Improved category with colors

lib/domains/account/account_bloc.dart

@@ -6,12 +6,33 @@ import 'package:equatable/equatable.dart';
 import 'package:file_picker/file_picker.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:tunas/repositories/account/account_repository.dart';
+import 'package:tunas/repositories/account/models/account.dart';
+import 'package:tunas/repositories/account/models/category.dart';
 import 'package:tunas/repositories/account/models/transaction.dart';
 import 'package:uuid/uuid.dart';
 
 part 'account_event.dart';
 part 'account_state.dart';
 
+final colors = [
+  'FF74feff',
+  'FF64c0ff',
+  'FF5873fe',
+  'FF4b4cff',
+  'FFc0fcfd',
+  'FFa7caff',
+  'FF8d7efd',
+  'FF7f65fe',
+  'FFe7ffff',
+  'FFd7dafd',
+  'FFd8a6ff',
+  'FFc065fe',
+  'FFffffff',
+  'FFffe6fe',
+  'FFffbdff',
+  'FFff80fe',
+];
+
 class AccountBloc extends Bloc<AccountEvent, AccountState> {
   final AccountRepository _accountRepository;
 
@@ -38,6 +59,7 @@ class AccountBloc extends Bloc<AccountEvent, AccountState> {
 
   _onAccountImportCSV(
       AccountImportCSV event, Emitter<AccountState> emit) async {
+    int colorIndex = 0;
     FilePickerResult? result = await FilePicker.platform.pickFiles();
 
     final csvPath = result?.files.first.path;
@@ -46,19 +68,39 @@ class AccountBloc extends Bloc<AccountEvent, AccountState> {
       final String csvFileContent = await csv.readAsString();
       final List<List<dynamic>> csvList = const CsvToListConverter(fieldDelimiter: '|', eol: '\n').convert(csvFileContent);
 
+      final Map<String, Category> categoriesMap = {};
+
       final transactions = csvList
-          .map((line) => Transaction(
-              uuid: const Uuid().v8(),
-              date: DateTime.parse(line[0]),
-              category: line[1],
-              description: line[2],
-              account: line[3],
-              value: _universalConvertToDouble(line[4]))
-            )
-          .toList();
-      
+        .map((line) {
+          
+          String? categoryLabel = line[1];
+          if (categoryLabel == null || categoryLabel == '') {
+            categoryLabel = 'N/A';
+          }
+
+          if (categoriesMap[categoryLabel] == null) {
+            if (categoryLabel == 'N/A') {
+              categoriesMap[categoryLabel] = Category(label: 'N/A', color: 'FFFF0000' );
+            } else {
+              String color = colorIndex >= colors.length ? 'FF0000FF' : colors[colorIndex];
+              colorIndex++;
+              categoriesMap[categoryLabel] = Category(label: categoryLabel, color: color );
+            }
+          }
+
+          return Transaction(
+            uuid: const Uuid().v8(),
+            date: DateTime.parse(line[0]),
+            category: categoryLabel,
+            description: line[2],
+            account: line[3],
+            value: _universalConvertToDouble(line[4]));
+          })
+        .toList();
+
       await _accountRepository.deleteAccount();
-      await _accountRepository.saveTransactions(transactions);
+      final account = Account(transactions: transactions, categories: categoriesMap.values.toList());
+      await _accountRepository.saveAccount(account);
     }
   }