wp_die().
	 *
	 * @since 1.7.4
	 *
	 * @param string $title    Log message title.
	 * @param array  $response Response.
	 *
	 * @noinspection ForgottenDebugOutputInspection
	 */
	private function endpoint_die( $title = '', $response = [] ) { // phpcs:ignore WPForms.PHP.HooksMethod.InvalidPlaceForAddingHooks

		$this->log( $title, $response );

		// We call wp_die too early, before the query is run.
		// So, we should remove some filters to avoid having PHP notices in error log.
		remove_filter( 'wp_robots', 'wp_robots_noindex_embeds' );
		remove_filter( 'wp_robots', 'wp_robots_noindex_search' );

		wp_die(
			esc_html__( 'This is the Lite Connect endpoint page.', 'wpforms-lite' ),
			'Lite Connect endpoint',
			400
		);
	}

	/**
	 * Log message.
	 *
	 * @since 1.7.4
	 *
	 * @param string $title    Log message title.
	 * @param array  $response Response.
	 */
	private function log( $title = '', $response = [] ) {

		if ( ! $title ) {
			return;
		}

		wpforms_log(
			$title,
			[
				'response' => $response,
				'request'  => [
					'domain'      => isset( $response['domain'] ) ? $response['domain'] : '',
					'admin_email' => Integration::get_enabled_email(),
				],
			],
			[ 'type' => [ 'error' ] ]
		);
	}
}