import { InputParseError } from "../../entities/errors/common";
import {
  signInInputSchema,
  type ISignInUseCase,
  type SignInOutput,
  type SignInRequestContext,
} from "../../application/use-cases/sign-in.use-case";

function presenter(value: SignInOutput) {
  return value.cookie;
}

export type ISignInController = ReturnType<typeof signInController>;

export const signInController =
  (signInUseCase: ISignInUseCase) =>
  async (
    input: unknown,
    // Server-derived, never part of the client-facing input schema (B2):
    // the tRPC adapter builds it from trusted proxy headers.
    requestContext?: SignInRequestContext,
  ): Promise<ReturnType<typeof presenter>> => {
    const parsed = signInInputSchema.safeParse(input);
    if (!parsed.success) {
      throw new InputParseError("Invalid sign-in input", {
        cause: parsed.error,
      });
    }
    const result = await signInUseCase({
      ...parsed.data,
      clientIp: requestContext?.clientIp,
    });
    return presenter(result);
  };