import { FutureConnector } from '../../src/exchanges/binance/FutureConnector'
import { TestHelpers } from '../utils/testHelpers'

const describeBinancePerf = process.env.TEST_BINANCE === '1' ? describe : describe.skip

// Mock Binance API client
jest.mock('@binance/derivatives-trading-usds-futures', () => ({
  DERIVATIVES_TRADING_USDS_FUTURES_REST_API_PROD_URL: 'https://fapi.binance.com',
  DerivativesTradingUsdsFutures: jest.fn(),
  DerivativesTradingUsdsFuturesRestAPI: {
    NewOrderSideEnum: {
      BUY: 'BUY',
      SELL: 'SELL',
    },
    NewOrderPositionSideEnum: {
      LONG: 'LONG',
      SHORT: 'SHORT',
      BOTH: 'BOTH',
    },
    NewOrderTimeInForceEnum: {
      GTC: 'GTC',
      IOC: 'IOC',
      FOK: 'FOK',
      GTX: 'GTX',
      GTD: 'GTD',
    },
    NewOrderNewOrderRespTypeEnum: {
      ACK: 'ACK',
      RESULT: 'RESULT',
      FULL: 'FULL',
    },
    ChangeMarginTypeMarginTypeEnum: {
      ISOLATED: 'ISOLATED',
      CROSSED: 'CROSSED',
    },
    ModifyOrderSideEnum: {
      BUY: 'BUY',
      SELL: 'SELL',
    },
  },
}))

// 性能测试
describeBinancePerf('FutureConnector Performance Tests', () => {
  let connector: FutureConnector
  let mockClient: any

  beforeEach(() => {
    // 创建模拟的 API 客户端
    mockClient = {
      restAPI: {
        accountInformationV3: jest.fn(),
        newOrder: jest.fn(),
        currentAllOpenOrders: jest.fn(),
        allOrders: jest.fn(),
        accountTradeList: jest.fn(),
      },
    }

    // Mock 构造函数
    const { DerivativesTradingUsdsFutures } = require('@binance/derivatives-trading-usds-futures')
    DerivativesTradingUsdsFutures.mockImplementation(() => mockClient)

    connector = new FutureConnector('test-api-key', 'test-api-secret')
  })

  afterEach(() => {
    jest.clearAllMocks()
  })

  describe('API Response Time', () => {
    test('should handle fast API responses', async () => {
      const startTime = Date.now()

      mockClient.restAPI.accountInformationV3.mockResolvedValue({
        data: jest.fn().mockResolvedValue({
          assets: TestHelpers.createMockAssets(),
          positions: TestHelpers.createMockPositions(),
        }),
      })

      const result = await connector.getAssetsInfo()
      const endTime = Date.now()
      const responseTime = endTime - startTime

      expect(result).toBeDefined()
      expect(responseTime).toBeLessThan(1000) // 应该在1秒内完成
    })

    test('should handle slow API responses gracefully', async () => {
      const startTime = Date.now()

      // 模拟慢速 API 响应
      mockClient.restAPI.accountInformationV3.mockImplementation(() => {
        return new Promise(resolve => {
          setTimeout(() => {
            resolve({
              data: jest.fn().mockResolvedValue({
                assets: TestHelpers.createMockAssets(),
                positions: TestHelpers.createMockPositions(),
              }),
            })
          }, 2000) // 2秒延迟
        })
      })

      const result = await connector.getAssetsInfo()
      const endTime = Date.now()
      const responseTime = endTime - startTime

      expect(result).toBeDefined()
      expect(responseTime).toBeGreaterThanOrEqual(2000)
    })
  })

  describe('Concurrent API Calls', () => {
    test('should handle multiple concurrent getAssetsInfo calls', async () => {
      const mockData = {
        assets: TestHelpers.createMockAssets(),
        positions: TestHelpers.createMockPositions(),
      }

      mockClient.restAPI.accountInformationV3.mockResolvedValue({
        data: jest.fn().mockResolvedValue(mockData),
      })

      const startTime = Date.now()

      // 并发调用 10 次
      const promises = Array.from({ length: 10 }, () => connector.getAssetsInfo())
      const results = await Promise.all(promises)

      const endTime = Date.now()
      const totalTime = endTime - startTime

      expect(results).toHaveLength(10)
      results.forEach(result => {
        expect(result).toEqual(mockData.assets.filter(asset => Number(asset.walletBalance) > 0))
      })

      // 验证 API 被调用了 10 次
      expect(mockClient.restAPI.accountInformationV3).toHaveBeenCalledTimes(10)

      console.log(`并发调用 10 次 getAssetsInfo 总耗时: ${totalTime}ms`)
    })

    test('should handle concurrent order operations', async () => {
      const mockOrderResult = TestHelpers.createMockOrderResult(12345, 'NEW')

      mockClient.restAPI.newOrder.mockResolvedValue({
        data: jest.fn().mockResolvedValue(mockOrderResult),
      })

      const startTime = Date.now()

      // 并发创建 5 个订单
      const promises = Array.from({ length: 5 }, (_, index) =>
        connector.openLimitOrder(
          'BTCUSDT',
          'long',
          0.001,
          50000 + index, // 不同的价格
          'GTC',
        ),
      )

      const results = await Promise.all(promises)
      const endTime = Date.now()
      const totalTime = endTime - startTime

      expect(results).toHaveLength(5)
      results.forEach(result => {
        expect(result).toEqual(mockOrderResult)
      })

      expect(mockClient.restAPI.newOrder).toHaveBeenCalledTimes(5)

      console.log(`并发创建 5 个订单总耗时: ${totalTime}ms`)
    })
  })

  describe('Memory Usage', () => {
    test('should not leak memory with repeated API calls', async () => {
      const initialMemory = process.memoryUsage()

      mockClient.restAPI.accountInformationV3.mockResolvedValue({
        data: jest.fn().mockResolvedValue({
          assets: TestHelpers.createMockAssets(),
          positions: TestHelpers.createMockPositions(),
        }),
      })

      // 执行 100 次 API 调用
      for (let i = 0; i < 100; i++) {
        await connector.getAssetsInfo()
      }

      const finalMemory = process.memoryUsage()
      const memoryIncrease = finalMemory.heapUsed - initialMemory.heapUsed

      // 内存增长应该在合理范围内（小于 10MB）
      expect(memoryIncrease).toBeLessThan(10 * 1024 * 1024)

      console.log(`100 次 API 调用内存增长: ${(memoryIncrease / 1024 / 1024).toFixed(2)}MB`)
    })
  })

  describe('Error Recovery', () => {
    test('should handle API errors without performance degradation', async () => {
      let callCount = 0

      mockClient.restAPI.accountInformationV3.mockImplementation(() => {
        callCount++
        if (callCount <= 3) {
          // 前 3 次调用失败
          return Promise.reject(new Error('API Error'))
        } else {
          // 后续调用成功
          return Promise.resolve({
            data: jest.fn().mockResolvedValue({
              assets: TestHelpers.createMockAssets(),
              positions: TestHelpers.createMockPositions(),
            }),
          })
        }
      })

      const startTime = Date.now()

      // 重试机制应该能够处理错误
      const result = await TestHelpers.retry(
        () => connector.getAssetsInfo(),
        5, // 最多重试 5 次
        100, // 每次重试间隔 100ms
      )

      const endTime = Date.now()
      const totalTime = endTime - startTime

      expect(result).toBeDefined()
      expect(callCount).toBeGreaterThan(3)

      console.log(`错误恢复测试总耗时: ${totalTime}ms, API 调用次数: ${callCount}`)
    })
  })

  describe('Large Data Handling', () => {
    test('should handle large position data efficiently', async () => {
      // 创建大量持仓数据
      const largePositions = Array.from({ length: 1000 }, (_, index) => ({
        symbol: `SYMBOL${index}USDT`,
        positionAmt: (Math.random() * 100).toString(),
        unrealizedPnl: (Math.random() * 1000 - 500).toString(),
        entryPrice: (Math.random() * 100000).toString(),
        leverage: '10',
        isolated: false,
        initialMargin: '0.1',
        maintMargin: '0.1',
        positionInitialMargin: '0.1',
        openOrderInitialMargin: '0.0',
        maxNotional: '1000000',
        bidNotional: '0',
        askNotional: '0',
        positionSide: 'BOTH',
        updateTime: Date.now(),
      }))

      mockClient.restAPI.accountInformationV3.mockResolvedValue({
        data: jest.fn().mockResolvedValue({
          assets: TestHelpers.createMockAssets(),
          positions: largePositions,
        }),
      })

      const startTime = Date.now()
      const result = await connector.getPositonInfo()
      const endTime = Date.now()
      const processingTime = endTime - startTime

      expect(result).toBeDefined()
      expect(Array.isArray(result)).toBe(true)

      // 处理 1000 条数据应该在合理时间内完成
      expect(processingTime).toBeLessThan(5000) // 5秒内

      console.log(`处理 1000 条持仓数据耗时: ${processingTime}ms`)
    })

    test('should handle large order history efficiently', async () => {
      // 创建大量订单数据
      const largeOrders = Array.from({ length: 500 }, (_, index) => ({
        orderId: 10000 + index,
        symbol: 'BTCUSDT',
        status: index % 2 === 0 ? 'FILLED' : 'CANCELED',
        clientOrderId: `test_order_${index}`,
        price: (50000 + Math.random() * 1000).toString(),
        avgPrice: (50000 + Math.random() * 1000).toString(),
        origQty: (0.001 + Math.random() * 0.01).toString(),
        executedQty: (0.001 + Math.random() * 0.01).toString(),
        cumQuote: (50 + Math.random() * 100).toString(),
        timeInForce: 'GTC',
        type: index % 3 === 0 ? 'LIMIT' : 'MARKET',
        reduceOnly: false,
        closePosition: false,
        side: index % 2 === 0 ? 'BUY' : 'SELL',
        positionSide: 'LONG',
        stopPrice: '0',
        workingType: 'CONTRACT_PRICE',
        priceProtect: false,
        origType: index % 3 === 0 ? 'LIMIT' : 'MARKET',
        time: Date.now() - Math.random() * 86400000, // 过去24小时内
        updateTime: Date.now() - Math.random() * 86400000,
      }))

      mockClient.restAPI.allOrders.mockResolvedValue({
        data: jest.fn().mockResolvedValue(largeOrders),
      })

      const startTime = Date.now()
      const result = await connector.getOrderHistory('BTCUSDT')
      const endTime = Date.now()
      const processingTime = endTime - startTime

      expect(result).toBeDefined()
      expect(Array.isArray(result)).toBe(true)
      expect(result).toHaveLength(500)

      // 处理 500 条订单数据应该在合理时间内完成
      expect(processingTime).toBeLessThan(3000) // 3秒内

      console.log(`处理 500 条订单历史耗时: ${processingTime}ms`)
    })
  })

  describe('Rate Limiting Simulation', () => {
    test('should handle rate limiting gracefully', async () => {
      let callCount = 0
      const rateLimitDelay = 100 // 模拟 100ms 的速率限制

      mockClient.restAPI.accountInformationV3.mockImplementation(() => {
        callCount++
        return new Promise(resolve => {
          setTimeout(() => {
            resolve({
              data: jest.fn().mockResolvedValue({
                assets: TestHelpers.createMockAssets(),
                positions: TestHelpers.createMockPositions(),
              }),
            })
          }, rateLimitDelay)
        })
      })

      const startTime = Date.now()

      // 连续调用 10 次
      const promises = Array.from({ length: 10 }, () => connector.getAssetsInfo())
      const results = await Promise.all(promises)

      const endTime = Date.now()
      const totalTime = endTime - startTime

      expect(results).toHaveLength(10)

      // 由于速率限制，总时间应该接近 10 * 100ms = 1000ms
      expect(totalTime).toBeGreaterThanOrEqual(rateLimitDelay * 10 * 0.8) // 允许 20% 的误差

      console.log(`速率限制测试总耗时: ${totalTime}ms, 预期: ${rateLimitDelay * 10}ms`)
    })
  })
})