import Logger from '../utils/Logger'

/**
 * 设备信息接口
 */
export interface DeviceInfo {
  id: string
  socketId: string
  name: string
  model: string
  osVersion: string
  appVersion: string
  appPackage?: string
  appName?: string
  screenWidth: number
  screenHeight: number
  capabilities: string[]
  connectedAt: Date
  lastSeen: Date
  status: 'online' | 'offline' | 'busy'
  inputBlocked?: boolean
  isLocked?: boolean // 设备锁屏状态
  remark?: string // 🆕 设备备注
  publicIP?: string
  // 🆕 新增系统版本信息字段
  systemVersionName?: string  // 如"Android 11"、"Android 12"
  romType?: string            // 如"MIUI"、"ColorOS"、"原生Android"
  romVersion?: string         // 如"MIUI 12.5"、"ColorOS 11.1"
  osBuildVersion?: string     // 如"1.0.19.0.UMCCNXM"等完整构建版本号
}

/**
 * 设备状态接口
 */
export interface DeviceStatus {
  cpu: number
  memory: number
  battery: number
  networkSpeed: number
  orientation: 'portrait' | 'landscape'
  screenOn: boolean
}

/**
 * 设备管理器
 */
class DeviceManager {
  private devices: Map<string, DeviceInfo> = new Map()
  private deviceStatuses: Map<string, DeviceStatus> = new Map()
  private socketToDevice: Map<string, string> = new Map()
  private logger: Logger

  constructor() {
    this.logger = new Logger('DeviceManager')
  }

  /**
   * ✅ 清理所有设备记录（服务器重启时调用）
   */
  clearAllDevices(): void {
    const deviceCount = this.devices.size
    this.devices.clear()
    this.deviceStatuses.clear()
    this.socketToDevice.clear()
    this.logger.info(`🧹 已清理所有设备记录: ${deviceCount} 个设备`)
  }

  /**
   * 添加设备
   */
  addDevice(deviceInfo: DeviceInfo): void {
    this.devices.set(deviceInfo.id, deviceInfo)
    this.socketToDevice.set(deviceInfo.socketId, deviceInfo.id)
    this.logger.info(`设备已添加: ${deviceInfo.name} (${deviceInfo.id})`)
  }

  /**
   * 移除设备
   */
  removeDevice(deviceId: string): boolean {
    const device = this.devices.get(deviceId)
    if (device) {
      this.devices.delete(deviceId)
      this.deviceStatuses.delete(deviceId)
      this.socketToDevice.delete(device.socketId)
      this.logger.info(`设备已移除: ${device.name} (${deviceId})`)
      return true
    }
    return false
  }

  /**
   * 通过Socket ID移除设备
   */
  removeDeviceBySocketId(socketId: string): boolean {
    const deviceId = this.socketToDevice.get(socketId)
    if (deviceId) {
      return this.removeDevice(deviceId)
    }
    return false
  }

  /**
   * 获取设备信息
   */
  getDevice(deviceId: string): DeviceInfo | undefined {
    return this.devices.get(deviceId)
  }

  /**
   * 通过Socket ID获取设备
   */
  getDeviceBySocketId(socketId: string): DeviceInfo | undefined {
    const deviceId = this.socketToDevice.get(socketId)
    return deviceId ? this.devices.get(deviceId) : undefined
  }

  /**
   * 获取所有设备
   */
  getAllDevices(): DeviceInfo[] {
    return Array.from(this.devices.values())
  }

  /**
   * 获取在线设备
   */
  getOnlineDevices(): DeviceInfo[] {
    return Array.from(this.devices.values()).filter(device => device.status === 'online')
  }

  /**
   * 获取设备数量
   */
  getDeviceCount(): number {
    return this.devices.size
  }

  /**
   * 更新设备状态
   */
  updateDeviceStatus(socketId: string, status: DeviceStatus): void {
    const deviceId = this.socketToDevice.get(socketId)
    if (deviceId) {
      const device = this.devices.get(deviceId)
      if (device) {
        device.lastSeen = new Date()
        this.deviceStatuses.set(deviceId, status)
        this.logger.debug(`设备状态已更新: ${deviceId}`, status)
      }
    }
  }

  /**
   * 获取设备状态
   */
  getDeviceStatus(deviceId: string): DeviceStatus | undefined {
    return this.deviceStatuses.get(deviceId)
  }

  /**
   * 更新设备连接状态
   */
  updateDeviceConnectionStatus(deviceId: string, status: DeviceInfo['status']): void {
    const device = this.devices.get(deviceId)
    if (device) {
      device.status = status
      device.lastSeen = new Date()
      this.logger.info(`设备连接状态已更新: ${deviceId} -> ${status}`)
    }
  }

  /**
   * 检查设备是否在线
   */
  isDeviceOnline(deviceId: string): boolean {
    const device = this.devices.get(deviceId)
    return device ? device.status === 'online' : false
  }

  /**
   * 获取设备的Socket ID
   */
  getDeviceSocketId(deviceId: string): string | undefined {
    const device = this.devices.get(deviceId)
    return device?.socketId
  }

  /**
   * 清理离线设备 (超过指定时间未活跃)
   */
  cleanupOfflineDevices(timeoutMs: number = 300000): void {
    const now = Date.now()
    const devicesToRemove: string[] = []

    for (const [deviceId, device] of this.devices.entries()) {
      if (now - device.lastSeen.getTime() > timeoutMs) {
        devicesToRemove.push(deviceId)
      }
    }

    devicesToRemove.forEach(deviceId => {
      this.removeDevice(deviceId)
    })

    if (devicesToRemove.length > 0) {
      this.logger.info(`已清理 ${devicesToRemove.length} 个离线设备`)
    }
  }

  /**
   * 获取设备统计信息
   */
  getDeviceStats(): {
    total: number
    online: number
    offline: number
    busy: number
  } {
    const devices = Array.from(this.devices.values())
    return {
      total: devices.length,
      online: devices.filter(d => d.status === 'online').length,
      offline: devices.filter(d => d.status === 'offline').length,
      busy: devices.filter(d => d.status === 'busy').length,
    }
  }
}

export default DeviceManager