import { describe, it, expect, vi, type Mock } from 'vitest';
import { LogoutUseCase, type LogoutResult, type LogoutErrorCode } from './LogoutUseCase';
import type { IdentitySessionPort } from '../ports/IdentitySessionPort';
import type { UseCaseOutputPort, Logger } from '@core/shared/application';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
import { Result } from '@core/shared/application/Result';

describe('LogoutUseCase', () => {
  let sessionPort: {
    clearSession: Mock;
    getCurrentSession: Mock;
    createSession: Mock;
  };
  let logger: Logger & { error: Mock };
  let output: UseCaseOutputPort<LogoutResult> & { present: Mock };
  let useCase: LogoutUseCase;

  beforeEach(() => {
    sessionPort = {
      clearSession: vi.fn(),
      getCurrentSession: vi.fn(),
      createSession: vi.fn(),
    };

    logger = {
      debug: vi.fn(),
      info: vi.fn(),
      warn: vi.fn(),
      error: vi.fn(),
    } as unknown as Logger & { error: Mock };

    output = {
      present: vi.fn(),
    } as unknown as UseCaseOutputPort<LogoutResult> & { present: Mock };

    useCase = new LogoutUseCase(
      sessionPort as unknown as IdentitySessionPort,
      logger,
      output,
    );
  });

  it('clears the current session and presents success', async () => {
    const result: Result<void, ApplicationErrorCode<LogoutErrorCode, { message: string }>> =
      await useCase.execute();

    expect(result.isOk()).toBe(true);
    expect(result.unwrap()).toBeUndefined();

    expect(sessionPort.clearSession).toHaveBeenCalledTimes(1);
    expect(output.present).toHaveBeenCalledTimes(1);
    expect(output.present).toHaveBeenCalledWith({ success: true });
  });

  it('wraps unexpected errors as REPOSITORY_ERROR and logs them', async () => {
    const error = new Error('Session clear failed');
    sessionPort.clearSession.mockRejectedValue(error);

    const result: Result<void, ApplicationErrorCode<LogoutErrorCode, { message: string }>> =
      await useCase.execute();

    expect(result.isErr()).toBe(true);
    const err = result.unwrapErr();
    expect(err.code).toBe('REPOSITORY_ERROR');
    expect(err.details.message).toBe('Session clear failed');

    expect(output.present).not.toHaveBeenCalled();
    expect(logger.error).toHaveBeenCalled();
  });
});
