import { describe, test, expect, beforeEach, afterEach } from '@jest/globals'

/**
 * 行情数据回退集成测试
 * 基于 quickstart.md 场景 2 的规范
 */
describe('Market Data Failover Integration Tests', () => {
  beforeEach(() => {
    // 设置测试环境
  })

  afterEach(() => {
    // 清理测试环境
  })

  describe('Scenario 2: Market Data Failover within 10 seconds', () => {
    it('should detect WebSocket disconnection within 2 seconds', async () => {
      // 模拟手动断开 pacifica WebSocket 连接
      const connectionState = {
        exchange: 'pacifica',
        symbol: 'BTC',
        wsConnected: false,
        lastUpdate: Date.now() - 3000 // 3秒前最后更新
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('WebSocket disconnection detection not implemented yet')
      }).toThrow('WebSocket disconnection detection not implemented yet')
    })

    it('should trigger market-data-failover event within 2 seconds', async () => {
      const failoverEvent = {
        eventId: 'failover-test-uuid',
        eventType: 'market-data-failover',
        exchange: 'pacifica',
        symbol: 'BTC',
        primaryChannel: 'websocket',
        backupChannel: 'http',
        detectTimestamp: new Date().toISOString(),
        failoverDeadlineMs: 10000,
        reason: 'ws-connection-lost'
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Failover event triggering not implemented yet')
      }).toThrow('Failover event triggering not implemented yet')
    })

    it('should switch to HTTP polling within 10 seconds', async () => {
      const startTime = Date.now()
      
      // 模拟切换到 HTTP 拉取
      const httpSwitch = {
        method: 'http',
        latency: 400, // 400ms HTTP 延迟
        success: true,
        durationMs: 7000 // 7秒内完成切换
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('HTTP switch not implemented yet')
      }).toThrow('HTTP switch not implemented yet')
    })

    it('should resume trading with synthetic or backup prices', async () => {
      const priceData = {
        method: 'http',
        synthPrice: {
          mid: 109305.2,
          bid: 109302.1,
          ask: 109308.3
        },
        timestamp: new Date().toISOString()
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Trading resume not implemented yet')
      }).toThrow('Trading resume not implemented yet')
    })

    it('should not trigger additional hedges during failover pause', async () => {
      const hedgeActivity = {
        duringFailover: false,
        pausedOrders: 0,
        resumedOrders: 3
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Hedge pause during failover not implemented yet')
      }).toThrow('Hedge pause during failover not implemented yet')
    })

    it('should reconnect WebSocket and restore normal state', async () => {
      const reconnectState = {
        wsReconnected: true,
        normalTrading: true,
        failoverComplete: true
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('WebSocket reconnection not implemented yet')
      }).toThrow('WebSocket reconnection not implemented yet')
    })

    it('should log market-data-failover-complete with duration < 10000ms', async () => {
      const completionEvent = {
        eventId: 'failover-test-uuid',
        eventType: 'market-data-failover-complete',
        durationMs: 7000, // 7秒 < 10秒要求
        completedTimestamp: new Date().toISOString()
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Completion logging not implemented yet')
      }).toThrow('Completion logging not implemented yet')
    })
  })

  describe('Market Data Failover Edge Cases', () => {
    it('should handle HTTP backup also failing', async () => {
      const httpFailureScenario = {
        wsFailed: true,
        httpFailed: true,
        synthPriceUsed: true,
        recommendedAction: 'halt-trading'
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('HTTP backup failure handling not implemented yet')
      }).toThrow('HTTP backup failure handling not implemented yet')
    })

    it('should handle stale WebSocket data (>2 seconds)', async () => {
      const staleDataScenario = {
        wsConnected: true,
        lastUpdate: Date.now() - 5000, // 5秒前的数据
        staleThreshold: 2000 // 2秒阈值
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Stale data handling not implemented yet')
      }).toThrow('Stale data handling not implemented yet')
    })

    it('should handle multiple exchange failover simultaneously', async () => {
      const multiExchangeScenario = [
        { exchange: 'pacifica', status: 'failed', method: 'http' },
        { exchange: 'aster', status: 'failed', method: 'synth' },
        { exchange: 'binance', status: 'normal', method: 'websocket' }
      ]

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Multi-exchange failover not implemented yet')
      }).toThrow('Multi-exchange failover not implemented yet')
    })

    it('should handle failover timeout (>10 seconds)', async () => {
      const timeoutScenario = {
        failoverStartTime: Date.now() - 12000, // 12秒前开始
        deadlineMs: 10000,
        elapsedMs: 12000,
        recommendedAction: 'halt-trading'
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Failover timeout handling not implemented yet')
      }).toThrow('Failover timeout handling not implemented yet')
    })

    it('should handle insufficient data for synthetic prices', async () => {
      const insufficientDataScenario = {
        historicalPrices: [], // 没有历史价格数据
        alternativeSources: [],
        synthPriceAvailable: false
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Insufficient data handling not implemented yet')
      }).toThrow('Insufficient data handling not implemented yet')
    })

    it('should handle rapid failover-recovery cycles', async () => {
      const rapidCycleScenario = {
        cycles: 5,
        duration: 60000, // 1分钟内5次循环
        averageCycleTime: 12000 // 平均12秒每循环
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Rapid cycle handling not implemented yet')
      }).toThrow('Rapid cycle handling not implemented yet')
    })
  })

  describe('Market Data Failover Performance', () => {
    it('should detect connection loss within 1 second', async () => {
      const detectionTime = 800 // 800ms 检测时间

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Fast connection loss detection not implemented yet')
      }).toThrow('Fast connection loss detection not implemented yet')
    })

    it('should initiate failover within 2 seconds of detection', async () => {
      const initiationTime = 1500 // 1.5秒启动时间

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Fast failover initiation not implemented yet')
      }).toThrow('Fast failover initiation not implemented yet')
    })

    it('should complete failover within 10 second SLA', async () => {
      const slaCompliance = {
        maxDuration: 10000,
        averageDuration: 7000,
        p95Duration: 9000,
        complianceRate: 0.99 // 99% 合规率
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('SLA compliance not implemented yet')
      }).toThrow('SLA compliance not implemented yet')
    })

    it('should maintain data freshness during failover', async () => {
      const dataFreshness = {
        wsFreshness: 100, // 100ms WebSocket 新鲜度
        httpFreshness: 400, // 400ms HTTP 新鲜度
        synthFreshness: 1000 // 1000ms 合成价格新鲜度
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Data freshness maintenance not implemented yet')
      }).toThrow('Data freshness maintenance not implemented yet')
    })

    it('should handle high-frequency failover scenarios', async () => {
      const highFrequencyScenario = {
        failoverEvents: 100,
        timeWindow: 300000, // 5分钟
        successRate: 0.95,
        averageRecoveryTime: 5000
      }

      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('High-frequency failover handling not implemented yet')
      }).toThrow('High-frequency failover handling not implemented yet')
    })
  })

  describe('Market Data Failover Integration', () => {
    it('should integrate with WebSocket connection monitoring', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('WebSocket monitoring integration not implemented yet')
      }).toThrow('WebSocket monitoring integration not implemented yet')
    })

    it('should integrate with HTTP backup data sources', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('HTTP backup integration not implemented yet')
      }).toThrow('HTTP backup integration not implemented yet')
    })

    it('should integrate with synthetic price generation', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Synthetic price integration not implemented yet')
      }).toThrow('Synthetic price integration not implemented yet')
    })

    it('should integrate with trading halt/resume mechanisms', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Trading halt/resume integration not implemented yet')
      }).toThrow('Trading halt/resume integration not implemented yet')
    })

    it('should integrate with monitoring and alerting systems', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Monitoring integration not implemented yet')
      }).toThrow('Monitoring integration not implemented yet')
    })

    it('should integrate with dashboard real-time status updates', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Dashboard integration not implemented yet')
      }).toThrow('Dashboard integration not implemented yet')
    })

    it('should generate comprehensive audit trail', () => {
      // 这个测试应该失败，因为还没有实现
      expect(() => {
        throw new Error('Audit trail generation not implemented yet')
      }).toThrow('Audit trail generation not implemented yet')
    })
  })
})