Implement whole ass "backend"

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();
-                  },
                 ),
               ),
             ],