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mobile: Integrate with server

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This commit is contained in:
Elias Projahn 2020-04-26 15:35:45 +02:00
parent 60a474ea56
commit c93ebf17a0
20 changed files with 751 additions and 740 deletions
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166
mobile/lib/screens/program.dart
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@ -8,90 +8,6 @@ import '../music_library.dart';
import '../widgets/play_pause_button.dart';
import '../widgets/recording_tile.dart';
/// Data class to bundle information from the database on one track.
class ProgramItem {
/// ID of the recording.
///
/// We don't need the real recording, as the [RecordingTile] widget handles
/// that for us. If the recording is the same one, as the one from the
/// previous track, this will be null.
final int recordingId;
/// List of work parts contained in this track.
///
/// This will include the parts linked in the track as well as all parents of
/// them, if there are gaps between them (i.e. some parts are missing).
final List<Work> workParts;
ProgramItem({
this.recordingId,
this.workParts,
});
}
/// Widget displaying a [ProgramItem].
class ProgramTile extends StatelessWidget {
final ProgramItem item;
final bool isPlaying;
ProgramTile({
this.item,
this.isPlaying,
});
@override
Widget build(BuildContext context) {
return Row(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(4.0),
child: isPlaying
? const Icon(Icons.play_arrow)
: SizedBox(
width: 24.0,
height: 24.0,
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
if (item.recordingId != null) ...[
RecordingTile(
recordingId: item.recordingId,
),
SizedBox(
height: 8.0,
),
],
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
for (final part in item.workParts)
Padding(
padding: const EdgeInsets.only(
left: 8.0,
),
child: Text(
part.title,
style: TextStyle(
fontStyle: FontStyle.italic,
),
),
),
],
),
],
),
),
),
],
);
}
}
class ProgramScreen extends StatefulWidget {
@override
_ProgramScreenState createState() => _ProgramScreenState();
@ -103,7 +19,7 @@ class _ProgramScreenState extends State<ProgramScreen> {
StreamSubscription<bool> playerActiveSubscription;
StreamSubscription<List<InternalTrack>> playlistSubscription;
List<ProgramItem> items = [];
List<Widget> widgets = [];
StreamSubscription<double> positionSubscription;
double position = 0.0;
@ -149,7 +65,7 @@ class _ProgramScreenState extends State<ProgramScreen> {
/// Go through the tracks of [playlist] and preprocess them for displaying.
Future<void> updateProgram(List<InternalTrack> playlist) async {
List<ProgramItem> newItems = [];
List<Widget> newWidgets = [];
// The following variables exist to adapt the resulting ProgramItem to its
// predecessor.
@ -162,42 +78,59 @@ class _ProgramScreenState extends State<ProgramScreen> {
// from the database again.
int lastWorkId;
// This will always contain the parts of the current work.
List<Work> workParts = [];
// This will contain information on the last new work.
WorkInfo workInfo;
for (var i = 0; i < playlist.length; i++) {
// The data that will be stored in the resulting ProgramItem.
int newRecordingId;
List<Work> newWorkParts = [];
// The widgets displayed for this track.
List<Widget> children = [];
final track = playlist[i];
final recordingId = track.track.recordingId;
final partIds = track.track.partIds;
// newRecordingId will be null, if the recording ID is the same. This
// also means, that the work is the same, so workParts doesn't have to
// be updated either.
// If the recording is the same, the work will also be the same, so
// workInfo doesn't have to be updated either.
if (recordingId != lastRecordingId) {
lastRecordingId = recordingId;
newRecordingId = recordingId;
final recording =
await backend.db.recordingById(recordingId).getSingle();
final recordingInfo = await backend.db.getRecording(recordingId);
if (recording.work != lastWorkId) {
workParts = await backend.db.workParts(recording.work).get();
if (recordingInfo.recording.work != lastWorkId) {
lastWorkId = recordingInfo.recording.work;
workInfo = await backend.db.getWork(lastWorkId);
}
lastWorkId = recording.work;
children.addAll([
RecordingTile(
workInfo: workInfo,
recordingInfo: recordingInfo,
),
SizedBox(
height: 8.0,
),
]);
}
for (final partId in partIds) {
newWorkParts.add(workParts[partId]);
final partInfo = workInfo.parts[partId];
children.add(Padding(
padding: const EdgeInsets.only(
left: 8.0,
),
child: Text(
partInfo.work.title,
style: TextStyle(
fontStyle: FontStyle.italic,
),
),
));
}
newItems.add(ProgramItem(
recordingId: newRecordingId,
workParts: newWorkParts,
newWidgets.add(Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: children,
));
}
@ -205,7 +138,7 @@ class _ProgramScreenState extends State<ProgramScreen> {
// function might take some time.
if (mounted) {
setState(() {
items = newItems;
widgets = newWidgets;
});
}
}
@ -225,12 +158,27 @@ class _ProgramScreenState extends State<ProgramScreen> {
builder: (context, snapshot) {
if (snapshot.hasData) {
return ListView.builder(
itemCount: items.length,
itemCount: widgets.length,
itemBuilder: (context, index) {
return InkWell(
child: ProgramTile(
item: items[index],
isPlaying: index == snapshot?.data,
child: Row(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(4.0),
child: index == snapshot.data
? const Icon(Icons.play_arrow)
: SizedBox(
width: 24.0,
height: 24.0,
),
),
Expanded(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: widgets[index],
),
),
],
),
onTap: () {
backend.player.skipTo(index);