MusicPlayer/lib/ui/music_player.dart

import 'dart:math';
import 'dart:ui';

import 'package:fluentui_system_icons/fluentui_system_icons.dart';
import 'package:flutter/material.dart';
import 'package:music_web_player/api.dart';
import 'package:music_web_player/ui/cover_image.dart';

class MusicPlayer extends StatefulWidget {
  final MusicsList musicsList;

  const MusicPlayer({Key? key, required this.musicsList}) : super(key: key);

  @override
  State<MusicPlayer> createState() => _MusicPlayerState();
}

class _MusicPlayerState extends State<MusicPlayer> {
  final rng = Random();

  final List<MusicEntry> stack = [];
  int currMusicPos = 0;

  MusicEntry get currMusic {
    if (currMusicPos < 0) currMusicPos = 0;

    // Automatically choose next music if required
    if (currMusicPos >= stack.length) {
      var nextId = rng.nextInt(widget.musicsList.length);
      stack.add(widget.musicsList[nextId]);
    }

    return stack[currMusicPos];
  }

  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (context, constraints) => Stack(
        children: [
          // Background image
          CoverImage(
            music: currMusic,
            width: constraints.maxWidth,
            height: constraints.maxHeight,
            fit: BoxFit.cover,
          ),

          ClipRRect(
              // Clip it cleanly.
              child: BackdropFilter(
            filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
            child: Container(
              color: Colors.black.withOpacity(0.8),
              alignment: Alignment.center,
              child: SizedBox(
                width: constraints.maxWidth,
                height: constraints.maxHeight,
              ),
            ),
          )),

          _buildCenter(),
        ],
      ),
    );
  }

  Widget _buildCenter() {
    return Center(
      child: IntrinsicHeight(
        child: Column(
          children: [
            Material(
              borderRadius: const BorderRadius.all(
                Radius.circular(18.0),
              ),
              clipBehavior: Clip.hardEdge,
              child: CoverImage(
                width: 250,
                height: 250,
                music: currMusic,
                fit: BoxFit.cover,
                backgroundColor: Colors.black12,
                icon: const Icon(FluentIcons.music_note_2_24_regular, size: 90),
              ),
            ),
            const SizedBox(height: 40),
            Text(currMusic.title, style: const TextStyle(fontSize: 22)),
            const SizedBox(height: 20),
            Text(currMusic.artist),
          ],
        ),
      ),
    );
  }
}