lib/food_entry/food_entry_bloc.dart

@@ -2,8 +2,11 @@
 /* Copyright (C) 2024 Marco Groß <mgross@sw-gross.de> */
 import 'package:barcode_scan2/barcode_scan2.dart';
 import 'package:calorimeter/food_scan/food_fact_lookup.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:calorimeter/storage/storage.dart';
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:uuid/uuid.dart';
 
 class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
@@ -16,8 +19,9 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
     on<FoodEntryEvent>(handleFoodEntryEvent);
     on<FoodChangedEvent>(handleFoodChangedEvent);
     on<FoodDeletionEvent>(handleDeleteFoodEvent);
-    on<BarcodeScanned>(handleBarcodeScannedEvent);
+    on<BarcodeAboutToBeScanned>(handleBarcodeScannedEvent);
     on<FoodEntryTapped>(handleFoodEntryTapped);
+    on<PermissionException>(handlePermissionException);
   }
   void handlePageBeingInitialized(
       PageBeingInitialized event, Emitter<GlobalEntryState> emit) async {
@@ -92,12 +96,24 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
   }
 
   void handleBarcodeScannedEvent(
-      BarcodeScanned event, Emitter<GlobalEntryState> emit) async {
+      BarcodeAboutToBeScanned event, Emitter<GlobalEntryState> emit) async {
+    ScanResult scanResult = ScanResult();
+    try {
+      scanResult = await BarcodeScanner.scan();
+    } on PlatformException catch (e) {
+      if (e.code == BarcodeScanner.cameraAccessDenied) {
+        emit(GlobalEntryState(
+            foodEntries: state.foodEntries,
+            appError:
+                GlobalAppError(GlobalAppErrorType.errCameraPermissionDenied)));
+      }
+      return;
+    }
+
     var entriesForDate = state.foodEntries[event.forDate];
     if (entriesForDate == null) return;
 
     var client = FoodFactLookupClient();
-    var scanResult = await event.scanResultFuture;
 
     if (scanResult.type == ResultType.Cancelled) {
       return;
@@ -105,7 +121,7 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
     if (scanResult.type == ResultType.Error) {
       emit(GlobalEntryState(
           foodEntries: state.foodEntries,
-          errorString: "Fehler beim Scannen des Barcodes"));
+          appError: GlobalAppError(GlobalAppErrorType.errGeneralError)));
       return;
     }
     var responseFuture = client.retrieveFoodInfo(scanResult.rawContent);
@@ -117,6 +133,7 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
       waitingForNetwork: true,
       isSelected: false,
     );
+
     entriesForDate.add(newEntryWaiting);
     var newFoodEntries = state.foodEntries;
     newFoodEntries.addAll({event.forDate: entriesForDate});
@@ -138,7 +155,7 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
 
         emit(GlobalEntryState(
             foodEntries: newFoodEntries,
-            errorString: "Barcode konnte nicht gefunden werden."));
+            appError: GlobalAppError(GlobalAppErrorType.errbarcodeNotFound)));
         return;
       }
       if (response.status ==
@@ -149,14 +166,19 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
 
         emit(GlobalEntryState(
             foodEntries: newFoodEntries,
-            errorString: "OpenFoodFacts-Server konnte nicht erreicht werden."));
+            appError:
+                GlobalAppError(GlobalAppErrorType.errServerNotReachable)));
         return;
       }
 
+      int kcalToDisplay = response.food?.kcalPer100g ?? 0;
+      if (response.food?.kcalPer100gPrepared != 0) {
+        kcalToDisplay = response.food?.kcalPer100gPrepared ?? 0;
+      }
       var newEntryFinishedWaiting = FoodEntryState(
         name: response.food?.name ?? "",
         mass: response.food?.mass ?? 0,
-        kcalPer100: response.food?.kcalPer100g ?? 0,
+        kcalPer100: kcalToDisplay,
         waitingForNetwork: false,
         isSelected: false,
       );
@@ -194,6 +216,14 @@ class FoodEntryBloc extends Bloc<FoodEvent, GlobalEntryState> {
 
     emit(GlobalEntryState(foodEntries: state.foodEntries));
   }
+
+  void handlePermissionException(
+      PermissionException event, Emitter<GlobalEntryState> emit) async {
+    emit(GlobalEntryState(
+        foodEntries: state.foodEntries,
+        appError:
+            GlobalAppError(GlobalAppErrorType.errCameraPermissionDenied)));
+  }
 }
 
 class FoodEvent {
@@ -224,10 +254,8 @@ class FoodDeletionEvent extends FoodEvent {
   FoodDeletionEvent({required this.entryID, required super.forDate});
 }
 
-class BarcodeScanned extends FoodEvent {
+class BarcodeAboutToBeScanned extends FoodEvent {
-  final Future<ScanResult> scanResultFuture;
+  BarcodeAboutToBeScanned({required super.forDate});
-
-  BarcodeScanned({required this.scanResultFuture, required super.forDate});
 }
 
 class FoodEntryTapped extends FoodEvent {
@@ -236,12 +264,16 @@ class FoodEntryTapped extends FoodEvent {
   FoodEntryTapped({required this.entry, required super.forDate});
 }
 
+class PermissionException extends FoodEvent {
+  PermissionException({required super.forDate});
+}
+
 /// This is the state for one date/page
 class GlobalEntryState {
   final Map<DateTime, List<FoodEntryState>> foodEntries;
-  final String? errorString;
+  final GlobalAppError? appError;
 
-  GlobalEntryState({required this.foodEntries, this.errorString});
+  GlobalEntryState({required this.foodEntries, this.appError});
 
   factory GlobalEntryState.init() {
     return GlobalEntryState(foodEntries: {});
@@ -305,3 +337,29 @@ class FoodEntryState {
     return '$id,"$name",$mass,$kcalPer100';
   }
 }
+
+enum GlobalAppErrorType {
+  errGeneralError,
+  errbarcodeNotFound,
+  errServerNotReachable,
+  errCameraPermissionDenied
+}
+
+class GlobalAppError {
+  final GlobalAppErrorType type;
+
+  GlobalAppError(this.type);
+
+  String toErrorString(BuildContext context) {
+    switch (type) {
+      case GlobalAppErrorType.errGeneralError:
+        return AppLocalizations.of(context)!.errGeneralBarcodeError;
+      case GlobalAppErrorType.errbarcodeNotFound:
+        return AppLocalizations.of(context)!.errBarcodeNotFound;
+      case GlobalAppErrorType.errServerNotReachable:
+        return AppLocalizations.of(context)!.errServerNotReachable;
+      case GlobalAppErrorType.errCameraPermissionDenied:
+        return AppLocalizations.of(context)!.errPermissionNotGranted;
+    }
+  }
+}

lib/food_scan/food_fact_lookup.dart

@@ -47,15 +47,21 @@ class FoodFactLookupClient {
 class FoodFactModel {
   final String name;
   final int kcalPer100g;
+  final int kcalPer100gPrepared;
   final int mass;
 
   FoodFactModel({
     required this.name,
     required this.mass,
     required this.kcalPer100g,
+    required this.kcalPer100gPrepared,
   });
 
   factory FoodFactModel.fromJson(Map<String, dynamic> json) {
+    int kcalPer100g = json['product']['nutriments']['energy-kcal_100g'] ?? 0;
+    int kcalPer100gPrepared =
+        json['product']['nutriments']['energy-kcal_prepared_100g'] ?? 0;
+
     String quantityString = json['product']['product_quantity'] ?? "0";
     int quantity;
 
@@ -66,8 +72,9 @@ class FoodFactModel {
     }
 
     return FoodFactModel(
-        name: json['product']['product_name'],
+        name: json['product']['product_name'] ?? "",
-        kcalPer100g: json['product']['nutriments']['energy-kcal_100g'],
+        kcalPer100g: kcalPer100g,
+        kcalPer100gPrepared: kcalPer100gPrepared,
         mass: quantity);
   }
 }

lib/l10n/app_de.arb

@@ -10,5 +10,9 @@
   "yourSettings": "Deine persönlichen Einstellungen",
   "dayLimit": "Kalorienlimit pro Tag",
   "errAmountNotANumber": "Menge muss eine Zahl sein",
-  "errKcalNotANumber": "kcal muss eine Zahl sein"
+  "errKcalNotANumber": "kcal muss eine Zahl sein",
+  "errGeneralBarcodeError": "Fehler beim Scannen des Barcodes",
+  "errBarcodeNotFound": "Barcode konnte nicht gefunden werden.",
+  "errServerNotReachable": "OpenFoodFacts-Server konnte nicht erreicht werden.",
+  "errPermissionNotGranted": "Kamera-Berechtigung muss aktiviert werden."
 }

lib/l10n/app_en.arb

@@ -10,5 +10,9 @@
   "yourSettings": "Your personal settings",
   "dayLimit": "Calorie limit per day",
   "errAmountNotANumber": "Amount must be a number",
-  "errKcalNotANumber": "kcal must be a number"
+  "errKcalNotANumber": "kcal must be a number",
+  "errGeneralBarcodeError": "Error while scanning the barcode.",
+  "errBarcodeNotFound": "Barcode could not be found.",
+  "errServerNotReachable": "OpenFoodFacts server could not be reached.",
+  "errPermissionNotGranted": "Permission to use camera must be given."
 }

lib/perdate/perdate_pageview_controller.dart

@@ -2,7 +2,6 @@
 /* Copyright (C) 2024 Marco Groß <mgross@sw-gross.de> */
 import 'dart:developer';
 
-import 'package:barcode_scan2/barcode_scan2.dart';
 import 'package:calorimeter/food_entry/food_entry_bloc.dart';
 import 'package:calorimeter/perdate/perdate_pageview.dart';
 import 'package:calorimeter/utils/app_drawer.dart';
@@ -77,10 +76,8 @@ class PerDatePageViewController extends StatelessWidget {
             floatingActionButton: OverflowBar(children: [
               ScanFoodFAB(
                 onPressed: () {
-                  var result = BarcodeScanner.scan();
                   context.read<FoodEntryBloc>().add(
-                        BarcodeScanned(
+                        BarcodeAboutToBeScanned(
-                          scanResultFuture: result,
                           forDate: context
                               .read<PageViewStateProvider>()
                               .displayedDate,

lib/perdate/perdate_widget.dart

@@ -29,8 +29,8 @@ class _PerDateWidgetState extends State<PerDateWidget>
 
     return BlocConsumer<FoodEntryBloc, GlobalEntryState>(
       listener: (context, pageState) {
-        if (pageState.errorString != null) {
+        if (pageState.appError != null) {
-          showNewSnackbarWith(context, pageState.errorString!);
+          showNewSnackbarWith(context, pageState.appError!);
         }
       },
       builder: (context, pageState) {
@@ -41,9 +41,10 @@ class _PerDateWidgetState extends State<PerDateWidget>
     );
   }
 
-  void showNewSnackbarWith(BuildContext context, String text) {
+  void showNewSnackbarWith(BuildContext context, GlobalAppError error) {
-    var snackbar =
+    var snackbar = ErrorSnackbar(
-        ErrorSnackbar(colorScheme: Theme.of(context).colorScheme, text: text);
+        colorScheme: Theme.of(context).colorScheme,
+        text: error.toErrorString(context));
 
     ScaffoldMessenger.of(context)
       ..removeCurrentSnackBar()

pubspec.lock

@@ -5,31 +5,31 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: f256b0c0ba6c7577c15e2e4e114755640a875e885099367bf6e012b19314c834
+      sha256: "16e298750b6d0af7ce8a3ba7c18c69c3785d11b15ec83f6dcd0ad2a0009b3cab"
       url: "https://pub.dev"
     source: hosted
-    version: "72.0.0"
+    version: "76.0.0"
   _macros:
     dependency: transitive
     description: dart
     source: sdk
-    version: "0.3.2"
+    version: "0.3.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: b652861553cd3990d8ed361f7979dc6d7053a9ac8843fa73820ab68ce5410139
+      sha256: "1f14db053a8c23e260789e9b0980fa27f2680dd640932cae5e1137cce0e46e1e"
       url: "https://pub.dev"
     source: hosted
-    version: "6.7.0"
+    version: "6.11.0"
   archive:
     dependency: transitive
     description:
       name: archive
-      sha256: cb6a278ef2dbb298455e1a713bda08524a175630ec643a242c399c932a0a1f7d
+      sha256: "6199c74e3db4fbfbd04f66d739e72fe11c8a8957d5f219f1f4482dbde6420b5a"
       url: "https://pub.dev"
     source: hosted
-    version: "3.6.1"
+    version: "4.0.2"
   args:
     dependency: transitive
     description:
@@ -106,10 +106,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: a1ace0a119f20aabc852d165077c036cd864315bd99b7eaa10a60100341941bf
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.0"
   convert:
     dependency: transitive
     description:
@@ -238,26 +238,26 @@ packages:
     dependency: transitive
     description:
       name: http_multi_server
-      sha256: "97486f20f9c2f7be8f514851703d0119c3596d14ea63227af6f7a481ef2b2f8b"
+      sha256: aa6199f908078bb1c5efb8d8638d4ae191aac11b311132c3ef48ce352fb52ef8
       url: "https://pub.dev"
     source: hosted
-    version: "3.2.1"
+    version: "3.2.2"
   http_parser:
     dependency: transitive
     description:
       name: http_parser
-      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      sha256: "76d306a1c3afb33fe82e2bbacad62a61f409b5634c915fceb0d799de1a913360"
       url: "https://pub.dev"
     source: hosted
-    version: "4.0.2"
+    version: "4.1.1"
   image:
     dependency: transitive
     description:
       name: image
-      sha256: f31d52537dc417fdcde36088fdf11d191026fd5e4fae742491ebd40e5a8bea7d
+      sha256: "8346ad4b5173924b5ddddab782fc7d8a6300178c8b1dc427775405a01701c4a6"
       url: "https://pub.dev"
     source: hosted
-    version: "4.3.0"
+    version: "4.5.2"
   intl:
     dependency: "direct main"
     description:
@@ -270,10 +270,10 @@ packages:
     dependency: transitive
     description:
       name: io
-      sha256: "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e"
+      sha256: dfd5a80599cf0165756e3181807ed3e77daf6dd4137caaad72d0b7931597650b
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   js:
     dependency: transitive
     description:
@@ -294,18 +294,18 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: "3f87a60e8c63aecc975dda1ceedbc8f24de75f09e4856ea27daf8958f2f0ce05"
+      sha256: "7bb2830ebd849694d1ec25bf1f44582d6ac531a57a365a803a6034ff751d2d06"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.5"
+    version: "10.0.7"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
       name: leak_tracker_flutter_testing
-      sha256: "932549fb305594d82d7183ecd9fa93463e9914e1b67cacc34bc40906594a1806"
+      sha256: "9491a714cca3667b60b5c420da8217e6de0d1ba7a5ec322fab01758f6998f379"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.5"
+    version: "3.0.8"
   leak_tracker_testing:
     dependency: transitive
     description:
@@ -318,10 +318,10 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: "3315600f3fb3b135be672bf4a178c55f274bebe368325ae18462c89ac1e3b413"
+      sha256: c35bb79562d980e9a453fc715854e1ed39e24e7d0297a880ef54e17f9874a9d7
       url: "https://pub.dev"
     source: hosted
-    version: "5.0.0"
+    version: "5.1.1"
   logging:
     dependency: transitive
     description:
@@ -334,10 +334,10 @@ packages:
     dependency: transitive
     description:
       name: macros
-      sha256: "0acaed5d6b7eab89f63350bccd82119e6c602df0f391260d0e32b5e23db79536"
+      sha256: "1d9e801cd66f7ea3663c45fc708450db1fa57f988142c64289142c9b7ee80656"
       url: "https://pub.dev"
     source: hosted
-    version: "0.1.2-main.4"
+    version: "0.1.3-main.0"
   matcher:
     dependency: transitive
     description:
@@ -390,10 +390,10 @@ packages:
     dependency: transitive
     description:
       name: package_config
-      sha256: "1c5b77ccc91e4823a5af61ee74e6b972db1ef98c2ff5a18d3161c982a55448bd"
+      sha256: "92d4488434b520a62570293fbd33bb556c7d49230791c1b4bbd973baf6d2dc67"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   path:
     dependency: transitive
     description:
@@ -414,10 +414,10 @@ packages:
     dependency: transitive
     description:
       name: path_provider_android
-      sha256: "8c4967f8b7cb46dc914e178daa29813d83ae502e0529d7b0478330616a691ef7"
+      sha256: "4adf4fd5423ec60a29506c76581bc05854c55e3a0b72d35bb28d661c9686edf2"
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.14"
+    version: "2.2.15"
   path_provider_foundation:
     dependency: transitive
     description:
@@ -482,6 +482,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.1"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: a0117dc2167805aa9125b82eee515cc891819bac2f538c83646d355b16f58b9a
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.1"
   protobuf:
     dependency: transitive
     description:
@@ -502,10 +510,10 @@ packages:
     dependency: transitive
     description:
       name: pub_semver
-      sha256: "40d3ab1bbd474c4c2328c91e3a7df8c6dd629b79ece4c4bd04bee496a224fb0c"
+      sha256: "7b3cfbf654f3edd0c6298ecd5be782ce997ddf0e00531b9464b55245185bbbbd"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.4"
+    version: "2.1.5"
   settings_ui:
     dependency: "direct main"
     description:
@@ -518,10 +526,10 @@ packages:
     dependency: transitive
     description:
       name: shelf
-      sha256: ad29c505aee705f41a4d8963641f91ac4cee3c8fad5947e033390a7bd8180fa4
+      sha256: e7dd780a7ffb623c57850b33f43309312fc863fb6aa3d276a754bb299839ef12
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.1"
+    version: "1.4.2"
   shelf_packages_handler:
     dependency: transitive
     description:
@@ -550,7 +558,7 @@ packages:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_map_stack_trace:
     dependency: transitive
     description:
@@ -563,10 +571,10 @@ packages:
     dependency: transitive
     description:
       name: source_maps
-      sha256: "708b3f6b97248e5781f493b765c3337db11c5d2c81c3094f10904bfa8004c703"
+      sha256: "190222579a448b03896e0ca6eca5998fa810fda630c1d65e2f78b3f638f54812"
       url: "https://pub.dev"
     source: hosted
-    version: "0.10.12"
+    version: "0.10.13"
   source_span:
     dependency: transitive
     description:
@@ -587,10 +595,10 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      sha256: "9f47fd3630d76be3ab26f0ee06d213679aa425996925ff3feffdec504931c377"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.1"
+    version: "1.12.0"
   stream_channel:
     dependency: transitive
     description:
@@ -603,10 +611,10 @@ packages:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      sha256: "688af5ed3402a4bde5b3a6c15fd768dbf2621a614950b17f04626c431ab3c4c3"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   term_glyph:
     dependency: transitive
     description:
@@ -619,26 +627,26 @@ packages:
     dependency: "direct main"
     description:
       name: test
-      sha256: "7ee44229615f8f642b68120165ae4c2a75fe77ae2065b1e55ae4711f6cf0899e"
+      sha256: "713a8789d62f3233c46b4a90b174737b2c04cb6ae4500f2aa8b1be8f03f5e67f"
       url: "https://pub.dev"
     source: hosted
-    version: "1.25.7"
+    version: "1.25.8"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: "5b8a98dafc4d5c4c9c72d8b31ab2b23fc13422348d2997120294d3bac86b4ddb"
+      sha256: "664d3a9a64782fcdeb83ce9c6b39e78fd2971d4e37827b9b06c3aa1edc5e760c"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.2"
+    version: "0.7.3"
   test_core:
     dependency: transitive
     description:
       name: test_core
-      sha256: "55ea5a652e38a1dfb32943a7973f3681a60f872f8c3a05a14664ad54ef9c6696"
+      sha256: "12391302411737c176b0b5d6491f466b0dd56d4763e347b6714efbaa74d7953d"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.4"
+    version: "0.6.5"
   typed_data:
     dependency: transitive
     description:
@@ -675,18 +683,18 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d"
+      sha256: f6be3ed8bd01289b34d679c2b62226f63c0e69f9fd2e50a6b3c1c729a961041b
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.5"
+    version: "14.3.0"
   watcher:
     dependency: transitive
     description:
       name: watcher
-      sha256: "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8"
+      sha256: "69da27e49efa56a15f8afe8f4438c4ec02eff0a117df1b22ea4aad194fe1c104"
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   web:
     dependency: transitive
     description:
@@ -739,10 +747,10 @@ packages:
     dependency: transitive
     description:
       name: yaml
-      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.2"
+    version: "3.1.3"
 sdks:
-  dart: ">=3.5.3 <4.0.0"
+  dart: ">=3.6.0 <4.0.0"
   flutter: ">=3.24.0"