Function detectFileHint

packages/plugins/openapi/src/sdk/extract.ts:269–306

(
  schema: unknown,
  mediaType: string,
  r: DocResolver,
)

    : "base64";

const detectFileHint = (
  schema: unknown,
  mediaType: string,
  r: DocResolver,
): OperationFileHint | undefined => {
  const resolved = isRecord(schema) ? r.resolve<Record<string, unknown>>(schema) : null;
  if (!resolved) return undefined;

  if (!isJsonMediaType(mediaType) && binaryStringSchema(resolved)) {
    return OperationFileHint.make({
      kind: "binaryResponse",
      mimeType: Option.some(mediaType),
      dataField: Option.none(),
      sizeField: Option.none(),
      encoding: Option.none(),
    });
  }

  if (!isJsonMediaType(mediaType)) return undefined;

  const properties = resolved.properties;
  if (!isRecord(properties)) return undefined;
  const data = properties.data;
  const dataSchema = isRecord(data) ? r.resolve<Record<string, unknown>>(data) : null;
  if (!dataSchema || !binaryStringSchema(dataSchema)) return undefined;

  const size = properties.size;
  const sizeSchema = isRecord(size) ? r.resolve<Record<string, unknown>>(size) : null;
  const sizeField = sizeSchema && numericType(sizeSchema) ? "size" : undefined;

  return OperationFileHint.make({
    kind: "byteField",
    mimeType: Option.some("application/octet-stream"),
    dataField: Option.some("data"),
    sizeField: sizeField ? Option.some(sizeField) : Option.none(),
    encoding: Option.some(base64EncodingFromDescription(dataSchema)),
  });
};

const extractResponseBody = (
  operation: OperationObject,