🚚 reorganize classes

packages/clean_framework/lib/clean_framework_core.dart

@@ -0,0 +1 @@
+export 'package:clean_framework/clean_framework_core.dart';

packages/clean_framework/lib/clean_framework_providers.dart

@@ -3,14 +3,14 @@ library clean_framework_providers;
 
 export 'package:clean_framework/src/core/external_interface/request.dart';
 export 'package:clean_framework/src/core/external_interface/response.dart';
+export 'package:clean_framework/src/core/use_case/entity.dart';
+export 'package:clean_framework/src/core/use_case/use_case.dart';
+export 'package:clean_framework/src/presentation/presenter/view_model.dart';
 export 'package:clean_framework/src/providers/bridge_gateway_provider.dart';
-export 'package:clean_framework/src/providers/entity.dart';
 export 'package:clean_framework/src/providers/external_interface.dart';
 export 'package:clean_framework/src/providers/external_interface_provider.dart';
 export 'package:clean_framework/src/providers/gateway.dart';
 export 'package:clean_framework/src/providers/gateway_provider.dart';
 export 'package:clean_framework/src/providers/presenter.dart';
 export 'package:clean_framework/src/providers/ui.dart';
-export 'package:clean_framework/src/providers/use_case.dart';
 export 'package:clean_framework/src/providers/use_case_provider.dart';
-export 'package:clean_framework/src/providers/view_model.dart';

packages/clean_framework/lib/src/core/core.dart

@@ -0,0 +1,8 @@
+export 'external_interface/external_interface.dart';
+export 'external_interface/external_interface_provider.dart';
+export 'external_interface/request.dart';
+export 'external_interface/response.dart';
+export 'gateway/gateway.dart';
+export 'gateway/gateway_provider.dart';
+export 'use_case/use_case.dart';
+export 'use_case/use_case_provider.dart';

packages/clean_framework/lib/src/providers/use_case/helpers/input.dart → packages/clean_framework/lib/src/core/use_case/helpers/input.dart

@@ -1,4 +1,4 @@
-import 'package:clean_framework/src/providers/use_case/helpers/output.dart';
+import 'package:clean_framework/src/core/use_case/helpers/output.dart';
 import 'package:meta/meta.dart';
 
 @immutable

packages/clean_framework/lib/src/providers/use_case/helpers/request_subscription_map.dart → packages/clean_framework/lib/src/core/use_case/helpers/request_subscription_map.dart

@@ -1,7 +1,7 @@
 import 'dart:async';
 
-import 'package:clean_framework/src/providers/use_case/helpers/input.dart';
-import 'package:clean_framework/src/providers/use_case/helpers/output.dart';
+import 'package:clean_framework/src/core/use_case/helpers/input.dart';
+import 'package:clean_framework/src/core/use_case/helpers/output.dart';
 import 'package:clean_framework/src/utilities/either.dart';
 
 typedef RequestSubscriptionMap<I extends Input>

packages/clean_framework/lib/src/providers/use_case/helpers/use_case_transformer.dart → packages/clean_framework/lib/src/core/use_case/helpers/use_case_transformer.dart

@@ -1,6 +1,6 @@
-import 'package:clean_framework/src/providers/entity.dart';
-import 'package:clean_framework/src/providers/use_case/helpers/input.dart';
-import 'package:clean_framework/src/providers/use_case/helpers/output.dart';
+import 'package:clean_framework/src/core/use_case/entity.dart';
+import 'package:clean_framework/src/core/use_case/helpers/input.dart';
+import 'package:clean_framework/src/core/use_case/helpers/output.dart';
 import 'package:meta/meta.dart';
 
 part 'input_filter_map.dart';

packages/clean_framework/lib/src/core/use_case/use_case.dart

@@ -1,12 +1,12 @@
 import 'dart:async';
 
-import 'package:clean_framework/src/providers/entity.dart';
-import 'package:clean_framework/src/providers/use_case/use_case_helpers.dart';
-import 'package:clean_framework/src/providers/use_case_debounce_mixin.dart';
+import 'package:clean_framework/src/core/use_case/entity.dart';
+import 'package:clean_framework/src/core/use_case/use_case_debounce_mixin.dart';
+import 'package:clean_framework/src/core/use_case/use_case_helpers.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:meta/meta.dart';
 
-export 'package:clean_framework/src/providers/use_case/use_case_helpers.dart';
+export 'package:clean_framework/src/core/use_case/use_case_helpers.dart';
 
 typedef InputCallback<E extends Entity, I extends Input> = E Function(I);
 

packages/clean_framework/lib/src/core/use_case/use_case_provider.dart

@@ -1,8 +1,8 @@
 import 'dart:async';
 
 import 'package:clean_framework/src/core/clean_framework_provider.dart';
+import 'package:clean_framework/src/core/use_case/entity.dart';
 import 'package:clean_framework/src/core/use_case/use_case.dart';
-import 'package:clean_framework/src/providers/entity.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:meta/meta.dart';
 

packages/clean_framework/lib/src/presentation/presentation.dart

@@ -0,0 +1,2 @@
+export 'presenter/presenter.dart';
+export 'presenter/view_model.dart';

packages/clean_framework/lib/src/presentation/presenter/presenter.dart

@@ -0,0 +1,94 @@
+import 'package:clean_framework/src/core/core.dart';
+import 'package:clean_framework/src/presentation/presenter/view_model.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+abstract class Presenter<V extends ViewModel, O extends Output,
+    U extends UseCase> extends ConsumerStatefulWidget {
+  const Presenter({
+    super.key,
+    required UseCaseProvider provider,
+    required this.builder,
+  }) : _provider = provider;
+  final UseCaseProvider _provider;
+  final PresenterBuilder<V> builder;
+
+  @override
+  ConsumerState<Presenter<V, O, U>> createState() => _PresenterState<V, O, U>();
+
+  @protected
+  V createViewModel(U useCase, O output);
+
+  /// Called when this presenter is inserted into the tree.
+  @protected
+  void onLayoutReady(BuildContext context, U useCase) {}
+
+  /// Called whenever the [output] updates.
+  @protected
+  void onOutputUpdate(BuildContext context, O output) {}
+
+  /// Called whenever the presenter configuration changes.
+  @protected
+  void didUpdatePresenter(
+    BuildContext context,
+    covariant Presenter<V, O, U> old,
+    U useCase,
+  ) {}
+
+  /// Called when this presenter is removed from the tree.
+  @protected
+  void onDestroy(U useCase) {}
+
+  @visibleForTesting
+  O subscribe(WidgetRef ref) => _provider.subscribe<O>(ref);
+}
+
+class _PresenterState<V extends ViewModel, O extends Output, U extends UseCase>
+    extends ConsumerState<Presenter<V, O, U>> {
+  U? _useCase;
+
+  @override
+  WidgetRef get ref => context as WidgetRef;
+
+  @override
+  void initState() {
+    super.initState();
+    SchedulerBinding.instance.addPostFrameCallback((_) {
+      widget.onLayoutReady(context, _useCase!);
+    });
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    _useCase ??= widget._provider.getUseCase(ref) as U;
+  }
+
+  @override
+  void didUpdateWidget(covariant Presenter<V, O, U> oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    widget.didUpdatePresenter(context, oldWidget, _useCase!);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    widget._provider.listen<O>(ref, _onOutputChanged);
+    final output = widget.subscribe(ref);
+    return widget.builder(widget.createViewModel(_useCase!, output));
+  }
+
+  void _onOutputChanged(O? previous, O next) {
+    if (previous != next) widget.onOutputUpdate(context, next);
+  }
+
+  @override
+  void dispose() {
+    SchedulerBinding.instance.addPostFrameCallback((_) {
+      widget.onDestroy(_useCase!);
+    });
+    super.dispose();
+  }
+}
+
+typedef PresenterBuilder<V extends ViewModel> = Widget Function(V viewModel);

packages/clean_framework/lib/src/utilities/clean_framework_observer.dart

@@ -2,8 +2,8 @@ import 'dart:developer';
 
 import 'package:clean_framework/src/core/external_interface/request.dart';
 import 'package:clean_framework/src/core/external_interface/response.dart';
+import 'package:clean_framework/src/core/use_case/helpers/input.dart';
 import 'package:clean_framework/src/providers/external_interface.dart';
-import 'package:clean_framework/src/providers/use_case.dart';
 
 /// The class to observe failures, route changes and other events.
 class CleanFrameworkObserver {