Chat - Send file message.js

  const selectFile = async () => {
    try {
      if (Platform.OS === 'android') {
        const permission = await check(PERMISSIONS.ANDROID.READ_EXTERNAL_STORAGE);
        if (permission !== RESULTS.GRANTED) {
          const result = await request(PERMISSIONS.ANDROID.READ_EXTERNAL_STORAGE);
          if (result !== RESULTS.GRANTED) {
            throw new Error('Please allow the storage access permission request.');
          }
        }
      } else if (Platform.OS === 'ios') {
        // TODO:
      }
      const result = await DocumentPicker.pick({
        type: [
          DocumentPicker.types.images,
          DocumentPicker.types.video,
          DocumentPicker.types.audio,
          DocumentPicker.types.plainText,
          DocumentPicker.types.zip
        ]
      });
      const copyPath = `${RNFS.TemporaryDirectoryPath}/${result.name}`;
      await RNFS.copyFile(result.uri, copyPath);

      const fileStat = await RNFS.stat(copyPath);
      const params = new sendbird.FileMessageParams();
      params.file = {
        ...result,
        uri: `file://${fileStat.path}`
      };
      dispatch({ type: 'start-loading' });
      channel.sendFileMessage(params, (err, message) => {
        dispatch({ type: 'end-loading' });
        if (!err) {
          dispatch({ type: 'send-message', payload: { message } });
        } else {
          setTimeout(() => {
            dispatch({ type: 'error', payload: { error: 'Failed to send a message.' } });
          }, 500);
        }
      });
    } catch (err) {
      console.log(err);
      if (!DocumentPicker.isCancel(err)) {
        dispatch({ type: 'error', payload: { error: err.message } });
      }
    }
  };