import { PCMPlayer } from "./pcm-player"
import { WebGLPlayer } from "./webgl"

export function Player() {
  this.hPlayer = 0
  this.PlayOrPause = 0
  this.MediaName = null
  this.isStream = false
  this.canvas = null
  this.timeLabel = null
  this.timeTrack = null
  this.CurPos = 0
  this.displayDuration = "00:00:00"

  this.pcmPlayer = null
  this.webglPlayer = null

  this.trackTimer = null
  this.loop = false
  this.preload = true
  this.preloadFlag = 0
  this.statusCallback = (stat) => {
    console.log(stat)
  }
}

Player.prototype.play = function(url, canvas, isStream, timeTrack, timeLabel, payload) {
  if (this.hPlayer != 0) return

  this.MediaName = url

  this.isStream = isStream

  this.canvas = canvas //hWnd

  this.timeTrack = timeTrack
  this.timeLabel = timeLabel

  var This = this
  this.timeTrack.oninput = function() {
    This.seek(This.timeTrack.value)
  }

  this.TurboWorker = new Worker("/libs/wasmPlayer/turbo.js")
  this.hPlayer = 1
  this.PlayOrPause = 1

  this.TurboWorker.onmessage = function(evt) {
    switch (evt.data.command) {
      case "initialized": {
        This.TurboWorker.postMessage({
          command: "play",
          media_name: url,
          other: isStream,
          payload: payload
        })
        break
      }
      case "create_video": {
        This.VideoParam = evt.data.param //{duration:xxx,width:xxx,height:xxx}
        This.webglPlayer = new WebGLPlayer(This.canvas)
        if (This.timeTrack) {
          This.timeTrack.min = 0
          This.timeTrack.max = This.VideoParam.duration
          This.timeTrack.value = 0
          This.displayDuration = This.formatTime(This.VideoParam.duration / 1000)
        }
        This.startTrackTimer()

        This.statusCallback(0)
        break
      }
      case "create_audio": {
        This.AudioParam = evt.data.param //{channel:Channel,sample_rate:SampleRate}
        This.pcmPlayer = new PCMPlayer({
          encoding: "16bitInt",
          channels: This.AudioParam.channel,
          sampleRate: This.AudioParam.sample_rate,
          flushingTime: 5000
        })

        This.statusCallback(1)
        break
      }
      case "deliver_video": {
        if (!This.isStream && This.preload && This.preloadFlag == 0) {
          This.preloadFlag = 1
          This.pause()
          This.statusCallback(0)
        }

        //sample:{time_stamp:xxx,data:xxx}
        This.CurPos = evt.data.sample.time_stamp
        This.webglPlayer.renderFrame(evt.data.sample.buf, This.VideoParam.width, This.VideoParam.height)
        break
      }
      case "deliver_audio": {
        //sample:{time_stamp:xxx,data:xxx}
        This.pcmPlayer.play(evt.data.sample.buf)
        break
      }
      case "play_failed": {
        This.statusCallback(-1)
        This.stop()
        break
      }
      case "play_end": {
        if (This.loop) {
          This.seek(0)
        }
        break
      }

      default:
        return
    }
  }
}

Player.prototype.pause = function() {
  if (this.hPlayer == 0 || this.PlayOrPause == 0) return
  this.PlayOrPause = 0
  this.TurboWorker.postMessage({ command: "pause" })
}

Player.prototype.resume = function() {
  if (this.hPlayer == 0 || this.PlayOrPause == 1) return
  this.PlayOrPause = 1
  this.TurboWorker.postMessage({ command: "resume" })
}

Player.prototype.stop = function() {
  if (this.hPlayer == 0) return
  this.hPlayer = 0
  this.TurboWorker.postMessage({ command: "stop" })
  this.stopTrackTimer()
  if (this.pcmPlayer) {
    this.pcmPlayer.destroy()
    this.pcmPlayer = null
  }
  //webglPlayer?
}

Player.prototype.seek = function(ms) {
  if (this.hPlayer == 0) return
  this.TurboWorker.postMessage({ command: "seek", pos: ms })

  if (this.pcmPlayer != null) {
    this.pcmPlayer.destroy()
    this.pcmPlayer = new PCMPlayer({
      encoding: "16bitInt",
      channels: this.AudioParam.channel,
      sampleRate: this.AudioParam.sample_rate,
      flushingTime: 5000
    })
  }
}

Player.prototype.fullscreen = function() {
  if (this.webglPlayer) this.webglPlayer.fullscreen()
}

Player.prototype.exitfullscreen = function() {
  if (this.webglPlayer) this.webglPlayer.exitfullscreen()
}

Player.prototype.startTrackTimer = function() {
  var This = this
  this.trackTimer = setInterval(function() {
    if (This.timeTrack) This.timeTrack.value = This.CurPos

    if (This.timeLabel) This.timeLabel.innerHTML = This.formatTime(This.CurPos / 1000) + "/" + This.displayDuration
  }, 500)
}

Player.prototype.stopTrackTimer = function() {
  if (this.trackTimer != null) {
    clearInterval(this.trackTimer)
    this.trackTimer = null
  }
}

Player.prototype.formatTime = function(s) {
  var h = Math.floor(s / 3600) < 10 ? "0" + Math.floor(s / 3600) : Math.floor(s / 3600)
  var m = Math.floor((s / 60) % 60) < 10 ? "0" + Math.floor((s / 60) % 60) : Math.floor((s / 60) % 60)
  var s = Math.floor(s % 60) < 10 ? "0" + Math.floor(s % 60) : Math.floor(s % 60)

  return h + ":" + m + ":" + s
}