Optimize note content updates and improve scratch pad handling

lib/main.dart

@@ -507,9 +507,11 @@ class MainPageState extends State<MainPage> with WindowListener {
 
     // Save the current note content before navigating away
     if (_currentlyDisplayedNote != null) {
+      if (_currentlyDisplayedNote!.content != _previousEntryController.text) {
         _currentlyDisplayedNote!.content = _previousEntryController.text;
         await updateNote(_currentlyDisplayedNote!);
       }
+    }
 
     final prevNote = await getPreviousTo(_currentlyDisplayedNote!.epochTime);
     if (prevNote != null) {
@@ -526,9 +528,11 @@ class MainPageState extends State<MainPage> with WindowListener {
 
     // Save the current note content before navigating away
     if (_currentlyDisplayedNote != null) {
+      if (_currentlyDisplayedNote!.content != _previousEntryController.text) {
         _currentlyDisplayedNote!.content = _previousEntryController.text;
         await updateNote(_currentlyDisplayedNote!);
       }
+    }
 
     final nextNote = await getNextTo(_currentlyDisplayedNote!.epochTime);
     if (nextNote != null) {
@@ -593,13 +597,17 @@ class MainPageState extends State<MainPage> with WindowListener {
       _currentEntryController.clear(); // Clear the input field after saving
     }
 
-    // Handle scratch pad
+    if (scratchContent != _scratchController.text) {
+      // Was modified
       await createScratch(scratchContent);
+    }
 
     // Handle previous/currently displayed note
     if (_currentlyDisplayedNote != null) {
+      if (_currentlyDisplayedNote!.content != previousEntry) {
         _currentlyDisplayedNote!.content = previousEntry;
         await updateNote(_currentlyDisplayedNote!);
+      }
 
       // If the note was deleted (due to being empty), update the UI state
       if (previousEntry.isEmpty) {
@@ -662,9 +670,7 @@ class MainPageState extends State<MainPage> with WindowListener {
         spans.add(
           TextSpan(
             text: highlightedText.substring(lastIndex, match.start),
-            style: const TextStyle(
-              fontSize: 13,
-            ),
+            style: const TextStyle(fontSize: 13),
           ),
         );
       }
@@ -825,12 +831,19 @@ class MainPageState extends State<MainPage> with WindowListener {
                                             // Save current note if needed
                                             if (_currentlyDisplayedNote !=
                                                 null) {
-                                              _currentlyDisplayedNote!.content =
-                                                  _previousEntryController.text;
+                                              if (_currentlyDisplayedNote!
+                                                      .content !=
+                                                  _previousEntryController
+                                                      .text) {
+                                                _currentlyDisplayedNote!
+                                                        .content =
+                                                    _previousEntryController
+                                                        .text;
                                                 await updateNote(
                                                   _currentlyDisplayedNote!,
                                                 );
                                               }
+                                            }
 
                                             // Navigate to the selected note
                                             Navigator.of(context).pop();
@@ -1107,17 +1120,21 @@ class MainPageState extends State<MainPage> with WindowListener {
     String? errorMessage;
 
     // Load current values
-    getMeilisearchEndpoint().then((value) {
+    getMeilisearchEndpoint()
+        .then((value) {
           endpointController.text = value;
           isLoading = false;
-    }).catchError((e) {
+        })
+        .catchError((e) {
           errorMessage = 'Failed to load endpoint: $e';
           isLoading = false;
         });
 
-    getMeilisearchApiKey().then((value) {
+    getMeilisearchApiKey()
+        .then((value) {
           apiKeyController.text = value;
-    }).catchError((e) {
+        })
+        .catchError((e) {
           errorMessage = 'Failed to load API key: $e';
         });
 
@@ -1168,14 +1185,19 @@ class MainPageState extends State<MainPage> with WindowListener {
                   child: const Text('Cancel'),
                 ),
                 TextButton(
-                  onPressed: isLoading ? null : () async {
+                  onPressed:
+                      isLoading
+                          ? null
+                          : () async {
                             try {
                               setState(() {
                                 isLoading = true;
                                 errorMessage = null;
                               });
 
-                      await setMeilisearchEndpoint(endpointController.text);
+                              await setMeilisearchEndpoint(
+                                endpointController.text,
+                              );
                               await setMeilisearchApiKey(apiKeyController.text);
 
                               // Try to reinitialize Meilisearch with new settings

lib/meilisearch.dart

@@ -350,6 +350,7 @@ Future<Note> createNote(String content) async {
   final document = {
     'id': generateRandomString(32),
     'date': DateTime.now().toUtc().millisecondsSinceEpoch,
+    'dateISO': DateTime.now().toUtc().toIso8601String(),
     'content': content,
     'topLetter': mostFrequentLetter,
     'topLetterFrequency': mostFrequentLetterCount,
@@ -433,6 +434,10 @@ Future<void> updateNote(Note note) async {
     'id': note.id,
     'content': trimmedContent,
     'date': note.epochTime,
+    'dateISO':
+        DateTime.fromMillisecondsSinceEpoch(
+          note.epochTime,
+        ).toUtc().toIso8601String(),
     'topLetter': mostFrequentLetter,
     'topLetterFrequency': mostFrequentLetterRatio,
   };