wip; settings: Add global settings

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

lib/model/store.dart

@@ -57,6 +57,9 @@ abstract class GlobalStore extends ChangeNotifier {
   /// A cache of the [Accounts] table in the underlying data store.
   final Map<int, Account> _accounts;
 
+  /// A cache of the [GlobalSettingsData] singleton in the underlying data store.
+  GlobalSettingsData? _globalSettings;
+
   // TODO settings (those that are per-device rather than per-account)
   // TODO push token, and other data corresponding to GlobalSessionState
 
@@ -223,6 +226,40 @@ abstract class GlobalStore extends ChangeNotifier {
   /// Remove an account from the underlying data store.
   Future<void> doRemoveAccount(int accountId);
 
+  GlobalSettingsData? get globalSettingsSync => _globalSettings;
+
+  /// Get global settings from the store.
+  ///
+  /// Use the cache if already loaded.
+  /// Otherwise, load it from the underlying store.
+  ///
+  /// Consider checking [globalSettingsSync] before using this.
+  Future<GlobalSettingsData> getGlobalSettings() async {
+    if (globalSettingsSync != null) return globalSettingsSync!;
+    return await loadGlobalSettings();
+  }
+
+  /// Load global settings from the underlying data store, unconditionally.
+  ///
+  /// This should only be called from [getGlobalSettings].
+  Future<GlobalSettingsData> loadGlobalSettings();
+
+  /// 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 {
+    assert(_globalSettings != null);
+    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);
+
   @override
   String toString() => '${objectRuntimeType(this, 'GlobalStore')}#${shortHash(this)}';
 }
@@ -835,6 +872,18 @@ class LiveGlobalStore extends GlobalStore {
     assert(rowsAffected == 1);
   }
 
+  @override
+  Future<GlobalSettingsData> loadGlobalSettings() async {
+    _globalSettings = await _db.ensureGlobalSettings();
+    return _globalSettings!;
+  }
+
+  @override
+  Future<void> doUpdateGlobalSettings(GlobalSettingsCompanion data) async {
+    final rowsAffected = await _db.update(_db.globalSettings).write(data);
+    assert(rowsAffected == 1);
+  }
+
   @override
   String toString() => '${objectRuntimeType(this, 'LiveGlobalStore')}#${shortHash(this)}';
 }

lib/widgets/content.dart

@@ -14,6 +14,7 @@ import '../generated/l10n/zulip_localizations.dart';
 import '../model/avatar_url.dart';
 import '../model/binding.dart';
 import '../model/content.dart';
+import '../model/database.dart';
 import '../model/internal_link.dart';
 import 'code_block.dart';
 import 'dialog.dart';
@@ -1342,17 +1343,20 @@ void _launchUrl(BuildContext context, String urlString) async {
     return;
   }
 
+  final globalSettings = GlobalStoreWidget.of(context).globalSettingsSync;
   bool launched = false;
   String? errorMessage;
   try {
     launched = await ZulipBinding.instance.launchUrl(url,
-      mode: switch (defaultTargetPlatform) {
+      mode: switch ((globalSettings!.browserPreference, defaultTargetPlatform)) {
+        (BrowserPreference.embedded, _) => UrlLaunchMode.inAppBrowserView,
+        (BrowserPreference.external, _) => UrlLaunchMode.externalApplication,
         // On iOS we prefer LaunchMode.externalApplication because (for
         // HTTP URLs) LaunchMode.platformDefault uses SFSafariViewController,
         // which gives an awkward UX as described here:
         //  https://chat.zulip.org/#narrow/stream/48-mobile/topic/in-app.20browser/near/1169118
-        TargetPlatform.iOS => UrlLaunchMode.externalApplication,
-        _ => UrlLaunchMode.platformDefault,
+        (BrowserPreference.none, TargetPlatform.iOS) => UrlLaunchMode.externalApplication,
+        (BrowserPreference.none, _) => UrlLaunchMode.platformDefault,
       });
   } on PlatformException catch (e) {
     errorMessage = e.message;

lib/widgets/theme.dart

@@ -1,16 +1,27 @@
 import 'package:flutter/material.dart';
 
 import '../api/model/model.dart';
+import '../model/database.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).globalSettingsSync;
+  Brightness brightness;
+  switch (globalSettings!.themeSetting) {
+    case ThemeSetting.none:
+      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/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';
 
@@ -157,6 +158,25 @@ class TestGlobalStore extends GlobalStore {
       store: store, initialSnapshot: initialSnapshot);
     return Future.value(store);
   }
+
+  GlobalSettingsData? _globalSettings;
+
+  @override
+  Future<GlobalSettingsData> loadGlobalSettings() async {
+    if (_globalSettings != null) {
+      return _globalSettings!;
+    }
+    _globalSettings = const GlobalSettingsData(
+      themeSetting: ThemeSetting.none,
+      browserPreference: BrowserPreference.none,
+    );
+    return Future.value(_globalSettings);
+  }
+
+  @override
+  Future<void> doUpdateGlobalSettings(GlobalSettingsCompanion data) async {
+    _globalSettings = _globalSettings!.copyWithCompanion(data);
+  }
 }
 
 extension PerAccountStoreTestExtension on PerAccountStore {