import { INestApplication } from '@nestjs/common';
import { Test } from '@nestjs/testing';
import * as request from 'supertest';
import { validate as validateUuid, version as uuidVersion } from 'uuid';
import { AppModule } from '../src/app.module';
import { bootstrapApp } from '../src/bootstrap';
import { loginAdmin } from './test-helpers';

describe('API standard', () => {
  let app: INestApplication;
  let adminToken: string;

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

    app = moduleRef.createNestApplication();
    bootstrapApp(app);
    await app.init();
    adminToken = await loginAdmin(app);
  });

  afterAll(async () => {
    await app.close();
  });

  it('wraps successful responses with code, data, message, timestamp, requestId and cost', async () => {
    const response = await request(app.getHttpServer())
      .get('/api/app/v1/health')
      .expect(200);

    expect(response.body).toEqual({
      code: 0,
      data: { status: 'ok' },
      message: 'success',
      timestamp: expect.any(Number),
      requestId: expect.any(String),
      cost: expect.stringMatching(/^\d+ms$/),
    });
    expect(validateUuid(response.body.requestId)).toBe(true);
    expect(uuidVersion(response.body.requestId)).toBe(4);
  });

  it('reuses a valid X-Request-Id header', async () => {
    const requestId = '0f5c2e16-1e44-4d55-93a4-ef7c66d9d1f2';

    const response = await request(app.getHttpServer())
      .get('/api/app/v1/health')
      .set('X-Request-Id', requestId)
      .expect(200);

    expect(response.body.requestId).toBe(requestId);
  });

  it('wraps errors in the standard response shape', async () => {
    const response = await request(app.getHttpServer())
      .get('/api/app/v1/missing')
      .expect(404);

    expect(response.body).toEqual({
      code: 404,
      data: {},
      message: expect.any(String),
      timestamp: expect.any(Number),
      requestId: expect.any(String),
      cost: expect.stringMatching(/^\d+ms$/),
    });
  });

  it('returns paginated lists using data.list and data.pagination', async () => {
    const response = await request(app.getHttpServer())
      .get('/api/admin/v1/logs/requests')
      .set('Authorization', `Bearer ${adminToken}`)
      .expect(200);

    expect(response.body.code).toBe(0);
    expect(response.body.data).toEqual({
      list: expect.any(Array),
      pagination: {
        page: 1,
        pageSize: 20,
        total: expect.any(Number),
      },
    });
  });

  it('can query a request log by requestId', async () => {
    const requestId = '180facd4-68f9-48c9-b6b1-3d8eab56a681';

    await request(app.getHttpServer())
      .get('/api/app/v1/health')
      .set('X-Request-Id', requestId)
      .expect(200);

    const response = await request(app.getHttpServer())
      .get(`/api/admin/v1/logs/requests/${requestId}`)
      .set('Authorization', `Bearer ${adminToken}`)
      .expect(200);

    expect(response.body.data).toMatchObject({
      requestId,
      method: 'GET',
      path: '/api/app/v1/health',
      statusCode: 200,
      responseCode: 0,
      message: 'success',
    });
    expect(response.body.data.costMs).toEqual(expect.any(Number));
  });
});