import BLESDK from './ble'

class taskQueue {
  list = []
  isExecute = false
  overtime = null

  addTask(buffer) {
    if (!BLESDK.deviceInfo.state) return
    this.list.push(buffer)

    if (this.isExecute) return
    this.executeTask()
  }

  executeTask() {
    this.isExecute = !!this.list.length
    if (!this.list.length) return
    if (!BLESDK.deviceInfo.state) {
      this.list = []
      this.isExecute = !!this.list.length
      return
    }
    BLESDK.writeBleValue(new Uint8Array([...this.list[0]]).buffer)
    this.list.shift()

    this.overtime = setTimeout(() => {
      this.stopOverTime()
      this.executeTask()
    }, 300)
  }
  stopOverTime() {
    clearTimeout(this.overtime)
    this.overtime = null
  }
}

export default new taskQueue()