Barcode scanner

lib/l10n/app_en.arb

@@ -507,5 +507,43 @@
     "description": "Snackbar message to show on copying data to a new log entry"
   },
   "appUpdateTitle" : "Update needed",
-  "appUpdateContent" : "This version of the app is not compatible with the server, please update your application."
+  "appUpdateContent" : "This version of the app is not compatible with the server, please update your application.",
+
+  "productFound": "Product found",
+  "@productFound": {
+    "description": "Header label for dialog when product is found with barcode"
+  },
+
+  "productFoundDescription": "The barcode corresponds to this product: \n {productName} \nDo you want to continue ?",
+  "@productFoundDescription": {
+    "description": "Dialog info when product is found with barcode",
+    "type": "text",
+    "placeholders": {
+      "productName": {}
+    }
+  },
+
+  "productNotFound": "Product not found",
+  "@productNotFound": {
+    "description": "Header label for dialog when product is not found with barcode"
+  },
+
+  "productNotFoundDescription": "Product with scanned barcode ({barcode}) was not found.",
+  "@productNotFoundDescription": {
+    "description": "Dialog info when product is not found with barcode",
+    "type": "text",
+    "placeholders": {
+      "barcode": {}
+    }
+  },
+
+  "scanBarcode": "Scan barcode",
+  "@scanBarcode": {
+    "description": "Label for scan barcode button"
+  },
+
+  "close": "Close",
+  "@close": {
+    "description": "Translation for close"
+  }
 }

lib/models/nutrition/ingredient.dart

@@ -25,6 +25,10 @@ class Ingredient {
   @JsonKey(required: true)
   final int id;
 
+  /// Barcode of the product
+  @JsonKey(required: true)
+  final String code;
+
   /// Name of the product
   @JsonKey(required: true)
   final String name;
@@ -66,6 +70,7 @@ class Ingredient {
 
   const Ingredient({
     required this.id,
+    required this.code,
     required this.name,
     required this.creationDate,
     required this.energy,

lib/providers/nutrition.dart

@@ -326,6 +326,28 @@ class NutritionPlansProvider extends WgerBaseProvider with ChangeNotifier {
     return json.decode(utf8.decode(response.bodyBytes))['suggestions'] as List<dynamic>;
   }
 
+  /// Searches for an ingredient with code
+  Future<Ingredient?> searchIngredientWithCode(String code) async {
+
+    if (code.isEmpty ) {
+      return null;
+    }
+
+    // Send the request
+    final data = await fetch(
+      makeUrl(
+        _ingredientPath,
+        query: {'code': code},
+      ),
+    );
+
+    if(data["count"]==0){
+      return null;
+    }else{
+      return Ingredient.fromJson(data['results'][0]);
+    }
+  }
+
   /// Log meal to nutrition diary
   Future<void> logMealToDiary(Meal meal) async {
     for (final item in meal.mealItems) {

lib/widgets/nutrition/forms.dart

@@ -17,6 +17,7 @@
  */
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:provider/provider.dart';
 import 'package:wger/exceptions/http_exception.dart';
@@ -116,17 +117,25 @@ class MealItemForm extends StatelessWidget {
   final Meal _meal;
   late final MealItem _mealItem;
   final List<MealItem> _listMealItems;
+  late String _barcode;
+  late bool _test;
 
   final _form = GlobalKey<FormState>();
   final _ingredientIdController = TextEditingController();
   final _ingredientController = TextEditingController();
   final _amountController = TextEditingController();
 
-  MealItemForm(this._meal, this._listMealItems, [mealItem]) {
+  MealItemForm(this._meal, this._listMealItems, [mealItem, code, test]) {
     _mealItem = mealItem ?? MealItem.empty();
+    _test = test ?? false;
+    _barcode = code ?? '';
     _mealItem.mealId = _meal.id!;
   }
 
+  TextEditingController get ingredientIdController => _ingredientIdController;
+
+  MealItem get mealItem => _mealItem;
+
   @override
   Widget build(BuildContext context) {
     final String unit = AppLocalizations.of(context).g;
@@ -136,8 +145,9 @@ class MealItemForm extends StatelessWidget {
         key: _form,
         child: Column(
           children: [
-            IngredientTypeahead(_ingredientIdController, _ingredientController),
+            IngredientTypeahead(_ingredientIdController, _ingredientController, true, _barcode, _test, ),
             TextFormField(
+              key: const Key('field-weight'),
               decoration: InputDecoration(labelText: AppLocalizations.of(context).weight),
               controller: _amountController,
               keyboardType: TextInputType.number,
@@ -155,6 +165,7 @@ class MealItemForm extends StatelessWidget {
               },
             ),
             ElevatedButton(
+              key: const Key(SUBMIT_BUTTON_KEY_NAME),
               child: Text(AppLocalizations.of(context).save),
               onPressed: () async {
                 if (!_form.currentState!.validate()) {
@@ -235,7 +246,7 @@ class IngredientLogForm extends StatelessWidget {
         key: _form,
         child: Column(
           children: [
-            IngredientTypeahead(_ingredientIdController, _ingredientController),
+            IngredientTypeahead(_ingredientIdController, _ingredientController, true, '', false,),
             TextFormField(
               decoration: InputDecoration(labelText: AppLocalizations.of(context).weight),
               controller: _amountController,