import { UnauthorizedException } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { Test, TestingModule } from '@nestjs/testing';
import { DateTime } from '../../../common/value-objects/date-time/date-time';
import { Status } from '../../../common/value-objects/status/status';
import type { User } from '../../users/user';
import { UsersService } from '../../users/users.service';
import { RevokedAccessTokensRepository } from '../revoked-access-tokens.repository';
import { JwtStrategy } from './jwt.strategy';

describe('JwtStrategy', () => {
  let strategy: JwtStrategy;
  let usersService: jest.Mocked<
    Pick<UsersService, 'findById' | 'assertCanAuthenticate'>
  >;
  let revoked: jest.Mocked<Pick<RevokedAccessTokensRepository, 'exists'>>;

  const now = DateTime.fromUnixMs(1_700_000_000_000);
  const user: User = {
    id: 'user-1',
    username: 'alice',
    passwordHash: 'hash',
    privilegeId: null,
    isSuperadmin: false,
    status: Status.create('active'),
    createdAt: now,
    updatedAt: now,
    createdBy: 'user-1',
    updatedBy: 'user-1',
    privilege: null,
    employee: null,
    createdByUser: { id: 'user-1', username: 'alice' },
    updatedByUser: { id: 'user-1', username: 'alice' },
  };

  beforeEach(async () => {
    usersService = {
      findById: jest.fn(),
      assertCanAuthenticate: jest.fn(),
    };
    revoked = { exists: jest.fn() };

    const moduleRef: TestingModule = await Test.createTestingModule({
      providers: [
        JwtStrategy,
        {
          provide: ConfigService,
          useValue: {
            getOrThrow: () => 'test-secret-at-least-32-characters-long!!',
          },
        },
        { provide: UsersService, useValue: usersService },
        { provide: RevokedAccessTokensRepository, useValue: revoked },
      ],
    }).compile();

    strategy = moduleRef.get(JwtStrategy);
  });

  it('returns AuthUser for a valid access payload', async () => {
    revoked.exists.mockResolvedValue(false);
    usersService.findById.mockResolvedValue(user);

    await expect(
      strategy.validate({
        sub: 'user-1',
        username: 'alice',
        jti: 'jti-1',
        typ: 'access',
      }),
    ).resolves.toEqual({
      id: 'user-1',
      username: 'alice',
      jti: 'jti-1',
      isSuperadmin: false,
    });
  });

  it('maps isSuperadmin from the persisted user', async () => {
    revoked.exists.mockResolvedValue(false);
    usersService.findById.mockResolvedValue({ ...user, isSuperadmin: true });

    await expect(
      strategy.validate({
        sub: 'user-1',
        username: 'alice',
        jti: 'jti-1',
        typ: 'access',
      }),
    ).resolves.toEqual({
      id: 'user-1',
      username: 'alice',
      jti: 'jti-1',
      isSuperadmin: true,
    });
  });

  it('rejects revoked access tokens', async () => {
    revoked.exists.mockResolvedValue(true);

    await expect(
      strategy.validate({
        sub: 'user-1',
        username: 'alice',
        jti: 'jti-1',
        typ: 'access',
      }),
    ).rejects.toBeInstanceOf(UnauthorizedException);
  });

  it('rejects non-access token types', async () => {
    await expect(
      strategy.validate({
        sub: 'user-1',
        username: 'alice',
        jti: 'jti-1',
        typ: 'refresh' as 'access',
      }),
    ).rejects.toBeInstanceOf(UnauthorizedException);
  });
});