import type Viewport from '@/core/engine/Viewport.ts'
import { worldModel } from '@/core/manager/WorldModel.ts'
import mqtt, { type IConnackPacket, type IPublishPacket } from 'mqtt'
import type { ErrorWithReasonCode } from 'mqtt/src/lib/shared.ts'
import { Request } from '@ease-forge/shared'
import AmrMessageManager from '@/core/manager/amr/AmrMessageManager'
import { AmrMsg } from '@/core/manager/amr/AmrMessageDefine'
import { getAgvItemNameById } from '@/core/ModelUtils.ts'

export default class EnvManager {
  private amrMessageManager: AmrMessageManager = new AmrMessageManager()
  public client: mqtt.MqttClient = null
  readonly stopSubscribe: StopSubscribe[] = []
  public env: EnvInfo = null

  onMqttConnect = (packet: IConnackPacket) => {
    console.log('Connected')
  }

  onMqttMessage = (topic: string, payload: Buffer, packet: IPublishPacket) => {
    // console.log(`[${topic}]-> ${payload.toString()}`)
    if (topic.startsWith('/wcs_server/')) {
      const message: AmrMsg<any> = JSON.parse(payload.toString())
      this.amrMessageManager.handleMessage(topic, message)
    } else if (topic.startsWith('/agv_robot/status')) {
      const message: AmrMsg<any> = JSON.parse(payload.toString())
      this.amrMessageManager.handleStatusMessage(topic, message)
    }
  }

  onMqttError = (error: Error | ErrorWithReasonCode) => {
    console.error('EnvManager (' + this.env.envConfig.mqtt.websocket + ') error:', error)
  }

  async connectEnv() {
    if (!worldModel.state.isOpened) {
      system.showErrorDialog('WorldModel is not opened, cannot start EnvManager.')
      return
    }
    if (!worldModel.state.runState.currentEnvId) {
      system.showErrorDialog('Current environment ID is not set, cannot start EnvManager.')
      return
    }
    if (worldModel.state.runState.isRunning) {
      system.showErrorDialog('EnvManager is already running, cannot start again.')
      return
    }
    if (!worldModel.state.runState.currentEnv) {
      system.showErrorDialog('Environment is not specified, cannot start EnvManager.')
      return
    }
    if (!worldModel.state.runState.currentEnv.envConfig.mqtt.websocket) {
      system.showErrorDialog('MQTT websocket URL is not set in the envConfig.mqtt.')
      return
    }

    await this.disconnectEnv()

    system.showLoading()
    worldModel.state.runState.isLoading = true
    const env = _.cloneDeep(worldModel.state.runState.currentEnv)
    this.env = env
    try {
      worldModel.backendMessageReceiver.setProjectEnv(worldModel.state.project_uuid, worldModel.state.runState.currentEnvId)

      this.client = mqtt.connect(env.envConfig.mqtt.websocket, {
        path: '/mqtt',
        clientId: system.createUUID(),
        clean: true,
        connectTimeout: 300,
        username: env.envConfig.mqtt.username,
        password: env.envConfig.mqtt.password,
        unixSocket: true,
        keepalive: 60
      })

      await this.loadExecutorToModel()
      this.stopSubscribe.push(
        worldModel.backendMessageReceiver.subscribe('InvUpdate', this.onInvUpdateMessage.bind(this))
      )
      this.stopSubscribe.push(
        worldModel.backendMessageReceiver.subscribe('ServerState', this.onServerUpdateMessage.bind(this))
      )
      this.stopSubscribe.push(
        worldModel.backendMessageReceiver.subscribe('DeviceStatus', this.onDeviceStatusMessage.bind(this))
      )
      await this.loadInvToModel()

      this.client.on('connect', this.onMqttConnect)
      this.client.on('message', this.onMqttMessage)
      this.client.on('error', this.onMqttError)
      worldModel.state.runState.isRunning = true

    } finally {
      system.clearLoading()
      worldModel.state.runState.isLoading = false
    }
  }

  /**
   * 处理设备状态消息
   */
  onDeviceStatusMessage(type, topic, data: AgvStatusVo) {
    const object3D = Model.find3D(getAgvItemNameById(data.id))
    if (object3D) {
      object3D.agvStatusVo = data
    }
  }

  /**
   * 监听在服务器停机之后，客户端连接也必须停机
   */
  onServerUpdateMessage(type: BackendTopicType, topic: string, data: ServerStatusVo) {
    if (worldModel.state.runState.isRunning && worldModel.state.runState.currentEnvId === data.envId) {
      // 处理服务器状态更新
      if (!data.isRunning) {
        // 如果服务器停止了，则断开连接
        console.log(`Server stopped: ${data.envId}`)
        system.msg(`Server is stopped, client disconnect!`, 'warning')
        this.disconnectEnv().finally()
      }
    }
  }

  async onInvUpdateMessage(type: BackendTopicType, topic: string, body: InvUpdateVo) {
    console.log(`InvUpdate: ${type} ${topic}`, body)

    if (!window['Model']) {
      // 如果没有3D模型加载，则不处理库存更新
      return
    }

    Model.deleteInv(body.lpn)

    if (body.after != null) {
      // 将托盘挪到目标位置
      const after = body.after
      Model.createInv('pallet', body.lpn, after.rack, after.bay, after.level, after.cell, after.locCode)
    }
  }

  // 加载库存到3D视图上
  async loadInvToModel() {
    if (!window['Model']) {
      return
    }

    const invRes = await LCC.queryInv({})
    if (!invRes.success) {
      return
    }

    for (const row of invRes.data) {
      const bay = row.bay
      const cell = row.cell // : 0
      const level = row.level // : 0
      const loc_code = row.loc_code // : "rack1_0_0_0"
      const lpn = row.lpn // : "LPN1"
      const rack = row.rack // : "rack1"
      const container_type = row.container_type // : "pallet"
      Model.createInv(container_type, lpn, rack, bay, level, cell, loc_code)
    }
  }

  // 加载执行器到3D视图上
  async loadExecutorToModel() {
    if (!window['Model']) {
      return
    }

    const deviceRes = await LCC.queryDeviceInfoList()
    if (!deviceRes.success) {
      return
    }

    const deviceList: AgvStatusVo[] = deviceRes.data || []
    for (const agvState of deviceList) {
      const agvItem = Model.find(getAgvItemNameById(agvState.id))
      if (!agvItem) {
        // 还没加载到地图
        const item = JSON.parse(agvState.virtualExecutorPayload)
        const pos = Model.getPositionByLogicXY(agvState.logicX, agvState.logicY)
        if (pos) {
          item.tf[0] = [pos.x, pos.y, pos.z]
        }
        switch (_.toLower(agvState.direction)) {
          // right=0/left=180/up=90/down=-90
          case 'right':
            item.tf[1][1] = 0 // 右侧
            break
          case 'left':
            item.tf[1][1] = 180 // 左侧
            break
          case 'down':
            item.tf[1][1] = -90 // 下方
            break
          case 'up':
            item.tf[1][1] = 90 // 上方
            break
        }
        item.id = getAgvItemNameById(agvState.id)
        item.dt.vehicleId = agvState.id
        Model.createExecutor(item)
      }
    }
  }

  async disconnectEnv() {
    system.showLoading()
    try {
      worldModel.state.runState.isRunning = false

      for (const stopFn of this.stopSubscribe) {
        stopFn()
      }
      this.stopSubscribe.length = 0

      if (this.client) {
        this.client.removeAllListeners()
        this.client.end()
        this.client = null
      }

      if (window['viewport']) {
        const viewport = window['viewport'] as Viewport
        viewport?.runtimeManager?.clear()
      }

    } finally {
      system.clearLoading()
      worldModel.state.runState.isLoading = false
    }
  }

  /**
   * 创建运行环境
   * @param worldId 世界ID
   */
  static async createEnv(worldId: string) {
    throw new Error('Method not implemented.')
  }

  /**
   * 获取所有运行环境
   */
  static async getAllEnv(worldId: string): Promise<EnvInfo[]> {
    // system.invokeServer('')
    if (!worldId) {
      return Promise.reject('World ID is not provided.')
    }
    const res = await Request.request.post('/api/workbench/EnvController@getAllEnv', {
      worldId: worldId
    })

    return res.data
  }

  /**
   * 卸载资源
   */
  dispose(): void {
    this.disconnectEnv().finally()
  }
}