Simulation wizard: finish mode screen and country screen (at least in 90%).

Author: SiekamCebule

countries.json

@@ -0,0 +1 @@
+[{"name":"Paul-Ausserleitner-Schanze","locality":"Bischoschofen","country":"at","k":125.0,"hs":142.0,"landingEase":-1,"profileType":1,"jumpsVariability":0,"typicalWindDirection":"tailwind","typicalWindStrength":2.11,"pointsForGate":4.86,"pointsForHeadwind":10.8,"pointsForTailwind":16.2},{"name":"Średnia Krokiew","locality":"Zakopane","country":"pl","k":95.0,"hs":105.0,"landingEase":1,"profileType":2,"jumpsVariability":0,"typicalWindStrength":2.77,"pointsForGate":7.0,"pointsForHeadwind":8.0,"pointsForTailwind":12.0},{"name":"Letalnica","locality":"Planica","country":"si","k":202.0,"hs":240.0,"landingEase":-1,"profileType":-1,"jumpsVariability":1,"typicalWindDirection":"leftTailwind","pointsForGate":8.64,"pointsForHeadwind":14.4,"pointsForTailwind":21.6}]

hills.json

@@ -0,0 +1 @@
+[{"age":35,"name":"Philipp","surname":"Aschenwald","country":"at","sex":1,"skills":{"qualityOnSmallerHills":82.0,"qualityOnLargerHills":72.0,"landingStyle":-1,"jumpsConsistency":-1}},{"age":32,"name":"Daniel","surname":"Huber","country":"at","sex":1,"skills":{"qualityOnSmallerHills":81.24,"qualityOnLargerHills":88.0,"landingStyle":1,"jumpsConsistency":1}},{"age":37,"name":"Kamil","surname":"Stoch","country":"pl","sex":1,"skills":{"qualityOnSmallerHills":82.0,"qualityOnLargerHills":83.0,"landingStyle":3,"jumpsConsistency":2}},{"age":31,"name":"Stefan","surname":"Kraft","country":"at","sex":1,"skills":{"qualityOnSmallerHills":88.0,"qualityOnLargerHills":95.0,"landingStyle":3,"jumpsConsistency":1}},{"age":37,"name":"Dawid","surname":"Kubacki","country":"pl","sex":1,"skills":{"qualityOnSmallerHills":91.25,"qualityOnLargerHills":81.0,"landingStyle":1,"jumpsConsistency":0}}]

jumpers_female.json

@@ -0,0 +1 @@
+[{"age":35,"name":"Philipp","surname":"Aschenwald","country":"at","sex":0,"skills":{"qualityOnSmallerHills":82.0,"qualityOnLargerHills":72.0,"landingStyle":-1,"jumpsConsistency":-1}},{"age":37,"name":"Kamil","surname":"Stoch","country":"pl","sex":0,"skills":{"qualityOnSmallerHills":82.0,"qualityOnLargerHills":83.0,"landingStyle":3,"jumpsConsistency":2}},{"age":31,"name":"Stefan","surname":"Kraft","country":"at","sex":0,"skills":{"qualityOnSmallerHills":88.0,"qualityOnLargerHills":95.0,"landingStyle":3,"jumpsConsistency":1}},{"age":27,"name":"Andrzej","surname":"Stękała","country":"pl","sex":0,"skills":{"qualityOnSmallerHills":68.0,"qualityOnLargerHills":84.0,"landingStyle":2,"jumpsConsistency":-2}},{"age":32,"name":"Daniel","surname":"Huber","country":"at","sex":0,"skills":{"qualityOnSmallerHills":81.24,"qualityOnLargerHills":88.0,"landingStyle":1,"jumpsConsistency":1}},{"age":37,"name":"Konrad","surname":"Kubacki","country":"pl","sex":0,"skills":{"qualityOnSmallerHills":91.25,"qualityOnLargerHills":81.0,"landingStyle":1,"jumpsConsistency":0}}]

jumpers_male.json

@@ -3,13 +3,15 @@ import 'dart:io';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:sj_manager/json/db_items_json.dart';
-import 'package:sj_manager/models/db/db_items_file_system_entity.dart';
+import 'package:sj_manager/models/db/db_file_system_entity_names.dart';
 import 'package:sj_manager/models/db/hill/hill.dart';
 import 'package:sj_manager/models/db/jumper/jumper.dart';
 import 'package:sj_manager/models/db/local_db_repo.dart';
 import 'package:sj_manager/repositories/database_editing/db_items_json_configuration.dart';
 import 'package:sj_manager/utils/file_system.dart';
 
+import 'package:path/path.dart' as path;
+
 class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
   CopiedLocalDbCubit({
     required this.originalDb,
@@ -46,7 +48,7 @@ class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
         .setItems(state!.editableByGenericType<T>().lastItems);
     _saveItemsToJsonByType<T>(
       context: context,
-      file: context.read<DbItemsFileSystemEntity<T>>().entity as File,
+      file: File(context.read<DbFileSystemEntityNames>().byGenericType<T>()),
     );
   }
 
@@ -55,23 +57,23 @@ class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<MaleJumper>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().maleJumpers),
       ),
     );
     if (!context.mounted) return;
     await _saveItemsToJsonByType<FemaleJumper>(
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<FemaleJumper>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().femaleJumpers),
       ),
     );
     if (!context.mounted) return;
     await _saveItemsToJsonByType<Hill>(
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<Hill>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().hills),
       ),
     );
   }
@@ -91,7 +93,7 @@ class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<MaleJumper>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().maleJumpers),
       ),
     );
     state!.maleJumpers.setItems(males);
@@ -100,7 +102,7 @@ class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<FemaleJumper>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().femaleJumpers),
       ),
     );
     state!.femaleJumpers.setItems(females);
@@ -109,7 +111,7 @@ class CopiedLocalDbCubit extends Cubit<LocalDbRepo?> {
       context: context,
       file: fileInDirectory(
         directory,
-        context.read<DbItemsFileSystemEntity<Hill>>().basename,
+        path.basename(context.read<DbFileSystemEntityNames>().hills),
       ),
     );
     state!.hills.setItems(hills);

lib/bloc/database_editing/copied_local_db_cubit.dart

@@ -0,0 +1,42 @@
+import 'package:rxdart/rxdart.dart';
+
+class LinearNavigationPermissionsRepo {
+  LinearNavigationPermissionsRepo({bool initialForward = true, bool initialBack = true})
+      : _canGoForward = initialForward,
+        _canGoBack = initialBack {
+    _forwardNavSubject.add(_canGoForward);
+    _backNavSubject.add(_canGoBack);
+  }
+
+  final _forwardNavSubject = BehaviorSubject<bool>();
+  final _backNavSubject = BehaviorSubject<bool>();
+
+  bool _canGoForward;
+  bool _canGoBack;
+
+  bool get canGoForward => _canGoForward;
+  bool get canGoBack => _canGoBack;
+
+  ValueStream<bool> get canGoForwardStream => _forwardNavSubject.stream;
+  ValueStream<bool> get canGoBackStream => _backNavSubject.stream;
+
+  set canGoForward(bool other) {
+    _canGoForward = other;
+    _forwardNavSubject.add(_canGoForward);
+  }
+
+  set canGoBack(bool other) {
+    _canGoBack = other;
+    _backNavSubject.add(_canGoBack);
+  }
+
+  void entirelyBlock() {
+    canGoForward = false;
+    canGoBack = false;
+  }
+
+  void entirelyAllow() {
+    canGoForward = true;
+    canGoBack = true;
+  }
+}

lib/bloc/simulation_wizard/linear_navigation_permissions_repo.dart

@@ -1,24 +1,19 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:sj_manager/bloc/simulation_wizard/linear_navigation_permissions_repo.dart';
 import 'package:sj_manager/bloc/simulation_wizard/simulation_wizard_screen.dart';
 import 'package:sj_manager/bloc/simulation_wizard/simulation_wizard_navigation_state.dart';
 
-// Musimy udostępnić w stanie cubita info o tym, czy można przejść do przodu/do tyłu
-// Czy screens też? Kto tego potrzebuje? MOże też być potrzebne
-// Tak jak current
-
-// Jak więc usunąć opóżnienie?
-
 class SimulationWizardNavigationCubit extends Cubit<SimulationWizardNavigationState> {
-  SimulationWizardNavigationCubit()
+  SimulationWizardNavigationCubit({required this.navPermissions})
       : super(const UninitializedSimulationWizardNavigationState());
 
+  final LinearNavigationPermissionsRepo navPermissions;
+
   void setUp({
     required List<SimulationWizardScreen> screens,
   }) {
     emit(InitializedSimulationWizardNavigationState(
       screens: screens,
-      canGoBack: _canGoBack(currentScreenIndex: 0),
-      canGoForward: _canGoForward(screens: screens, currentScreenIndex: 0),
       currentScreenIndex: 0,
     ));
   }
@@ -33,16 +28,11 @@ class SimulationWizardNavigationCubit extends Cubit<SimulationWizardNavigationSt
 
   void _tryGoForward() {
     final prevState = state as InitializedSimulationWizardNavigationState;
-    if (prevState.canGoForward) {
+    if (navPermissions.canGoForward) {
       final int currentIndex = prevState.currentScreenIndex + 1;
       emit(InitializedSimulationWizardNavigationState(
         screens: prevState.screens,
         currentScreenIndex: currentIndex,
-        canGoBack: prevState.canGoBack,
-        canGoForward: _canGoForward(
-          screens: prevState.screens,
-          currentScreenIndex: currentIndex,
-        ),
       ));
     } else {
       _throwCannotGoForwardError();
@@ -59,32 +49,17 @@ class SimulationWizardNavigationCubit extends Cubit<SimulationWizardNavigationSt
 
   void _tryGoBack() {
     final prevState = state as InitializedSimulationWizardNavigationState;
-    if (prevState.canGoBack) {
+    if (navPermissions.canGoBack) {
       final currentIndex = prevState.currentScreenIndex - 1;
       emit(InitializedSimulationWizardNavigationState(
         screens: prevState.screens,
         currentScreenIndex: currentIndex,
-        canGoForward: prevState.canGoForward,
-        canGoBack: _canGoBack(currentScreenIndex: currentIndex),
       ));
     } else {
       _throwCannotGoBackError();
     }
   }
 
-  bool _canGoForward({
-    required List<SimulationWizardScreen> screens,
-    required int currentScreenIndex,
-  }) {
-    return currentScreenIndex + 1 < screens.length;
-  }
-
-  bool _canGoBack({
-    required int currentScreenIndex,
-  }) {
-    return currentScreenIndex > 0;
-  }
-
   void _throwCannotGoForwardError() {
     throw StateError(
         'SimulationWizardCubit cannot go forward in the actual state ($state)');

lib/bloc/simulation_wizard/simulation_wizard_navigation_cubit.dart

@@ -17,16 +17,21 @@ class InitializedSimulationWizardNavigationState extends SimulationWizardNavigat
   const InitializedSimulationWizardNavigationState({
     required this.screens,
     required this.currentScreenIndex,
-    required this.canGoForward,
-    required this.canGoBack,
   });
 
   final List<SimulationWizardScreen> screens;
   final int currentScreenIndex;
-  final bool canGoForward;
-  final bool canGoBack;
+
   SimulationWizardScreen get currentScreen => screens[currentScreenIndex];
 
+  bool get indexAllowsGoingBack {
+    return currentScreenIndex > 0;
+  }
+
+  bool get indexAllowsGoingForward {
+    return currentScreenIndex + 1 < screens.length;
+  }
+
   @override
   List<Object?> get props => [screens, currentScreenIndex];
 }

lib/bloc/simulation_wizard/simulation_wizard_navigation_state.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:provider/provider.dart';
 import 'package:sj_manager/models/db/country.dart';
-import 'package:sj_manager/models/db/db_items_file_system_entity.dart';
+import 'package:sj_manager/models/db/db_file_system_entity_names.dart';
 import 'package:sj_manager/models/db/hill/hill.dart';
 import 'package:sj_manager/models/db/local_db_repo.dart';
 import 'package:sj_manager/repositories/database_editing/db_editing_defaults_repo.dart';
@@ -19,7 +19,6 @@ import 'package:sj_manager/repositories/database_editing/editable_db_items_repo.
 import 'package:sj_manager/setup/set_up_app.dart';
 import 'package:sj_manager/ui/app.dart';
 import 'package:sj_manager/ui/providers/locale_notifier.dart';
-import 'package:sj_manager/ui/reusable_widgets/countries/country_flag.dart';
 import 'package:sj_manager/ui/reusable_widgets/database_item_images/hill_image/hill_image_generating_setup.dart';
 import 'package:sj_manager/ui/reusable_widgets/database_item_images/jumper_image/jumper_image_generating_setup.dart';
 import 'package:sj_manager/ui/screens/main_screen/main_screen.dart';
@@ -120,24 +119,13 @@ void main() async {
                   });
             }),
             Provider(
-              create: (context) => DbItemsFileSystemEntity<MaleJumper>(
-                  userDataFile(pathsCache, 'database/jumpers_male.json')),
-            ),
-            Provider(
-              create: (context) => DbItemsFileSystemEntity<FemaleJumper>(
-                  userDataFile(pathsCache, 'database/jumpers_female.json')),
-            ),
-            Provider(
-              create: (context) => DbItemsFileSystemEntity<Hill>(
-                  userDataFile(pathsCache, 'database/hills.json')),
-            ),
-            Provider(
-              create: (context) => DbItemsFileSystemEntity<Country>(
-                  userDataFile(pathsCache, 'database/countries.json')),
-            ),
-            Provider(
-              create: (context) => DbItemsFileSystemEntity<CountryFlag>(
-                  userDataDirectory(pathsCache, 'database/country_flags')),
+              create: (context) => const DbFileSystemEntityNames(
+                maleJumpers: 'jumpers_male.json',
+                femaleJumpers: 'jumpers_female.json',
+                hills: 'hills.json',
+                countries: 'countries.json',
+                countryFlags: 'country_flags',
+              ),
             ),
             Provider(create: (context) {
               return DbItemsJsonConfiguration<MaleJumper>(

lib/main.dart

@@ -0,0 +1,29 @@
+import 'package:sj_manager/models/db/country.dart';
+import 'package:sj_manager/models/db/hill/hill.dart';
+import 'package:sj_manager/models/db/jumper/jumper.dart';
+import 'package:sj_manager/ui/reusable_widgets/countries/country_flag.dart';
+
+class DbFileSystemEntityNames {
+  const DbFileSystemEntityNames({
+    required this.maleJumpers,
+    required this.femaleJumpers,
+    required this.hills,
+    required this.countries,
+    required this.countryFlags,
+  });
+
+  final String maleJumpers;
+  final String femaleJumpers;
+  final String hills;
+  final String countries;
+  final String countryFlags;
+
+  String byGenericType<T>() {
+    if (T == MaleJumper) return maleJumpers;
+    if (T == FemaleJumper) return femaleJumpers;
+    if (T == Hill) return hills;
+    if (T == Country) return countries;
+    if (T == CountryFlag) return countryFlags;
+    throw StateError('Invalid generic type ($T)');
+  }
+}

lib/models/db/db_file_system_entity_names.dart

@@ -1,11 +1,18 @@
 // ignore_for_file: public_member_api_docs, sort_constructors_first
+import 'dart:io';
+
 import 'package:equatable/equatable.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:sj_manager/enums/db_editable_item_type.dart';
+import 'package:sj_manager/json/db_items_json.dart';
 
 import 'package:sj_manager/models/db/country.dart';
+import 'package:sj_manager/models/db/db_file_system_entity_names.dart';
 import 'package:sj_manager/models/db/hill/hill.dart';
 import 'package:sj_manager/models/db/jumper/jumper.dart';
 import 'package:sj_manager/repositories/countries/countries_repo.dart';
+import 'package:sj_manager/repositories/database_editing/db_items_json_configuration.dart';
 import 'package:sj_manager/repositories/database_editing/db_items_repo.dart';
 import 'package:sj_manager/repositories/database_editing/editable_db_items_repo.dart';
 
@@ -45,6 +52,42 @@ class LocalDbRepo with EquatableMixin {
     throw ArgumentError('Invalid type');
   }
 
+  static Future<LocalDbRepo> fromDirectory(Directory dir,
+      {required BuildContext context}) async {
+    final dbFsEntityNames = context.read<DbFileSystemEntityNames>();
+    File getFile(String fileName) => File('${dir.path}/$fileName');
+
+    final maleJumpers = EditableDbItemsRepo(
+        initial: await loadItemsListFromJsonFile(
+      file: getFile(dbFsEntityNames.maleJumpers),
+      fromJson: context.read<DbItemsJsonConfiguration<MaleJumper>>().fromJson,
+    ));
+    if (!context.mounted) throw StateError('The context is unmounted');
+    final femaleJumpers = EditableDbItemsRepo(
+        initial: await loadItemsListFromJsonFile(
+      file: getFile(dbFsEntityNames.femaleJumpers),
+      fromJson: context.read<DbItemsJsonConfiguration<FemaleJumper>>().fromJson,
+    ));
+    if (!context.mounted) throw StateError('The context is unmounted');
+    final hills = EditableDbItemsRepo(
+        initial: await loadItemsListFromJsonFile(
+      file: getFile(dbFsEntityNames.hills),
+      fromJson: context.read<DbItemsJsonConfiguration<Hill>>().fromJson,
+    ));
+    if (!context.mounted) throw StateError('The context is unmounted');
+    final countries = CountriesRepo(
+        initial: await loadItemsListFromJsonFile(
+      file: getFile(dbFsEntityNames.countries),
+      fromJson: context.read<DbItemsJsonConfiguration<Country>>().fromJson,
+    ));
+    return LocalDbRepo(
+      maleJumpers: maleJumpers,
+      femaleJumpers: femaleJumpers,
+      hills: hills,
+      countries: countries,
+    );
+  }
+
   LocalDbRepo copyWith({
     EditableDbItemsRepo<MaleJumper>? maleJumpers,
     EditableDbItemsRepo<FemaleJumper>? femaleJumpers,