/**
 * 用户模型单元测试
 */

const mongoose = require('mongoose')
const User = require('../../src/models/User')

describe('User Model', () => {
  beforeAll(async () => {
    // 连接测试数据库
    const mongoURI = process.env.MONGODB_URI || 'mongodb://localhost:27017/wdkj_test'
    await mongoose.connect(mongoURI)
    // 确保唯一索引已构建（dropDatabase 后 mongoose 不会自动重建）
    await mongoose.connection.syncIndexes()
  })

  afterAll(async () => {
    // 防呆：只允许在测试库中 dropDatabase
    if (mongoose.connection.name === 'wdkj') {
      throw new Error('[安全] 不允许对生产数据库 wdkj 执行 dropDatabase')
    }
    // 清理并关闭连接
    await mongoose.connection.dropDatabase()
    await mongoose.connection.close()
  })

  beforeEach(async () => {
    // 每个测试前清空users集合
    await User.deleteMany({})
  })

  describe('用户创建', () => {
    test('应该成功创建新用户', async () => {
      const userData = {
        openid: 'test_openid_123',
        nickName: '测试用户',
        avatarUrl: 'https://example.com/avatar.jpg'
      }

      const user = new User(userData)
      const savedUser = await user.save()

      expect(savedUser._id).toBeDefined()
      expect(savedUser.openid).toBe(userData.openid)
      expect(savedUser.nickName).toBe(userData.nickName)
      expect(savedUser.avatarUrl).toBe(userData.avatarUrl)
      expect(savedUser.unlockedDims).toContain(1)
      expect(savedUser.totalScore).toBe(0)
    })

    test('username 必须唯一', async () => {
      await new User({ username: 'alice', nickName: '用户A' }).save()

      const duplicateUser = new User({
        username: 'alice',
        nickName: '用户B'
      })

      await expect(duplicateUser.save()).rejects.toThrow()
    })

    test('openid 必须唯一', async () => {
      const userData = {
        openid: 'unique_openid',
        nickName: '用户1'
      }

      await new User(userData).save()

      const duplicateUser = new User({
        openid: 'unique_openid',
        nickName: '用户2'
      })

      await expect(duplicateUser.save()).rejects.toThrow()
    })

    test('默认昵称应该是"星辰旅行者"', async () => {
      const user = new User({ openid: 'test_openid' })
      await user.save()

      expect(user.nickName).toBe('星辰旅行者')
    })
  })

  describe('探索数据', () => {
    test('应该正确计算总分', async () => {
      const user = new User({
        openid: 'test_openid',
        exploreData: {
          dim1: { bestScore: 100 },
          dim2: { bestArea: 200 },
          dim3: { bestScore: 150 }
        }
      })

      await user.save()

      expect(user.totalScore).toBe(450)
      expect(user.dim1Score).toBe(100)
      expect(user.dim2Score).toBe(200)
      expect(user.dim3Score).toBe(150)
    })

    test('未解锁维度分数应为0', async () => {
      const user = new User({
        openid: 'test_openid',
        exploreData: {
          dim1: { bestScore: 100 }
        }
      })

      await user.save()

      expect(user.dim2Score).toBe(0)
      expect(user.dim3Score).toBe(0)
      expect(user.dim4Score).toBe(0)
      expect(user.dim5Score).toBe(0)
    })
  })

  describe('虚拟字段', () => {
    test('isNew 应该对新用户返回 true', async () => {
      const user = new User({ openid: 'test_openid' })
      await user.save()

      expect(user.isNew).toBe(true)
    })

    test('isNew 应该对老用户返回 false', async () => {
      const yesterday = new Date()
      yesterday.setDate(yesterday.getDate() - 2)

      const user = new User({
        openid: 'test_openid',
        createdAt: yesterday
      })
      await user.save()

      expect(user.isNew).toBe(false)
    })
  })

  describe('静态方法', () => {
    test('getLeaderboard 应该返回排行榜', async () => {
      // 创建测试用户（分数由 exploreData 派生，保存时自动计算）
      await User.create([
        { openid: 'user1', exploreData: { dim1: { bestScore: 300 } } },
        { openid: 'user2', exploreData: { dim1: { bestScore: 500 } } },
        { openid: 'user3', exploreData: { dim1: { bestScore: 400 } } }
      ])

      const leaderboard = await User.getLeaderboard(null, 10)

      expect(leaderboard).toHaveLength(3)
      expect(leaderboard[0].totalScore).toBe(500)
      expect(leaderboard[1].totalScore).toBe(400)
      expect(leaderboard[2].totalScore).toBe(300)
    })

    test('getLeaderboard 应该支持按维度排序', async () => {
      await User.create([
        { openid: 'user1', exploreData: { dim1: { bestScore: 100 } } },
        { openid: 'user2', exploreData: { dim1: { bestScore: 200 } } },
        { openid: 'user3', exploreData: { dim1: { bestScore: 150 } } }
      ])

      const leaderboard = await User.getLeaderboard(1, 10)

      expect(leaderboard[0].dim1Score).toBe(200)
      expect(leaderboard[1].dim1Score).toBe(150)
      expect(leaderboard[2].dim1Score).toBe(100)
    })
  })
})