import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication, ValidationPipe } from '@nestjs/common';
import * as request from 'supertest';
import { AppModule } from '../src/app.module';
import { getRepositoryToken } from '@nestjs/typeorm';
import { User } from '../src/modules/users/entities/user.entity';
import { Store } from '../src/modules/stores/entities/store.entity';
import { StoreUser, StoreUserRole } from '../src/modules/stores/entities/store-user.entity';
import { Video, VideoStatus } from '../src/modules/videos/entities/video.entity';
import { InventoryItem } from '../src/modules/inventory/entities/inventory-item.entity';
import { ValidationRequest, ValidationRequestStatus } from '../src/modules/validations/entities/validation-request.entity';
import { ValidationResponse } from '../src/modules/validations/entities/validation-response.entity';
import { JwtService } from '@nestjs/jwt';
import { Repository } from 'typeorm';

describe('ValidationsController (e2e)', () => {
  let app: INestApplication;
  let jwtService: JwtService;
  let userRepository: Repository<User>;
  let storeRepository: Repository<Store>;
  let storeUserRepository: Repository<StoreUser>;
  let videoRepository: Repository<Video>;
  let inventoryRepository: Repository<InventoryItem>;
  let validationRequestRepository: Repository<ValidationRequest>;
  let validationResponseRepository: Repository<ValidationResponse>;

  let testUser: User;
  let testStore: Store;
  let testVideo: Video;
  let testItems: InventoryItem[];
  let testValidationRequest: ValidationRequest;
  let authToken: string;

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleFixture.createNestApplication();
    app.useGlobalPipes(new ValidationPipe({ whitelist: true }));
    await app.init();

    jwtService = moduleFixture.get<JwtService>(JwtService);
    userRepository = moduleFixture.get(getRepositoryToken(User));
    storeRepository = moduleFixture.get(getRepositoryToken(Store));
    storeUserRepository = moduleFixture.get(getRepositoryToken(StoreUser));
    videoRepository = moduleFixture.get(getRepositoryToken(Video));
    inventoryRepository = moduleFixture.get(getRepositoryToken(InventoryItem));
    validationRequestRepository = moduleFixture.get(getRepositoryToken(ValidationRequest));
    validationResponseRepository = moduleFixture.get(getRepositoryToken(ValidationResponse));

    // Create test user
    testUser = await userRepository.save({
      phone: '+529876543210',
      name: 'Test Validation User',
    });

    // Create test store
    testStore = await storeRepository.save({
      name: 'Test Validation Store',
      ownerId: testUser.id,
    });

    // Create store-user relationship
    await storeUserRepository.save({
      storeId: testStore.id,
      userId: testUser.id,
      role: StoreUserRole.OWNER,
    });

    // Create test video
    testVideo = await videoRepository.save({
      storeId: testStore.id,
      uploadedById: testUser.id,
      fileName: 'test-validation.mp4',
      status: VideoStatus.COMPLETED,
    });

    // Create test inventory items
    testItems = await inventoryRepository.save([
      {
        storeId: testStore.id,
        detectedByVideoId: testVideo.id,
        name: 'Validation Item 1',
        quantity: 5,
        detectionConfidence: 0.65,
      },
      {
        storeId: testStore.id,
        detectedByVideoId: testVideo.id,
        name: 'Validation Item 2',
        quantity: 10,
        detectionConfidence: 0.85,
      },
      {
        storeId: testStore.id,
        detectedByVideoId: testVideo.id,
        name: 'Validation Item 3',
        quantity: 3,
        detectionConfidence: 0.55,
      },
    ]);

    // Create test validation request
    const expiresAt = new Date();
    expiresAt.setHours(expiresAt.getHours() + 24);

    testValidationRequest = await validationRequestRepository.save({
      videoId: testVideo.id,
      userId: testUser.id,
      storeId: testStore.id,
      totalItems: 3,
      triggerReason: 'LOW_CONFIDENCE_DETECTIONS',
      probabilityScore: 0.35,
      expiresAt,
    });

    // Generate auth token
    authToken = jwtService.sign({ sub: testUser.id, phone: testUser.phone });
  });

  afterAll(async () => {
    // Cleanup
    await validationResponseRepository.delete({ requestId: testValidationRequest.id });
    await validationRequestRepository.delete({ id: testValidationRequest.id });
    for (const item of testItems) {
      await inventoryRepository.delete({ id: item.id });
    }
    await videoRepository.delete({ id: testVideo.id });
    await storeUserRepository.delete({ storeId: testStore.id });
    await storeRepository.delete({ id: testStore.id });
    await userRepository.delete({ id: testUser.id });
    await app.close();
  });

  describe('/validations/:requestId/items (GET)', () => {
    it('should return validation items', async () => {
      const response = await request(app.getHttpServer())
        .get(`/validations/${testValidationRequest.id}/items`)
        .set('Authorization', `Bearer ${authToken}`)
        .expect(200);

      expect(response.body.request).toBeDefined();
      expect(response.body.request.id).toBe(testValidationRequest.id);
      expect(response.body.items).toBeDefined();
      expect(Array.isArray(response.body.items)).toBe(true);
    });

    it('should return 404 for non-existent request', async () => {
      await request(app.getHttpServer())
        .get('/validations/00000000-0000-0000-0000-000000000000/items')
        .set('Authorization', `Bearer ${authToken}`)
        .expect(404);
    });

    it('should reject without auth', async () => {
      await request(app.getHttpServer())
        .get(`/validations/${testValidationRequest.id}/items`)
        .expect(401);
    });
  });

  describe('/validations/:requestId/submit (POST)', () => {
    it('should submit validation responses', async () => {
      // First, create a fresh validation request for this test
      const expiresAt = new Date();
      expiresAt.setHours(expiresAt.getHours() + 24);

      const freshRequest = await validationRequestRepository.save({
        videoId: testVideo.id,
        userId: testUser.id,
        storeId: testStore.id,
        totalItems: 3,
        triggerReason: 'TEST',
        probabilityScore: 0.5,
        expiresAt,
      });

      const response = await request(app.getHttpServer())
        .post(`/validations/${freshRequest.id}/submit`)
        .set('Authorization', `Bearer ${authToken}`)
        .send({
          responses: [
            { inventoryItemId: testItems[0].id, isCorrect: true },
            { inventoryItemId: testItems[1].id, isCorrect: false, correctedQuantity: 12 },
            { inventoryItemId: testItems[2].id, isCorrect: true },
          ],
        })
        .expect(201);

      expect(response.body.message).toBe('Validacion completada exitosamente');
      expect(response.body.itemsValidated).toBe(3);
      expect(response.body.creditsRewarded).toBeGreaterThanOrEqual(0);

      // Cleanup
      await validationResponseRepository.delete({ requestId: freshRequest.id });
      await validationRequestRepository.delete({ id: freshRequest.id });
    });

    it('should reject invalid item IDs', async () => {
      await request(app.getHttpServer())
        .post(`/validations/${testValidationRequest.id}/submit`)
        .set('Authorization', `Bearer ${authToken}`)
        .send({
          responses: [
            { inventoryItemId: 'invalid-uuid', isCorrect: true },
          ],
        })
        .expect(400);
    });
  });

  describe('/validations/:requestId/skip (POST)', () => {
    it('should skip validation', async () => {
      // Create fresh request for skip test
      const expiresAt = new Date();
      expiresAt.setHours(expiresAt.getHours() + 24);

      const skipRequest = await validationRequestRepository.save({
        videoId: testVideo.id,
        userId: testUser.id,
        storeId: testStore.id,
        totalItems: 3,
        triggerReason: 'TEST_SKIP',
        probabilityScore: 0.5,
        expiresAt,
      });

      const response = await request(app.getHttpServer())
        .post(`/validations/${skipRequest.id}/skip`)
        .set('Authorization', `Bearer ${authToken}`)
        .expect(201);

      expect(response.body.message).toBe('Validacion omitida');

      // Verify status changed
      const updatedRequest = await validationRequestRepository.findOne({
        where: { id: skipRequest.id },
      });
      expect(updatedRequest?.status).toBe(ValidationRequestStatus.SKIPPED);

      // Cleanup
      await validationRequestRepository.delete({ id: skipRequest.id });
    });

    it('should reject skip for already processed request', async () => {
      // Create and complete a request
      const expiresAt = new Date();
      expiresAt.setHours(expiresAt.getHours() + 24);

      const completedRequest = await validationRequestRepository.save({
        videoId: testVideo.id,
        userId: testUser.id,
        storeId: testStore.id,
        totalItems: 3,
        triggerReason: 'TEST_COMPLETED',
        probabilityScore: 0.5,
        status: ValidationRequestStatus.COMPLETED,
        expiresAt,
      });

      await request(app.getHttpServer())
        .post(`/validations/${completedRequest.id}/skip`)
        .set('Authorization', `Bearer ${authToken}`)
        .expect(400);

      // Cleanup
      await validationRequestRepository.delete({ id: completedRequest.id });
    });
  });
});