dynamic theme, basic category settings

lib/domains/category/category_bloc.dart

@@ -1,18 +1,35 @@
+import 'dart:async';
 import 'dart:ui';
 
 import 'package:equatable/equatable.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:tunas/repositories/metadata/metadata_repository.dart';
 import 'package:tunas/repositories/metadata/models/category.dart';
+import 'package:tunas/repositories/transactions/models/transaction.dart';
+import 'package:tunas/repositories/transactions/transactions_repository.dart';
+import 'package:uuid/uuid.dart';
 
 part 'category_event.dart';
 part 'category_state.dart';
 
 class CategoryBloc extends Bloc<CategoryEvent, CategoryState> {
   final MetadataRepository _metadataRepository;
+  final TransactionsRepository _transactionsRepository;
 
-  CategoryBloc({required MetadataRepository metadataRepository}) : _metadataRepository = metadataRepository, super(const CategoryState())  {
+  CategoryBloc({
+    required MetadataRepository metadataRepository, 
+    required TransactionsRepository transactionsRepository,
+  }) 
+  : _metadataRepository = metadataRepository, 
+    _transactionsRepository = transactionsRepository,
+    super(const CategoryState())  {
     on<CategoriesLoad>(_onCategoriesLoad);
+    on<CategoryEditColor>(_onCategoryEditColor);
+    on<CategoryEditTransfert>(_onCategoryEditTransfert);
+    on<CategoryEditEssential>(_onCategoryEditEssential);
+    on<CategoryEditLabel>(_onCategoryEditLabel);
+    on<CategoryRemove>(_onCategoryRemove);
+    on<CategoryAdd>(_onCategoryAdd);
 
     _metadataRepository
       .getCategoriesStream()
@@ -22,9 +39,81 @@ class CategoryBloc extends Bloc<CategoryEvent, CategoryState> {
   _onCategoriesLoad(
     CategoriesLoad event, Emitter<CategoryState> emit
   ) {
-    emit(state.copyWith(
-      categories: event.categories,
-      categoriesColors: { for (var category in event.categories) category.label : category.rgbToColor() }
-    ));
+    emit(_computeState(event.categories));
+  }
+
+  FutureOr<void> _onCategoryEditColor(CategoryEditColor event, Emitter<CategoryState> emit) async {
+    Category category = event.category;
+    category.color = event.color;
+    emit(_computeState(await _saveCategory(category)));
+  }
+
+  FutureOr<void> _onCategoryEditTransfert(CategoryEditTransfert event, Emitter<CategoryState> emit) async {
+    Category category = event.category;
+    category.transfert = event.transfert;
+    emit(_computeState(await _saveCategory(category)));
+  }
+
+  FutureOr<void> _onCategoryEditEssential(CategoryEditEssential event, Emitter<CategoryState> emit) async {
+    Category category = event.category;
+    category.essential = event.essential;
+    emit(_computeState(await _saveCategory(category)));
+  }
+
+  FutureOr<void> _onCategoryEditLabel(CategoryEditLabel event, Emitter<CategoryState> emit) async {
+    // TODO check for existance, rename every transaction
+  }
+
+  FutureOr<void> _onCategoryRemove(CategoryRemove event, Emitter<CategoryState> emit) async {
+    CategoryState originalCategoryState = state.copyWith();
+    Category categoryToRemove = event.category;
+    List<Category> categories = state.categories;
+    List<Transaction> transactions = _transactionsRepository.getTransactions();
+
+    if (transactions.any((transaction) => transaction.category == categoryToRemove.label)) {
+      emit(CategoryRemoveFail());
+      emit(originalCategoryState);
+    } else {
+      categories.removeWhere((category) => category.label == categoryToRemove.label);
+      emit(CategoryRemoveSucess());
+      emit(_computeState(await _metadataRepository.saveCategories(categories)));
+    }
+  }
+
+  FutureOr<void> _onCategoryAdd(CategoryAdd event, Emitter<CategoryState> emit) async {
+    String uuid = const Uuid().v8();
+    Category category = Category(
+      label: 'Category $uuid',
+      color: 'FF74feff',
+    );
+
+    emit(_computeState(await _saveCategory(category)));
+  }
+
+  _saveCategory(Category categoryToSave) async {
+    List<Category> categories = _metadataRepository.getCategories();
+
+    try {
+      Category categoryFound = categories.firstWhere((category) => category.label == categoryToSave.label);
+      categoryFound.color = categoryToSave.color;
+      categoryFound.essential = categoryToSave.essential;
+      categoryFound.transfert = categoryToSave.transfert;
+    } catch (e) {
+      if (categories.isEmpty) {
+        categories = [categoryToSave];
+      } else {
+        categories.add(categoryToSave);
+      }
+    }
+
+    await _metadataRepository.saveCategories(categories);
+    return categories;
+  }
+
+  CategoryState _computeState(List<Category> categories) {
+    return state.copyWith(
+      categories: categories,
+      categoriesColors: { for (var category in categories) category.label : category.rgbToColor() }
+    );
   }
 }

lib/domains/category/category_event.dart

@@ -13,4 +13,55 @@ final class CategoriesLoad extends CategoryEvent {
 
   @override
   List<Object> get props => [categories];
-}
+}
+
+final class CategoryEditColor extends CategoryEvent {
+  final Category category;
+  final String color;
+
+  const CategoryEditColor(this.category, this.color);
+
+  @override
+  List<Object> get props => [category, color]; 
+}
+
+final class CategoryEditTransfert extends CategoryEvent {
+  final Category category;
+  final bool transfert;
+
+  const CategoryEditTransfert(this.category, this.transfert);
+
+  @override
+  List<Object> get props => [category, transfert]; 
+}
+
+final class CategoryEditEssential extends CategoryEvent {
+  final Category category;
+  final bool essential;
+
+  const CategoryEditEssential(this.category, this.essential);
+
+  @override
+  List<Object> get props => [category, essential]; 
+}
+
+final class CategoryEditLabel extends CategoryEvent {
+  final Category category;
+  final String label;
+
+  const CategoryEditLabel(this.category, this.label);
+
+  @override
+  List<Object> get props => [category, label]; 
+}
+
+final class CategoryRemove extends CategoryEvent {
+  final Category category;
+
+  const CategoryRemove(this.category);
+
+  @override
+  List<Object> get props => [category]; 
+}
+
+final class CategoryAdd extends CategoryEvent {}

lib/domains/category/category_state.dart

@@ -1,6 +1,6 @@
 part of 'category_bloc.dart';
 
-final class CategoryState extends Equatable {
+final class CategoryState {
   final List<Category> categories;
   final Map<String, Color> categoriesColors; 
 
@@ -18,7 +18,7 @@ final class CategoryState extends Equatable {
       categoriesColors: categoriesColors ?? this.categoriesColors,
     );
   }
-  
-  @override
-  List<Object> get props => [categories, categoriesColors];
 }
+
+final class CategoryRemoveFail extends CategoryState {}
+final class CategoryRemoveSucess extends CategoryState {}