feat: #2169 - new simple input page for "Stores" (#2195)

New files:
* `simple_input_page.dart`: Simple input page: we have a list of labels, we add, we remove, we save.
* `simple_input_page_helpers.dart`: Helpers for Simple Input Page.

Impacted files:
* `category_picker_page.dart`: refactored
* `edit_ingredients_page.dart`: refactored
* `edit_product_page.dart`: added an "edit store" button; refactored
* `nutrition_page_loaded.dart`: refactored
* `product_query.dart`: added fields for stores
* `product_refresher.dart`: now we return the saved and refreshed product instead of a mere bool

packages/smooth_app/lib/database/product_query.dart

@@ -95,6 +95,7 @@ abstract class ProductQuery {
         ProductField.SELECTED_IMAGE,
         ProductField.QUANTITY,
         ProductField.SERVING_SIZE,
+        ProductField.STORES,
         ProductField.PACKAGING_QUANTITY,
         ProductField.NUTRIMENTS,
         ProductField.NUTRIENT_LEVELS,

packages/smooth_app/lib/pages/product/category_picker_page.dart

@@ -161,12 +161,12 @@ class _CategoryPickerPageState extends State<CategoryPickerPage> {
       tag
     ]; // TODO(monsieurtanuki): is the last leaf good enough or should we go down to the roots?
 
-    final bool savedAndRefreshed = await ProductRefresher().saveAndRefresh(
+    final Product? savedAndRefreshed = await ProductRefresher().saveAndRefresh(
       context: context,
       localDatabase: localDatabase,
       product: product,
     );
-    if (savedAndRefreshed) {
+    if (savedAndRefreshed != null) {
       if (!mounted) {
         return;
       }

packages/smooth_app/lib/pages/product/common/product_refresher.dart

@@ -9,24 +9,26 @@ import 'package:smooth_app/generic_lib/loading_dialog.dart';
 
 /// Refreshes a product on the BE then on the local database.
 class ProductRefresher {
-  Future<bool> saveAndRefresh({
+  /// Returns a saved and refreshed [Product] if successful, or null.
+  Future<Product?> saveAndRefresh({
     required final BuildContext context,
     required final LocalDatabase localDatabase,
     required final Product product,
   }) async {
     final AppLocalizations appLocalizations = AppLocalizations.of(context);
-    final bool? savedAndRefreshed = await LoadingDialog.run<bool>(
+    final _MetaProductRefresher? savedAndRefreshed =
+        await LoadingDialog.run<_MetaProductRefresher>(
       future: _saveAndRefresh(product, localDatabase),
       context: context,
       title: appLocalizations.nutrition_page_update_running,
     );
     if (savedAndRefreshed == null) {
       // probably the end user stopped the dialog
-      return false;
+      return null;
     }
-    if (!savedAndRefreshed) {
+    if (savedAndRefreshed.product == null) {
       await LoadingDialog.error(context: context);
-      return false;
+      return null;
     }
     await showDialog<void>(
       context: context,
@@ -38,11 +40,11 @@ class ProductRefresher {
         ),
       ),
     );
-    return true;
+    return savedAndRefreshed.product;
   }
 
   /// Saves a product on the BE and refreshes the local database
-  Future<bool> _saveAndRefresh(
+  Future<_MetaProductRefresher> _saveAndRefresh(
     final Product inputProduct,
     final LocalDatabase localDatabase,
   ) async {
@@ -52,7 +54,7 @@ class ProductRefresher {
         inputProduct,
       );
       if (status.error != null) {
-        return false;
+        return _MetaProductRefresher.error(status.error);
       }
       final ProductQueryConfiguration configuration = ProductQueryConfiguration(
         inputProduct.barcode!,
@@ -65,11 +67,20 @@ class ProductRefresher {
       );
       if (result.product != null) {
         await DaoProduct(localDatabase).put(result.product!);
-        return true;
+        localDatabase.notifyListeners();
+        return _MetaProductRefresher.product(result.product);
       }
     } catch (e) {
       //
     }
-    return false;
+    return const _MetaProductRefresher.error(null);
   }
 }
+
+class _MetaProductRefresher {
+  const _MetaProductRefresher.error(this.error) : product = null;
+  const _MetaProductRefresher.product(this.product) : error = null;
+
+  final String? error;
+  final Product? product;
+}

packages/smooth_app/lib/pages/product/edit_ingredients_page.dart

@@ -148,12 +148,12 @@ class _EditIngredientsPageState extends State<EditIngredientsPage> {
   Future<void> _updateIngredientsText(String ingredientsText) async {
     widget.product.ingredientsText = ingredientsText;
     final LocalDatabase localDatabase = context.read<LocalDatabase>();
-    final bool savedAndRefreshed = await ProductRefresher().saveAndRefresh(
+    final Product? savedAndRefreshed = await ProductRefresher().saveAndRefresh(
       context: context,
       localDatabase: localDatabase,
       product: widget.product,
     );
-    if (savedAndRefreshed) {
+    if (savedAndRefreshed != null) {
       if (!mounted) {
         return;
       }

packages/smooth_app/lib/pages/product/edit_product_page.dart

@@ -10,6 +10,8 @@ import 'package:smooth_app/pages/product/edit_ingredients_page.dart';
 import 'package:smooth_app/pages/product/nutrition_page_loaded.dart';
 import 'package:smooth_app/pages/product/ordered_nutrients_cache.dart';
 import 'package:smooth_app/pages/product/product_image_gallery_view.dart';
+import 'package:smooth_app/pages/product/simple_input_page.dart';
+import 'package:smooth_app/pages/product/simple_input_page_helpers.dart';
 
 /// Page where we can indirectly edit all data about a product.
 class EditProductPage extends StatefulWidget {
@@ -23,14 +25,21 @@ class EditProductPage extends StatefulWidget {
 
 class _EditProductPageState extends State<EditProductPage> {
   int _changes = 0;
+  late Product _product;
+
+  @override
+  void initState() {
+    super.initState();
+    _product = widget.product;
+  }
 
   @override
   Widget build(BuildContext context) {
     final AppLocalizations appLocalizations = AppLocalizations.of(context);
     return Scaffold(
       appBar: AppBar(
         title: AutoSizeText(
-          getProductName(widget.product, appLocalizations),
+          getProductName(_product, appLocalizations),
           maxLines: 2,
         ),
         systemOverlayStyle: const SystemUiOverlayStyle(
@@ -52,9 +61,8 @@ class _EditProductPageState extends State<EditProductPage> {
               title: Text(
                 appLocalizations.edit_product_form_item_barcode,
               ),
-              subtitle: widget.product.barcode == null
-                  ? null
-                  : Text(widget.product.barcode!),
+              subtitle:
+                  _product.barcode == null ? null : Text(_product.barcode!),
             ),
             _ListTitleItem(
               title: appLocalizations.edit_product_form_item_details_title,
@@ -65,7 +73,7 @@ class _EditProductPageState extends State<EditProductPage> {
                   context,
                   MaterialPageRoute<bool>(
                     builder: (BuildContext context) =>
-                        AddBasicDetailsPage(widget.product),
+                        AddBasicDetailsPage(_product),
                   ),
                 );
                 if (refreshed ?? false) {
@@ -78,15 +86,15 @@ class _EditProductPageState extends State<EditProductPage> {
               subtitle: appLocalizations.edit_product_form_item_photos_subtitle,
               onTap: () async {
                 final List<ProductImageData> allProductImagesData =
-                    getAllProductImagesData(widget.product, appLocalizations);
+                    getAllProductImagesData(_product, appLocalizations);
                 final bool? refreshed = await Navigator.push<bool>(
                   context,
                   MaterialPageRoute<bool>(
                     builder: (BuildContext context) => ProductImageGalleryView(
                       productImageData: allProductImagesData.first,
                       allProductImagesData: allProductImagesData,
                       title: allProductImagesData.first.title,
-                      barcode: widget.product.barcode,
+                      barcode: _product.barcode,
                     ),
                   ),
                 );
@@ -106,7 +114,7 @@ class _EditProductPageState extends State<EditProductPage> {
                   context,
                   MaterialPageRoute<bool>(
                     builder: (BuildContext context) => EditIngredientsPage(
-                      product: widget.product,
+                      product: _product,
                     ),
                   ),
                 );
@@ -118,6 +126,26 @@ class _EditProductPageState extends State<EditProductPage> {
             _ListTitleItem(
               title: appLocalizations.edit_product_form_item_packaging_title,
             ),
+            _ListTitleItem(
+              title: 'Stores', // TODO(monsieurtanuki): translate
+              onTap: () async {
+                final Product? refreshed = await Navigator.push<Product>(
+                  context,
+                  MaterialPageRoute<Product>(
+                    builder: (BuildContext context) => SimpleInputPage(
+                      SimpleInputPageStoreHelper(
+                        _product,
+                        appLocalizations,
+                      ),
+                    ),
+                  ),
+                );
+                if (refreshed != null) {
+                  _product = refreshed;
+                }
+                return;
+              },
+            ),
             _ListTitleItem(
               title:
                   appLocalizations.edit_product_form_item_nutrition_facts_title,
@@ -136,7 +164,7 @@ class _EditProductPageState extends State<EditProductPage> {
                   context,
                   MaterialPageRoute<bool>(
                     builder: (BuildContext context) => NutritionPageLoaded(
-                      widget.product,
+                      _product,
                       cache.orderedNutrients,
                     ),
                   ),
@@ -145,7 +173,7 @@ class _EditProductPageState extends State<EditProductPage> {
                   _changes++;
                 }
               },
-            )
+            ),
           ],
         ),
       ),

packages/smooth_app/lib/pages/product/nutrition_page_loaded.dart

@@ -455,12 +455,12 @@ class _NutritionPageLoadedState extends State<NutritionPageLoaded> {
     // minimal product: we only want to save the nutrients
     final Product inputProduct = _nutritionContainer.getProduct();
 
-    final bool savedAndRefreshed = await ProductRefresher().saveAndRefresh(
+    final Product? savedAndRefreshed = await ProductRefresher().saveAndRefresh(
       context: context,
       localDatabase: localDatabase,
       product: inputProduct,
     );
-    if (savedAndRefreshed) {
+    if (savedAndRefreshed != null) {
       if (!mounted) {
         return;
       }