import { INestApplication } from '@nestjs/common';
import * as request from 'supertest';
import { createTestApp, createTestUser, generateTokensForUser, cleanupTestData } from './test-utils';
import { CreateProjectDto } from '../src/modules/projects/dto/create-project.dto';
import { UpdateProjectDto } from '../src/modules/projects/dto/update-project.dto';
import { v4 as uuidv4 } from 'uuid';

describe('ProjectsController (e2e)', () => {
  let app: INestApplication;
  let accessToken: string;
  let testUser: any;
  let testUserId: string;
  let secondTestUser: any;
  let secondTestUserId: string;
  let testProject: any;
  let testProjectId: string;

  beforeAll(async () => {
    app = await createTestApp();

    // Create test users and generate tokens
    testUser = await createTestUser(app);
    testUserId = testUser.id;
    const tokens = await generateTokensForUser(app, testUserId);
    accessToken = tokens.accessToken;

    // Create a second test user for collaborator tests
    secondTestUser = await createTestUser(app);
    secondTestUserId = secondTestUser.id;
  });

  afterAll(async () => {
    // Clean up test data
    await cleanupTestData(app, testUserId);
    await cleanupTestData(app, secondTestUserId);
    await app.close();
  });

  describe('POST /api/projects', () => {
    it('should create a new project', async () => {
      const createProjectDto: CreateProjectDto = {
        name: `Test Project ${uuidv4().substring(0, 8)}`,
        description: 'A test project for e2e testing',
        ownerId: testUserId,
        settings: { isPublic: true },
      };

      const response = await request(app.getHttpServer())
        .post('/api/projects')
        .set('Authorization', `Bearer ${accessToken}`)
        .send(createProjectDto)
        .expect(201);

      expect(response.body).toHaveProperty('id');
      expect(response.body.name).toBe(createProjectDto.name);
      expect(response.body.description).toBe(createProjectDto.description);
      expect(response.body.ownerId).toBe(createProjectDto.ownerId);
      expect(response.body.settings).toEqual(createProjectDto.settings);

      // Save the project for later tests
      testProject = response.body;
      testProjectId = response.body.id;
    });

    it('should return 400 if required fields are missing', () => {
      const invalidProjectDto = {
        // Missing required name and ownerId
        description: 'An invalid project',
      };

      return request(app.getHttpServer())
        .post('/api/projects')
        .set('Authorization', `Bearer ${accessToken}`)
        .send(invalidProjectDto)
        .expect(400);
    });
  });

  describe('GET /api/projects', () => {
    it('should return all projects', () => {
      return request(app.getHttpServer())
        .get('/api/projects')
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(Array.isArray(res.body)).toBe(true);
          expect(res.body.length).toBeGreaterThan(0);
          expect(res.body.some(project => project.id === testProjectId)).toBe(true);
        });
    });

    it('should filter projects by owner ID', () => {
      return request(app.getHttpServer())
        .get(`/api/projects?ownerId=${testUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(Array.isArray(res.body)).toBe(true);
          expect(res.body.every(project => project.ownerId === testUserId)).toBe(true);
          expect(res.body.some(project => project.id === testProjectId)).toBe(true);
        });
    });
  });

  describe('GET /api/projects/:id', () => {
    it('should return a project by ID', () => {
      return request(app.getHttpServer())
        .get(`/api/projects/${testProjectId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body).toHaveProperty('id', testProjectId);
          expect(res.body.name).toBe(testProject.name);
          expect(res.body.description).toBe(testProject.description);
          expect(res.body.ownerId).toBe(testProject.ownerId);
        });
    });

    it('should return 404 if project not found', () => {
      const nonExistentId = uuidv4();
      return request(app.getHttpServer())
        .get(`/api/projects/${nonExistentId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });
  });

  describe('PATCH /api/projects/:id', () => {
    it('should update a project', () => {
      const updateProjectDto: UpdateProjectDto = {
        name: `Updated Project ${uuidv4().substring(0, 8)}`,
        description: 'An updated test project',
        settings: { isPublic: false },
      };

      return request(app.getHttpServer())
        .patch(`/api/projects/${testProjectId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .send(updateProjectDto)
        .expect(200)
        .expect((res) => {
          expect(res.body).toHaveProperty('id', testProjectId);
          expect(res.body.name).toBe(updateProjectDto.name);
          expect(res.body.description).toBe(updateProjectDto.description);
          expect(res.body.settings).toEqual(updateProjectDto.settings);

          // Update the testProject object with the new values
          testProject = res.body;
        });
    });

    it('should return 404 if project not found', () => {
      const nonExistentId = uuidv4();
      const updateProjectDto: UpdateProjectDto = {
        name: 'Updated Project',
      };

      return request(app.getHttpServer())
        .patch(`/api/projects/${nonExistentId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .send(updateProjectDto)
        .expect(404);
    });
  });

  describe('GET /api/projects/:id/check-access/:userId', () => {
    it('should return true if user is the owner', () => {
      return request(app.getHttpServer())
        .get(`/api/projects/${testProjectId}/check-access/${testUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body).toBe(true);
        });
    });

    it('should return false if user has no access', () => {
      return request(app.getHttpServer())
        .get(`/api/projects/${testProjectId}/check-access/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body).toBe(false);
        });
    });
  });

  describe('POST /api/projects/:id/collaborators/:userId', () => {
    it('should add a collaborator to a project', () => {
      return request(app.getHttpServer())
        .post(`/api/projects/${testProjectId}/collaborators/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(201)
        .expect((res) => {
          expect(res.body).toHaveProperty('projectId', testProjectId);
          expect(res.body).toHaveProperty('userId', secondTestUserId);
        });
    });

    it('should return 404 if project not found', () => {
      const nonExistentId = uuidv4();
      return request(app.getHttpServer())
        .post(`/api/projects/${nonExistentId}/collaborators/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });

    it('should return 404 if user not found', () => {
      const nonExistentId = uuidv4();
      return request(app.getHttpServer())
        .post(`/api/projects/${testProjectId}/collaborators/${nonExistentId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });
  });

  describe('GET /api/projects/:id/collaborators', () => {
    it('should return all collaborators for a project', () => {
      return request(app.getHttpServer())
        .get(`/api/projects/${testProjectId}/collaborators`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(Array.isArray(res.body)).toBe(true);
          expect(res.body.some(collab => collab.user.id === secondTestUserId)).toBe(true);
        });
    });

    it('should return 404 if project not found', () => {
      const nonExistentId = uuidv4();
      return request(app.getHttpServer())
        .get(`/api/projects/${nonExistentId}/collaborators`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });
  });

  describe('GET /api/projects/:id/check-access/:userId', () => {
    it('should return true if user is a collaborator', () => {
      return request(app.getHttpServer())
        .get(`/api/projects/${testProjectId}/check-access/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(200)
        .expect((res) => {
          expect(res.body).toBe(true);
        });
    });
  });

  describe('DELETE /api/projects/:id/collaborators/:userId', () => {
    it('should remove a collaborator from a project', () => {
      return request(app.getHttpServer())
        .delete(`/api/projects/${testProjectId}/collaborators/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(204);
    });

    it('should return 404 if collaboration not found', () => {
      return request(app.getHttpServer())
        .delete(`/api/projects/${testProjectId}/collaborators/${secondTestUserId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });
  });

  // We'll test DELETE last to avoid affecting other tests
  describe('DELETE /api/projects/:id', () => {
    let projectToDeleteId: string;

    beforeAll(async () => {
      // Create a project specifically for the delete test
      const createProjectDto: CreateProjectDto = {
        name: `Project to Delete ${uuidv4().substring(0, 8)}`,
        description: 'A project that will be deleted',
        ownerId: testUserId,
      };

      const response = await request(app.getHttpServer())
        .post('/api/projects')
        .set('Authorization', `Bearer ${accessToken}`)
        .send(createProjectDto)
        .expect(201);

      projectToDeleteId = response.body.id;
    });

    it('should delete a project', () => {
      return request(app.getHttpServer())
        .delete(`/api/projects/${projectToDeleteId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(204);
    });

    it('should return 404 if project not found', () => {
      const nonExistentId = uuidv4();
      return request(app.getHttpServer())
        .delete(`/api/projects/${nonExistentId}`)
        .set('Authorization', `Bearer ${accessToken}`)
        .expect(404);
    });
  });
});