Steaming audio in Flutter with Just Audio (state)

page_manager.dart

import 'package:flutter/material.dart';

class PageManager {
  final progressNotifier = ValueNotifier<ProgressBarState>(
    ProgressBarState(
      current: Duration.zero,
      buffered: Duration.zero,
      total: Duration.zero,
    ),
  );
  final buttonNotifier = ValueNotifier<ButtonState>(ButtonState.paused);
}

class ProgressBarState {
  ProgressBarState({
    required this.current,
    required this.buffered,
    required this.total,
  });
  final Duration current;
  final Duration buffered;
  final Duration total;
}

enum ButtonState {
  paused, playing, loading
}