import { describe, it, expect, beforeAll, afterAll } from '@jest/globals';
import { DataSource } from 'typeorm';
import { AppDataSource } from '@/server/data-source';
import { HomeService } from '@/server/modules/home/home.service';
import { PolicyNews } from '@/server/modules/silver-users/policy-news.entity';
import { Job } from '@/server/modules/silver-jobs/job.entity';
import { SilverKnowledge } from '@/server/modules/silver-users/silver-knowledge.entity';
import { SilverTimeBank } from '@/server/modules/silver-users/silver-time-bank.entity';
import { UserEntity } from '@/server/modules/users/user.entity';
import { SilverUserProfile } from '@/server/modules/silver-users/silver-user-profile.entity';

describe('HomeService', () => {
  let service: HomeService;
  let dataSource: DataSource;

  beforeAll(async () => {
    if (!AppDataSource.isInitialized) {
      await AppDataSource.initialize();
    }
    dataSource = AppDataSource;
    service = new HomeService(dataSource);
  });

  afterAll(async () => {
    if (AppDataSource.isInitialized) {
      await AppDataSource.destroy();
    }
  });

  describe('getHomeData', () => {
    it('should return home data for anonymous users', async () => {
      const result = await service.getHomeData();
      
      expect(result).toHaveProperty('banners');
      expect(result).toHaveProperty('recommendedJobs');
      expect(result).toHaveProperty('hotKnowledge');
      expect(result).toHaveProperty('timeBankActivities');
      expect(result).toHaveProperty('userStats');
      
      expect(Array.isArray(result.banners)).toBe(true);
      expect(Array.isArray(result.recommendedJobs)).toBe(true);
      expect(Array.isArray(result.hotKnowledge)).toBe(true);
      expect(Array.isArray(result.timeBankActivities)).toBe(true);
      expect(typeof result.userStats).toBe('object');
    });

    it('should return user-specific data when userId provided', async () => {
      const mockUserId = 1;
      const result = await service.getHomeData(mockUserId);
      
      // 验证用户统计数据存在
      expect(result.userStats).toHaveProperty('pointBalance');
      expect(result.userStats).toHaveProperty('timeBankHours');
      expect(result.userStats).toHaveProperty('publishedCount');
      expect(result.userStats).toHaveProperty('favoriteCount');
    });

    it('should handle empty results gracefully', async () => {
      const result = await service.getHomeData();
      
      // 确保返回空数组而不是null
      expect(result.banners).toBeInstanceOf(Array);
      expect(result.recommendedJobs).toBeInstanceOf(Array);
      expect(result.hotKnowledge).toBeInstanceOf(Array);
      expect(result.timeBankActivities).toBeInstanceOf(Array);
    });
  });

  describe('search', () => {
    it('should return search results for valid keyword', async () => {
      const keyword = '老师';
      const result = await service.search(keyword, 'all', 5);
      
      expect(result).toHaveProperty('jobs');
      expect(result).toHaveProperty('knowledge');
      expect(result).toHaveProperty('companies');
    });

    it('should limit results based on limit parameter', async () => {
      const keyword = '培训';
      const limit = 3;
      const result = await service.search(keyword, 'jobs', limit);
      
      expect(result.jobs.length).toBeLessThanOrEqual(limit);
    });
  });

  describe('getBanners', () => {
    it('should return banners with default limit', async () => {
      const banners = await service.getBanners();
      expect(banners.length).toBeLessThanOrEqual(5);
    });

    it('should return banners with custom limit', async () => {
      const limit = 3;
      const banners = await service.getBanners(limit);
      expect(banners.length).toBeLessThanOrEqual(limit);
    });
  });

  describe('getRecommendedJobs', () => {
    it('should return jobs for anonymous users', async () => {
      const jobs = await service.getRecommendedJobs(undefined, 5);
      expect(jobs).toBeInstanceOf(Array);
      expect(jobs.length).toBeLessThanOrEqual(5);
    });

    it('should exclude viewed jobs for logged-in users', async () => {
      const userId = 1;
      const jobs = await service.getRecommendedJobs(userId, 5);
      expect(jobs).toBeInstanceOf(Array);
    });
  });

  describe('performance', () => {
    it('should complete data retrieval within 3 seconds', async () => {
      const startTime = Date.now();
      const result = await service.getHomeData();
      const endTime = Date.now();
      
      expect(endTime - startTime).toBeLessThan(3000);
    });

    it('should handle concurrent requests', async () => {
      const promises = Array.from({ length: 10 }, () => service.getHomeData());
      const results = await Promise.all(promises);
      
      expect(results).toHaveLength(10);
      results.forEach(result => {
        expect(result).toHaveProperty('banners');
      });
    });
  });
});