import { INestApplication } from '@nestjs/common';
import request from 'supertest';
import { App } from 'supertest/types';
import type { Response } from 'supertest';

export interface AccessTokenBody {
  accessToken: string;
}

export interface UserBody {
  id: string;
  email: string;
  name: string;
  role: string;
  isActive: boolean;
  createdAt: string;
  deactivatedAt: string | null;
}

export interface LoginResult {
  accessToken: string;
  refreshTokenCookie: string;
}

export function extractCookie(response: Response, name: string): string {
  const setCookie =
    (response.headers['set-cookie'] as unknown as string[] | undefined) ?? [];
  const raw = setCookie.find((cookie) => cookie.startsWith(`${name}=`));
  if (!raw) {
    throw new Error(`Expected a Set-Cookie header for "${name}"`);
  }
  return raw.split(';')[0];
}

export async function login(
  app: INestApplication<App>,
  email: string,
  password: string,
): Promise<LoginResult> {
  const response = await request(app.getHttpServer())
    .post('/api/v1/auth/login')
    .send({ email, password })
    .expect(200);
  return {
    accessToken: (response.body as AccessTokenBody).accessToken,
    refreshTokenCookie: extractCookie(response, 'refreshToken'),
  };
}