import { Message } from "./eventStream";
import { HttpRequest } from "./http";
export type DateInput = number | string | Date;
export interface SigningArguments {
  signingDate?: DateInput;
  signingService?: string;
  signingRegion?: string;
}
export interface RequestSigningArguments extends SigningArguments {
  unsignableHeaders?: Set<string>;
  signableHeaders?: Set<string>;
}
export interface RequestPresigningArguments extends RequestSigningArguments {
  expiresIn?: number;
  unhoistableHeaders?: Set<string>;
}
export interface EventSigningArguments extends SigningArguments {
  priorSignature: string;
}
export interface RequestPresigner {
  presign(
    requestToSign: HttpRequest,
    options?: RequestPresigningArguments
  ): Promise<HttpRequest>;
}
export interface RequestSigner {
  sign(
    requestToSign: HttpRequest,
    options?: RequestSigningArguments
  ): Promise<HttpRequest>;
}
export interface StringSigner {
  sign(stringToSign: string, options?: SigningArguments): Promise<string>;
}
export interface FormattedEvent {
  headers: Uint8Array;
  payload: Uint8Array;
}
export interface EventSigner {
  sign(event: FormattedEvent, options: EventSigningArguments): Promise<string>;
}
export interface SignableMessage {
  message: Message;
  priorSignature: string;
}
export interface SignedMessage {
  message: Message;
  signature: string;
}
export interface MessageSigner {
  signMessage(
    message: SignableMessage,
    args: SigningArguments
  ): Promise<SignedMessage>;
  sign(
    event: SignableMessage,
    options: SigningArguments
  ): Promise<SignedMessage>;
}