import { describe, it, expect, vi, beforeEach } from 'vitest';
import { ConfirmCheckoutUseCase } from '@/packages/application/use-cases/ConfirmCheckoutUseCase';
import { Result } from '@/packages/shared/result/Result';
import { CheckoutPrice } from '@/packages/domain/value-objects/CheckoutPrice';
import { CheckoutState } from '@/packages/domain/value-objects/CheckoutState';
import { CheckoutConfirmation } from '@/packages/domain/value-objects/CheckoutConfirmation';
import type { ICheckoutService } from '@/packages/application/ports/ICheckoutService';
import type { ICheckoutConfirmationPort } from '@/packages/application/ports/ICheckoutConfirmationPort';

describe('ConfirmCheckoutUseCase - Enhanced with Confirmation Port', () => {
  let mockCheckoutService: ICheckoutService;
  let mockConfirmationPort: ICheckoutConfirmationPort;
  let useCase: ConfirmCheckoutUseCase;

  beforeEach(() => {
    mockCheckoutService = {
      extractCheckoutInfo: vi.fn(),
      proceedWithCheckout: vi.fn(),
    };

    mockConfirmationPort = {
      requestCheckoutConfirmation: vi.fn(),
    };

    useCase = new ConfirmCheckoutUseCase(mockCheckoutService, mockConfirmationPort);
  });

  describe('with new confirmation flow', () => {
    it('should extract price, request confirmation via port, then proceed', async () => {
      const price = CheckoutPrice.fromString('$25.50');
      const state = CheckoutState.ready();

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      vi.mocked(mockConfirmationPort.requestCheckoutConfirmation).mockResolvedValue(
        Result.ok(CheckoutConfirmation.create('confirmed'))
      );

      vi.mocked(mockCheckoutService.proceedWithCheckout).mockResolvedValue(
        Result.ok(undefined)
      );

      const result = await useCase.execute();

      expect(mockCheckoutService.extractCheckoutInfo).toHaveBeenCalled();
      expect(mockConfirmationPort.requestCheckoutConfirmation).toHaveBeenCalledWith(
        expect.objectContaining({
          price: expect.any(CheckoutPrice),
          state: expect.any(CheckoutState),
        })
      );
      expect(mockCheckoutService.proceedWithCheckout).toHaveBeenCalled();
      expect(result.isOk()).toBe(true);
    });

    it('should not proceed if user cancels confirmation', async () => {
      const price = CheckoutPrice.fromString('$10.00');
      const state = CheckoutState.ready();

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      vi.mocked(mockConfirmationPort.requestCheckoutConfirmation).mockResolvedValue(
        Result.ok(CheckoutConfirmation.create('cancelled'))
      );

      const result = await useCase.execute();

      expect(mockConfirmationPort.requestCheckoutConfirmation).toHaveBeenCalled();
      expect(mockCheckoutService.proceedWithCheckout).not.toHaveBeenCalled();
      expect(result.isErr()).toBe(true);
      expect(result.unwrapErr().message).toContain('cancelled');
    });

    it('should not proceed if confirmation times out', async () => {
      const price = CheckoutPrice.fromString('$10.00');
      const state = CheckoutState.ready();

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      vi.mocked(mockConfirmationPort.requestCheckoutConfirmation).mockResolvedValue(
        Result.ok(CheckoutConfirmation.create('timeout'))
      );

      const result = await useCase.execute();

      expect(mockConfirmationPort.requestCheckoutConfirmation).toHaveBeenCalled();
      expect(mockCheckoutService.proceedWithCheckout).not.toHaveBeenCalled();
      expect(result.isErr()).toBe(true);
      expect(result.unwrapErr().message).toContain('timeout');
    });

    it('should fail if confirmation port returns error', async () => {
      const price = CheckoutPrice.fromString('$10.00');
      const state = CheckoutState.ready();

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      vi.mocked(mockConfirmationPort.requestCheckoutConfirmation).mockResolvedValue(
        Result.err(new Error('IPC communication failed'))
      );

      const result = await useCase.execute();

      expect(result.isErr()).toBe(true);
      expect(result.unwrapErr().message).toContain('IPC communication failed');
    });

    it('should still reject insufficient funds before confirmation', async () => {
      const price = CheckoutPrice.fromString('$10.00');
      const state = CheckoutState.insufficientFunds();

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      const result = await useCase.execute();

      expect(mockConfirmationPort.requestCheckoutConfirmation).not.toHaveBeenCalled();
      expect(mockCheckoutService.proceedWithCheckout).not.toHaveBeenCalled();
      expect(result.isErr()).toBe(true);
      expect(result.unwrapErr().message).toContain('Insufficient funds');
    });

    it('should pass session metadata to confirmation port', async () => {
      const price = CheckoutPrice.fromString('$25.50');
      const state = CheckoutState.ready();
      const sessionMetadata = {
        sessionName: 'Test Race',
        trackId: 'spa',
        carIds: ['car1', 'car2'],
      };

      vi.mocked(mockCheckoutService.extractCheckoutInfo).mockResolvedValue(
        Result.ok({ price, state, buttonHtml: '' })
      );

      vi.mocked(mockConfirmationPort.requestCheckoutConfirmation).mockResolvedValue(
        Result.ok(CheckoutConfirmation.create('confirmed'))
      );

      vi.mocked(mockCheckoutService.proceedWithCheckout).mockResolvedValue(
        Result.ok(undefined)
      );

      const result = await useCase.execute(sessionMetadata);

      expect(mockConfirmationPort.requestCheckoutConfirmation).toHaveBeenCalledWith(
        expect.objectContaining({
          sessionMetadata,
          timeoutMs: expect.any(Number),
        })
      );
      expect(result.isOk()).toBe(true);
    });
  });
});