#!/usr/bin/env tsx

/**
 * 生产环境主入口
 * 对冲刷量交易系统 - 多平台多账户 Delta 中性策略
 */

import { fileURLToPath } from 'url'
import { dirname, join } from 'path'
import process from 'process'

// 生产环境日志和健康检查
import { ProductionLogger } from './utils/ProductionLogger.js'
import { HealthChecker, HealthAPI } from './infrastructure/health/index.js'

// 核心系统组件
import { UnifiedAccountManager } from './accounts/UnifiedAccountManager.js'
import { AccountConfigLoader } from './accounts/AccountConfigLoader.js'
import { AdapterFactory } from './exchanges/AdapterFactory.js'

const __filename = fileURLToPath(import.meta.url)
const __dirname = dirname(__filename)

class HedgeTradingSystem {
  private logger: ProductionLogger
  private healthChecker: HealthChecker
  private healthAPI: HealthAPI | null = null
  private accountManager: UnifiedAccountManager | null = null
  private configLoader: AccountConfigLoader | null = null
  private isShuttingDown = false

  constructor() {
    // 初始化生产日志器
    this.logger = ProductionLogger.getInstance({
      level: 'info',
      enableConsole: true,
      enableFile: true,
      logDir: process.env.LOG_DIR || './logs',
      enableAudit: true,
    })

    // 初始化健康检查系统
    this.healthChecker = new HealthChecker()

    if (process.env.ENABLE_HEALTH_API === 'true') {
      this.healthAPI = new HealthAPI(this.healthChecker, {
        port: parseInt(process.env.HEALTH_CHECK_PORT || '3001'),
        host: process.env.HEALTH_CHECK_HOST || 'localhost',
        enableDetailedResponse: true,
      })
    }

    this.setupSignalHandlers()
  }

  /**
   * 启动对冲交易系统
   */
  async start(): Promise<void> {
    try {
      this.logger.info(
        '🚀 启动对冲刷量交易系统',
        {
          nodeEnv: process.env.NODE_ENV,
          processId: process.pid,
          version: process.env.npm_package_version || '1.0.0',
          runtime: 'tsx',
        },
        'STARTUP',
      )

      // 启动健康检查 API
      if (this.healthAPI) {
        await this.healthAPI.start()
        this.logger.info(
          '✅ 健康检查 API 已启动',
          {
            port: this.healthAPI.getServerInfo().port,
          },
          'HEALTH',
        )
      }

      // 初始化账户管理系统
      await this.initializeAccountManager()

      // 加载账户配置 (如果存在配置文件)
      await this.loadAccountConfig()

      // 启动定期健康检查
      await this.healthChecker.performHealthCheck()
      this.logger.info('✅ 系统健康检查已启动', {}, 'HEALTH')

      // 注册系统健康事件监听
      this.setupHealthEventListeners()

      // 系统就绪信号 (用于PM2)
      if (process.send) {
        process.send('ready')
      }

      this.logger.info(
        '🎯 对冲交易系统启动完成',
        {
          features: ['多平台多账户管理', '全局Delta中性策略', '实时仓位监控', '自动对冲执行', '配置文件热更新'],
        },
        'STARTUP',
      )
    } catch (error: any) {
      this.logger.critical('❌ 系统启动失败', error, {}, 'STARTUP')
      process.exit(1)
    }
  }

  /**
   * 初始化账户管理系统
   */
  private async initializeAccountManager(): Promise<void> {
    this.logger.info('🏦 初始化多平台账户管理系统...', {}, 'ACCOUNT')

    try {
      // 创建统一账户管理器
      this.accountManager = new UnifiedAccountManager()

      // 注册账户管理器到健康检查
      this.healthChecker.registerAccountManager('unified', this.accountManager)

      // 启动账户状态监控
      this.setupAccountMonitoring()

      this.logger.info('✅ 账户管理系统初始化完成', {}, 'ACCOUNT')
    } catch (error: any) {
      this.logger.error('❌ 账户管理系统初始化失败', error, {}, 'ACCOUNT')
      throw error
    }
  }

  /**
   * 加载账户配置
   */
  private async loadAccountConfig(): Promise<void> {
    const configFile = process.env.ACCOUNTS_CONFIG_FILE || './accounts.config.json'

    try {
      this.configLoader = new AccountConfigLoader(configFile)

      if (!this.configLoader.exists()) {
        this.logger.warn(
          '⚠️ 账户配置文件不存在，将使用环境变量注册',
          {
            configFile,
          },
          'CONFIG',
        )

        // 尝试从环境变量注册默认支持的交易所
        await this.registerFromEnvironment()
        return
      }

      // 加载配置文件
      const config = this.configLoader.load()
      this.logger.info(
        '📁 账户配置文件加载成功',
        {
          totalAccounts: config.accounts.length,
          enabledAccounts: config.accounts.filter(a => a.enabled).length,
          hedgingGroups: config.hedgingGroups?.length || 0,
          tradingRules: config.tradingRules?.length || 0,
        },
        'CONFIG',
      )

      // 批量注册账户
      const enabledAccounts = this.configLoader.getEnabledAccounts()
      if (enabledAccounts.length > 0) {
        const accountConfigs = this.configLoader.convertToAccountConfigs(enabledAccounts)
        await this.accountManager!.registerAccountsFromConfig(accountConfigs)
      }

      // 启用配置文件热更新监听
      if (process.env.ENABLE_CONFIG_WATCHING === 'true') {
        this.setupConfigWatching()
      }
    } catch (error: any) {
      this.logger.error(
        '❌ 账户配置加载失败',
        error,
        {
          configFile,
        },
        'CONFIG',
      )

      // 配置文件加载失败时，尝试环境变量方式
      this.logger.info('🔄 尝试使用环境变量方式注册账户...', {}, 'CONFIG')
      await this.registerFromEnvironment()
    }
  }

  /**
   * 从环境变量注册默认账户
   */
  private async registerFromEnvironment(): Promise<void> {
    const exchanges = ['pacifica', 'aster']

    for (const exchange of exchanges) {
      try {
        const result = await AdapterFactory.createFromEnv(exchange as any)
        const adapter = result.adapter

        // 注册到健康检查系统
        this.healthChecker.registerExchange(exchange, adapter as any)

        this.logger.info(
          `✅ ${exchange.toUpperCase()} 交易所适配器已注册`,
          {
            exchange,
            source: 'environment',
          },
          'EXCHANGE',
        )
      } catch (error: any) {
        this.logger.warn(
          `⚠️ ${exchange.toUpperCase()} 交易所初始化失败`,
          {
            exchange,
            error: error.message,
            source: 'environment',
          },
          'EXCHANGE',
        )
      }
    }
  }

  /**
   * 设置配置文件监听
   */
  private setupConfigWatching(): void {
    if (!this.configLoader) return

    this.configLoader.on('config_changed', async (newConfig, oldConfig) => {
      this.logger.info(
        '📄 检测到配置文件更新',
        {
          newAccounts: newConfig.accounts.length,
          oldAccounts: oldConfig?.accounts.length || 0,
        },
        'CONFIG',
      )

      try {
        // 重新加载账户配置 (简化实现)
        const enabledAccounts = this.configLoader!.getEnabledAccounts()
        const accountConfigs = this.configLoader!.convertToAccountConfigs(enabledAccounts)

        this.logger.info(
          '🔄 应用新的账户配置...',
          {
            accounts: accountConfigs.length,
          },
          'CONFIG',
        )

        // 实际环境中这里会做更复杂的差异对比和增量更新
      } catch (error: any) {
        this.logger.error('❌ 配置文件热更新失败', error, {}, 'CONFIG')
      }
    })

    this.configLoader.on('config_error', error => {
      this.logger.error('❌ 配置文件监听错误', error, {}, 'CONFIG')
    })

    this.configLoader.startWatching()
    this.logger.info('👁️ 配置文件热更新监听已启用', {}, 'CONFIG')
  }

  /**
   * 设置账户监控
   */
  private setupAccountMonitoring(): void {
    if (!this.accountManager) return

    // 监听账户事件
    this.accountManager.on('account_registered', data => {
      this.logger.account('账户注册成功', {
        exchange: data.exchange,
        accountId: data.accountId,
      })
    })

    this.accountManager.on('balance_update', data => {
      this.logger.account('余额更新', {
        exchange: data.exchange,
        accountId: data.accountId,
        balances: data.balances,
      })
    })

    this.accountManager.on('position_update', data => {
      this.logger.account('仓位更新', {
        exchange: data.exchange,
        accountId: data.accountId,
        positions: data.positions,
      })

      // 计算全局 Delta (简化版本)
      this.calculateAndLogGlobalDelta(data)
    })
  }

  /**
   * 计算并记录全局 Delta
   */
  private calculateAndLogGlobalDelta(data: any): void {
    try {
      // 这里应该实现真正的 Delta 计算逻辑
      // 暂时使用简化版本
      const totalValue =
        data.positions?.reduce((sum: number, pos: any) => {
          return sum + parseFloat(pos.notional || '0')
        }, 0) || 0

      this.logger.performance('GlobalDelta', Math.abs(totalValue), {
        exchange: data.exchange,
        accountId: data.accountId,
        positionCount: data.positions?.length || 0,
        category: 'delta_neutral',
      })

      // 如果 Delta 超过阈值，记录警告
      const deltaThreshold = parseFloat(process.env.DELTA_THRESHOLD || '100')
      if (Math.abs(totalValue) > deltaThreshold) {
        this.logger.warn(
          '⚠️ 全局Delta超出阈值',
          {
            currentDelta: totalValue,
            threshold: deltaThreshold,
            exchange: data.exchange,
          },
          'RISK',
        )
      }
    } catch (error: any) {
      this.logger.error('Delta计算失败', error, {}, 'CALCULATION')
    }
  }

  /**
   * 设置健康检查事件监听
   */
  private setupHealthEventListeners(): void {
    this.healthChecker.on('system_unhealthy', health => {
      this.logger.critical(
        '🚨 系统不健康',
        {
          status: health.status,
          exchanges: Object.keys(health.exchanges),
          accounts: Object.keys(health.accounts),
          errors: health.errors.total,
        },
        'HEALTH',
      )
    })

    this.healthChecker.on('exchange_disconnected', data => {
      this.logger.error(
        '🔌 交易所连接断开',
        {
          exchange: data.exchange,
        },
        'EXCHANGE',
      )
    })

    this.healthChecker.on('exchange_connected', data => {
      this.logger.info(
        '✅ 交易所重新连接',
        {
          exchange: data.exchange,
        },
        'EXCHANGE',
      )
    })
  }

  /**
   * 设置信号处理器 - 优雅关闭
   */
  private setupSignalHandlers(): void {
    const signals = ['SIGTERM', 'SIGINT', 'SIGUSR2'] // SIGUSR2 是 PM2 重启信号

    signals.forEach(signal => {
      process.on(signal, async () => {
        if (this.isShuttingDown) return

        this.logger.info(`📡 接收到 ${signal} 信号，开始优雅关闭...`, {}, 'SHUTDOWN')
        await this.gracefulShutdown()
      })
    })

    // 处理未捕获的错误
    process.on('uncaughtException', error => {
      this.logger.critical('💥 未捕获异常', error, {}, 'ERROR')
      this.gracefulShutdown().then(() => process.exit(1))
    })

    process.on('unhandledRejection', (reason, promise) => {
      this.logger.critical(
        '💥 未处理的Promise拒绝',
        reason as Error,
        {
          promise: promise.toString(),
        },
        'ERROR',
      )
    })
  }

  /**
   * 优雅关闭系统
   */
  private async gracefulShutdown(): Promise<void> {
    if (this.isShuttingDown) return
    this.isShuttingDown = true

    try {
      this.logger.info('🛑 开始系统优雅关闭...', {}, 'SHUTDOWN')

      // 停止配置文件监听
      if (this.configLoader) {
        this.configLoader.stopWatching()
        this.logger.info('✅ 配置文件监听已停止', {}, 'SHUTDOWN')
      }

      // 关闭健康检查 API
      if (this.healthAPI) {
        await this.healthAPI.stop()
        this.logger.info('✅ 健康检查API已关闭', {}, 'SHUTDOWN')
      }

      // 关闭账户管理器连接
      if (this.accountManager) {
        // 这里应该添加账户管理器的清理逻辑
        this.logger.info('✅ 账户管理器已清理', {}, 'SHUTDOWN')
      }

      // 关闭日志系统
      this.logger.info('✅ 对冲交易系统优雅关闭完成', {}, 'SHUTDOWN')
      this.logger.close()

      process.exit(0)
    } catch (error: any) {
      console.error('关闭过程中发生错误:', error)
      process.exit(1)
    }
  }
}

// 启动系统
if (import.meta.url === `file://${process.argv[1]}`) {
  const system = new HedgeTradingSystem()
  system.start().catch(console.error)
}