Update most frequent letter count calculation to normalize by trimmed content length

lib/main.dart

@@ -507,8 +507,10 @@ class MainPageState extends State<MainPage> with WindowListener {
 
     // Save the current note content before navigating away
     if (_currentlyDisplayedNote != null) {
-      _currentlyDisplayedNote!.content = _previousEntryController.text;
-      await updateNote(_currentlyDisplayedNote!);
+      if (_currentlyDisplayedNote!.content != _previousEntryController.text) {
+        _currentlyDisplayedNote!.content = _previousEntryController.text;
+        await updateNote(_currentlyDisplayedNote!);
+      }
     }
 
     final prevNote = await getPreviousTo(_currentlyDisplayedNote!.epochTime);
@@ -526,8 +528,10 @@ class MainPageState extends State<MainPage> with WindowListener {
 
     // Save the current note content before navigating away
     if (_currentlyDisplayedNote != null) {
-      _currentlyDisplayedNote!.content = _previousEntryController.text;
-      await updateNote(_currentlyDisplayedNote!);
+      if (_currentlyDisplayedNote!.content != _previousEntryController.text) {
+        _currentlyDisplayedNote!.content = _previousEntryController.text;
+        await updateNote(_currentlyDisplayedNote!);
+      }
     }
 
     final nextNote = await getNextTo(_currentlyDisplayedNote!.epochTime);
@@ -593,13 +597,17 @@ class MainPageState extends State<MainPage> with WindowListener {
       _currentEntryController.clear(); // Clear the input field after saving
     }
 
-    // Handle scratch pad
-    await createScratch(scratchContent);
+    if (scratchContent != _scratchController.text) {
+      // Was modified
+      await createScratch(scratchContent);
+    }
 
     // Handle previous/currently displayed note
     if (_currentlyDisplayedNote != null) {
-      _currentlyDisplayedNote!.content = previousEntry;
-      await updateNote(_currentlyDisplayedNote!);
+      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),
           ),
         );
       }
@@ -825,11 +831,18 @@ class MainPageState extends State<MainPage> with WindowListener {
                                             // Save current note if needed
                                             if (_currentlyDisplayedNote !=
                                                 null) {
-                                              _currentlyDisplayedNote!.content =
-                                                  _previousEntryController.text;
-                                              await updateNote(
-                                                _currentlyDisplayedNote!,
-                                              );
+                                              if (_currentlyDisplayedNote!
+                                                      .content !=
+                                                  _previousEntryController
+                                                      .text) {
+                                                _currentlyDisplayedNote!
+                                                        .content =
+                                                    _previousEntryController
+                                                        .text;
+                                                await updateNote(
+                                                  _currentlyDisplayedNote!,
+                                                );
+                                              }
                                             }
 
                                             // Navigate to the selected note
@@ -1107,19 +1120,23 @@ class MainPageState extends State<MainPage> with WindowListener {
     String? errorMessage;
 
     // Load current values
-    getMeilisearchEndpoint().then((value) {
-      endpointController.text = value;
-      isLoading = false;
-    }).catchError((e) {
-      errorMessage = 'Failed to load endpoint: $e';
-      isLoading = false;
-    });
+    getMeilisearchEndpoint()
+        .then((value) {
+          endpointController.text = value;
+          isLoading = false;
+        })
+        .catchError((e) {
+          errorMessage = 'Failed to load endpoint: $e';
+          isLoading = false;
+        });
 
-    getMeilisearchApiKey().then((value) {
-      apiKeyController.text = value;
-    }).catchError((e) {
-      errorMessage = 'Failed to load API key: $e';
-    });
+    getMeilisearchApiKey()
+        .then((value) {
+          apiKeyController.text = value;
+        })
+        .catchError((e) {
+          errorMessage = 'Failed to load API key: $e';
+        });
 
     showDialog(
       context: context,
@@ -1168,29 +1185,34 @@ class MainPageState extends State<MainPage> with WindowListener {
                   child: const Text('Cancel'),
                 ),
                 TextButton(
-                  onPressed: isLoading ? null : () async {
-                    try {
-                      setState(() {
-                        isLoading = true;
-                        errorMessage = null;
-                      });
+                  onPressed:
+                      isLoading
+                          ? null
+                          : () async {
+                            try {
+                              setState(() {
+                                isLoading = true;
+                                errorMessage = null;
+                              });
 
-                      await setMeilisearchEndpoint(endpointController.text);
-                      await setMeilisearchApiKey(apiKeyController.text);
+                              await setMeilisearchEndpoint(
+                                endpointController.text,
+                              );
+                              await setMeilisearchApiKey(apiKeyController.text);
 
-                      // Try to reinitialize Meilisearch with new settings
-                      await init();
-                      
-                      if (mounted) {
-                        Navigator.of(context).pop();
-                      }
-                    } catch (e) {
-                      setState(() {
-                        errorMessage = 'Failed to save settings: $e';
-                        isLoading = false;
-                      });
-                    }
-                  },
+                              // Try to reinitialize Meilisearch with new settings
+                              await init();
+
+                              if (mounted) {
+                                Navigator.of(context).pop();
+                              }
+                            } catch (e) {
+                              setState(() {
+                                errorMessage = 'Failed to save settings: $e';
+                                isLoading = false;
+                              });
+                            }
+                          },
                   child: const Text('Save'),
                 ),
               ],

lib/meilisearch.dart

@@ -345,11 +345,13 @@ Future<Note> createNote(String content) async {
 
   final mostFrequentLetter =
       letterFrequency.entries.reduce((a, b) => a.value > b.value ? a : b).key;
-  final mostFrequentLetterCount = letterFrequency[mostFrequentLetter];
+  final mostFrequentLetterCount =
+      letterFrequency[mostFrequentLetter]! / trimmedContent.length;
 
   final document = {
     'id': generateRandomString(32),
     'date': DateTime.now().toUtc().millisecondsSinceEpoch,
+    'dateISO': DateTime.now().toUtc().toIso8601String(),
     'content': content,
     'topLetter': mostFrequentLetter,
     'topLetterFrequency': mostFrequentLetterCount,
@@ -433,6 +435,10 @@ 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,
   };