Bloc is now global and responsible for all dates

lib/food_entry/food_entry_bloc.dart

@@ -4,61 +4,96 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:calorimeter/storage/storage.dart';
 import 'package:uuid/uuid.dart';
 
-class FoodEntryBloc extends Bloc<FoodEvent, PageState> {
-  final PageState initialState;
+class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
+  final GlobalEntryState initialState;
   final FoodStorage storage;
-  final DateTime forDate;
 
-  FoodEntryBloc(
-      {required this.initialState,
-      required this.forDate,
-      required this.storage})
+  FoodEntryBloc({required this.initialState, required this.storage})
       : super(initialState) {
+    on<PageBeingInitialized>(handlePageBeingInitialized);
     on<FoodEntryEvent>(handleFoodEntryEvent);
     on<FoodChangedEvent>(handleFoodChangedEvent);
     on<FoodDeletionEvent>(handleDeleteFoodEvent);
     on<BarcodeScanned>(handleBarcodeScannedEvent);
     on<FoodEntryTapped>(handleFoodEntryTapped);
   }
+  void handlePageBeingInitialized(
+      PageBeingInitialized event, Emitter<GlobalEntryState> emit) async {
+    var newList = await storage.getEntriesForDate(event.forDate);
+    state.foodEntries.addAll({event.forDate: newList});
+
+    emit(GlobalEntryState(foodEntries: state.foodEntries));
+  }
 
   void handleFoodEntryEvent(
-      FoodEntryEvent event, Emitter<PageState> emit) async {
-    PageState newState = PageState.from(state);
-    newState.addEntry(event.entry);
+      FoodEntryEvent event, Emitter<GlobalEntryState> emit) async {
+    var entriesForDate = state.foodEntries[event.forDate];
+    entriesForDate ??= [];
 
-    await storage.writeEntriesForDate(forDate, newState.foodEntries);
+    entriesForDate.add(event.entry);
+
+    await storage.writeEntriesForDate(event.forDate, entriesForDate);
     storage.addFoodEntryToLookupDatabase(event.entry);
 
-    emit(newState);
+    // this is just checking if writing to the database worked
+    // can be optimized out by just emitting newState
+    var newList = await storage.getEntriesForDate(event.forDate);
+
+    var newFoodEntries = state.foodEntries;
+    newFoodEntries.addAll({event.forDate: newList});
+
+    emit(GlobalEntryState(foodEntries: newFoodEntries));
   }
 
   void handleFoodChangedEvent(
-      FoodChangedEvent event, Emitter<PageState> emit) async {
-    var entries = state.foodEntries;
-    var index = entries.indexWhere((entry) {
+      FoodChangedEvent event, Emitter<GlobalEntryState> emit) async {
+    var entriesForDate = state.foodEntries[event.forDate];
+    if (entriesForDate == null) return;
+
+    var index = entriesForDate.indexWhere((entry) {
       return entry.id == event.newEntry.id;
     });
 
-    entries.removeAt(index);
-    entries.insert(index, event.newEntry);
+    entriesForDate.removeAt(index);
+    entriesForDate.insert(index, event.newEntry);
 
-    await storage.writeEntriesForDate(forDate, entries);
+    await storage.writeEntriesForDate(event.forDate, entriesForDate);
     storage.addFoodEntryToLookupDatabase(event.newEntry);
 
-    emit(PageState(foodEntries: entries));
+    // this is just checking if writing to the database worked
+    // can be optimized out by just emitting newState
+    var newList = await storage.getEntriesForDate(event.forDate);
+
+    var newFoodEntries = state.foodEntries;
+    newFoodEntries.addAll({event.forDate: newList});
+
+    emit(GlobalEntryState(foodEntries: newFoodEntries));
   }
 
   void handleDeleteFoodEvent(
-      FoodDeletionEvent event, Emitter<PageState> emit) async {
-    state.foodEntries.removeWhere((entry) => entry.id == event.entryID);
+      FoodDeletionEvent event, Emitter<GlobalEntryState> emit) async {
+    var entriesForDate = state.foodEntries[event.forDate];
+    if (entriesForDate == null) return;
 
-    await storage.writeEntriesForDate(forDate, state.foodEntries);
+    entriesForDate.removeWhere((entry) => entry.id == event.entryID);
 
-    emit(PageState.from(state));
+    await storage.writeEntriesForDate(event.forDate, entriesForDate);
+
+    // this is just checking if writing to the database worked
+    // can be optimized out by just emitting newState
+    var newList = await storage.getEntriesForDate(event.forDate);
+
+    var newFoodEntries = state.foodEntries;
+    newFoodEntries.addAll({event.forDate: newList});
+
+    emit(GlobalEntryState(foodEntries: newFoodEntries));
   }
 
   void handleBarcodeScannedEvent(
-      BarcodeScanned event, Emitter<PageState> emit) async {
+      BarcodeScanned event, Emitter<GlobalEntryState> emit) async {
+    var entriesForDate = state.foodEntries[event.forDate];
+    if (entriesForDate == null) return;
+
     var client = FoodFactLookupClient();
     var scanResult = await event.scanResultFuture;
 
@@ -66,14 +101,13 @@ class FoodEntryBloc extends Bloc<FoodEvent, PageState> {
       return;
     }
     if (scanResult.type == ResultType.Error) {
-      emit(PageState(
+      emit(GlobalEntryState(
           foodEntries: state.foodEntries,
           errorString: "Fehler beim Scannen des Barcodes"));
       return;
     }
     var responseFuture = client.retrieveFoodInfo(scanResult.rawContent);
 
-    List<FoodEntryState> newList = List.from(state.foodEntries);
     var newEntryWaiting = FoodEntryState(
       kcalPer100: 0,
       name: "",
@@ -81,11 +115,13 @@ class FoodEntryBloc extends Bloc<FoodEvent, PageState> {
       waitingForNetwork: true,
       isSelected: false,
     );
-    newList.add(newEntryWaiting);
-    emit(PageState(foodEntries: newList));
+    entriesForDate.add(newEntryWaiting);
+    var newFoodEntries = state.foodEntries;
+    newFoodEntries.addAll({event.forDate: entriesForDate});
+    emit(GlobalEntryState(foodEntries: newFoodEntries));
 
     await responseFuture.then((response) async {
-      var index = newList
+      var index = entriesForDate
           .indexWhere((entryState) => entryState.id == newEntryWaiting.id);
 
       // element not found (was deleted previously)
@@ -94,25 +130,23 @@ class FoodEntryBloc extends Bloc<FoodEvent, PageState> {
       }
 
       if (response.status == FoodFactResponseStatus.barcodeNotFound) {
-        List<FoodEntryState> listWithEntryRemoved =
-            List.from(state.foodEntries);
-        listWithEntryRemoved
-            .removeWhere((entry) => entry.id == newEntryWaiting.id);
+        entriesForDate.removeWhere((entry) => entry.id == newEntryWaiting.id);
+        var newFoodEntries = state.foodEntries;
+        newFoodEntries.addAll({event.forDate: entriesForDate});
 
-        emit(PageState(
-            foodEntries: listWithEntryRemoved,
+        emit(GlobalEntryState(
+            foodEntries: newFoodEntries,
             errorString: "Barcode konnte nicht gefunden werden."));
         return;
       }
       if (response.status ==
           FoodFactResponseStatus.foodFactServerNotReachable) {
-        List<FoodEntryState> listWithEntryRemoved =
-            List.from(state.foodEntries);
-        listWithEntryRemoved
-            .removeWhere((entry) => entry.id == newEntryWaiting.id);
+        entriesForDate.removeWhere((entry) => entry.id == newEntryWaiting.id);
+        var newFoodEntries = state.foodEntries;
+        newFoodEntries.addAll({event.forDate: entriesForDate});
 
-        emit(PageState(
-            foodEntries: listWithEntryRemoved,
+        emit(GlobalEntryState(
+            foodEntries: newFoodEntries,
             errorString: "OpenFoodFacts-Server konnte nicht erreicht werden."));
         return;
       }
@@ -125,91 +159,114 @@ class FoodEntryBloc extends Bloc<FoodEvent, PageState> {
         isSelected: false,
       );
 
-      newList.removeAt(index);
-      newList.insert(index, newEntryFinishedWaiting);
+      entriesForDate.removeAt(index);
+      entriesForDate.insert(index, newEntryFinishedWaiting);
 
-      await storage.writeEntriesForDate(forDate, newList);
+      await storage.writeEntriesForDate(event.forDate, entriesForDate);
       storage.addFoodEntryToLookupDatabase(newEntryFinishedWaiting);
 
-      emit(PageState(foodEntries: newList));
+      var entriesFromStorage = await storage.getEntriesForDate(event.forDate);
+      var newFoodEntries = state.foodEntries;
+      newFoodEntries.addAll({event.forDate: entriesFromStorage});
+
+      emit(GlobalEntryState(foodEntries: newFoodEntries));
     });
   }
 
   void handleFoodEntryTapped(
-      FoodEntryTapped event, Emitter<PageState> emit) async {
+      FoodEntryTapped event, Emitter<GlobalEntryState> emit) async {
+    var entriesForDate = state.foodEntries[event.forDate];
+    if (entriesForDate == null) return;
+
     var oldStateOfTappedEntry = event.entry.isSelected;
 
-    for (var entry in state.foodEntries) {
+    for (var entry in entriesForDate) {
       entry.isSelected = false;
     }
 
-    var selectedEntry = state.foodEntries.firstWhere((entry) {
+    var selectedEntry = entriesForDate.firstWhere((entry) {
       return entry.id == event.entry.id;
     });
 
     selectedEntry.isSelected = !oldStateOfTappedEntry;
 
-    emit(PageState(foodEntries: state.foodEntries));
+    emit(GlobalEntryState(foodEntries: state.foodEntries));
   }
 }
 
-class FoodEvent {}
+class FoodEvent {
+  final DateTime forDate;
+
+  FoodEvent({required this.forDate});
+}
+
+class PageBeingInitialized extends FoodEvent {
+  PageBeingInitialized({required super.forDate});
+}
 
 class FoodEntryEvent extends FoodEvent {
   final FoodEntryState entry;
 
-  FoodEntryEvent({required this.entry});
+  FoodEntryEvent({required this.entry, required super.forDate});
 }
 
 class FoodChangedEvent extends FoodEvent {
   final FoodEntryState newEntry;
 
-  FoodChangedEvent({required this.newEntry});
+  FoodChangedEvent({required this.newEntry, required super.forDate});
 }
 
 class FoodDeletionEvent extends FoodEvent {
   final String entryID;
 
-  FoodDeletionEvent({required this.entryID});
+  FoodDeletionEvent({required this.entryID, required super.forDate});
 }
 
 class BarcodeScanned extends FoodEvent {
   final Future<ScanResult> scanResultFuture;
 
-  BarcodeScanned({required this.scanResultFuture});
+  BarcodeScanned({required this.scanResultFuture, required super.forDate});
 }
 
 class FoodEntryTapped extends FoodEvent {
   final FoodEntryState entry;
 
-  FoodEntryTapped({required this.entry});
+  FoodEntryTapped({required this.entry, required super.forDate});
 }
 
 /// This is the state for one date/page
-class PageState {
-  final List<FoodEntryState> foodEntries;
+class GlobalEntryState {
+  final Map<DateTime, List<FoodEntryState>> foodEntries;
   final String? errorString;
 
-  PageState({required this.foodEntries, this.errorString});
+  GlobalEntryState({required this.foodEntries, this.errorString});
 
-  factory PageState.init() {
-    return PageState(foodEntries: []);
+  factory GlobalEntryState.init() {
+    return GlobalEntryState(foodEntries: {});
   }
 
-  static from(PageState state) {
-    return PageState(foodEntries: state.foodEntries);
+  static from(GlobalEntryState state) {
+    return GlobalEntryState(foodEntries: state.foodEntries);
   }
 
-  void addEntry(FoodEntryState entry) {
-    foodEntries.add(entry);
+  bool addEntry(FoodEntryState entry, DateTime date) {
+    var list = foodEntries[date];
+
+    if (list == null) {
+      return false;
+    }
+
+    list.add(entry);
+
+    return true;
   }
 }
 
 class FoodEntryState {
+  final String id;
   final String name;
   final int mass;
   final int kcalPer100;
-  final String id;
   final bool waitingForNetwork;
   bool isSelected;
 

lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:calorimeter/food_entry/food_entry_bloc.dart';
 import 'package:calorimeter/perdate/perdate_pageview.dart';
 import 'package:calorimeter/storage/storage.dart';
 import 'package:calorimeter/utils/settings_bloc.dart';
@@ -7,6 +8,9 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:go_router/go_router.dart';
 
+List<FoodEntryState> entriesForToday = [];
+DateTime timeNow = DateTime.now();
+
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
@@ -14,6 +18,16 @@ void main() async {
 
   var storage = await FoodStorage.create();
   await storage.buildFoodLookupDatabase();
+  timeNow = DateTime.now().copyWith(
+      hour: 0,
+      isUtc: true,
+      minute: 0,
+      second: 0,
+      millisecond: 0,
+      microsecond: 0);
+
+  entriesForToday = await storage.getEntriesForDate(timeNow);
+
   var kcalLimit = await storage.readLimit();
   var brightness = await storage.readBrightness();
 
@@ -42,6 +56,13 @@ class MainApp extends StatelessWidget {
     return SafeArea(
       child: MultiBlocProvider(
         providers: [
+          BlocProvider(
+            create: (context) => FoodEntryBloc(
+              storage: storage,
+              initialState:
+                  GlobalEntryState(foodEntries: {timeNow: entriesForToday}),
+            ),
+          ),
           BlocProvider(
             create: (context) => SettingsDataBloc(
                 SettingsState(kcalLimit: kcalLimit),

lib/perdate/entry_list.dart

@@ -6,9 +6,11 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 
 class FoodEntryList extends StatelessWidget {
   final List<FoodEntryState> entries;
+  final DateTime date;
 
   const FoodEntryList({
     required this.entries,
+    required this.date,
     super.key,
   });
 
@@ -25,7 +27,7 @@ class FoodEntryList extends StatelessWidget {
                 onAdd: (context, entry) {
                   context
                       .read<FoodEntryBloc>()
-                      .add(FoodEntryEvent(entry: entry));
+                      .add(FoodEntryEvent(entry: entry, forDate: date));
                 },
               ),
               const SizedBox(height: 75),
@@ -40,19 +42,19 @@ class FoodEntryList extends StatelessWidget {
               key: ValueKey(entries[entryIndex].id),
               entry: entries[entryIndex],
               onDelete: (_, id) {
-                context.read<FoodEntryBloc>().add(FoodDeletionEvent(
-                      entryID: id,
-                    ));
+                context
+                    .read<FoodEntryBloc>()
+                    .add(FoodDeletionEvent(entryID: id, forDate: date));
               },
               onChange: (_, changedEntry) {
-                context
-                    .read<FoodEntryBloc>()
-                    .add(FoodChangedEvent(newEntry: changedEntry));
+                context.read<FoodEntryBloc>().add(
+                      FoodChangedEvent(newEntry: changedEntry, forDate: date),
+                    );
               },
               onTap: (_, tappedEntry) {
-                context
-                    .read<FoodEntryBloc>()
-                    .add(FoodEntryTapped(entry: tappedEntry));
+                context.read<FoodEntryBloc>().add(
+                      FoodEntryTapped(entry: tappedEntry, forDate: date),
+                    );
               },
             ),
             const Divider(),

lib/perdate/perdate_pageview.dart

@@ -61,7 +61,7 @@ class _PerDatePageviewState extends State<PerDatePageview> {
 
             return PerDateWidget(
                 key: ValueKey(dateToBuildWidgetFor.toString()),
-                date: dateToBuildWidgetFor,
+                date: dateToBuildWidgetFor.copyWith(isUtc: true),
                 onDateSelected: (dateSelected) {
                   if (dateSelected == null) return;
 

lib/perdate/perdate_widget.dart

@@ -11,7 +11,6 @@ import 'package:calorimeter/utils/theme_switcher_button.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:intl/intl.dart';
-import 'package:provider/provider.dart';
 
 class PerDateWidget extends StatefulWidget {
   final DateTime date;
@@ -26,16 +25,13 @@ class PerDateWidget extends StatefulWidget {
 class _PerDateWidgetState extends State<PerDateWidget>
     with AutomaticKeepAliveClientMixin<PerDateWidget> {
   late FoodStorage storage;
-  late Future<List<FoodEntryState>> entriesFuture;
   List<FoodEntryState> entries = [];
 
   @override
   void initState() {
-    storage = FoodStorage.getInstance();
-    entriesFuture = storage.getEntriesForDate(widget.date);
-    entriesFuture.then((val) {
-      entries = val;
-    });
+    context
+        .read<FoodEntryBloc>()
+        .add(PageBeingInitialized(forDate: widget.date));
     super.initState();
   }
 
@@ -48,63 +44,51 @@ class _PerDateWidgetState extends State<PerDateWidget>
   Widget build(BuildContext context) {
     super.build(context);
 
-    return FutureBuilder(
-        future: entriesFuture,
-        builder: (context, snapshot) {
-          return snapshot.connectionState != ConnectionState.done
-              ? const Center(child: CircularProgressIndicator())
-              : MultiProvider(
-                  providers: [
-                    BlocProvider(
-                      create: (context) => FoodEntryBloc(
-                        initialState: PageState(foodEntries: entries),
-                        storage: storage,
-                        forDate: widget.date,
-                      ),
-                    )
-                  ],
-                  child: BlocConsumer<FoodEntryBloc, PageState>(
-                    listener: (context, pageState) {
-                      if (pageState.errorString != null) {
-                        showNewSnackbarWith(context, pageState.errorString!);
-                      }
-                    },
-                    builder: (context, pageState) {
-                      return Scaffold(
-                          appBar: AppBar(
-                            title: Text(
-                                DateFormat.yMMMMd('de').format(widget.date)),
-                            actions: const [ThemeSwitcherButton()],
-                          ),
-                          body: FoodEntryList(entries: pageState.foodEntries),
-                          bottomNavigationBar: BottomAppBar(
-                              shape: const RectangularNotchShape(),
-                              color: Theme.of(context).colorScheme.secondary,
-                              child: SumWidget(
-                                  foodEntries: pageState.foodEntries)),
-                          drawer: const AppDrawer(),
-                          floatingActionButton: OverflowBar(children: [
-                            ScanFoodFloatingButton(
-                              onPressed: () {
-                                var result = BarcodeScanner.scan();
-                                context.read<FoodEntryBloc>().add(
-                                    BarcodeScanned(scanResultFuture: result));
-                              },
-                            ),
-                            const SizedBox(width: 8),
-                            CalendarFloatingButton(
-                              startFromDate: widget.date,
-                              onDateSelected: (dateSelected) {
-                                widget.onDateSelected(dateSelected);
-                              },
-                            ),
-                          ]),
-                          floatingActionButtonLocation:
-                              FloatingActionButtonLocation.endDocked);
-                    },
-                  ),
-                );
-        });
+    return BlocConsumer<FoodEntryBloc, GlobalEntryState>(
+      listener: (context, pageState) {
+        if (pageState.errorString != null) {
+          showNewSnackbarWith(context, pageState.errorString!);
+        }
+      },
+      builder: (context, globalState) {
+        return Scaffold(
+            appBar: AppBar(
+              title: Text(DateFormat.yMMMMd('de').format(widget.date)),
+              actions: const [ThemeSwitcherButton()],
+            ),
+            body: FoodEntryList(
+                entries: globalState.foodEntries[widget.date] ?? [],
+                date: widget.date),
+            bottomNavigationBar: BottomAppBar(
+                shape: const RectangularNotchShape(),
+                color: Theme.of(context).colorScheme.secondary,
+                child: SumWidget(
+                    foodEntries: globalState.foodEntries[widget.date] ?? [])),
+            drawer: const AppDrawer(),
+            floatingActionButton: OverflowBar(children: [
+              ScanFoodFloatingButton(
+                onPressed: () {
+                  var result = BarcodeScanner.scan();
+                  context.read<FoodEntryBloc>().add(
+                        BarcodeScanned(
+                          scanResultFuture: result,
+                          forDate: widget.date,
+                        ),
+                      );
+                },
+              ),
+              const SizedBox(width: 8),
+              CalendarFloatingButton(
+                startFromDate: widget.date,
+                onDateSelected: (dateSelected) {
+                  widget.onDateSelected(dateSelected);
+                },
+              ),
+            ]),
+            floatingActionButtonLocation:
+                FloatingActionButtonLocation.endDocked);
+      },
+    );
   }
 
   void showNewSnackbarWith(BuildContext context, String text) {