feat: add local database persistence

lib/src/app/focus_seed_app.dart

@@ -6,6 +6,7 @@ import 'package:flutter_localizations/flutter_localizations.dart';
 
 import '../core/ambience.dart';
 import '../data/app_preferences_store.dart';
+import '../data/focus_seed_store.dart';
 import '../features/shell/focus_seed_home.dart';
 import '../l10n/generated/app_localizations.dart';
 import '../models/appearance_preference.dart';
@@ -18,9 +19,10 @@ Locale focusSeedDefaultLocale({bool isRelease = kReleaseMode}) {
 }
 
 class FocusSeedApp extends StatefulWidget {
-  const FocusSeedApp({this.locale, super.key});
+  const FocusSeedApp({this.locale, this.focusSeedStore, super.key});
 
   final Locale? locale;
+  final FocusSeedStore? focusSeedStore;
 
   @override
   State<FocusSeedApp> createState() => _FocusSeedAppState();
@@ -114,6 +116,7 @@ class _FocusSeedAppState extends State<FocusSeedApp>
       ],
       supportedLocales: AppLocalizations.supportedLocales,
       home: FocusSeedHome(
+        focusSeedStore: widget.focusSeedStore,
         appearance: _appearance,
         onAppearanceChanged: _setAppearance,
         language: _language,

lib/src/data/focus_seed_store.dart

@@ -1,33 +1,245 @@
 import 'dart:convert';
 
+import 'package:drift/drift.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
-import '../core/json_utils.dart';
+import '../core/date_keys.dart' as date_keys;
 import '../models/app_state.dart';
+import '../models/focus_session.dart';
+import '../models/habit.dart';
+import '../models/mood.dart';
+import '../models/reflection_entry.dart';
+import 'local/focus_seed_database.dart';
 
 class FocusSeedStore {
-  static const _storageKey = 'focus_seed_state_v1';
+  FocusSeedStore({FocusSeedDatabase? database})
+    : _database = database ?? FocusSeedDatabase();
+
+  static const _legacyStorageKey = 'focus_seed_state_v1';
+  static const _legacyMigrationKey = 'focus_seed_state_v1_migrated_to_sqlite';
+
+  final FocusSeedDatabase _database;
 
   Future<AppState> load({List<String>? defaultHabitTitles}) async {
-    final prefs = await SharedPreferences.getInstance();
+    await _migrateLegacyJsonIfNeeded();
-    final raw = prefs.getString(_storageKey);
+    final snapshot = await _readSnapshot();
-    if (raw == null || raw.isEmpty) {
+    if (!snapshot.isFreshStart) {
-      return AppState.starter(defaultHabitTitles: defaultHabitTitles);
+      return snapshot;
-    }
-    try {
-      return AppState.fromJson(jsonDecode(raw) as Map<String, dynamic>);
-    } on Object {
-      return AppState.starter(defaultHabitTitles: defaultHabitTitles);
     }
+
+    final starter = AppState.starter(defaultHabitTitles: defaultHabitTitles);
+    await save(starter);
+    return starter;
   }
 
   Future<void> save(AppState state) async {
-    final prefs = await SharedPreferences.getInstance();
+    await _database.transaction(() async {
-    await prefs.setString(_storageKey, prettyJson(state.toJson()));
+      await _database.delete(_database.habitLogRows).go();
+      await _database.delete(_database.reflectionRows).go();
+      await _database.delete(_database.focusSessionRows).go();
+      await _database.delete(_database.habitRows).go();
+      await _database.delete(_database.dailyIntentionRows).go();
+
+      if (state.anchor.trim().isNotEmpty) {
+        final now = DateTime.now();
+        await _database
+            .into(_database.dailyIntentionRows)
+            .insert(
+              DailyIntentionRowsCompanion.insert(
+                dateKey: state.anchorDateKey,
+                intentionText: state.anchor,
+                createdAt: now,
+                updatedAt: now,
+              ),
+            );
+      }
+
+      for (final (index, habit) in state.habits.indexed) {
+        await _database
+            .into(_database.habitRows)
+            .insert(
+              HabitRowsCompanion.insert(
+                id: habit.id,
+                title: habit.title,
+                sortOrder: index,
+                createdAt: habit.createdAt,
+              ),
+            );
+        for (final completedDate in habit.completedDates) {
+          await _database
+              .into(_database.habitLogRows)
+              .insert(
+                HabitLogRowsCompanion.insert(
+                  id: '${habit.id}-$completedDate',
+                  habitId: habit.id,
+                  dateKey: completedDate,
+                  completedAt: DateTime.parse('$completedDate 12:00:00'),
+                ),
+              );
+        }
+      }
+
+      for (final session in state.sessions) {
+        await _database
+            .into(_database.focusSessionRows)
+            .insert(_focusSessionCompanion(session));
+      }
+
+      for (final reflection in state.reflections) {
+        await _database
+            .into(_database.reflectionRows)
+            .insert(
+              ReflectionRowsCompanion.insert(
+                id: reflection.id,
+                dateKey: reflection.dateKey,
+                mood: reflection.mood.name,
+                note: reflection.note,
+                createdAt: reflection.createdAt,
+                updatedAt: reflection.createdAt,
+              ),
+            );
+      }
+    });
+
+    final preferences = await SharedPreferences.getInstance();
+    await preferences.setBool(_legacyMigrationKey, true);
+    await preferences.remove(_legacyStorageKey);
   }
 
   Future<void> clear() async {
-    final prefs = await SharedPreferences.getInstance();
+    await _database.clearProductData();
-    await prefs.remove(_storageKey);
+    final preferences = await SharedPreferences.getInstance();
+    await preferences.remove(_legacyStorageKey);
+    await preferences.setBool(_legacyMigrationKey, true);
+  }
+
+  Future<AppState> _readSnapshot() async {
+    final intentionRows =
+        await (_database.select(_database.dailyIntentionRows)
+              ..orderBy([(row) => OrderingTerm.desc(row.dateKey)])
+              ..limit(1))
+            .get();
+    final latestIntention = intentionRows.firstOrNull;
+    final habitRows =
+        await (_database.select(_database.habitRows)
+              ..where((row) => row.archivedAt.isNull())
+              ..orderBy([
+                (row) => OrderingTerm.asc(row.sortOrder),
+                (row) => OrderingTerm.asc(row.createdAt),
+              ]))
+            .get();
+    final habitLogRows =
+        await (_database.select(_database.habitLogRows)
+          ..orderBy([(row) => OrderingTerm.asc(row.dateKey)])).get();
+    final focusSessionRows =
+        await (_database.select(_database.focusSessionRows)
+          ..orderBy([(row) => OrderingTerm.asc(row.endedAt)])).get();
+    final reflectionRows =
+        await (_database.select(_database.reflectionRows)
+          ..orderBy([(row) => OrderingTerm.asc(row.createdAt)])).get();
+
+    final completedDatesByHabit = <String, Set<String>>{};
+    for (final log in habitLogRows) {
+      completedDatesByHabit.putIfAbsent(log.habitId, () => {}).add(log.dateKey);
+    }
+
+    return AppState(
+      anchor: latestIntention?.intentionText ?? '',
+      anchorDateKey: latestIntention?.dateKey ?? date_keys.todayKey(),
+      habits: [
+        for (final habit in habitRows)
+          Habit(
+            id: habit.id,
+            title: habit.title,
+            createdAt: habit.createdAt,
+            completedDates: completedDatesByHabit[habit.id] ?? const {},
+          ),
+      ],
+      sessions: [
+        for (final session in focusSessionRows)
+          FocusSession(
+            id: session.id,
+            minutes: session.plannedMinutes,
+            completedAt: session.endedAt,
+          ),
+      ],
+      reflections: [
+        for (final reflection in reflectionRows)
+          ReflectionEntry(
+            id: reflection.id,
+            dateKey: reflection.dateKey,
+            note: reflection.note,
+            mood: Mood.values.firstWhere(
+              (mood) => mood.name == reflection.mood,
+              orElse: () => Mood.clear,
+            ),
+            createdAt: reflection.createdAt,
+          ),
+      ],
+    );
+  }
+
+  Future<void> _migrateLegacyJsonIfNeeded() async {
+    final preferences = await SharedPreferences.getInstance();
+    if (preferences.getBool(_legacyMigrationKey) ?? false) {
+      return;
+    }
+    if (await _hasDatabaseContent()) {
+      await preferences.setBool(_legacyMigrationKey, true);
+      return;
+    }
+
+    final raw = preferences.getString(_legacyStorageKey);
+    if (raw == null || raw.isEmpty) {
+      await preferences.setBool(_legacyMigrationKey, true);
+      return;
+    }
+
+    try {
+      final legacyState = AppState.fromJson(
+        jsonDecode(raw) as Map<String, dynamic>,
+      );
+      await save(legacyState);
+    } on Object {
+      await preferences.setBool(_legacyMigrationKey, true);
+    }
+  }
+
+  Future<bool> _hasDatabaseContent() async {
+    final intention =
+        await (_database.select(_database.dailyIntentionRows)
+          ..limit(1)).getSingleOrNull();
+    if (intention != null) {
+      return true;
+    }
+    final habit =
+        await (_database.select(_database.habitRows)
+          ..limit(1)).getSingleOrNull();
+    if (habit != null) {
+      return true;
+    }
+    final session =
+        await (_database.select(_database.focusSessionRows)
+          ..limit(1)).getSingleOrNull();
+    if (session != null) {
+      return true;
+    }
+    final reflection =
+        await (_database.select(_database.reflectionRows)
+          ..limit(1)).getSingleOrNull();
+    return reflection != null;
+  }
+
+  FocusSessionRowsCompanion _focusSessionCompanion(FocusSession session) {
+    final completedAt = session.completedAt;
+    return FocusSessionRowsCompanion.insert(
+      id: session.id,
+      dateKey: date_keys.dateKey(completedAt),
+      plannedMinutes: session.minutes,
+      actualSeconds: session.minutes * 60,
+      startedAt: completedAt.subtract(Duration(minutes: session.minutes)),
+      endedAt: completedAt,
+      status: 'completed',
+    );
   }
 }

lib/src/data/local/focus_seed_database.dart

@@ -0,0 +1,126 @@
+import 'dart:io';
+
+import 'package:drift/drift.dart';
+import 'package:drift/native.dart';
+import 'package:path/path.dart' as path;
+import 'package:path_provider/path_provider.dart';
+
+part 'focus_seed_database.g.dart';
+
+class DailyIntentionRows extends Table {
+  @override
+  String get tableName => 'daily_intentions';
+
+  TextColumn get dateKey => text()();
+  TextColumn get intentionText => text().named('text')();
+  DateTimeColumn get createdAt => dateTime()();
+  DateTimeColumn get updatedAt => dateTime()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {dateKey};
+}
+
+class FocusSessionRows extends Table {
+  @override
+  String get tableName => 'focus_sessions';
+
+  TextColumn get id => text()();
+  TextColumn get dateKey => text()();
+  IntColumn get plannedMinutes => integer()();
+  IntColumn get actualSeconds => integer()();
+  DateTimeColumn get startedAt => dateTime()();
+  DateTimeColumn get endedAt => dateTime()();
+  TextColumn get status => text()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}
+
+class HabitRows extends Table {
+  @override
+  String get tableName => 'habits';
+
+  TextColumn get id => text()();
+  TextColumn get title => text()();
+  IntColumn get sortOrder => integer()();
+  DateTimeColumn get createdAt => dateTime()();
+  DateTimeColumn get archivedAt => dateTime().nullable()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}
+
+class HabitLogRows extends Table {
+  @override
+  String get tableName => 'habit_logs';
+
+  TextColumn get id => text()();
+  TextColumn get habitId => text()();
+  TextColumn get dateKey => text()();
+  DateTimeColumn get completedAt => dateTime()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}
+
+class ReflectionRows extends Table {
+  @override
+  String get tableName => 'reflections';
+
+  TextColumn get id => text()();
+  TextColumn get dateKey => text()();
+  TextColumn get mood => text()();
+  TextColumn get note => text()();
+  DateTimeColumn get createdAt => dateTime()();
+  DateTimeColumn get updatedAt => dateTime()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {id};
+}
+
+class AppSettingRows extends Table {
+  @override
+  String get tableName => 'app_settings';
+
+  TextColumn get key => text()();
+  TextColumn get value => text()();
+
+  @override
+  Set<Column<Object>> get primaryKey => {key};
+}
+
+@DriftDatabase(
+  tables: [
+    DailyIntentionRows,
+    FocusSessionRows,
+    HabitRows,
+    HabitLogRows,
+    ReflectionRows,
+    AppSettingRows,
+  ],
+)
+class FocusSeedDatabase extends _$FocusSeedDatabase {
+  FocusSeedDatabase([QueryExecutor? executor])
+    : super(executor ?? _openConnection());
+
+  @override
+  int get schemaVersion => 1;
+
+  Future<void> clearProductData() async {
+    await transaction(() async {
+      await delete(habitLogRows).go();
+      await delete(reflectionRows).go();
+      await delete(focusSessionRows).go();
+      await delete(habitRows).go();
+      await delete(dailyIntentionRows).go();
+    });
+  }
+}
+
+LazyDatabase _openConnection() {
+  return LazyDatabase(() async {
+    final directory = await getApplicationDocumentsDirectory();
+    final file = File(path.join(directory.path, 'focus_seed.sqlite'));
+    return NativeDatabase.createInBackground(file);
+  });
+}

lib/src/features/shell/focus_seed_home.dart

@@ -3,6 +3,7 @@ import 'package:flutter/services.dart';
 
 import '../../application/focus_seed_controller.dart';
 import '../../application/focus_timer_controller.dart';
+import '../../data/focus_seed_store.dart';
 import '../../l10n/l10n.dart';
 import '../../models/appearance_preference.dart';
 import '../../models/language_preference.dart';
@@ -18,6 +19,7 @@ class FocusSeedHome extends StatefulWidget {
     required this.language,
     required this.showLanguageTools,
     required this.onLanguageChanged,
+    this.focusSeedStore,
     super.key,
   });
 
@@ -26,6 +28,7 @@ class FocusSeedHome extends StatefulWidget {
   final LanguagePreference language;
   final bool showLanguageTools;
   final ValueChanged<LanguagePreference> onLanguageChanged;
+  final FocusSeedStore? focusSeedStore;
 
   @override
   State<FocusSeedHome> createState() => _FocusSeedHomeState();
@@ -43,6 +46,7 @@ class _FocusSeedHomeState extends State<FocusSeedHome> {
       return;
     }
     _controller = FocusSeedController(
+      store: widget.focusSeedStore,
       defaultHabitTitles: localizedStarterHabits(context.l10n),
     );
     _timerController = FocusTimerController(

lib/src/models/app_state.dart

@@ -17,7 +17,11 @@ class AppState {
   final List<FocusSession> sessions;
   final List<ReflectionEntry> reflections;
 
-  bool get isFreshStart => habits.isEmpty && sessions.isEmpty && anchor.isEmpty;
+  bool get isFreshStart =>
+      habits.isEmpty &&
+      sessions.isEmpty &&
+      reflections.isEmpty &&
+      anchor.isEmpty;
 
   String activeAnchor(String dateKey) {
     return anchorDateKey == dateKey ? anchor : '';

pubspec.lock

@@ -1,6 +1,30 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: f0bb5d1648339c8308cc0b9838d8456b3cfe5c91f9dc1a735b4d003269e5da9a
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "88.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "0b7b9c329d2879f8f05d6c05b32ee9ec025f39b077864bdb5ac9a7b63418a98f"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "8.1.1"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: d0481093c50b1da8910eb0bb301626d4d8eb7284aa739614d2b394ee09e3ea04
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.7.0"
   async:
     dependency: transitive
     description:
@@ -17,6 +41,54 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.2"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      sha256: a156715e7cd728130c592f30552575908aae5b100005fbc1f0fb16b3c03a3d10
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.0.6"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      sha256: "4070d2a59f8eec34c97c86ceb44403834899075f66e8a9d59706f8e7834f6f71"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.0"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      sha256: bf05f6e12cfea92d3c09308d7bcdab1906cd8a179b023269eed00c071004b957
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.1.1"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      sha256: "1523ce62448ebac2c15a8ba5fbad8acac169788658a7dd2a1c2d9c2a9318b9a6"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.15.0"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      sha256: "376e3dd27b51ea877c28d525560790aee2e6fbb5f20e2f85d5081027d94e2100"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      sha256: "34e4067d30ce212937df995f03b69992eea683539ceeac7f679a1f1eba055b56"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "8.12.6"
   characters:
     dependency: transitive
     description:
@@ -25,6 +97,30 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.4.0"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      sha256: fb0f1107cac15a5ea6ef0a6ef71a807b9e4267c713bb93e00e92d737cc8dbd8a
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.4.0"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: feb6bed21949061731a7a75fc5d2aa727cf160b91af9a3e464c5e3a32e28b5ff
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.3"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      sha256: ff6785f7e9e3c38ac98b2fb035701789de90154024a75b6cb926445e83197d1c
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.4.2"
   clock:
     dependency: transitive
     description:
@@ -41,6 +137,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.7"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -49,6 +161,30 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.0.8"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      sha256: c87dfe3d56f183ffe9106a18aebc6db431fc7c98c31a54b952a77f3d54a85697
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.2"
+  drift:
+    dependency: "direct main"
+    description:
+      name: drift
+      sha256: "970cd188fddb111b26ea6a9b07a62bf5c2432d74147b8122c67044ae3b97e99e"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.31.0"
+  drift_dev:
+    dependency: "direct dev"
+    description:
+      name: drift_dev
+      sha256: "917184b2fb867b70a548a83bf0d36268423b38d39968c06cce4905683da49587"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.31.0"
   fake_async:
     dependency: transitive
     description:
@@ -73,6 +209,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "7.0.1"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: b6dc7065e46c974bc7c5f143080a6764ec7a4be6da1285ececdc37be96de53be
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -101,6 +245,38 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.3"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      sha256: "741bbf84165310a68ff28fe9e727332eef1407342fca52759cb21ad8177bb8d0"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.3.2"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: aa6199f908078bb1c5efb8d8638d4ae191aac11b311132c3ef48ce352fb52ef8
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.2.2"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.1.2"
   intl:
     dependency: "direct main"
     description:
@@ -109,6 +285,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.19.0"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.0.5"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: "1ce844379ca14835a50d2f019a3099f419082cfdd231cd86a142af94dd5c6bb1"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.9.0"
   leak_tracker:
     dependency: transitive
     description:
@@ -141,6 +333,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "5.1.1"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.0"
   matcher:
     dependency: transitive
     description:
@@ -165,14 +365,54 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.16.0"
-  path:
+  mime:
     dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
+  path:
+    dependency: "direct main"
     description:
       name: path
       sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.9.1"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.5"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      sha256: "3b4c1fc3aa55ddc9cd4aa6759984330d5c8e66aa7702a6223c61540dc6380c37"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.19"
+  path_provider_foundation:
+    dependency: transitive
+    description:
+      name: path_provider_foundation
+      sha256: "16eef174aacb07e09c351502740fa6254c165757638eba1e9116b0a781201bbd"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.4.2"
   path_provider_linux:
     dependency: transitive
     description:
@@ -213,6 +453,38 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.8"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "978783255c543aa3586a1b3c21f6e9d720eb315376a915872c61ef8b5c20177d"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.5.2"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      sha256: "0560ba233314abbed0a48a2956f7f022cce7c3e1e73df540277da7544cad4082"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.5.0"
+  recase:
+    dependency: transitive
+    description:
+      name: recase
+      sha256: e4eb4ec2dcdee52dcf99cb4ceabaffc631d7424ee55e56f280bc039737f89213
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.1.0"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -269,11 +541,35 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.4.1"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.4.2"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "3632775c8e90d6c9712f883e633716432a27758216dfb61bd86a8321c0580925"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.0"
   sky_engine:
     dependency: transitive
     description: flutter
     source: sdk
     version: "0.0.0"
+  source_gen:
+    dependency: transitive
+    description:
+      name: source_gen
+      sha256: "1d562a3c1f713904ebbed50d2760217fd8a51ca170ac4b05b0db490699dbac17"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.2.0"
   source_span:
     dependency: transitive
     description:
@@ -282,6 +578,30 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.10.1"
+  sqlite3:
+    dependency: transitive
+    description:
+      name: sqlite3
+      sha256: "3145bd74dcdb4fd6f5c6dda4d4e4490a8087d7f286a14dee5d37087290f0f8a2"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.9.4"
+  sqlite3_flutter_libs:
+    dependency: "direct main"
+    description:
+      name: sqlite3_flutter_libs
+      sha256: eeb9e3a45207649076b808f8a5a74d68770d0b7f26ccef6d5f43106eee5375ad
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.5.42"
+  sqlparser:
+    dependency: transitive
+    description:
+      name: sqlparser
+      sha256: "337e9997f7141ffdd054259128553c348635fa318f7ca492f07a4ab76f850d19"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.43.1"
   stack_trace:
     dependency: transitive
     description:
@@ -298,6 +618,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.4"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      sha256: ad47125e588cfd37a9a7f86c7d6356dde8dfe89d071d293f80ca9e9273a33871
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.1"
   string_scanner:
     dependency: transitive
     description:
@@ -322,6 +650,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.7.4"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.4.0"
   vector_math:
     dependency: transitive
     description:
@@ -338,6 +674,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "14.3.1"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.1"
   web:
     dependency: transitive
     description:
@@ -346,6 +690,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.1"
+  web_socket:
+    dependency: transitive
+    description:
+      name: web_socket
+      sha256: "34d64019aa8e36bf9842ac014bb5d2f5586ca73df5e4d9bf5c936975cae6982c"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.0.1"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d645757fb0f4773d602444000a8131ff5d48c9e47adfe9772652dd1a4f2d45c8
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.3"
   xdg_directories:
     dependency: transitive
     description:
@@ -354,6 +714,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.3"
 sdks:
   dart: ">=3.7.2 <4.0.0"
   flutter: ">=3.29.0"

pubspec.yaml

@@ -38,10 +38,16 @@ dependencies:
   cupertino_icons: ^1.0.8
   intl: any
   shared_preferences: ^2.5.3
+  drift: ^2.31.0
+  sqlite3_flutter_libs: ^0.5.42
+  path_provider: ^2.1.5
+  path: ^1.9.1
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  build_runner: ^2.10.4
+  drift_dev: ^2.31.0
 
   # The "flutter_lints" package below contains a set of recommended lints to
   # encourage good coding practices. The lint set provided by the package is

test/focus_seed_store_test.dart

@@ -0,0 +1,115 @@
+import 'dart:convert';
+
+import 'package:drift/native.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:focus_seed/src/data/focus_seed_store.dart';
+import 'package:focus_seed/src/data/local/focus_seed_database.dart';
+import 'package:focus_seed/src/models/app_state.dart';
+import 'package:focus_seed/src/models/focus_session.dart';
+import 'package:focus_seed/src/models/habit.dart';
+import 'package:focus_seed/src/models/mood.dart';
+import 'package:focus_seed/src/models/reflection_entry.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  test('new installs seed localized starter habits into sqlite', () async {
+    final database = FocusSeedDatabase(NativeDatabase.memory());
+    addTearDown(database.close);
+    final store = FocusSeedStore(database: database);
+
+    final state = await store.load(
+      defaultHabitTitles: const ['Plan', 'Focus', 'Reflect'],
+    );
+
+    expect(state.anchor, isEmpty);
+    expect(state.habits.map((habit) => habit.title), [
+      'Plan',
+      'Focus',
+      'Reflect',
+    ]);
+  });
+
+  test(
+    'sqlite snapshot round-trips focus, habit, and reflection data',
+    () async {
+      final database = FocusSeedDatabase(NativeDatabase.memory());
+      addTearDown(database.close);
+      final store = FocusSeedStore(database: database);
+      final now = DateTime(2026, 6, 12, 10, 30);
+      final state = AppState(
+        anchor: 'Ship the local database',
+        anchorDateKey: '2026-06-12',
+        habits: [
+          Habit(
+            id: 'habit-1',
+            title: 'Review the plan',
+            createdAt: now.subtract(const Duration(days: 2)),
+            completedDates: const {'2026-06-11', '2026-06-12'},
+          ),
+        ],
+        sessions: [
+          FocusSession(id: 'session-1', minutes: 25, completedAt: now),
+        ],
+        reflections: [
+          ReflectionEntry(
+            id: 'reflection-1',
+            dateKey: '2026-06-12',
+            note: 'Small scope kept it clean.',
+            mood: Mood.clear,
+            createdAt: now.add(const Duration(minutes: 1)),
+          ),
+        ],
+      );
+
+      await store.save(state);
+      final loaded = await store.load();
+
+      expect(loaded.anchor, 'Ship the local database');
+      expect(loaded.anchorDateKey, '2026-06-12');
+      expect(loaded.habits.single.completedDates, {'2026-06-11', '2026-06-12'});
+      expect(loaded.sessions.single.minutes, 25);
+      expect(loaded.reflections.single.note, 'Small scope kept it clean.');
+    },
+  );
+
+  test('legacy shared preferences json migrates once and is removed', () async {
+    final legacyState = AppState(
+      anchor: 'Migrate safely',
+      anchorDateKey: '2026-06-12',
+      habits: [
+        Habit(
+          id: 'habit-legacy',
+          title: 'Keep existing data',
+          createdAt: DateTime(2026, 6, 10),
+          completedDates: const {'2026-06-12'},
+        ),
+      ],
+      sessions: [
+        FocusSession(
+          id: 'session-legacy',
+          minutes: 15,
+          completedAt: DateTime(2026, 6, 12, 8),
+        ),
+      ],
+      reflections: const [],
+    );
+    SharedPreferences.setMockInitialValues({
+      'focus_seed_state_v1': jsonEncode(legacyState.toJson()),
+    });
+    final database = FocusSeedDatabase(NativeDatabase.memory());
+    addTearDown(database.close);
+    final store = FocusSeedStore(database: database);
+
+    final migrated = await store.load();
+    final preferences = await SharedPreferences.getInstance();
+
+    expect(migrated.anchor, 'Migrate safely');
+    expect(migrated.habits.single.title, 'Keep existing data');
+    expect(migrated.sessions.single.minutes, 15);
+    expect(preferences.getString('focus_seed_state_v1'), isNull);
+  });
+}

test/widget_test.dart

@@ -1,6 +1,9 @@
+import 'package:drift/native.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:focus_seed/src/app/focus_seed_app.dart';
+import 'package:focus_seed/src/data/focus_seed_store.dart';
+import 'package:focus_seed/src/data/local/focus_seed_database.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
@@ -14,8 +17,7 @@ void main() {
   });
 
   testWidgets('Today guides the user from intention to focus', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
-    await tester.pumpAndSettle();
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.text("TODAY'S INTENTION"), findsOneWidget);
@@ -35,8 +37,7 @@ void main() {
   });
 
   testWidgets('bottom navigation exposes Journey and Me', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
-    await tester.pumpAndSettle();
 
     await tester.tap(find.text('Journey'));
     await tester.pumpAndSettle();
@@ -60,8 +61,7 @@ void main() {
       tester.platformDispatcher.clearTextScaleFactorTestValue();
     });
 
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
-    await tester.pumpAndSettle();
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.byType(Scrollable), findsWidgets);
@@ -69,8 +69,7 @@ void main() {
   });
 
   testWidgets('development default uses concise Chinese copy', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp());
+    await pumpFocusSeedApp(tester);
-    await tester.pumpAndSettle();
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.text('\u4eca\u65e5\u76ee\u6807'), findsOneWidget);
@@ -88,8 +87,7 @@ void main() {
   testWidgets('development language switch changes the active locale', (
     tester,
   ) async {
-    await tester.pumpWidget(const FocusSeedApp());
+    await pumpFocusSeedApp(tester);
-    await tester.pumpAndSettle();
 
     await tester.tap(find.text('\u6211\u7684'));
     await tester.pumpAndSettle();
@@ -102,3 +100,15 @@ void main() {
     expect(find.text('Language'), findsOneWidget);
   });
 }
+
+Future<void> pumpFocusSeedApp(WidgetTester tester, {Locale? locale}) async {
+  final database = FocusSeedDatabase(NativeDatabase.memory());
+  addTearDown(database.close);
+  await tester.pumpWidget(
+    FocusSeedApp(
+      locale: locale,
+      focusSeedStore: FocusSeedStore(database: database),
+    ),
+  );
+  await tester.pumpAndSettle();
+}