import { Test, TestingModule } from '@nestjs/testing';
import { INestApplication } from '@nestjs/common';
import request from 'supertest';
import { App } from 'supertest/types';
import { AppModule } from '../src/app.module';

describe('AuthGuard (e2e)', () => {
  let app: INestApplication<App>;
  const validApiKey = 'test-e2e-api-key-12345';

  beforeEach(async () => {
    // 设置测试环境变量
    process.env.API_KEY = validApiKey;

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

    app = moduleFixture.createNestApplication();
    await app.init();
  });

  afterEach(async () => {
    await app.close();
    // 清理环境变量
    delete process.env.API_KEY;
  });

  describe('本地IP访问', () => {
    it('应该允许本地IP访问（无需API Key）', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '127.0.0.1')
        .expect(200);
    });

    it('应该允许 IPv6 本地地址访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '::1')
        .expect(200);
    });
  });

  describe('公网IP访问 - 已配置API_KEY', () => {
    it('应该允许提供正确API Key的公网访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '8.8.8.8')
        .set('X-API-Key', validApiKey)
        .expect(200);
    });

    it('应该拒绝未提供API Key的公网访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '8.8.8.8')
        .expect(401)
        .expect((res) => {
          expect(res.body.message).toBe('Invalid or missing API Key');
        });
    });

    it('应该拒绝提供错误API Key的公网访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '8.8.8.8')
        .set('X-API-Key', 'wrong-api-key')
        .expect(401)
        .expect((res) => {
          expect(res.body.message).toBe('Invalid or missing API Key');
        });
    });

    it('应该拒绝提供空字符串API Key的公网访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '8.8.8.8')
        .set('X-API-Key', '')
        .expect(401);
    });
  });

  describe('公网IP访问 - 未配置API_KEY', () => {
    beforeEach(async () => {
      await app.close();
      // 清除 API_KEY
      delete process.env.API_KEY;

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

      app = moduleFixture.createNestApplication();
      await app.init();
    });

    it('应该允许所有公网访问（开发环境）', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '8.8.8.8')
        .expect(200);
    });
  });

  describe('内网IP访问', () => {
    it('应该要求内网IP提供API Key', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '192.168.1.100')
        .expect(401);
    });

    it('应该允许提供正确API Key的内网访问', () => {
      return request(app.getHttpServer())
        .get('/api/keywords')
        .set('X-Forwarded-For', '192.168.1.100')
        .set('X-API-Key', validApiKey)
        .expect(200);
    });
  });

  describe('多个API端点', () => {
    it('应该对所有API端点应用鉴权', () => {
      return request(app.getHttpServer())
        .get('/api/bids')
        .set('X-Forwarded-For', '8.8.8.8')
        .expect(401);
    });

    it('应该允许带正确API Key访问所有端点', () => {
      return request(app.getHttpServer())
        .get('/api/bids')
        .set('X-Forwarded-For', '8.8.8.8')
        .set('X-API-Key', validApiKey)
        .expect((res) => {
          // 可能返回 200 或 404，但不应该是 401
          expect(res.status).not.toBe(401);
        });
    });
  });
});