import { constructStack } from "@aws-sdk/middleware-stack";
import { Command as ICommand, Handler, MetadataBearer, MiddlewareStack as IMiddlewareStack } from "@aws-sdk/types";

export abstract class Command<
  Input extends ClientInput,
  Output extends ClientOutput,
  ResolvedClientConfiguration,
  ClientInput extends object = any,
  ClientOutput extends MetadataBearer = any
> implements ICommand<ClientInput, Input, ClientOutput, Output, ResolvedClientConfiguration>
{
  abstract input: Input;
  readonly middlewareStack: IMiddlewareStack<Input, Output> = constructStack<Input, Output>();
  abstract resolveMiddleware(
    stack: IMiddlewareStack<ClientInput, ClientOutput>,
    configuration: ResolvedClientConfiguration,
    options: any
  ): Handler<Input, Output>;
}