/sites/%d/stats/referrers/spam/delete?%s',
				Jetpack_Options::get_option( 'id' ),
				$this->filter_and_build_query_string(
					$req->get_query_params()
				)
			),
			'v1.1',
			array(
				'timeout' => 5,
				'method'  => 'POST',
			)
		);
	}

	/**
	 * Toggle modules on dashboard.
	 *
	 * @param WP_REST_Request $req The request object.
	 * @return array
	 */
	public function update_dashboard_modules( $req ) {
		// Clear dashboard modules cache.
		delete_transient( static::JETPACK_STATS_DASHBOARD_MODULES_CACHE_KEY );
		return WPCOM_Client::request_as_blog(
			sprintf(
				'/sites/%d/jetpack-stats-dashboard/modules?%s',
				Jetpack_Options::get_option( 'id' ),
				$this->filter_and_build_query_string(
					$req->get_query_params()
				)
			),
			'v2',
			array(
				'timeout' => 5,
				'method'  => 'POST',
				'headers' => array( 'Content-Type' => 'application/json' ),
			),
			$req->get_body(),
			'wpcom'
		);
	}

	/**
	 * Get modules on dashboard.
	 *
	 * @param WP_REST_Request $req The request object.
	 * @return array
	 */
	public function get_dashboard_modules( $req ) {
		return WPCOM_Client::request_as_blog_cached(
			sprintf(
				'/sites/%d/jetpack-stats-dashboard/modules?%s',
				Jetpack_Options::get_option( 'id' ),
				$this->filter_and_build_query_string(
					$req->get_query_params()
				)
			),
			'v2',
			array(
				'timeout' => 5,
			),
			null,
			'wpcom',
			true,
			static::JETPACK_STATS_DASHBOARD_MODULES_CACHE_KEY
		);
	}

	/**
	 * Update module settings on dashboard.
	 *
	 * @param WP_REST_Request $req The request object.
	 * @return array
	 */
	public function update_dashboard_module_settings( $req ) {
		// Clear dashboard modules cache.
		delete_transient( static::JETPACK_STATS_DASHBOARD_MODULE_SETTINGS_CACHE_KEY );
		return WPCOM_Client::request_as_blog(
			sprintf(
				'/sites/%d/jetpack-stats-dashboard/module-settings?%s',
				Jetpack_Options::get_option( 'id' ),
				$this->filter_and_build_query_string(
					$req->get_query_params()
				)
			),
			'v2',
			array(
				'timeout' => 5,
				'method'  => 'POST',
				'headers' => array( 'Content-Type' => 'application/json' ),
			),
			$req->get_body(),
			'wpcom'
		);
	}

	/**
	 * Get module settings on dashboard.
	 *
	 * @param WP_REST_Request $req The request object.
	 * @return array
	 */
	public function get_dashboard_module_settings( $req ) {
		return WPCOM_Client::request_as_blog_cached(
			sprintf(
				'/sites/%d/jetpack-stats-dashboard/module-settings?%s',
				Jetpack_Options::get_option( 'id' ),
				$this->filter_and_build_query_string(
					$req->get_query_params()
				)
			),
			'v2',
			array(
				'timeout' => 5,
			),
			null,
			'wpcom',
			true,
			static::JETPACK_STATS_DASHBOARD_MODULE_SETTINGS_CACHE_KEY
		);
	}

	/**
	 * Return a WP_Error object with a forbidden error.
	 */
	protected function get_forbidden_error() {
		$error_msg = esc_html__(
			'You are not allowed to perform this action.',
			'jetpack-stats-admin'
		);

		return new WP_Error( 'rest_forbidden', $error_msg, array( 'status' => rest_authorization_required_code() ) );
	}

	/**
	 * Filter and build query string from all the requested params.
	 *
	 * @param array $params The params to filter.
	 * @param array $keys_to_unset The keys to unset from the params array.
	 * @return string The filtered and built query string.
	 */
	protected function filter_and_build_query_string( $params, $keys_to_unset = array() ) {
		if ( isset( $params['rest_route'] ) ) {
			unset( $params['rest_route'] );
		}
		if ( ! empty( $keys_to_unset ) && is_array( $keys_to_unset ) ) {
			foreach ( $keys_to_unset as $key ) {
				if ( isset( $params[ $key ] ) ) {
					unset( $params[ $key ] );
				}
			}
		}
		return http_build_query( $params );
	}
}