export interface UploadedTexture {
  /** Content-addressed name in `data/textures/`: `{sha256}.{png|jpg|webp|gif}` (see `isTextureFile`). */
  file: string;
  width: number;
  height: number;
  bytes: number;
}

export interface StoredTexture {
  file: string;
  bytes: number;
  updatedAt: string;
}

/**
 * An upload is raw bytes rather than a multipart form: name, size and format are derived from the
 * image itself on the server, so there is nothing else to send.
 */
export interface TextureStore {
  /**
   * `type` only fills the Content-Type header – the server trusts the bytes, not the label – and
   * uploading the same picture twice yields the same file, the hash of its content.
   */
  upload(bytes: Blob | ArrayBuffer, type: string): Promise<UploadedTexture>;
  list(): Promise<StoredTexture[]>;
  delete(file: string): Promise<void>;
}