Persist theme

Persist theme in sqlite database.
A new table was created for this.

Add migration to add table for persisted theme

lib/database.dart

@@ -8,17 +8,23 @@ import 'package:sqlite3_flutter_libs/sqlite3_flutter_libs.dart';
 
 part 'database.g.dart';
 
-class NoteTable extends Table {
+var database = AppDatabase(); //global, since we should only use one instance
+
+class PersistentNote extends Table {
   TextColumn get id => text()();
   TextColumn get content => text()();
 }
 
-@DriftDatabase(tables: [NoteTable])
+class PersistentTheme extends Table {
+  TextColumn get brightness => text().withDefault(const Constant("dark"))();
+}
+
+@DriftDatabase(tables: [PersistentNote, PersistentTheme])
 class AppDatabase extends _$AppDatabase {
   AppDatabase() : super(_openConnection());
 
   @override
-  int get schemaVersion => 1;
+  int get schemaVersion => 2;
 
   @override
   MigrationStrategy get migration {
@@ -27,30 +33,26 @@ class AppDatabase extends _$AppDatabase {
         await m.createAll();
       },
       onUpgrade: (Migrator m, int from, int to) async {
-        if (from < 2) {}
+        if (from < 2) {
+          await m.renameTable(persistentNote, "note_table");
+          await m.createTable(persistentTheme);
+        }
       },
     );
   }
 }
 
 LazyDatabase _openConnection() {
-  // the LazyDatabase util lets us find the right location for the file async.
   return LazyDatabase(() async {
-    // put the database file, called db.sqlite here, into the documents folder
-    // for your app.
     final dbFolder = await getApplicationDocumentsDirectory();
     final file = File(p.join(dbFolder.path, 'db.sqlite'));
 
-    // Also work around limitations on old Android versions
     if (Platform.isAndroid) {
       await applyWorkaroundToOpenSqlite3OnOldAndroidVersions();
     }
 
-    // Make sqlite3 pick a more suitable location for temporary files - the
-    // one from the system may be inaccessible due to sandboxing.
     final cachebase = (await getTemporaryDirectory()).path;
-    // We can't access /tmp on Android, which sqlite3 would try by default.
-    // Explicitly tell it about the correct temporary directory.
+
     sqlite3.tempDirectory = cachebase;
 
     return NativeDatabase.createInBackground(file);

lib/database.g.dart

@@ -3,12 +3,12 @@
 part of 'database.dart';
 
 // ignore_for_file: type=lint
-class $NoteTableTable extends NoteTable
-    with TableInfo<$NoteTableTable, NoteTableData> {
+class $PersistentNoteTable extends PersistentNote
+    with TableInfo<$PersistentNoteTable, PersistentNoteData> {
   @override
   final GeneratedDatabase attachedDatabase;
   final String? _alias;
-  $NoteTableTable(this.attachedDatabase, [this._alias]);
+  $PersistentNoteTable(this.attachedDatabase, [this._alias]);
   static const VerificationMeta _idMeta = const VerificationMeta('id');
   @override
   late final GeneratedColumn<String> id = GeneratedColumn<String>(
@@ -26,9 +26,9 @@ class $NoteTableTable extends NoteTable
   String get aliasedName => _alias ?? actualTableName;
   @override
   String get actualTableName => $name;
-  static const String $name = 'note_table';
+  static const String $name = 'persistent_note';
   @override
-  VerificationContext validateIntegrity(Insertable<NoteTableData> instance,
+  VerificationContext validateIntegrity(Insertable<PersistentNoteData> instance,
       {bool isInserting = false}) {
     final context = VerificationContext();
     final data = instance.toColumns(true);
@@ -49,9 +49,9 @@ class $NoteTableTable extends NoteTable
   @override
   Set<GeneratedColumn> get $primaryKey => const {};
   @override
-  NoteTableData map(Map<String, dynamic> data, {String? tablePrefix}) {
+  PersistentNoteData map(Map<String, dynamic> data, {String? tablePrefix}) {
     final effectivePrefix = tablePrefix != null ? '$tablePrefix.' : '';
-    return NoteTableData(
+    return PersistentNoteData(
       id: attachedDatabase.typeMapping
           .read(DriftSqlType.string, data['${effectivePrefix}id'])!,
       content: attachedDatabase.typeMapping
@@ -60,15 +60,16 @@ class $NoteTableTable extends NoteTable
   }
 
   @override
-  $NoteTableTable createAlias(String alias) {
-    return $NoteTableTable(attachedDatabase, alias);
+  $PersistentNoteTable createAlias(String alias) {
+    return $PersistentNoteTable(attachedDatabase, alias);
   }
 }
 
-class NoteTableData extends DataClass implements Insertable<NoteTableData> {
+class PersistentNoteData extends DataClass
+    implements Insertable<PersistentNoteData> {
   final String id;
   final String content;
-  const NoteTableData({required this.id, required this.content});
+  const PersistentNoteData({required this.id, required this.content});
   @override
   Map<String, Expression> toColumns(bool nullToAbsent) {
     final map = <String, Expression>{};
@@ -77,17 +78,17 @@ class NoteTableData extends DataClass implements Insertable<NoteTableData> {
     return map;
   }
 
-  NoteTableCompanion toCompanion(bool nullToAbsent) {
-    return NoteTableCompanion(
+  PersistentNoteCompanion toCompanion(bool nullToAbsent) {
+    return PersistentNoteCompanion(
       id: Value(id),
       content: Value(content),
     );
   }
 
-  factory NoteTableData.fromJson(Map<String, dynamic> json,
+  factory PersistentNoteData.fromJson(Map<String, dynamic> json,
       {ValueSerializer? serializer}) {
     serializer ??= driftRuntimeOptions.defaultSerializer;
-    return NoteTableData(
+    return PersistentNoteData(
       id: serializer.fromJson<String>(json['id']),
       content: serializer.fromJson<String>(json['content']),
     );
@@ -101,13 +102,14 @@ class NoteTableData extends DataClass implements Insertable<NoteTableData> {
     };
   }
 
-  NoteTableData copyWith({String? id, String? content}) => NoteTableData(
+  PersistentNoteData copyWith({String? id, String? content}) =>
+      PersistentNoteData(
         id: id ?? this.id,
         content: content ?? this.content,
       );
   @override
   String toString() {
-    return (StringBuffer('NoteTableData(')
+    return (StringBuffer('PersistentNoteData(')
           ..write('id: $id, ')
           ..write('content: $content')
           ..write(')'))
@@ -119,27 +121,27 @@ class NoteTableData extends DataClass implements Insertable<NoteTableData> {
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
-      (other is NoteTableData &&
+      (other is PersistentNoteData &&
           other.id == this.id &&
           other.content == this.content);
 }
 
-class NoteTableCompanion extends UpdateCompanion<NoteTableData> {
+class PersistentNoteCompanion extends UpdateCompanion<PersistentNoteData> {
   final Value<String> id;
   final Value<String> content;
   final Value<int> rowid;
-  const NoteTableCompanion({
+  const PersistentNoteCompanion({
     this.id = const Value.absent(),
     this.content = const Value.absent(),
     this.rowid = const Value.absent(),
   });
-  NoteTableCompanion.insert({
+  PersistentNoteCompanion.insert({
     required String id,
     required String content,
     this.rowid = const Value.absent(),
   })  : id = Value(id),
         content = Value(content);
-  static Insertable<NoteTableData> custom({
+  static Insertable<PersistentNoteData> custom({
     Expression<String>? id,
     Expression<String>? content,
     Expression<int>? rowid,
@@ -151,9 +153,9 @@ class NoteTableCompanion extends UpdateCompanion<NoteTableData> {
     });
   }
 
-  NoteTableCompanion copyWith(
+  PersistentNoteCompanion copyWith(
       {Value<String>? id, Value<String>? content, Value<int>? rowid}) {
-    return NoteTableCompanion(
+    return PersistentNoteCompanion(
       id: id ?? this.id,
       content: content ?? this.content,
       rowid: rowid ?? this.rowid,
@@ -177,7 +179,7 @@ class NoteTableCompanion extends UpdateCompanion<NoteTableData> {
 
   @override
   String toString() {
-    return (StringBuffer('NoteTableCompanion(')
+    return (StringBuffer('PersistentNoteCompanion(')
           ..write('id: $id, ')
           ..write('content: $content, ')
           ..write('rowid: $rowid')
@@ -186,12 +188,170 @@ class NoteTableCompanion extends UpdateCompanion<NoteTableData> {
   }
 }
 
+class $PersistentThemeTable extends PersistentTheme
+    with TableInfo<$PersistentThemeTable, PersistentThemeData> {
+  @override
+  final GeneratedDatabase attachedDatabase;
+  final String? _alias;
+  $PersistentThemeTable(this.attachedDatabase, [this._alias]);
+  static const VerificationMeta _brightnessMeta =
+      const VerificationMeta('brightness');
+  @override
+  late final GeneratedColumn<String> brightness = GeneratedColumn<String>(
+      'brightness', aliasedName, false,
+      type: DriftSqlType.string,
+      requiredDuringInsert: false,
+      defaultValue: const Constant("dark"));
+  @override
+  List<GeneratedColumn> get $columns => [brightness];
+  @override
+  String get aliasedName => _alias ?? actualTableName;
+  @override
+  String get actualTableName => $name;
+  static const String $name = 'persistent_theme';
+  @override
+  VerificationContext validateIntegrity(
+      Insertable<PersistentThemeData> instance,
+      {bool isInserting = false}) {
+    final context = VerificationContext();
+    final data = instance.toColumns(true);
+    if (data.containsKey('brightness')) {
+      context.handle(
+          _brightnessMeta,
+          brightness.isAcceptableOrUnknown(
+              data['brightness']!, _brightnessMeta));
+    }
+    return context;
+  }
+
+  @override
+  Set<GeneratedColumn> get $primaryKey => const {};
+  @override
+  PersistentThemeData map(Map<String, dynamic> data, {String? tablePrefix}) {
+    final effectivePrefix = tablePrefix != null ? '$tablePrefix.' : '';
+    return PersistentThemeData(
+      brightness: attachedDatabase.typeMapping
+          .read(DriftSqlType.string, data['${effectivePrefix}brightness'])!,
+    );
+  }
+
+  @override
+  $PersistentThemeTable createAlias(String alias) {
+    return $PersistentThemeTable(attachedDatabase, alias);
+  }
+}
+
+class PersistentThemeData extends DataClass
+    implements Insertable<PersistentThemeData> {
+  final String brightness;
+  const PersistentThemeData({required this.brightness});
+  @override
+  Map<String, Expression> toColumns(bool nullToAbsent) {
+    final map = <String, Expression>{};
+    map['brightness'] = Variable<String>(brightness);
+    return map;
+  }
+
+  PersistentThemeCompanion toCompanion(bool nullToAbsent) {
+    return PersistentThemeCompanion(
+      brightness: Value(brightness),
+    );
+  }
+
+  factory PersistentThemeData.fromJson(Map<String, dynamic> json,
+      {ValueSerializer? serializer}) {
+    serializer ??= driftRuntimeOptions.defaultSerializer;
+    return PersistentThemeData(
+      brightness: serializer.fromJson<String>(json['brightness']),
+    );
+  }
+  @override
+  Map<String, dynamic> toJson({ValueSerializer? serializer}) {
+    serializer ??= driftRuntimeOptions.defaultSerializer;
+    return <String, dynamic>{
+      'brightness': serializer.toJson<String>(brightness),
+    };
+  }
+
+  PersistentThemeData copyWith({String? brightness}) => PersistentThemeData(
+        brightness: brightness ?? this.brightness,
+      );
+  @override
+  String toString() {
+    return (StringBuffer('PersistentThemeData(')
+          ..write('brightness: $brightness')
+          ..write(')'))
+        .toString();
+  }
+
+  @override
+  int get hashCode => brightness.hashCode;
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      (other is PersistentThemeData && other.brightness == this.brightness);
+}
+
+class PersistentThemeCompanion extends UpdateCompanion<PersistentThemeData> {
+  final Value<String> brightness;
+  final Value<int> rowid;
+  const PersistentThemeCompanion({
+    this.brightness = const Value.absent(),
+    this.rowid = const Value.absent(),
+  });
+  PersistentThemeCompanion.insert({
+    this.brightness = const Value.absent(),
+    this.rowid = const Value.absent(),
+  });
+  static Insertable<PersistentThemeData> custom({
+    Expression<String>? brightness,
+    Expression<int>? rowid,
+  }) {
+    return RawValuesInsertable({
+      if (brightness != null) 'brightness': brightness,
+      if (rowid != null) 'rowid': rowid,
+    });
+  }
+
+  PersistentThemeCompanion copyWith(
+      {Value<String>? brightness, Value<int>? rowid}) {
+    return PersistentThemeCompanion(
+      brightness: brightness ?? this.brightness,
+      rowid: rowid ?? this.rowid,
+    );
+  }
+
+  @override
+  Map<String, Expression> toColumns(bool nullToAbsent) {
+    final map = <String, Expression>{};
+    if (brightness.present) {
+      map['brightness'] = Variable<String>(brightness.value);
+    }
+    if (rowid.present) {
+      map['rowid'] = Variable<int>(rowid.value);
+    }
+    return map;
+  }
+
+  @override
+  String toString() {
+    return (StringBuffer('PersistentThemeCompanion(')
+          ..write('brightness: $brightness, ')
+          ..write('rowid: $rowid')
+          ..write(')'))
+        .toString();
+  }
+}
+
 abstract class _$AppDatabase extends GeneratedDatabase {
   _$AppDatabase(QueryExecutor e) : super(e);
-  late final $NoteTableTable noteTable = $NoteTableTable(this);
+  late final $PersistentNoteTable persistentNote = $PersistentNoteTable(this);
+  late final $PersistentThemeTable persistentTheme =
+      $PersistentThemeTable(this);
   @override
   Iterable<TableInfo<Table, Object?>> get allTables =>
       allSchemaEntities.whereType<TableInfo<Table, Object?>>();
   @override
-  List<DatabaseSchemaEntity> get allSchemaEntities => [noteTable];
+  List<DatabaseSchemaEntity> get allSchemaEntities =>
+      [persistentNote, persistentTheme];
 }

lib/main.dart

@@ -1,25 +1,31 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:fnotes/notes_app.dart';
-import 'package:fnotes/persistence_bloc.dart';
+import 'package:fnotes/persisted_brightness.dart';
+import 'package:fnotes/persistent_notes_bloc.dart';
 import 'package:fnotes/theme_bloc.dart';
 
-void main() {
+void main() async {
   WidgetsFlutterBinding.ensureInitialized(); //for drift
-  runApp(const MainApp());
+
+  PersistedBrightness persistedBrightness =
+      await PersistedThemeBloc.getPersistedBrightness();
+
+  runApp(MainApp(brightness: persistedBrightness.toFlutterBrightness()));
 }
 
 class MainApp extends StatelessWidget {
-  const MainApp({super.key});
+  final Brightness brightness;
+  const MainApp({super.key, required this.brightness});
 
   @override
   Widget build(BuildContext context) {
     return MultiBlocProvider(
       providers: [
-        BlocProvider(create: (context) => ThemeBloc()),
-        BlocProvider(create: (context) => PersistenceBloc())
+        BlocProvider(create: (context) => PersistedThemeBloc(brightness)),
+        BlocProvider(create: (context) => PersistentNotesBloc()),
       ],
-      child: BlocBuilder<ThemeBloc, ThemeState>(
+      child: BlocBuilder<PersistedThemeBloc, ThemeState>(
         builder: (context, state) {
           return MaterialApp(
             theme: state.theme,

lib/notes_app.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:fnotes/note.dart';
-import 'package:fnotes/persistence_bloc.dart';
+import 'package:fnotes/persistent_notes_bloc.dart';
 import 'package:fnotes/theme_bloc.dart';
 
 class NotesApp extends StatefulWidget {
@@ -18,7 +18,7 @@ class _NotesAppState extends State<NotesApp> {
 
   @override
   void initState() {
-    context.read<PersistenceBloc>().add(LoadNotesEvent());
+    context.read<PersistentNotesBloc>().add(LoadNotesEvent());
     super.initState();
   }
 
@@ -31,29 +31,29 @@ class _NotesAppState extends State<NotesApp> {
           IconButton(
             icon: const Icon(Icons.light_mode),
             onPressed: () {
-              context.read<ThemeBloc>().add(ThemeEvent());
+              context.read<PersistedThemeBloc>().add(ThemeChangedEvent());
             },
           )
         ],
       ),
-      body: BlocBuilder<ThemeBloc, ThemeState>(
-        builder: (context, state) {
-          return BlocBuilder<PersistenceBloc, PersistenceState>(
-              builder: (context, blocState) {
+      body: BlocBuilder<PersistedThemeBloc, ThemeState>(
+        builder: (context, themeState) {
+          return BlocBuilder<PersistentNotesBloc, PersistentNotesState>(
+              builder: (context, notesState) {
             return ListView.builder(
-              itemCount: blocState.notes.length,
+              itemCount: notesState.notes.length,
               itemBuilder: (context, index) {
                 return Dismissible(
                   onDismissed: (direction) {
-                    context.read<PersistenceBloc>().add(NoteDismissed(
+                    context.read<PersistentNotesBloc>().add(NoteDismissed(
                         Note.withId(
-                            id: blocState.notes[index].id,
-                            content: blocState.notes[index].content)));
+                            id: notesState.notes[index].id,
+                            content: notesState.notes[index].content)));
                   },
-                  key: ValueKey(blocState.notes[index]),
+                  key: ValueKey(notesState.notes[index]),
                   child: Card(
                     elevation: 5,
-                    color: state.theme.colorScheme.primaryContainer,
+                    color: themeState.theme.colorScheme.primaryContainer,
                     child: SizedBox(
                       height: 50,
                       child: Padding(
@@ -61,10 +61,10 @@ class _NotesAppState extends State<NotesApp> {
                         child: Align(
                           alignment: Alignment.centerLeft,
                           child: Text(
-                            blocState.notes[index].content,
+                            notesState.notes[index].content,
                             style: TextStyle(
-                                color:
-                                    state.theme.colorScheme.onPrimaryContainer),
+                                color: themeState
+                                    .theme.colorScheme.onPrimaryContainer),
                           ),
                         ),
                       ),
@@ -83,7 +83,7 @@ class _NotesAppState extends State<NotesApp> {
               (value) {
                 if (value != null && value.isNotEmpty) {
                   context
-                      .read<PersistenceBloc>()
+                      .read<PersistentNotesBloc>()
                       .add(NoteEntered(Note(content: value)));
                 }
               },

lib/persisted_brightness.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+
+class PersistedBrightness {
+  final String brightness;
+
+  PersistedBrightness(this.brightness);
+
+  factory PersistedBrightness.fromFlutterBrightness(Brightness brightness) {
+    var persistedBrightness = "light";
+
+    if (brightness == Brightness.dark) {
+      persistedBrightness = "dark";
+    }
+
+    return PersistedBrightness(persistedBrightness);
+  }
+
+  Brightness toFlutterBrightness() {
+    Brightness flutterBrightness = Brightness.light;
+
+    if (brightness == "dark") {
+      flutterBrightness = Brightness.dark;
+    }
+
+    return flutterBrightness;
+  }
+
+  @override
+  String toString() => brightness;
+
+  PersistedBrightness toOpposite() {
+    var newBrightness = "light";
+
+    if (brightness == "light") {
+      newBrightness = "dark";
+    }
+
+    return PersistedBrightness(newBrightness);
+  }
+}

lib/persistence_bloc.dart

@@ -1,79 +0,0 @@
-import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:fnotes/database.dart';
-import 'package:fnotes/note.dart';
-
-class PersistenceBloc extends Bloc<PersistenceEvent, PersistenceState> {
-  static final database = AppDatabase();
-
-  PersistenceBloc() : super(PersistenceState.init()) {
-    on<StoreNotesEvent>(storeAllNotes);
-    on<LoadNotesEvent>(loadAllNotes);
-    on<NoteEntered>(storeNote);
-    on<NoteDismissed>(deleteNote);
-  }
-
-  void storeAllNotes(PersistenceEvent event, Emitter<PersistenceState> emit) {}
-
-  void loadAllNotes(
-      PersistenceEvent event, Emitter<PersistenceState> emit) async {
-    List<Note> list = [];
-
-    await database.select(database.noteTable).get().then(
-      (value) {
-        list = value.map((row) {
-          return Note.withId(id: row.id, content: row.content);
-        }).toList();
-      },
-    );
-
-    emit(PersistenceState(notes: list));
-  }
-
-  void storeNote(NoteEntered event, Emitter<PersistenceState> emit) async {
-    await database.into(database.noteTable).insert(NoteTableCompanion.insert(
-          id: event.note.id,
-          content: event.note.content,
-        ));
-
-    var newNotes = state.notes;
-    newNotes.add(Note.withId(id: event.note.id, content: event.note.content));
-    emit(PersistenceState(notes: newNotes));
-  }
-
-  void deleteNote(NoteDismissed event, Emitter<PersistenceState> emit) {
-    (database.delete(database.noteTable)
-          ..where((tbl) => tbl.id.equals(event.note.id)))
-        .go();
-
-    var newNotes =
-        state.notes.where((note) => note.id != event.note.id).toList();
-
-    emit(PersistenceState(notes: newNotes));
-  }
-}
-
-class PersistenceEvent {}
-
-class LoadNotesEvent extends PersistenceEvent {}
-
-class StoreNotesEvent extends PersistenceEvent {}
-
-class NoteEntered extends PersistenceEvent {
-  final Note note;
-  NoteEntered(this.note);
-}
-
-class NoteDismissed extends PersistenceEvent {
-  final Note note;
-  NoteDismissed(this.note);
-}
-
-class PersistenceState {
-  List<Note> notes = List.empty(growable: true);
-
-  PersistenceState({required this.notes});
-
-  factory PersistenceState.init() {
-    return PersistenceState(notes: []);
-  }
-}

lib/persistent_notes_bloc.dart

@@ -0,0 +1,78 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:fnotes/database.dart';
+import 'package:fnotes/note.dart';
+
+class PersistentNotesBloc
+    extends Bloc<PersistentNotesEvent, PersistentNotesState> {
+  PersistentNotesBloc() : super(PersistentNotesState.init()) {
+    on<LoadNotesEvent>(loadAllNotes);
+    on<NoteEntered>(storeNote);
+    on<NoteDismissed>(deleteNote);
+  }
+
+  void storeAllNotes(
+      PersistentNotesEvent event, Emitter<PersistentNotesState> emit) {}
+
+  void loadAllNotes(
+      PersistentNotesEvent event, Emitter<PersistentNotesState> emit) async {
+    List<Note> list = [];
+
+    await database.select(database.persistentNote).get().then(
+      (value) {
+        list = value.map((row) {
+          return Note.withId(id: row.id, content: row.content);
+        }).toList();
+      },
+    );
+
+    emit(PersistentNotesState(notes: list));
+  }
+
+  void storeNote(NoteEntered event, Emitter<PersistentNotesState> emit) async {
+    await database
+        .into(database.persistentNote)
+        .insert(PersistentNoteCompanion.insert(
+          id: event.note.id,
+          content: event.note.content,
+        ));
+
+    var newNotes = state.notes;
+    newNotes.add(Note.withId(id: event.note.id, content: event.note.content));
+    emit(PersistentNotesState(notes: newNotes));
+  }
+
+  void deleteNote(NoteDismissed event, Emitter<PersistentNotesState> emit) {
+    (database.delete(database.persistentNote)
+          ..where((tbl) => tbl.id.equals(event.note.id)))
+        .go();
+
+    var newNotes =
+        state.notes.where((note) => note.id != event.note.id).toList();
+
+    emit(PersistentNotesState(notes: newNotes));
+  }
+}
+
+class PersistentNotesEvent {}
+
+class LoadNotesEvent extends PersistentNotesEvent {}
+
+class NoteEntered extends PersistentNotesEvent {
+  final Note note;
+  NoteEntered(this.note);
+}
+
+class NoteDismissed extends PersistentNotesEvent {
+  final Note note;
+  NoteDismissed(this.note);
+}
+
+class PersistentNotesState {
+  List<Note> notes = List.empty(growable: true);
+
+  PersistentNotesState({required this.notes});
+
+  factory PersistentNotesState.init() {
+    return PersistentNotesState(notes: []);
+  }
+}

lib/theme_bloc.dart

@@ -1,33 +1,78 @@
+import 'package:drift/drift.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:fnotes/database.dart';
+import 'package:fnotes/persisted_brightness.dart';
 
-class ThemeBloc extends Bloc<ThemeEvent, ThemeState> {
-  ThemeBloc() : super(ThemeState.init()) {
-    on<ThemeEvent>(switchTheme);
+class PersistedThemeBloc extends Bloc<ThemeEvent, ThemeState> {
+  PersistedThemeBloc(Brightness brightness)
+      : super(ThemeState.withBrightness(brightness)) {
+    on<ThemeChangedEvent>(switchTheme);
+    on<LoadThemeEvent>(loadTheme);
   }
 
-  void switchTheme(ThemeEvent event, Emitter<ThemeState> emit) {
-    if (state.theme.brightness == Brightness.light) {
-      emit(ThemeState.withBrightness(Brightness.dark));
-    } else {
-      emit(ThemeState.withBrightness(Brightness.light));
+  void switchTheme(ThemeChangedEvent event, Emitter<ThemeState> emit) async {
+    await database.delete(database.persistentTheme).go();
+
+    var newBrightness =
+        PersistedBrightness.fromFlutterBrightness(state.theme.brightness)
+            .toOpposite();
+
+    await database
+        .into(database.persistentTheme)
+        .insert(PersistentThemeCompanion.insert(
+          brightness: Value(newBrightness.toString()),
+        ));
+
+    emit(ThemeState.withBrightness(newBrightness.toFlutterBrightness()));
   }
+
+  void loadTheme(LoadThemeEvent event, Emitter<ThemeState> emit) async {
+    PersistedBrightness persistedBrightness = await getPersistedBrightness();
+    emit(ThemeState.withBrightness(persistedBrightness.toFlutterBrightness()));
+  }
+
+  static Future<PersistedBrightness> getPersistedBrightness() async {
+    PersistedBrightness persistedBrightness = PersistedBrightness("light");
+
+    await database.select(database.persistentTheme).get().then(
+      (value) {
+        var brightnessIter = value.map((row) {
+          return row.brightness;
+        });
+
+        if (brightnessIter.isNotEmpty) {
+          persistedBrightness = PersistedBrightness(brightnessIter.first);
+        }
+      },
+    );
+    return persistedBrightness;
   }
 }
 
 class ThemeEvent {}
 
+class LoadThemeEvent extends ThemeEvent {}
+
+class ThemeChangedEvent extends ThemeEvent {}
+
 class ThemeState {
   final ThemeData theme;
-  static final ThemeData initTheme = ThemeData(
-    colorScheme: ColorScheme.fromSeed(
-        seedColor: Colors.lightBlue, brightness: Brightness.light),
-  );
 
   ThemeState({required this.theme});
 
-  factory ThemeState.init() {
-    return ThemeState(theme: initTheme);
+  static Future<ThemeState> fetchAndConstructInitState() async {
+    PersistedBrightness persistedBrightness = PersistedBrightness('light');
+    await database.select(database.persistentTheme).get().then(
+      (value) {
+        var brightnessIter = value.map((row) {
+          return row.brightness;
+        });
+        persistedBrightness = PersistedBrightness(brightnessIter.first);
+      },
+    );
+
+    return ThemeState.withBrightness(persistedBrightness.toFlutterBrightness());
   }
 
   factory ThemeState.withBrightness(Brightness brightness) {

pubspec.lock

@@ -513,7 +513,7 @@ packages:
     source: hosted
     version: "1.5.1"
   provider:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: provider
       sha256: c8a055ee5ce3fd98d6fc872478b03823ffdb448699c6ebdbbc71d59b596fd48c

pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   sqlite3_flutter_libs: ^0.5.20
   uuid: ^4.3.3
   sqlite3: ^2.4.0 
+  provider: ^6.1.2
 
 dev_dependencies:
   flutter_test: