import {
  BadRequestException,
  ServiceUnavailableException,
} from '@nestjs/common';

import { TbankTokenService } from './tbank-token.service';

describe('TbankTokenService', () => {
  const config = {
    getOrThrow: jest.fn(() => 'MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY='),
  };
  let service: TbankTokenService;

  beforeEach(() => {
    jest.clearAllMocks();
    service = new TbankTokenService(config as never);
  });

  it('encrypts and decrypts a token through the configured crypto', () => {
    const encrypted = service.encrypt('secret-token');

    expect(encrypted).not.toContain('secret-token');
    expect(service.decrypt(encrypted)).toBe('secret-token');
    expect(config.getOrThrow).toHaveBeenCalledWith('TOKEN_ENCRYPTION_KEY');
  });

  it('translates invalid T-Bank token errors and preserves unrelated failures', async () => {
    await expect(
      service.translateInvalidToken(() =>
        Promise.reject(new Error('INVALID_TBANK_TOKEN')),
      ),
    ).rejects.toEqual(expect.any(BadRequestException));

    const unavailable = new ServiceUnavailableException({
      code: 'TBANK_UNAVAILABLE',
    });
    await expect(
      service.translateInvalidToken(() => Promise.reject(unavailable)),
    ).rejects.toBe(unavailable);
  });
});