feat: 1055 - new experimental class "FlexibleProduct"

lib/openfoodfacts.dart

@@ -36,6 +36,10 @@ export 'src/model/ordered_nutrients.dart';
 export 'src/model/origins_of_ingredients.dart';
 export 'src/model/owner_field.dart';
 export 'src/model/packaging.dart';
+export 'src/model/flexible/flexible_map.dart';
+export 'src/model/flexible/flexible_product.dart';
+export 'src/model/flexible/flexible_product_result.dart';
+export 'src/model/flexible/flexible_search_result.dart';
 export 'src/model/parameter/allergens_parameter.dart';
 export 'src/model/parameter/barcode_parameter.dart';
 export 'src/model/parameter/ingredients_analysis_parameter.dart';

lib/src/model/flexible/flexible_map.dart

@@ -0,0 +1,11 @@
+import 'package:meta/meta.dart';
+
+@experimental
+typedef JsonMap = Map<String, dynamic>;
+
+@experimental
+abstract class FlexibleMap {
+  const FlexibleMap(this.json);
+
+  final JsonMap json;
+}

lib/src/model/flexible/flexible_product.dart

@@ -0,0 +1,190 @@
+import 'package:meta/meta.dart';
+
+import 'flexible_map.dart';
+import '../additives.dart';
+import '../attribute_group.dart';
+import '../ingredient.dart';
+import '../knowledge_panels.dart';
+import '../nutriments.dart';
+import '../product_image.dart';
+import '../product_packaging.dart';
+import '../product_type.dart';
+import '../../utils/json_helper.dart';
+import '../../utils/language_helper.dart';
+import '../../utils/product_fields.dart';
+import '../../utils/uri_helper.dart';
+
+/// Product without predefined structure, relying mainly on the json.
+///
+/// The typical use case would be "extending" this class in order to control
+/// brand new field values.
+/// The current field list matches what is used in Smoothie.
+@experimental
+class FlexibleProduct extends FlexibleMap {
+  FlexibleProduct(super.json);
+
+  FlexibleProduct.fromServer(
+    super.json, {
+    required final UriProductHelper uriHelper,
+  }) {
+    json['image_url_base'] = uriHelper.getImageUrlBase();
+  }
+
+  // mandatory for images
+  String get imageUrlBase => json['image_url_base'];
+
+  String? get barcode => json['code'];
+
+  ProductType? get productType => ProductType.fromOffTag(json['product_type']);
+
+  int? get schemaVersion => json['schema_version'];
+
+  String? get abbreviatedName => json['abbreviated_product_name'];
+
+  Additives? get additives =>
+      Additives.additivesFromJson(json['additives_tags'] as List?);
+
+  Iterable<AttributeGroup>? get attributeGroups =>
+      (json['attribute_groups'] as List<dynamic>?)
+          ?.map(AttributeGroup.fromJson);
+
+  String? get brands => json['brands'] as String?;
+
+  String? get categories => json['categories'] as String?;
+
+  Iterable<String>? get categoriesTags =>
+      (json['categories_tags'] as List<dynamic>?)?.map(
+        (e) => e as String,
+      );
+
+  Map<OpenFoodFactsLanguage, List<String>>? get categoriesTagsInLanguages =>
+      LanguageHelper.fromJsonStringsListMapWithPrefix(
+        json,
+        inProductField: ProductField.CATEGORIES_TAGS_IN_LANGUAGES,
+      );
+
+  String? get comparedToCategory => json['compared_to_category'] as String?;
+
+  String? get countries => json['countries'] as String?;
+
+  Map<OpenFoodFactsLanguage, List<String>>? get countriesTagsInLanguages =>
+      LanguageHelper.fromJsonStringsListMapWithPrefix(
+        json,
+        inProductField: ProductField.COUNTRIES_TAGS_IN_LANGUAGES,
+      );
+
+  String? get embCodes => json['emb_codes'] as String?;
+
+  String? get genericName => json['generic_name'] as String?;
+
+  String? get imageFrontUrl => json['image_front_url'] as String?;
+
+  String? get imageFrontSmallUrl => json['image_front_small_url'] as String?;
+
+  String? get imageIngredientsUrl => json['image_ingredients_url'] as String?;
+
+  String? get imageIngredientsSmallUrl =>
+      json['image_ingredients_small_url'] as String?;
+
+  String? get imageNutritionUrl => json['image_nutrition_url'] as String?;
+
+  String? get imageNutritionSmallUrl =>
+      json['image_nutrition_small_url'] as String?;
+
+  String? get imagePackagingUrl => json['image_packaging_url'] as String?;
+
+  String? get imagePackagingSmallUrl =>
+      json['image_packaging_small_url'] as String?;
+
+  List<ProductImage>? get images =>
+      JsonHelper.allImagesFromJson(json['images'] as Map?);
+
+  Iterable<Ingredient>? get ingredients =>
+      (json['ingredients'] as List<dynamic>?)
+          ?.map((e) => Ingredient.fromJson(e as Map<String, dynamic>));
+
+  String? get ingredientsText => json['ingredients_text'] as String?;
+
+  Map<OpenFoodFactsLanguage, String>? get ingredientsTextInLanguages =>
+      LanguageHelper.fromJsonStringMapWithPrefix(
+        json,
+        inProductField: ProductField.INGREDIENTS_TEXT_IN_LANGUAGES,
+        allProductField: ProductField.INGREDIENTS_TEXT_ALL_LANGUAGES,
+      );
+
+  KnowledgePanels? get knowledgePanels =>
+      KnowledgePanels.fromJsonHelper(json['knowledge_panels'] as Map?);
+
+  String? get labels => json['labels'] as String?;
+
+  Map<OpenFoodFactsLanguage, List<String>>? get labelsTagsInLanguages =>
+      LanguageHelper.fromJsonStringsListMapWithPrefix(
+        json,
+        inProductField: ProductField.LABELS_TAGS_IN_LANGUAGES,
+      );
+
+  OpenFoodFactsLanguage? get lang =>
+      LanguageHelper.fromJson(json['lang'] as String?);
+
+  DateTime? get lastImage => JsonHelper.timestampToDate(json['last_image_t']);
+
+  Iterable<String>? get lastImageDates =>
+      (json['last_image_dates_tags'] as List<dynamic>?)
+          ?.map((e) => e as String);
+
+  bool? get noNutritionData =>
+      JsonHelper.checkboxFromJSON(json['no_nutrition_data']);
+
+  String? get nutrimentDataPer => json['nutrition_data_per'] as String?;
+
+  Nutriments? get nutriments => noNutritionData == true
+      ? null
+      : json['nutriments'] == null
+          ? null
+          : Nutriments.fromJson(json['nutriments'] as Map<String, dynamic>);
+
+  bool? get obsolete => JsonHelper.checkboxFromJSON(json['obsolete']);
+
+  String? get origins => json['origins'] as String?;
+
+  Map<String, int>? get ownerFields =>
+      (json['owner_fields'] as Map<String, dynamic>?)?.map(
+        (k, e) => MapEntry(k, (e as num).toInt()),
+      );
+
+  Iterable<ProductPackaging>? get packagings =>
+      (json['packagings'] as List<dynamic>?)?.map(ProductPackaging.fromJson);
+
+  bool? get packagingsComplete =>
+      JsonHelper.boolFromJSON(json['packagings_complete']);
+
+  Map<OpenFoodFactsLanguage, String>? get packagingTextInLanguages =>
+      LanguageHelper.fromJsonStringMapWithPrefix(
+        json,
+        inProductField: ProductField.PACKAGING_TEXT_IN_LANGUAGES,
+        allProductField: ProductField.PACKAGING_TEXT_ALL_LANGUAGES,
+      );
+
+  String? get productName => json['product_name'] as String?;
+
+  Map<OpenFoodFactsLanguage, String>? get productNameInLanguages =>
+      LanguageHelper.fromJsonStringMapWithPrefix(
+        json,
+        inProductField: ProductField.NAME_IN_LANGUAGES,
+        allProductField: ProductField.NAME_ALL_LANGUAGES,
+      );
+
+  String? get quantity => json['quantity'] as String?;
+
+  List<ProductImage>? get selectedImages =>
+      JsonHelper.selectedImagesFromJson(json['selected_images'] as Map?);
+
+  String? get servingSize => json['serving_size'] as String?;
+
+  Iterable<String>? get statesTags =>
+      (json['states_tags'] as List<dynamic>?)?.map((e) => e as String);
+
+  String? get stores => json['stores'] as String?;
+
+  String? get website => json['link'] as String?;
+}

lib/src/model/flexible/flexible_product_result.dart

@@ -0,0 +1,40 @@
+import 'package:meta/meta.dart';
+
+import 'flexible_map.dart';
+import 'flexible_product.dart';
+import '../localized_tag.dart';
+import '../product_result_field_answer.dart';
+import '../product_result_v3.dart';
+import '../../utils/uri_helper.dart';
+
+/// API answer from a call to /api/v???/product/$barcode, in a flexible manner.
+@experimental
+class FlexibleProductResult extends FlexibleMap {
+  FlexibleProductResult(
+    super.json, {
+    required this.uriHelper,
+  });
+
+  final UriProductHelper uriHelper;
+
+  String? get barcode => json['code'] as String?;
+
+  LocalizedTag? get result => json['result'] == null
+      ? null
+      : LocalizedTag.fromJson(json['result'] as Map<String, dynamic>);
+
+  String? get status => json['status'] as String?;
+
+  List<ProductResultFieldAnswer>? get errors =>
+      ProductResultV3.fromJsonListAnswerForField(json['errors']);
+
+  List<ProductResultFieldAnswer>? get warnings =>
+      ProductResultV3.fromJsonListAnswerForField(json['warnings']);
+
+  FlexibleProduct? get product => json['product'] == null
+      ? null
+      : FlexibleProduct.fromServer(
+          json['product'] as JsonMap,
+          uriHelper: uriHelper,
+        );
+}

lib/src/model/flexible/flexible_search_result.dart

@@ -0,0 +1,35 @@
+import 'package:meta/meta.dart';
+
+import 'flexible_map.dart';
+import 'flexible_product.dart';
+import '../../interface/json_object.dart';
+import '../../utils/uri_helper.dart';
+
+/// API answer from a call product search, in a flexible manner.
+@experimental
+class FlexibleSearchResult extends FlexibleMap {
+  FlexibleSearchResult(
+    super.json, {
+    required this.uriHelper,
+  });
+
+  final UriProductHelper uriHelper;
+
+  int? get page => JsonObject.parseInt(json['page']);
+
+  int? get pageSize => JsonObject.parseInt(json['page_size']);
+
+  int? get count => JsonObject.parseInt(json['count']);
+
+  int? get pageCount => JsonObject.parseInt(json['page_count']);
+
+  int? get skip => JsonObject.parseInt(json['skip']);
+
+  Iterable<FlexibleProduct>? get products =>
+      (json['products'] as List<dynamic>?)?.map(
+        (toElement) => FlexibleProduct.fromServer(
+          toElement,
+          uriHelper: uriHelper,
+        ),
+      );
+}

lib/src/model/product_image.dart

@@ -1,3 +1,5 @@
+import 'package:meta/meta.dart';
+
 import '../utils/language_helper.dart';
 import '../utils/open_food_api_configuration.dart';
 import '../utils/uri_helper.dart';
@@ -191,6 +193,17 @@ class ProductImage {
       '/'
       '${getUrlFilename(imageSize: imageSize)}';
 
+  /// Returns the url to display this image, for [FlexibleProduct].
+  @experimental
+  String getFlexibleUrl(
+    final String barcode, {
+    final ImageSize? imageSize,
+    required final String imageUrlBase,
+  }) =>
+      '$imageUrlBase'
+      '/${UriProductHelper.getBarcodeSubPath(barcode)}'
+      '/${getUrlFilename(imageSize: imageSize)}';
+
   /// Returns just the filename of the url to display this image.
   ///
   /// See also [getUrl].

lib/src/model/product_result_v3.dart

@@ -33,13 +33,13 @@ class ProductResultV3 extends JsonObject {
   /// Errors.
   ///
   /// Typically populated if [status] is [statusFailure].
-  @JsonKey(includeIfNull: false, fromJson: _fromJsonListAnswerForField)
+  @JsonKey(includeIfNull: false, fromJson: fromJsonListAnswerForField)
   List<ProductResultFieldAnswer>? errors;
 
   /// Warnings.
   ///
   /// Typically populated if [status] is [statusWarning].
-  @JsonKey(includeIfNull: false, fromJson: _fromJsonListAnswerForField)
+  @JsonKey(includeIfNull: false, fromJson: fromJsonListAnswerForField)
   List<ProductResultFieldAnswer>? warnings;
 
   @JsonKey(includeIfNull: false)
@@ -70,7 +70,7 @@ class ProductResultV3 extends JsonObject {
   String toString() => toJson().toString();
 
   /// From a `List<AnswerForField>` in `dynamic`'s clothing (JsonKey)
-  static List<ProductResultFieldAnswer>? _fromJsonListAnswerForField(
+  static List<ProductResultFieldAnswer>? fromJsonListAnswerForField(
       dynamic list) {
     if (list == null) {
       return null;