store: Track theme setting through global store

Signed-off-by: Zixuan James Li <[email protected]>

lib/model/store.dart

@@ -51,8 +51,31 @@ export 'database.dart' show Account, AccountsCompanion, AccountAlreadyExistsExce
 ///  * [LiveGlobalStore], the implementation of this class that
 ///    we use outside of tests.
 abstract class GlobalStore extends ChangeNotifier {
-  GlobalStore({required Iterable<Account> accounts})
-    : _accounts = Map.fromEntries(accounts.map((a) => MapEntry(a.id, a)));
+  GlobalStore({
+    required GlobalSettingsData globalSettings,
+    required Iterable<Account> accounts,
+  })
+    : _globalSettings = globalSettings,
+      _accounts = Map.fromEntries(accounts.map((a) => MapEntry(a.id, a)));
+
+  /// A cache of the [GlobalSettingsData] singleton in the underlying data store.
+  GlobalSettingsData get globalSettings => _globalSettings;
+  GlobalSettingsData _globalSettings;
+
+  /// Update the global settings in the store, return the new version.
+  ///
+  /// The global settings must already exist in the store.
+  Future<GlobalSettingsData> updateGlobalSettings(GlobalSettingsCompanion data) async {
+    await doUpdateGlobalSettings(data);
+    _globalSettings = _globalSettings.copyWithCompanion(data);
+    notifyListeners();
+    return _globalSettings;
+  }
+
+  /// Update the global settings in the underlying data store.
+  ///
+  /// This should only be called from [updateGlobalSettings].
+  Future<void> doUpdateGlobalSettings(GlobalSettingsCompanion data);
 
   /// A cache of the [Accounts] table in the underlying data store.
   final Map<int, Account> _accounts;
@@ -756,6 +779,7 @@ Uri? tryResolveUrl(Uri baseUrl, String reference) {
 class LiveGlobalStore extends GlobalStore {
   LiveGlobalStore._({
     required AppDatabase db,
+    required super.globalSettings,
     required super.accounts,
   }) : _db = db;
 
@@ -772,8 +796,11 @@ class LiveGlobalStore extends GlobalStore {
   // by doing this loading up front before constructing a [GlobalStore].
   static Future<GlobalStore> load() async {
     final db = AppDatabase(NativeDatabase.createInBackground(await _dbFile()));
+    final globalSettings = await db.ensureGlobalSettings();
     final accounts = await db.select(db.accounts).get();
-    return LiveGlobalStore._(db: db, accounts: accounts);
+    return LiveGlobalStore._(db: db,
+      globalSettings: globalSettings,
+      accounts: accounts);
   }
 
   /// The file path to use for the app database.
@@ -800,6 +827,12 @@ class LiveGlobalStore extends GlobalStore {
 
   final AppDatabase _db;
 
+  @override
+  Future<void> doUpdateGlobalSettings(GlobalSettingsCompanion data) async {
+    final rowsAffected = await _db.update(_db.globalSettings).write(data);
+    assert(rowsAffected == 1);
+  }
+
   @override
   Future<PerAccountStore> doLoadPerAccount(int accountId) async {
     final updateMachine = await UpdateMachine.load(this, accountId);

lib/widgets/app.dart

@@ -174,7 +174,6 @@ class _ZulipAppState extends State<ZulipApp> with WidgetsBindingObserver {
 
   @override
   Widget build(BuildContext context) {
-    final themeData = zulipThemeData(context);
     return GlobalStoreWidget(
       child: Builder(builder: (context) {
         final globalStore = GlobalStoreWidget.of(context);
@@ -184,7 +183,9 @@ class _ZulipAppState extends State<ZulipApp> with WidgetsBindingObserver {
           title: 'Zulip',
           localizationsDelegates: ZulipLocalizations.localizationsDelegates,
           supportedLocales: ZulipLocalizations.supportedLocales,
-          theme: themeData,
+          // The context has to be taken from the [Builder] because
+          // [zulipThemeData] requires access to [GlobalStoreWidget] in the tree.
+          theme: zulipThemeData(context),
 
           navigatorKey: ZulipApp.navigatorKey,
           navigatorObservers: widget.navigatorObservers ?? const [],

lib/widgets/theme.dart

@@ -1,16 +1,27 @@
 import 'package:flutter/material.dart';
 
 import '../api/model/model.dart';
+import '../model/settings.dart';
 import 'content.dart';
 import 'emoji_reaction.dart';
 import 'message_list.dart';
 import 'channel_colors.dart';
+import 'store.dart';
 import 'text.dart';
 
 ThemeData zulipThemeData(BuildContext context) {
   final DesignVariables designVariables;
   final List<ThemeExtension> themeExtensions;
-  Brightness brightness = MediaQuery.platformBrightnessOf(context);
+  final globalSettings = GlobalStoreWidget.of(context).globalSettings;
+  Brightness brightness;
+  switch (globalSettings.themeSetting) {
+    case ThemeSetting.unset:
+      brightness = MediaQuery.platformBrightnessOf(context);
+    case ThemeSetting.light:
+      brightness = Brightness.light;
+    case ThemeSetting.dark:
+      brightness = Brightness.dark;
+  }
 
   // This applies Material 3's color system to produce a palette of
   // appropriately matching and contrasting colors for use in a UI.

test/example_data.dart

@@ -8,7 +8,9 @@ import 'package:zulip/api/model/submessage.dart';
 import 'package:zulip/api/route/messages.dart';
 import 'package:zulip/api/route/realm.dart';
 import 'package:zulip/api/route/channels.dart';
+import 'package:zulip/model/database.dart';
 import 'package:zulip/model/narrow.dart';
+import 'package:zulip/model/settings.dart';
 import 'package:zulip/model/store.dart';
 
 import 'model/test_store.dart';
@@ -805,8 +807,15 @@ ChannelUpdateEvent channelUpdateEvent(
 // The entire per-account or global state.
 //
 
-TestGlobalStore globalStore({List<Account> accounts = const []}) {
-  return TestGlobalStore(accounts: accounts);
+const defaultGlobalSettings = GlobalSettingsData(
+  themeSetting: ThemeSetting.unset,
+);
+
+TestGlobalStore globalStore({
+  GlobalSettingsData globalSettings = defaultGlobalSettings,
+  List<Account> accounts = const [],
+}) {
+  return TestGlobalStore(globalSettings: globalSettings, accounts: accounts);
 }
 
 InitialSnapshot initialSnapshot({

test/model/binding.dart

@@ -11,6 +11,7 @@ import 'package:zulip/model/binding.dart';
 import 'package:zulip/model/store.dart';
 import 'package:zulip/widgets/app.dart';
 
+import '../example_data.dart' as eg;
 import 'test_store.dart';
 
 /// The binding instance used in tests.
@@ -85,7 +86,7 @@ class TestZulipBinding extends ZulipBinding {
   ///
   /// Tests that access this getter, or that mount a [GlobalStoreWidget],
   /// should clean up by calling [reset].
-  TestGlobalStore get globalStore => _globalStore ??= TestGlobalStore(accounts: []);
+  TestGlobalStore get globalStore => _globalStore ??= eg.globalStore();
   TestGlobalStore? _globalStore;
 
   bool _debugAlreadyLoadedStore = false;

test/model/store_test.dart

@@ -406,7 +406,7 @@ void main() {
     late FakeApiConnection connection;
 
     Future<void> prepareStore({Account? account}) async {
-      globalStore = TestGlobalStore(accounts: []);
+      globalStore = eg.globalStore();
       account ??= eg.selfAccount;
       await globalStore.insertAccount(account.toCompanion(false));
       connection = (globalStore.apiConnectionFromAccount(account)
@@ -581,7 +581,7 @@ void main() {
     }
 
     Future<void> preparePoll({int? lastEventId}) async {
-      globalStore = TestGlobalStore(accounts: []);
+      globalStore = eg.globalStore();
       await globalStore.add(eg.selfAccount, eg.initialSnapshot(
         lastEventId: lastEventId));
       await globalStore.perAccount(eg.selfAccount.id);
@@ -1086,7 +1086,10 @@ void main() {
 }
 
 class LoadingTestGlobalStore extends TestGlobalStore {
-  LoadingTestGlobalStore({required super.accounts});
+  LoadingTestGlobalStore({
+    super.globalSettings = eg.defaultGlobalSettings,
+    required super.accounts,
+  });
 
   Map<int, List<Completer<PerAccountStore>>> completers = {};
 

test/model/test_store.dart

@@ -1,6 +1,7 @@
 import 'package:zulip/api/model/events.dart';
 import 'package:zulip/api/model/initial_snapshot.dart';
 import 'package:zulip/api/model/model.dart';
+import 'package:zulip/model/database.dart';
 import 'package:zulip/model/store.dart';
 import 'package:zulip/widgets/store.dart';
 
@@ -22,7 +23,15 @@ import '../example_data.dart' as eg;
 ///
 /// See also [TestZulipBinding.globalStore], which provides one of these.
 class TestGlobalStore extends GlobalStore {
-  TestGlobalStore({required super.accounts});
+  TestGlobalStore({required super.globalSettings, required super.accounts})
+    : _globalSettings = globalSettings;
+
+  GlobalSettingsData? _globalSettings;
+
+  @override
+  Future<void> doUpdateGlobalSettings(GlobalSettingsCompanion data) async {
+    _globalSettings = _globalSettings!.copyWithCompanion(data);
+  }
 
   final Map<
     ({Uri realmUrl, int? zulipFeatureLevel, String? email, String? apiKey}),

test/widgets/test_app.dart

@@ -28,17 +28,22 @@ class TestZulipApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return GlobalStoreWidget(
-      child: MaterialApp(
-        title: 'Zulip',
-        localizationsDelegates: ZulipLocalizations.localizationsDelegates,
-        supportedLocales: ZulipLocalizations.supportedLocales,
-        theme: zulipThemeData(context),
-
-        navigatorObservers: navigatorObservers ?? const [],
-
-        home: accountId != null
-          ? PerAccountStoreWidget(accountId: accountId!, child: child)
-          : child,
-      ));
+      child: Builder(
+        builder: (context) {
+          return MaterialApp(
+            title: 'Zulip',
+            localizationsDelegates: ZulipLocalizations.localizationsDelegates,
+            supportedLocales: ZulipLocalizations.supportedLocales,
+            // The context has to be taken from the [Builder] because
+            // [zulipThemeData] requires access to [GlobalStoreWidget] in the tree.
+            theme: zulipThemeData(context),
+
+            navigatorObservers: navigatorObservers ?? const [],
+
+            home: accountId != null
+              ? PerAccountStoreWidget(accountId: accountId!, child: child)
+              : child
+          );
+        }));
   }
 }

test/widgets/theme_test.dart

@@ -1,8 +1,12 @@
 import 'package:checks/checks.dart';
+import 'package:drift/drift.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:zulip/model/database.dart';
+import 'package:zulip/model/settings.dart';
 import 'package:zulip/widgets/channel_colors.dart';
+import 'package:zulip/widgets/store.dart';
 import 'package:zulip/widgets/text.dart';
 import 'package:zulip/widgets/theme.dart';
 
@@ -97,6 +101,25 @@ void main() {
         check(() => a.lerp(b, 0.5)).returnsNormally();
       });
     });
+
+    testWidgets('follow globalSettings.themeSetting if not unset', (tester) async {
+      tester.platformDispatcher.platformBrightnessTestValue = Brightness.light;
+      addTearDown(tester.platformDispatcher.clearPlatformBrightnessTestValue);
+
+      await tester.pumpWidget(const TestZulipApp());
+      await tester.pump();
+
+      final element = tester.element(find.byType(Placeholder));
+      check(zulipThemeData(element).brightness).equals(Brightness.light);
+
+      await GlobalStoreWidget.of(element).updateGlobalSettings(
+        const GlobalSettingsCompanion(themeSetting: Value(ThemeSetting.dark)));
+      check(zulipThemeData(element).brightness).equals(Brightness.dark);
+
+      await GlobalStoreWidget.of(element).updateGlobalSettings(
+        const GlobalSettingsCompanion(themeSetting: Value(ThemeSetting.unset)));
+      check(zulipThemeData(element).brightness).equals(Brightness.light);
+    });
   });
 
   group('colorSwatchFor', () {