lbry-android/app/src/component/fileDownloadButton/view.js

import React from 'react';
import { NativeModules, Text, View, TouchableOpacity } from 'react-native';
import Button from '../button';
import fileDownloadButtonStyle from 'styles/fileDownloadButton';

class FileDownloadButton extends React.PureComponent {
  componentDidMount() {
    const { costInfo, fetchCostInfo, uri } = this.props;
    if (costInfo === undefined) {
      fetchCostInfo(uri);
    }
  }

  componentWillReceiveProps(nextProps) {
    //this.checkAvailability(nextProps.uri);
    //this.restartDownload(nextProps);
  }

  restartDownload(props) {
    const { downloading, fileInfo, uri, restartDownload } = props;

    if (
      !downloading &&
      fileInfo &&
      !fileInfo.completed &&
      fileInfo.written_bytes !== false &&
      fileInfo.written_bytes < fileInfo.total_bytes
    ) {
      restartDownload(uri, fileInfo.outpoint);
    }
  }

  render() {
    const {
      fileInfo,
      downloading,
      uri,
      purchaseUri,
      costInfo,
      isPlayable,
      isViewable,
      onPlay,
      onView,
      loading,
      doPause,
      style,
      openFile,
      onButtonLayout,
    } = this.props;

    if ((fileInfo && !fileInfo.stopped) || loading || downloading) {
      const progress =
          fileInfo && fileInfo.written_bytes ? fileInfo.written_bytes / fileInfo.total_bytes * 100 : 0,
        label = fileInfo ? progress.toFixed(0) + '% complete' : 'Connecting...';

      return (
        <View style={[style, fileDownloadButtonStyle.container]}>
          <View style={{ width: `${progress}%`, backgroundColor: '#ff0000', position: 'absolute', left: 0, top: 0 }}></View>
          <Text style={fileDownloadButtonStyle.text}>{label}</Text>
        </View>
      );
    } else if (!fileInfo && !downloading) {
      if (!costInfo) {
        return (
          <View style={[style, fileDownloadButtonStyle.container]}>
            <Text style={fileDownloadButtonStyle.text}>Fetching cost info...</Text>
          </View>
        );
      }
      return (
        <Button icon={isPlayable ? 'play' : null}
                text={(isPlayable ? 'Play' : (isViewable ? 'View' : 'Download'))}
                onLayout={onButtonLayout}
                style={[style, fileDownloadButtonStyle.container]} onPress={() => {
          if (NativeModules.Firebase) {
            NativeModules.Firebase.track('purchase_uri', { uri: uri });
          }
          purchaseUri(uri, costInfo, !isPlayable);
          if (NativeModules.UtilityModule) {
            NativeModules.UtilityModule.checkDownloads();
          }
          if (isPlayable && onPlay) {
            this.props.onPlay();
          }
          if (isViewable && onView) {
            this.props.onView();
          }
        }} />
      );
    } else if (fileInfo && fileInfo.download_path) {
      return (
        <TouchableOpacity onLayout={onButtonLayout}
                          style={[style, fileDownloadButtonStyle.container]} onPress={openFile}>
          <Text style={fileDownloadButtonStyle.text}>{isViewable ? 'View' : 'Open'}</Text>
        </TouchableOpacity>
      );
    }

    return null;
  }
}

export default FileDownloadButton;