WP_REST_Font_Faces_Controller::validate_create_font_face_settings( string $value, WP_REST_Request $request ): true|WP_Error

163	public function validate_create_font_face_settings( $value, $request ) {164		$settings = json_decode( $value, true );165 166		// Check settings string is valid JSON.167		if ( null === $settings ) {168			return new WP_Error(169				'rest_invalid_param',170				__( 'font_face_settings parameter must be a valid JSON string.' ),171				array( 'status' => 400 )172			);173		}174 175		// Check that the font face settings match the theme.json schema.176		$schema             = $this->get_item_schema()['properties']['font_face_settings'];177		$has_valid_settings = rest_validate_value_from_schema( $settings, $schema, 'font_face_settings' );178 179		if ( is_wp_error( $has_valid_settings ) ) {180			$has_valid_settings->add_data( array( 'status' => 400 ) );181			return $has_valid_settings;182		}183 184		// Check that none of the required settings are empty values.185		$required = $schema['required'];186		foreach ( $required as $key ) {187			if ( isset( $settings[ $key ] ) && ! $settings[ $key ] ) {188				return new WP_Error(189					'rest_invalid_param',190					/* translators: %s: Name of the missing font face settings parameter, e.g. "font_face_settings[src]". */191					sprintf( __( '%s cannot be empty.' ), "font_face_setting[ $key ]" ),192					array( 'status' => 400 )193				);194			}195		}196 197		$srcs  = is_array( $settings['src'] ) ? $settings['src'] : array( $settings['src'] );198		$files = $request->get_file_params();199 200		foreach ( $srcs as $src ) {201			// Check that each src is a non-empty string.202			$src = ltrim( $src );203			if ( empty( $src ) ) {204				return new WP_Error(205					'rest_invalid_param',206					/* translators: %s: Font face source parameter name: "font_face_settings[src]". */207					sprintf( __( '%s values must be non-empty strings.' ), 'font_face_settings[src]' ),208					array( 'status' => 400 )209				);210			}211 212			// Check that srcs are valid URLs or file references.213			if ( false === wp_http_validate_url( $src ) && ! isset( $files[ $src ] ) ) {214				return new WP_Error(215					'rest_invalid_param',216					/* translators: 1: Font face source parameter name: "font_face_settings[src]", 2: The invalid src value. */217					sprintf( __( '%1$s value "%2$s" must be a valid URL or file reference.' ), 'font_face_settings[src]', $src ),218					array( 'status' => 400 )219				);220			}221		}222 223		// Check that each file in the request references a src in the settings.224		foreach ( array_keys( $files ) as $file ) {225			if ( ! in_array( $file, $srcs, true ) ) {226				return new WP_Error(227					'rest_invalid_param',228					/* translators: 1: File key (e.g. "file-0") in the request data, 2: Font face source parameter name: "font_face_settings[src]". */229					sprintf( __( 'File %1$s must be used in %2$s.' ), $file, 'font_face_settings[src]' ),230					array( 'status' => 400 )231				);232			}233		}234 235		return true;236	}