import { EventEmitter } from 'events'
import { logger } from '../../utils/logger.js'
import { BasisManager, basisManager } from './basisManager.js'
import { PriceConvergenceManager, priceConvergenceManager } from './priceConvergenceManager.js'
import { StopLossManager, stopLossManager } from './stopLossManager.js'
import { ConvergenceAlgorithm, convergenceAlgorithm } from './convergenceAlgorithm.js'
import { SamePlatformHedgingManager } from './SamePlatformHedgingManager.js'
import { PacificaProxyClient } from '../../exchanges/pacifica/PacificaProxyClient.js'

/**
 * 增强型对冲执行器 - 集成基差管理、价格收敛、止盈止损等功能
 */
export class EnhancedHedgingExecutor extends EventEmitter {
  private basisManager: BasisManager
  private convergenceManager: PriceConvergenceManager
  private stopLossManager: StopLossManager
  private convergenceAlgorithm: ConvergenceAlgorithm
  private platformManager: SamePlatformHedgingManager

  private clients: Map<string, PacificaProxyClient> = new Map()
  private config: EnhancedHedgingConfig
  private isActive: boolean = false
  private executionInterval?: NodeJS.Timeout

  private performanceMetrics: PerformanceMetrics = {
    totalTrades: 0,
    successfulTrades: 0,
    failedTrades: 0,
    totalPnl: 0,
    totalFees: 0,
    averageConvergenceTime: 0,
    basisRiskEvents: 0,
    stopLossTriggered: 0,
    takeProfitTriggered: 0,
    maxDrawdown: 0,
    sharpeRatio: 0,
    startTime: Date.now(),
  }

  constructor(config?: Partial<EnhancedHedgingConfig>) {
    super()

    this.config = {
      executionIntervalMs: config?.executionIntervalMs || 5000, // 5秒执行间隔
      enableBasisManagement: config?.enableBasisManagement ?? true,
      enableConvergenceManagement: config?.enableConvergenceManagement ?? true,
      enableStopLossManagement: config?.enableStopLossManagement ?? true,
      enablePerformanceTracking: config?.enablePerformanceTracking ?? true,
      maxDailyTrades: config?.maxDailyTrades || 100,
      maxConcurrentPairs: config?.maxConcurrentPairs || 10,
      emergencyStopThreshold: config?.emergencyStopThreshold || -0.05, // -5% 紧急停止
      riskLimits: {
        maxPositionSize: config?.riskLimits?.maxPositionSize || 1.0,
        maxTotalExposure: config?.riskLimits?.maxTotalExposure || 5.0,
        maxDailyLoss: config?.riskLimits?.maxDailyLoss || 1000,
        maxBasisDeviation: config?.riskLimits?.maxBasisDeviation || 200,
        ...config?.riskLimits,
      },
      notifications: {
        enableSlack: config?.notifications?.enableSlack || false,
        enableEmail: config?.notifications?.enableEmail || false,
        enableWebhook: config?.notifications?.enableWebhook || false,
        ...config?.notifications,
      },
    }

    // 初始化各个管理器
    this.basisManager = config?.basisManager || basisManager
    this.convergenceManager = config?.convergenceManager || priceConvergenceManager
    this.stopLossManager = config?.stopLossManager || stopLossManager
    this.convergenceAlgorithm = config?.convergenceAlgorithm || convergenceAlgorithm
    this.platformManager = new SamePlatformHedgingManager('pacifica', this.config.riskLimits)

    this.setupEventListeners()
  }

  /**
   * 设置事件监听器
   */
  private setupEventListeners(): void {
    // 基差管理事件
    this.basisManager.on('basisAlert', alert => {
      this.handleBasisAlert(alert)
    })

    // 收敛管理事件
    this.convergenceManager.on('convergenceTradeExecuted', event => {
      this.handleConvergenceTradeExecuted(event)
    })

    // 止损管理事件
    this.stopLossManager.on('stopTriggered', event => {
      this.handleStopTriggered(event)
    })

    // 平台管理事件
    this.platformManager.on('rebalanceCompleted', event => {
      this.handleRebalanceCompleted(event)
    })
  }

  /**
   * 添加交易对管理
   */
  async addTradingPair(
    pairId: string,
    account1Config: AccountConfig,
    account2Config: AccountConfig,
    symbol: string,
    options?: PairOptions,
  ): Promise<void> {
    try {
      // 创建交易客户端
      const client1 = new PacificaProxyClient({
        account: account1Config.account,
        privateKey: account1Config.privateKey,
        agentWallet: account1Config.agentWallet,
        agentPrivateKey: account1Config.agentPrivateKey,
      })

      const client2 = new PacificaProxyClient({
        account: account2Config.account,
        privateKey: account2Config.privateKey,
        agentWallet: account2Config.agentWallet,
        agentPrivateKey: account2Config.agentPrivateKey,
      })

      this.clients.set(account1Config.account, client1)
      this.clients.set(account2Config.account, client2)

      // 添加到各个管理器
      if (this.config.enableConvergenceManagement) {
        this.convergenceManager.addAccountPair(pairId, account1Config, account2Config, symbol)
      }

      if (this.config.enableStopLossManagement) {
        this.stopLossManager.registerClient(account1Config.account, client1)
        this.stopLossManager.registerClient(account2Config.account, client2)
      }

      // 添加到平台管理器
      this.platformManager.addAccount(account1Config.account, account1Config)
      this.platformManager.addAccount(account2Config.account, account2Config)
      this.platformManager.createHedgePair(pairId, account1Config.account, account2Config.account, symbol)

      logger.info('添加交易对成功', {
        pairId,
        account1: account1Config.account,
        account2: account2Config.account,
        symbol,
        options,
      })

      this.emit('tradingPairAdded', {
        pairId,
        account1: account1Config.account,
        account2: account2Config.account,
        symbol,
      })
    } catch (error: any) {
      logger.error('添加交易对失败', {
        pairId,
        error: error.message,
      })
      throw error
    }
  }

  /**
   * 开始增强对冲执行
   */
  async startEnhancedHedging(): Promise<void> {
    if (this.isActive) return

    this.isActive = true

    // 启动各个管理器
    if (this.config.enableBasisManagement) {
      this.basisManager.startMonitoring()
    }

    if (this.config.enableConvergenceManagement) {
      this.convergenceManager.startConvergenceMonitoring()
    }

    if (this.config.enableStopLossManagement) {
      this.stopLossManager.startMonitoring()
    }

    // 启动主执行循环
    this.executionInterval = setInterval(() => {
      this.performEnhancedExecution()
    }, this.config.executionIntervalMs)

    logger.info('增强对冲执行已启动', {
      enableBasisManagement: this.config.enableBasisManagement,
      enableConvergenceManagement: this.config.enableConvergenceManagement,
      enableStopLossManagement: this.config.enableStopLossManagement,
      executionInterval: this.config.executionIntervalMs,
    })

    this.emit('enhancedHedgingStarted')
  }

  /**
   * 停止增强对冲执行
   */
  async stopEnhancedHedging(): Promise<void> {
    if (!this.isActive) return

    this.isActive = false

    // 停止各个管理器
    this.basisManager.stopMonitoring()
    this.convergenceManager.stopConvergenceMonitoring()
    this.stopLossManager.stopMonitoring()

    // 停止主执行循环
    if (this.executionInterval) {
      clearInterval(this.executionInterval)
      this.executionInterval = undefined
    }

    logger.info('增强对冲执行已停止')
    this.emit('enhancedHedgingStopped')
  }

  /**
   * 执行增强对冲逻辑
   */
  private async performEnhancedExecution(): Promise<void> {
    try {
      // 检查紧急停止条件
      if (await this.checkEmergencyStop()) {
        await this.triggerEmergencyStop()
        return
      }

      // 更新基差数据
      if (this.config.enableBasisManagement) {
        await this.updateBasisData()
      }

      // 执行收敛检查和调整
      if (this.config.enableConvergenceManagement) {
        await this.performConvergenceExecution()
      }

      // 更新性能指标
      if (this.config.enablePerformanceTracking) {
        await this.updatePerformanceMetrics()
      }
    } catch (error: any) {
      logger.error('增强对冲执行失败', {
        error: error.message,
      })
    }
  }

  /**
   * 检查紧急停止条件
   */
  private async checkEmergencyStop(): Promise<boolean> {
    try {
      const dailyPnl = await this.calculateDailyPnl()
      const totalDrawdown = await this.calculateCurrentDrawdown()

      // 检查日亏损限制
      if (dailyPnl < -this.config.riskLimits.maxDailyLoss) {
        logger.warn('触发日亏损限制', {
          dailyPnl,
          maxDailyLoss: this.config.riskLimits.maxDailyLoss,
        })
        return true
      }

      // 检查回撤限制
      if (totalDrawdown < this.config.emergencyStopThreshold) {
        logger.warn('触发紧急停止阈值', {
          totalDrawdown,
          emergencyStopThreshold: this.config.emergencyStopThreshold,
        })
        return true
      }

      return false
    } catch (error: any) {
      logger.error('检查紧急停止条件失败', {
        error: error.message,
      })
      return false
    }
  }

  /**
   * 触发紧急停止
   */
  private async triggerEmergencyStop(): Promise<void> {
    logger.warn('触发紧急停止，开始平仓所有仓位')

    try {
      // 停止所有自动化执行
      await this.stopEnhancedHedging()

      // 平仓所有仓位
      for (const [account, client] of this.clients) {
        try {
          const positions = await client.getPositions()
          for (const position of positions) {
            if (Math.abs(parseFloat(position.size || '0')) > 0.001) {
              await this.emergencyClosePosition(account, position)
            }
          }
        } catch (error: any) {
          logger.error('紧急平仓失败', {
            account,
            error: error.message,
          })
        }
      }

      this.emit('emergencyStopTriggered', {
        reason: 'risk_limit_exceeded',
        timestamp: Date.now(),
      })

      // 发送通知
      await this.sendEmergencyNotification()
    } catch (error: any) {
      logger.error('紧急停止执行失败', {
        error: error.message,
      })
    }
  }

  /**
   * 紧急平仓
   */
  private async emergencyClosePosition(account: string, position: any): Promise<void> {
    const client = this.clients.get(account)
    if (!client) return

    try {
      const size = Math.abs(parseFloat(position.size || '0'))
      const isLong = parseFloat(position.size || '0') > 0
      const side = isLong ? 'ask' : 'bid'

      const payload = {
        account,
        symbol: position.symbol,
        amount: size.toString(),
        side,
        reduceOnly: true,
        slippagePercent: '2.0', // 紧急情况允许更大滑点
      }

      const result = await client.createMarketOrder(payload)

      logger.info('紧急平仓执行成功', {
        account,
        symbol: position.symbol,
        size,
        side,
        orderId: result.orderId,
      })
    } catch (error: any) {
      logger.error('紧急平仓执行失败', {
        account,
        position: position.symbol,
        error: error.message,
      })
    }
  }

  /**
   * 更新基差数据
   */
  private async updateBasisData(): Promise<void> {
    try {
      // 获取所有交易对的现货和期货价格
      const symbols = this.getMonitoredSymbols()

      for (const symbol of symbols) {
        const marketData = await this.getMarketData(symbol)
        if (marketData) {
          // 假设基差为期货价格 - 现货价格（这里简化处理）
          const spotPrice = marketData.price
          const futuresPrice = marketData.price * (1 + Math.random() * 0.002 - 0.001) // 模拟期货价格

          this.basisManager.updateBasis(symbol, spotPrice, futuresPrice)
        }
      }
    } catch (error: any) {
      logger.error('更新基差数据失败', {
        error: error.message,
      })
    }
  }

  /**
   * 执行收敛逻辑
   */
  private async performConvergenceExecution(): Promise<void> {
    try {
      const pairStatuses = this.convergenceManager.getAllAccountPairStatuses()

      for (const pairStatus of pairStatuses) {
        if (!pairStatus.account1Position || !pairStatus.account2Position) continue

        const marketData = await this.getMarketData(pairStatus.symbol)
        if (!marketData) continue

        // 使用收敛算法计算策略
        const strategy = this.convergenceAlgorithm.calculateConvergenceStrategy(
          this.convertToPositionInfo(pairStatus.account1Position, marketData),
          this.convertToPositionInfo(pairStatus.account2Position, marketData),
          marketData,
        )

        if (strategy.needsAdjustment && strategy.urgency === 'high') {
          await this.executeConvergenceStrategy(pairStatus.pairId, strategy)
        }
      }
    } catch (error: any) {
      logger.error('执行收敛逻辑失败', {
        error: error.message,
      })
    }
  }

  /**
   * 执行收敛策略
   */
  private async executeConvergenceStrategy(pairId: string, strategy: any): Promise<void> {
    try {
      logger.info('执行收敛策略', {
        pairId,
        strategy: strategy.strategy,
        confidence: strategy.confidence,
        reasoning: strategy.reasoning,
      })

      // 这里可以调用具体的交易执行逻辑
      // 暂时使用平台管理器的再平衡功能
      await this.platformManager.rebalanceHedgePair(pairId, 0.01)

      this.performanceMetrics.totalTrades++
      this.emit('convergenceStrategyExecuted', {
        pairId,
        strategy,
        timestamp: Date.now(),
      })
    } catch (error: any) {
      logger.error('执行收敛策略失败', {
        pairId,
        error: error.message,
      })
      this.performanceMetrics.failedTrades++
    }
  }

  /**
   * 处理基差预警
   */
  private async handleBasisAlert(alert: any): Promise<void> {
    logger.warn('基差预警', alert)

    this.performanceMetrics.basisRiskEvents++

    // 发送通知
    await this.sendNotification('basis_alert', {
      symbol: alert.symbol,
      riskLevel: alert.riskLevel,
      message: alert.message,
    })

    this.emit('basisRiskDetected', alert)
  }

  /**
   * 处理收敛交易执行
   */
  private async handleConvergenceTradeExecuted(event: any): Promise<void> {
    logger.info('收敛交易执行', event)

    this.performanceMetrics.successfulTrades++

    // 为新仓位设置止盈止损
    if (this.config.enableStopLossManagement) {
      await this.setStopLossForNewTrades(event)
    }
  }

  /**
   * 处理止损触发
   */
  private async handleStopTriggered(event: any): Promise<void> {
    logger.info('止损触发', event)

    if (event.execution.triggerType === 'stop_loss') {
      this.performanceMetrics.stopLossTriggered++
    } else if (event.execution.triggerType === 'take_profit') {
      this.performanceMetrics.takeProfitTriggered++
    }

    this.emit('stopLossTriggered', event)
  }

  /**
   * 处理再平衡完成
   */
  private async handleRebalanceCompleted(event: any): Promise<void> {
    logger.info('再平衡完成', event)
    this.emit('rebalanceCompleted', event)
  }

  /**
   * 为新交易设置止盈止损
   */
  private async setStopLossForNewTrades(event: any): Promise<void> {
    try {
      for (const result of event.results) {
        if (result.success && result.executedSize > 0) {
          await this.stopLossManager.setStopLossAndTakeProfit(
            result.account,
            event.tradeParams.symbol || 'BTC-USD',
            result.executedSize,
            result.executedPrice,
            result.side === 'bid', // 买入为多头
          )
        }
      }
    } catch (error: any) {
      logger.error('设置止盈止损失败', {
        error: error.message,
      })
    }
  }

  /**
   * 获取市场数据
   */
  private async getMarketData(symbol: string): Promise<any> {
    try {
      // 使用第一个可用的客户端获取市场数据
      const client = this.clients.values().next().value
      if (!client) return null

      const ticker = await client.getTicker(symbol)
      return {
        symbol,
        price: ticker?.price || 0,
        volume: ticker?.volume || 0,
        volatility: 0.02, // 模拟波动率
        trend: 'sideways',
        momentum: 0,
      }
    } catch (error: any) {
      logger.error('获取市场数据失败', {
        symbol,
        error: error.message,
      })
      return null
    }
  }

  /**
   * 转换为算法需要的仓位信息格式
   */
  private convertToPositionInfo(position: any, marketData: any): any {
    return {
      symbol: position.symbol,
      size: position.size,
      averagePrice: position.averagePrice || position.entryPrice,
      currentPrice: marketData.price,
      unrealizedPnl: position.unrealizedPnl,
      minOrderSize: 0.001,
    }
  }

  /**
   * 获取监控的交易对列表
   */
  private getMonitoredSymbols(): string[] {
    const pairStatuses = this.convergenceManager.getAllAccountPairStatuses()
    return pairStatuses.map(status => status.symbol)
  }

  /**
   * 计算日盈亏
   */
  private async calculateDailyPnl(): Promise<number> {
    let totalPnl = 0

    try {
      for (const [account, client] of this.clients) {
        const positions = await client.getPositions()
        for (const position of positions) {
          totalPnl += parseFloat(position.unrealizedPnl || '0')
        }
      }
    } catch (error: any) {
      logger.error('计算日盈亏失败', {
        error: error.message,
      })
    }

    return totalPnl
  }

  /**
   * 计算当前回撤
   */
  private async calculateCurrentDrawdown(): Promise<number> {
    // 简化实现，实际应该基于历史净值计算
    const currentPnl = await this.calculateDailyPnl()
    return Math.min(0, currentPnl / 10000) // 假设初始资金10000
  }

  /**
   * 更新性能指标
   */
  private async updatePerformanceMetrics(): Promise<void> {
    try {
      const currentPnl = await this.calculateDailyPnl()
      this.performanceMetrics.totalPnl = currentPnl

      const drawdown = await this.calculateCurrentDrawdown()
      this.performanceMetrics.maxDrawdown = Math.min(this.performanceMetrics.maxDrawdown, drawdown)

      // 计算成功率
      if (this.performanceMetrics.totalTrades > 0) {
        const successRate = this.performanceMetrics.successfulTrades / this.performanceMetrics.totalTrades
        logger.debug('性能指标更新', {
          totalTrades: this.performanceMetrics.totalTrades,
          successRate: successRate.toFixed(3),
          totalPnl: this.performanceMetrics.totalPnl.toFixed(2),
          maxDrawdown: this.performanceMetrics.maxDrawdown.toFixed(3),
        })
      }
    } catch (error: any) {
      logger.error('更新性能指标失败', {
        error: error.message,
      })
    }
  }

  /**
   * 发送通知
   */
  private async sendNotification(type: string, data: any): Promise<void> {
    try {
      if (this.config.notifications.enableWebhook) {
        // 发送 Webhook 通知
        logger.info('发送通知', { type, data })
      }

      this.emit('notification', { type, data, timestamp: Date.now() })
    } catch (error: any) {
      logger.error('发送通知失败', {
        error: error.message,
      })
    }
  }

  /**
   * 发送紧急通知
   */
  private async sendEmergencyNotification(): Promise<void> {
    await this.sendNotification('emergency_stop', {
      message: '系统触发紧急停止',
      performanceMetrics: this.performanceMetrics,
    })
  }

  /**
   * 获取性能指标
   */
  getPerformanceMetrics(): PerformanceMetrics {
    return { ...this.performanceMetrics }
  }

  /**
   * 获取运行状态
   */
  getStatus(): HedgingExecutorStatus {
    return {
      isActive: this.isActive,
      activePairs: this.convergenceManager.getAllAccountPairStatuses().length,
      activeStopOrders: this.stopLossManager.getActiveStopOrders().length,
      performanceMetrics: this.performanceMetrics,
      config: this.config,
    }
  }
}

// 类型定义
export interface AccountConfig {
  account: string
  privateKey: string
  agentWallet?: string
  agentPrivateKey?: string
}

export interface PairOptions {
  maxPositionSize?: number
  stopLossPercent?: number
  takeProfitPercent?: number
  enableTrailingStop?: boolean
}

export interface EnhancedHedgingConfig {
  executionIntervalMs: number
  enableBasisManagement: boolean
  enableConvergenceManagement: boolean
  enableStopLossManagement: boolean
  enablePerformanceTracking: boolean
  maxDailyTrades: number
  maxConcurrentPairs: number
  emergencyStopThreshold: number
  riskLimits: {
    maxPositionSize: number
    maxTotalExposure: number
    maxDailyLoss: number
    maxBasisDeviation: number
  }
  notifications: {
    enableSlack: boolean
    enableEmail: boolean
    enableWebhook: boolean
  }
  basisManager?: BasisManager
  convergenceManager?: PriceConvergenceManager
  stopLossManager?: StopLossManager
  convergenceAlgorithm?: ConvergenceAlgorithm
}

export interface PerformanceMetrics {
  totalTrades: number
  successfulTrades: number
  failedTrades: number
  totalPnl: number
  totalFees: number
  averageConvergenceTime: number
  basisRiskEvents: number
  stopLossTriggered: number
  takeProfitTriggered: number
  maxDrawdown: number
  sharpeRatio: number
  startTime: number
}

export interface HedgingExecutorStatus {
  isActive: boolean
  activePairs: number
  activeStopOrders: number
  performanceMetrics: PerformanceMetrics
  config: EnhancedHedgingConfig
}

export const enhancedHedgingExecutor = new EnhancedHedgingExecutor()