spotube/lib/components/PlaylistView.dart

import 'package:spotube/provider/Playback.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:spotify/spotify.dart';
import 'package:spotube/components/TrackButton.dart';
import 'package:spotube/provider/SpotifyDI.dart';

class PlaylistView extends StatefulWidget {
  final PlaylistSimple playlist;
  const PlaylistView(this.playlist, {Key? key}) : super(key: key);
  @override
  _PlaylistViewState createState() => _PlaylistViewState();
}

class _PlaylistViewState extends State<PlaylistView> {
  @override
  Widget build(BuildContext context) {
    return Consumer<SpotifyDI>(builder: (_, data, __) {
      return Scaffold(
        body: FutureBuilder<Iterable<Track>>(
            future: data.spotifyApi.playlists
                .getTracksByPlaylistId(widget.playlist.id)
                .all(),
            builder: (context, snapshot) {
              List<Track> tracks = snapshot.data?.toList() ?? [];
              return Column(
                children: [
                  Row(
                    children: [
                      // nav back
                      const BackButton(),
                      // heart playlist
                      IconButton(
                        icon: const Icon(Icons.favorite_outline_rounded),
                        onPressed: () {},
                      ),
                      // play playlist
                      Consumer<Playback>(builder: (context, playback, widget) {
                        var isPlaylistPlaying = playback.currentPlaylist?.id ==
                            this.widget.playlist.id;
                        return IconButton(
                          icon: Icon(
                            isPlaylistPlaying
                                ? Icons.stop_rounded
                                : Icons.play_arrow_rounded,
                          ),
                          onPressed: snapshot.hasData
                              ? () {
                                  if (!isPlaylistPlaying) {
                                    playback.setCurrentPlaylist =
                                        CurrentPlaylist(
                                      tracks: tracks,
                                      id: this.widget.playlist.id!,
                                      name: this.widget.playlist.name!,
                                      thumbnail:
                                          this.widget.playlist.images![0].url!,
                                    );
                                  }
                                }
                              : null,
                        );
                      }),
                    ],
                  ),
                  Center(
                    child: Text(widget.playlist.name!,
                        style: Theme.of(context).textTheme.headline4),
                  ),
                  snapshot.hasError
                      ? const Center(child: Text("Error occurred"))
                      : !snapshot.hasData
                          ? const CircularProgressIndicator.adaptive()
                          : Expanded(
                              child: Scrollbar(
                                isAlwaysShown: true,
                                child: ListView.builder(
                                    itemCount: tracks.length + 1,
                                    itemBuilder: (context, index) {
                                      if (index == 0) {
                                        return Column(
                                          children: [
                                            TrackButton(
                                                index: "#",
                                                trackName: "Title",
                                                artists: ["Artist"],
                                                album: "Album",
                                                playback_time: "Time"),
                                            const Divider()
                                          ],
                                        );
                                      }
                                      Track track = tracks[index - 1];
                                      return TrackButton(
                                        index: (index - 1).toString(),
                                        thumbnail_url: track
                                                .album?.images?.last.url ??
                                            "https://i.scdn.co/image/ab67616d00001e02b993cba8ff7d0a8e9ee18d46",
                                        trackName: track.name!,
                                        artists: track.artists!
                                            .map((e) => e.name!)
                                            .toList(),
                                        album: track.album!.name!,
                                        playback_time: track.duration!.inMinutes
                                            .toString(),
                                        onTap: () {},
                                      );
                                    }),
                              ),
                            ),
                ],
              );
            }),
      );
    });
  }
}