import React from "react";
import {
  Menu,
  Icon,
  Progress,
  Label
} from "semantic-ui-react";
import ReactAudioPlayer from 'react-audio-player'


class MediaPlayer extends React.Component {

  constructor(props) {
    super(props);
    this.updatePlayProgress = this.updatePlayProgress.bind(this);
    this.handlePlay = this.handlePlay.bind(this);
    this.handlePause = this.handlePause.bind(this);
    this.playPause = this.playPause.bind(this);
    this.audioRef = React.createRef();
    this.state = {
      sourceIndex: 0,
      playProgress: 0,
      isPlaying: false
    }
  }
  handlePause = () => { this.setState({ isPlaying: false }); this.props.onPlayPause(false); }
  handlePlay = () => { this.setState({ isPlaying: true }); this.props.onPlayPause(true); }
  playPause = () => { const audio = this.audioRef.current.audioEl.current; if (this.state.isPlaying) { audio.pause(); } else { audio.play(); } }
  playSource(callUrl) {
    const audio = this.audioRef.current.audioEl.current;
    var onEnded = this.props.onEnded;
    audio.src = callUrl;

    var playPromise = audio.play();

    // In browsers that don’t yet support this functionality,
    // playPromise won’t be defined.
    if (playPromise !== undefined) {
      playPromise.then(function () {

      }).catch(function (error) {
        console.log("Automatic playback failed: " + error);
        onEnded();
        // Show a UI element to let the user manually start playback.
      });
    }
  }

  updatePlayProgress() {
    const audio = this.audioRef.current.audioEl.current;
    const { currentTime, duration } = audio;
    var call = this.props.call;

    // this checks to see if it should display the next Source ID
    if (call && ((call.srcList.length - 1) >= (this.state.sourceIndex + 1)) && (currentTime > call.srcList[this.state.sourceIndex + 1].pos)) {
      this.setState({
        sourceIndex: this.state.sourceIndex + 1
      });
    }

    // updates the play percentage progress and current playing time
    this.setState({
      playProgress: currentTime / duration * 100,
      playTime: Math.floor(currentTime)
    });
  }

  componentDidUpdate(prevProps) {
    if (this.props.call && (prevProps.call !== this.props.call)) {
      this.setState({
        sourceIndex: 0
      });

    }

  }

  render() {
    var playEnabled = { "disabled": true }
    var sourceId = "-";

    if (this.props.call) {
      if (this.props.call.srcList.length > this.state.sourceIndex) {
        sourceId = this.props.call.srcList[this.state.sourceIndex].src;
      }
      playEnabled = {};
    }
    return (
      <Menu.Menu>
        <ReactAudioPlayer
          ref={this.audioRef}
          onPause={this.handlePause}
          onPlay={this.handlePlay}
          listenInterval={100}
          onListen={this.updatePlayProgress}
          onEnded={this.props.onEnded}
          autoPlay
        />


        <Menu.Item onClick={this.playPause}  >

          {
            this.state.isPlaying
              ? (<Icon name="pause" />)
              : (<Icon name="play" />)
          }
        </Menu.Item>
        <Menu.Item>
          <Progress inverted percent={this.state.playProgress} />
          <Label color="black">
            {this.state.playTime}
            Sec
          </Label>
          <Label color="black" className="desktop-only">
            {sourceId}
          </Label>

        </Menu.Item>
      </Menu.Menu>
    )
  }
}
export default MediaPlayer;