feat: Add color and icon properties to categories, enhance category management in UI

lib/data/note_repository.dart

@@ -12,6 +12,7 @@ import 'package:notas/models/category.dart';
 
 import 'package:notas/data/note_encryption.dart';
 import 'package:notas/widgets/sync_status.dart';
+import 'package:flutter/foundation.dart' show debugPrint;
 
 class NoteRepository {
   NoteRepository({
@@ -34,6 +35,56 @@ class NoteRepository {
     return _loadDeletedNotesFromDatabase();
   }
 
+  Future<List<Category>> loadCategories() async {
+    final List<DbCategory> dbCategories = await _database.getAllCategories();
+    final List<Category> categories = [];
+    for (final DbCategory row in dbCategories) {
+      try {
+        final String decryptedName = await NoteEncryption.decryptNote(
+          row.encryptedName,
+          _masterKey,
+        );
+        categories.add(
+          Category(
+            id: row.id,
+            name: decryptedName,
+            serverVersion: row.serverVersion,
+            isDeleted: row.isDeleted,
+            updatedAt: row.updatedAt,
+            isDirty: row.isDirty,
+            colorValue: row.colorValue,
+            iconCodePoint: row.iconCodePoint,
+          ),
+        );
+      } catch (e) {
+        debugPrint('Error al desencriptar categoría: $e');
+      }
+    }
+    return categories;
+  }
+
+  Future<void> createCategory(Category category) async {
+    debugPrint('createCategory called with: ${category.name}');
+    final String encryptedName = await NoteEncryption.encryptNote(
+      category.name,
+      _masterKey,
+    );
+    debugPrint('Category name encrypted');
+    await _database.upsertCategory(
+      CategoriesCompanion.insert(
+        id: category.id,
+        encryptedName: encryptedName,
+        updatedAt: category.updatedAt,
+        serverVersion: const Value(0),
+        isDeleted: const Value(false),
+        isDirty: const Value(true),
+        colorValue: Value<int?>(category.colorValue),
+        iconCodePoint: Value<int?>(category.iconCodePoint),
+      ),
+    );
+    debugPrint('Category inserted to database');
+  }
+
   Future<Note> createNote(Note note) async {
     await _database.insertNoteAtTop(
       NotesCompanion.insert(
@@ -60,7 +111,7 @@ class NoteRepository {
 
     final DbNote row =
         existingNote ??
-      (throw ArgumentError('Note not found for id ${note.id}.'));
+        (throw ArgumentError('Note not found for id ${note.id}.'));
 
     await _database.updateNoteRow(
       DbNote(
@@ -92,7 +143,7 @@ class NoteRepository {
 
     final DbNote row =
         existingNote ??
-      (throw ArgumentError('Note not found for id ${note.id}.'));
+        (throw ArgumentError('Note not found for id ${note.id}.'));
 
     if (row.isDeleted || note.isDeleted || note.isPermanentlyDeleted) {
       await _database.permanentlyDeleteNote(row.id);
@@ -111,7 +162,7 @@ class NoteRepository {
 
     final DbNote row =
         existingNote ??
-      (throw ArgumentError('Note not found for id ${note.id}.'));
+        (throw ArgumentError('Note not found for id ${note.id}.'));
 
     await _database.moveNote(
       id: row.id,
@@ -212,10 +263,7 @@ class NoteRepository {
           details.add('StackTrace: ${stackTrace.toString()}');
         }
 
-        return {
-          'error': true,
-          'message': details.join('\n\n'),
-        };
+        return {'error': true, 'message': details.join('\n\n')};
       }
 
       final SyncResponse response = syncResult['data'] as SyncResponse;
@@ -249,10 +297,7 @@ class NoteRepository {
         'categoriesCount': response.changes.categories.length,
       };
     } catch (e, st) {
-      return {
-        'error': true,
-        'message': '$e\n\nStackTrace: $st',
-      };
+      return {'error': true, 'message': '$e\n\nStackTrace: $st'};
     }
   }
 
@@ -263,21 +308,18 @@ class NoteRepository {
     // Apply categories from server
     for (final SyncCategoryResponse catResponse
         in response.changes.categories) {
-      final String categoryName =
-          catResponse.isDeleted || catResponse.encryptedName.isEmpty
-          ? ''
-          : await NoteEncryption.decryptNote(
-              catResponse.encryptedName,
-              _masterKey,
-            );
-
+      // Store the encrypted blob received from the server directly in the DB.
+      // Decryption is only performed when loading categories for display.
+      final String encryptedBlob = catResponse.encryptedName;
 
       await _database.upsertCategory(
         CategoriesCompanion(
           id: Value(catResponse.id),
-          encryptedName: Value(categoryName),
+          encryptedName: Value(encryptedBlob),
           serverVersion: Value(catResponse.serverVersion),
           isDeleted: Value(catResponse.isDeleted),
+          colorValue: Value<int?>(catResponse.colorValue),
+          iconCodePoint: Value<int?>(catResponse.iconCodePoint),
           updatedAt: Value(catResponse.updatedAt),
           isDirty: const Value(false),
         ),
@@ -439,9 +481,10 @@ Future<List<SyncCategoryPayload>> _encryptCategories(
   final List<SyncCategoryPayload> payloads = [];
 
   for (final DbCategory row in categories) {
-    final String encryptedName = row.encryptedName.isEmpty
-        ? ''
-        : await NoteEncryption.encryptNote(row.encryptedName, masterKey);
+    // The DB already stores the encrypted name blob in `encryptedName`.
+    // Use it directly when building the sync payload and preserve
+    // color/icon values from the DB row so they are sent to the server.
+    final String encryptedName = row.encryptedName;
 
     payloads.add(
       SyncCategoryPayload.fromCategory(
@@ -452,6 +495,8 @@ Future<List<SyncCategoryPayload>> _encryptCategories(
           isDeleted: row.isDeleted,
           updatedAt: row.updatedAt,
           isDirty: row.isDirty,
+          colorValue: row.colorValue,
+          iconCodePoint: row.iconCodePoint,
         ),
         encryptedName: encryptedName,
       ),