spotube/lib/components/Playlist/PlaylistView.dart

import 'dart:convert';

import 'package:flutter/services.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:spotube/components/Shared/HeartButton.dart';
import 'package:spotube/components/Shared/TrackCollectionView.dart';
import 'package:spotube/helpers/image-to-url-string.dart';
import 'package:spotube/hooks/usePaletteColor.dart';
import 'package:spotube/models/CurrentPlaylist.dart';
import 'package:spotube/models/Logger.dart';
import 'package:spotube/provider/Auth.dart';
import 'package:spotube/provider/Playback.dart';
import 'package:flutter/material.dart';
import 'package:spotify/spotify.dart';
import 'package:spotube/provider/SpotifyDI.dart';
import 'package:spotube/provider/SpotifyRequests.dart';

class PlaylistView extends HookConsumerWidget {
  final logger = getLogger(PlaylistView);
  final PlaylistSimple playlist;
  PlaylistView(this.playlist, {Key? key}) : super(key: key);

  playPlaylist(Playback playback, List<Track> tracks,
      {Track? currentTrack}) async {
    currentTrack ??= tracks.first;
    final isPlaylistPlaying = playback.currentPlaylist?.id != null &&
        playback.currentPlaylist?.id == playlist.id;
    if (!isPlaylistPlaying) {
      playback.setCurrentPlaylist = CurrentPlaylist(
        tracks: tracks,
        id: playlist.id!,
        name: playlist.name!,
        thumbnail: imageToUrlString(playlist.images),
      );
      playback.setCurrentTrack = currentTrack;
    } else if (isPlaylistPlaying &&
        currentTrack.id != null &&
        currentTrack.id != playback.currentTrack?.id) {
      playback.setCurrentTrack = currentTrack;
    }
    await playback.startPlaying();
  }

  @override
  Widget build(BuildContext context, ref) {
    Playback playback = ref.watch(playbackProvider);
    final Auth auth = ref.watch(authProvider);
    SpotifyApi spotify = ref.watch(spotifyProvider);
    final isPlaylistPlaying = playback.currentPlaylist?.id != null &&
        playback.currentPlaylist?.id == playlist.id;

    final meSnapshot = ref.watch(currentUserQuery);
    final tracksSnapshot = ref.watch(playlistTracksQuery(playlist.id!));

    final titleImage =
        useMemoized(() => imageToUrlString(playlist.images), [playlist.images]);

    final color = usePaletteGenerator(
      context,
      titleImage,
    ).dominantColor;

    return TrackCollectionView(
      id: playlist.id!,
      isPlaying: isPlaylistPlaying,
      title: playlist.name!,
      titleImage: titleImage,
      tracksSnapshot: tracksSnapshot,
      description: playlist.description,
      isOwned: playlist.owner?.id != null &&
          playlist.owner!.id == meSnapshot.asData?.value.id,
      onPlay: ([track]) {
        if (tracksSnapshot.asData?.value != null) {
          playPlaylist(
            playback,
            tracksSnapshot.asData!.value,
            currentTrack: track,
          );
        }
      },
      showShare: playlist.id != "user-liked-tracks",
      onShare: () {
        final data = "https://open.spotify.com/playlist/${playlist.id}";
        Clipboard.setData(
          ClipboardData(text: data),
        ).then((_) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(
              width: 300,
              behavior: SnackBarBehavior.floating,
              content: Text(
                "Copied $data to clipboard",
                textAlign: TextAlign.center,
              ),
            ),
          );
        });
      },
      heartBtn: (auth.isLoggedIn && playlist.id != "user-liked-tracks"
          ? meSnapshot.when(
              data: (me) {
                final query = playlistIsFollowedQuery(
                    jsonEncode({"playlistId": playlist.id, "userId": me.id!}));
                final followingSnapshot = ref.watch(query);

                return followingSnapshot.when(
                  data: (isFollowing) {
                    return HeartButton(
                      isLiked: isFollowing,
                      color: color?.titleTextColor,
                      icon: playlist.owner?.id != null &&
                              me.id == playlist.owner?.id
                          ? Icons.delete_outline_rounded
                          : null,
                      onPressed: () async {
                        try {
                          isFollowing
                              ? await spotify.playlists
                                  .unfollowPlaylist(playlist.id!)
                              : await spotify.playlists
                                  .followPlaylist(playlist.id!);
                        } catch (e, stack) {
                          logger.e("FollowButton.onPressed", e, stack);
                        } finally {
                          ref.refresh(query);
                          ref.refresh(currentUserPlaylistsQuery);
                        }
                      },
                    );
                  },
                  error: (error, _) => Text("Error $error"),
                  loading: () => const CircularProgressIndicator(),
                );
              },
              error: (error, _) => Text("Error $error"),
              loading: () => const CircularProgressIndicator(),
            )
          : null),
    );
  }
}