consistent, improved deduplication behavior across mealitems and logs

deduplicate by ingredient AND amount: so if you use the same
ingredient, but in a different amount, the different amount
will show up
this increases the list of suggestions for editing meals,
and decreases the list logging an ingredient (significantly,
if you often log the same ingredient in the same amount)

lib/models/nutrition/nutritional_plan.dart

@@ -16,6 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+import 'package:collection/collection.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:json_annotation/json_annotation.dart';
@@ -191,16 +192,16 @@ class NutritionalPlan {
     return out;
   }
 
-  /// Helper that returns all meal items for the current plan
-  ///
-  /// Duplicated ingredients are removed
-  List<MealItem> get allMealItems {
+  /// returns meal items across all meals
+  /// deduped by the combination of amount and ingredient ID
+  List<MealItem> get dedupMealItems {
     final List<MealItem> out = [];
     for (final meal in meals) {
       for (final mealItem in meal.mealItems) {
-        final ingredientInList = out.where((e) => e.ingredientId == mealItem.ingredientId);
+        final found = out.firstWhereOrNull(
+            (e) => e.amount == mealItem.amount && e.ingredientId == mealItem.ingredientId);
 
-        if (ingredientInList.isEmpty) {
+        if (found == null) {
           out.add(mealItem);
         }
       }
@@ -208,6 +209,20 @@ class NutritionalPlan {
     return out;
   }
 
+  /// returns diary entries
+  /// deduped by the combination of amount and ingredient ID
+  List<Log> get dedupDiaryEntries {
+    final out = <Log>[];
+    for (final log in diaryEntries) {
+      final found =
+          out.firstWhereOrNull((e) => e.amount == log.amount && e.ingredientId == log.ingredientId);
+      if (found == null) {
+        out.add(log);
+      }
+    }
+    return out;
+  }
+
   Meal pseudoMealOthers(String name) {
     return Meal(
       id: PSEUDO_MEAL_ID,

lib/widgets/nutrition/forms.dart

@@ -131,7 +131,7 @@ Widget MealItemForm(Meal meal, List<MealItem> recent, [String? barcode, bool? te
 
 Widget IngredientLogForm(NutritionalPlan plan) {
   return IngredientForm(
-      recent: plan.diaryEntries,
+      recent: plan.dedupDiaryEntries,
       onSave: (BuildContext context, MealItem mealItem, DateTime? dt) {
         Provider.of<NutritionPlansProvider>(context, listen: false)
             .logIngredientToDiary(mealItem, plan.id!, dt);

lib/widgets/nutrition/meal.dart

@@ -39,11 +39,11 @@ enum viewMode {
 
 class MealWidget extends StatefulWidget {
   final Meal _meal;
-  final List<MealItem> _listMealItems;
+  final List<MealItem> _recentMealItems;
 
   const MealWidget(
     this._meal,
-    this._listMealItems,
+    this._recentMealItems,
   );
 
   @override
@@ -108,7 +108,7 @@ class _MealWidgetState extends State<MealWidget> {
                             FormScreen.routeName,
                             arguments: FormScreenArguments(
                               AppLocalizations.of(context).addIngredient,
-                              MealItemForm(widget._meal, widget._listMealItems),
+                              MealItemForm(widget._meal, widget._recentMealItems),
                               hasListView: true,
                             ),
                           );

lib/widgets/nutrition/nutritional_plan_detail.dart

@@ -56,11 +56,11 @@ class NutritionalPlanDetailWidget extends StatelessWidget {
         const SizedBox(height: 10),
         ..._nutritionalPlan.meals.map((meal) => MealWidget(
               meal,
-              _nutritionalPlan.allMealItems,
+              _nutritionalPlan.dedupMealItems,
             )),
         MealWidget(
           _nutritionalPlan.pseudoMealOthers('Other logs'),
-          _nutritionalPlan.allMealItems,
+          _nutritionalPlan.dedupMealItems,
         ),
         if (!_nutritionalPlan.onlyLogging)
           Padding(

test/nutrition/nutritional_plan_model_test.dart

@@ -101,7 +101,7 @@ void main() {
     });
 
     test('Test that the getter returns all meal items for a plan', () {
-      expect(plan.allMealItems, plan.meals[0].mealItems + plan.meals[1].mealItems);
+      expect(plan.dedupMealItems, plan.meals[0].mealItems + plan.meals[1].mealItems);
     });
   });
 }