fix(download): allow dragging the quality picker to dismiss

lib/widgets/download_service_picker.dart

@@ -13,6 +13,7 @@ class DownloadServicePicker extends ConsumerStatefulWidget {
   final String? coverUrl;
   final void Function(String quality, String service) onSelect;
   final String? recommendedService;
+  final ScrollController? scrollController;
 
   const DownloadServicePicker({
     super.key,
@@ -21,6 +22,7 @@ class DownloadServicePicker extends ConsumerStatefulWidget {
     this.coverUrl,
     required this.onSelect,
     this.recommendedService,
+    this.scrollController,
   });
 
   @override
@@ -42,15 +44,15 @@ class DownloadServicePicker extends ConsumerStatefulWidget {
       useRootNavigator: true,
       backgroundColor: colorScheme.surfaceContainerHigh,
       isScrollControlled: true,
-      constraints: BoxConstraints(
-        maxHeight: MediaQuery.sizeOf(context).height * 0.88,
-      ),
-      builder: (context) => DownloadServicePicker(
-        trackName: trackName,
-        artistName: artistName,
-        coverUrl: coverUrl,
-        onSelect: onSelect,
-        recommendedService: recommendedService,
+      builder: (context) => AppDraggableSheet(
+        builder: (context, scrollController) => DownloadServicePicker(
+          trackName: trackName,
+          artistName: artistName,
+          coverUrl: coverUrl,
+          onSelect: onSelect,
+          recommendedService: recommendedService,
+          scrollController: scrollController,
+        ),
       ),
     );
   }
@@ -122,7 +124,10 @@ class _DownloadServicePickerState extends ConsumerState<DownloadServicePicker> {
     final qualityOptions = _getQualityOptions(downloadExtensions);
 
     return SafeArea(
+      top: false,
       child: SingleChildScrollView(
+        controller: widget.scrollController,
+        physics: const ClampingScrollPhysics(),
         child: Column(
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.start,

test/download_service_picker_drag_test.dart

@@ -0,0 +1,85 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:spotiflac_android/l10n/app_localizations.dart';
+import 'package:spotiflac_android/models/settings.dart';
+import 'package:spotiflac_android/providers/extension_provider.dart';
+import 'package:spotiflac_android/providers/settings_provider.dart';
+import 'package:spotiflac_android/widgets/download_service_picker.dart';
+
+class _Extensions extends ExtensionNotifier {
+  @override
+  ExtensionState build() => ExtensionState(
+    extensions: [
+      Extension(
+        id: 'example',
+        name: 'example',
+        displayName: 'Example',
+        version: '1.0.0',
+        description: '',
+        enabled: true,
+        status: 'loaded',
+        hasDownloadProvider: true,
+        qualityOptions: List.generate(
+          16,
+          (index) => QualityOption(id: '$index', label: 'Quality $index'),
+        ),
+      ),
+    ],
+  );
+
+  @override
+  void refreshEnabledExtensionHealth({bool force = false}) {}
+}
+
+class _Settings extends SettingsNotifier {
+  @override
+  AppSettings build() => const AppSettings();
+}
+
+void main() {
+  testWidgets('iOS picker scrolls options and dismisses when pulled down', (
+    tester,
+  ) async {
+    await tester.pumpWidget(
+      ProviderScope(
+        overrides: [
+          extensionProvider.overrideWith(_Extensions.new),
+          settingsProvider.overrideWith(_Settings.new),
+        ],
+        child: MaterialApp(
+          theme: ThemeData(platform: TargetPlatform.iOS),
+          localizationsDelegates: AppLocalizations.localizationsDelegates,
+          supportedLocales: AppLocalizations.supportedLocales,
+          home: Scaffold(
+            body: Builder(
+              builder: (context) => TextButton(
+                onPressed: () => DownloadServicePicker.show(
+                  context,
+                  trackName: 'Example track',
+                  onSelect: (_, _) {},
+                ),
+                child: const Text('Open'),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.tap(find.text('Open'));
+    await tester.pumpAndSettle();
+    final scroll = find.descendant(
+      of: find.byType(DownloadServicePicker),
+      matching: find.byType(SingleChildScrollView),
+    );
+    await tester.drag(scroll, const Offset(0, -300));
+    await tester.pumpAndSettle();
+    expect(find.byType(DownloadServicePicker), findsOneWidget);
+    await tester.drag(scroll, const Offset(0, 1500));
+    await tester.pumpAndSettle();
+    await tester.drag(find.text('Example track'), const Offset(0, 600));
+    await tester.pumpAndSettle();
+    expect(find.byType(DownloadServicePicker), findsNothing);
+    expect(tester.takeException(), isNull);
+  });
+}