Implement whole ass "backend"

lib/db.dart

@@ -0,0 +1,86 @@
+import 'dart:io' show Platform, Directory;
+import 'package:flutter/material.dart';
+import 'package:path/path.dart' as path;
+import 'package:sqflite_common_ffi/sqflite_ffi.dart';
+
+const settingsDir = '.journaler';
+const dbFileName = 'journaler.db';
+
+class DB {
+  static late Database db;
+
+  static const String _schema = '''
+CREATE TABLE IF NOT EXISTS notes (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  date TEXT DEFAULT CURRENT_TIMESTAMP,
+  content TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_notes_date ON notes (date);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_notes_date_unique ON notes (date);
+-- Todos are "static", we are only interested in the latest entry
+-- ie. they're not really a list but instead a string
+-- But we will also keep a history of all todos
+-- Because we might as well
+CREATE TABLE IF NOT EXISTS todos (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  date TEXT DEFAULT CURRENT_TIMESTAMP,
+  content TEXT NOT NULL
+);
+CREATE INDEX IF NOT EXISTS idx_todos_date ON todos (date);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_todos_date_unique ON todos (date);
+''';
+
+  static Future<String> _getDatabasePath() async {
+    debugPrint('Attempting to get database path...');
+    if (Platform.isWindows || Platform.isLinux) {
+      // Get user's home directory
+      final home =
+          Platform.environment['HOME'] ?? Platform.environment['USERPROFILE'];
+      if (home == null) {
+        throw Exception('Could not find home directory');
+      }
+      debugPrint('Home directory found: home');
+
+      final dbDir = Directory(path.join(home, settingsDir));
+      if (!await dbDir.exists()) {
+        await dbDir.create(recursive: true);
+        debugPrint('$settingsDir directory created');
+      } else {
+        debugPrint('$settingsDir directory already exists');
+      }
+
+      return path.join(dbDir.path, dbFileName);
+    } else {
+      // Default path for other platforms
+      final databasesPath = await databaseFactoryFfi.getDatabasesPath();
+      debugPrint('Using default databases path: databasesPath');
+      return path.join(databasesPath, dbFileName);
+    }
+  }
+
+  static Future<void> init() async {
+    debugPrint('Starting database initialization...');
+    sqfliteFfiInit();
+
+    final dbPath = await _getDatabasePath();
+    debugPrint('Database path: dbPath');
+
+    try {
+      db = await databaseFactoryFfi.openDatabase(
+        dbPath,
+        options: OpenDatabaseOptions(
+          version: 1,
+          onCreate: (db, version) async {
+            debugPrint('Creating database schema...');
+            await db.execute(_schema);
+            debugPrint('Database schema created successfully');
+          },
+        ),
+      );
+      debugPrint('Database opened and initialized');
+    } catch (e) {
+      debugPrint('Failed to initialize database: e');
+      rethrow;
+    }
+  }
+}

lib/main.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:journaler/db.dart';
+import 'package:journaler/notes.dart';
 import 'package:system_tray/system_tray.dart';
 import 'package:window_manager/window_manager.dart';
 import 'package:audioplayers/audioplayers.dart';
@@ -9,6 +11,7 @@ const Duration popupInterval = Duration(hours: 1);
 const String notificationSound = 'MeetTheSniper.mp3';
 
 void main() async {
+  await DB.init();
   WidgetsFlutterBinding.ensureInitialized();
   await windowManager.ensureInitialized();
 
@@ -125,6 +128,8 @@ class _MainPageState extends State<MainPage> with WindowListener {
   final TextEditingController _currentEntryController = TextEditingController();
   final TextEditingController _todoController = TextEditingController();
 
+  Note? previousNote;
+
   Timer? _popupTimer;
   Timer? _debounceTimer;
 
@@ -180,6 +185,7 @@ class _MainPageState extends State<MainPage> with WindowListener {
   }
 
   Future<void> _showWindow() async {
+    _loadData();
     bool wasVisible = await windowManager.isVisible();
     if (!wasVisible) {
       await windowManager.setSize(const Size(1600, 900));
@@ -193,47 +199,38 @@ class _MainPageState extends State<MainPage> with WindowListener {
   }
 
   Future<void> _playSound() async {
-    try {
-      await _audioPlayer.stop();
-      await _audioPlayer.play(AssetSource('sounds/$notificationSound'));
-      debugPrint("Played sound: $notificationSound");
-    } catch (e, stackTrace) {
-      debugPrint("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-      debugPrint("Error playing sound '$notificationSound': $e");
-      debugPrint("Stack trace: $stackTrace");
-      debugPrint(
-        "Ensure file exists, is valid audio, and assets/sounds/ is in pubspec.yaml",
-      );
-      debugPrint("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
-    }
+    await _audioPlayer.stop();
+    await _audioPlayer.play(AssetSource('sounds/$notificationSound'));
+    debugPrint("Played sound: $notificationSound");
   }
 
-  void _loadData() {
-    _previousEntryController.text =
-        "This is a placeholder for the previous entry.";
-    _todoController.text = "- Placeholder Todo 1\n- Placeholder Todo 2";
+  void _loadData() async {
+    final note = await getLatestNote();
+    previousNote = note;
+    _previousEntryController.text = note?.content ?? "";
+
+    final todo = await getLatestTodo();
+    _todoController.text = todo?.content ?? "";
     _currentEntryController.text = "";
+
     debugPrint("Data loaded (placeholder).");
   }
 
-  void _saveData() {
+  void _saveData() async {
+    String previousEntry = _previousEntryController.text;
     String currentEntry = _currentEntryController.text;
     String todoList = _todoController.text;
 
-    print(
+    await createNote(currentEntry);
+    await createTodo(todoList);
+    previousNote!.content = previousEntry;
+    await updateNote(previousNote!);
+
+    debugPrint(
       "Saving data (placeholder)... Current Entry: [${currentEntry.length} chars], Todo: [${todoList.length} chars]",
     );
   }
 
-  void _saveTodoList() {
-    if (_debounceTimer?.isActive ?? false) _debounceTimer!.cancel();
-
-    _debounceTimer = Timer(const Duration(milliseconds: 500), () {
-      String todoList = _todoController.text;
-      print("Debounced Save: Saving Todo list... [${todoList.length} chars]");
-    });
-  }
-
   Future<void> _setWindowConfig() async {
     await windowManager.setAspectRatio(16 / 9);
   }
@@ -247,7 +244,7 @@ class _MainPageState extends State<MainPage> with WindowListener {
         if (event is KeyDownEvent &&
             event.logicalKey == LogicalKeyboardKey.escape) {
           debugPrint("Escape key pressed - hiding window.");
-          windowManager.hide();
+          onWindowClose();
         }
       },
       child: Scaffold(
@@ -302,14 +299,10 @@ class _MainPageState extends State<MainPage> with WindowListener {
                         context,
                       ).textTheme.bodyMedium, // Apply theme text style
                   decoration: const InputDecoration(
-                    labelText: 'Todo List',
+                    labelText: 'Todo',
                     // border: OutlineInputBorder(), // Handled by theme
                     // contentPadding: EdgeInsets.all(8.0), // Handled by theme or default
                   ),
-                  onChanged: (text) {
-                    // Auto-save Todo list changes (consider debouncing)
-                    _saveTodoList();
-                  },
                 ),
               ),
             ],

lib/notes.dart

@@ -0,0 +1,64 @@
+import 'package:journaler/db.dart';
+
+class Note {
+  final String date;
+  String content;
+
+  Note({required this.date, required this.content});
+}
+
+class Todo {
+  final String date;
+  final String content;
+
+  Todo({required this.date, required this.content});
+}
+
+Future<Note?> getLatestNote() async {
+  final note = await DB.db.rawQuery(
+    'SELECT content, date FROM notes ORDER BY date DESC LIMIT 1',
+  );
+  if (note.isEmpty) {
+    return null;
+  }
+  return Note(
+    date: note[0]['date'] as String,
+    content: note[0]['content'] as String,
+  );
+}
+
+Future<void> createNote(String content) async {
+  if (content.isEmpty) {
+    return;
+  }
+  await DB.db.insert('notes', {'content': content});
+}
+
+Future<void> updateNote(Note note) async {
+  await DB.db.update(
+    'notes',
+    {'content': note.content},
+    where: 'date = ?',
+    whereArgs: [note.date],
+  );
+}
+
+Future<Todo?> getLatestTodo() async {
+  final todo = await DB.db.rawQuery(
+    'SELECT content, date FROM todos ORDER BY date DESC LIMIT 1',
+  );
+  if (todo.isEmpty) {
+    return null;
+  }
+  return Todo(
+    date: todo[0]['date'] as String,
+    content: todo[0]['content'] as String,
+  );
+}
+
+Future<void> createTodo(String content) async {
+  if (content.isEmpty) {
+    return;
+  }
+  await DB.db.insert('todos', {'content': content});
+}

pubspec.lock

@@ -365,6 +365,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.10.1"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      sha256: "84731e8bfd8303a3389903e01fb2141b6e59b5973cacbb0929021df08dddbe8b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.5"
+  sqflite_common_ffi:
+    dependency: "direct main"
+    description:
+      name: sqflite_common_ffi
+      sha256: "1f3ef3888d3bfbb47785cc1dda0dc7dd7ebd8c1955d32a9e8e9dae1e38d1c4c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.5"
+  sqlite3:
+    dependency: transitive
+    description:
+      name: sqlite3
+      sha256: "310af39c40dd0bb2058538333c9d9840a2725ae0b9f77e4fd09ad6696aa8f66e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.5"
   stack_trace:
     dependency: transitive
     description:

pubspec.yaml

@@ -37,6 +37,7 @@ dependencies:
   system_tray: ^2.0.3
   window_manager: ^0.4.3
   audioplayers: ^6.4.0
+  sqflite_common_ffi: ^2.3.5
 
 dev_dependencies:
   flutter_test: