feat: added feat in dev mode to preload 1k products (openfoodfacts#2661)

* added feat in dev mode to preload 1k products

* explixitly mention to do a sort by popularity

* moved helper into query dir

packages/smooth_app/lib/pages/preferences/user_preferences_dev_mode.dart

@@ -9,6 +9,7 @@ import 'package:smooth_app/data_models/user_preferences.dart';
 import 'package:smooth_app/database/dao_product_list.dart';
 import 'package:smooth_app/database/local_database.dart';
 import 'package:smooth_app/generic_lib/dialogs/smooth_alert_dialog.dart';
+import 'package:smooth_app/generic_lib/loading_dialog.dart';
 import 'package:smooth_app/helpers/data_importer/product_list_import_export.dart';
 import 'package:smooth_app/helpers/data_importer/smooth_app_data_importer.dart';
 import 'package:smooth_app/pages/onboarding/onboarding_flow_navigator.dart';
@@ -17,6 +18,7 @@ import 'package:smooth_app/pages/preferences/user_preferences_dialog_editor.dart
 import 'package:smooth_app/pages/preferences/user_preferences_page.dart';
 import 'package:smooth_app/pages/scan/ml_kit_scan_page.dart';
 import 'package:smooth_app/query/product_query.dart';
+import 'package:smooth_app/query/products_preload_helper.dart';
 
 /// Collapsed/expanded display of "dev mode" for the preferences page.
 ///
@@ -97,6 +99,28 @@ class UserPreferencesDevMode extends AbstractUserPreferences {
             setState(() {});
           },
         ),
+        ListTile(
+          title: const Text(
+            'Preload Data',
+          ),
+          subtitle: const Text(
+              'Download the top 1000 products in your country for instant scanning'),
+          onTap: () async {
+            final LocalDatabase localDatabase = context.read<LocalDatabase>();
+            final String status = await LoadingDialog.run<String>(
+                  title: 'Downloading data\nThis may take a while',
+                  context: context,
+                  future: PreloadDataHelper(localDatabase).preloadData(),
+                ) ??
+                'Cancelled';
+            // ignore: use_build_context_synchronously
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                content: Text(status),
+              ),
+            );
+          },
+        ),
         ListTile(
           title: Text(
             appLocalizations.dev_preferences_reset_onboarding_title,
@@ -425,7 +449,6 @@ class UserPreferencesDevMode extends AbstractUserPreferences {
         userPreferencesCameraPostFrameDuration,
         result,
       );
-
       setState(() {});
     }
   }

packages/smooth_app/lib/query/products_preload_helper.dart

@@ -0,0 +1,43 @@
+import 'dart:io';
+import 'package:openfoodfacts/openfoodfacts.dart';
+import 'package:smooth_app/database/dao_product.dart';
+import 'package:smooth_app/database/local_database.dart';
+import 'package:smooth_app/query/product_query.dart';
+
+class PreloadDataHelper {
+  PreloadDataHelper(this.localDatabase);
+  LocalDatabase localDatabase;
+
+  Future<String> preloadData() async {
+    final DaoProduct daoProduct = DaoProduct(localDatabase);
+    final List<ProductField> fields = ProductQuery.fields;
+    fields.remove(ProductField.KNOWLEDGE_PANELS);
+    try {
+      final ProductSearchQueryConfiguration queryConfig =
+          ProductSearchQueryConfiguration(
+        fields: fields,
+        parametersList: <Parameter>[
+          const PageSize(size: 1000),
+          const PageNumber(page: 1),
+          const SortBy(option: SortOption.POPULARITY),
+        ],
+        language: ProductQuery.getLanguage(),
+        country: ProductQuery.getCountry(),
+      );
+      final SearchResult searchResult = await OpenFoodAPIClient.searchProducts(
+        ProductQuery.getUser(),
+        queryConfig,
+      );
+      if (searchResult.products!.isEmpty) {
+        return 'No products found';
+      } else {
+        await daoProduct.putAll(searchResult.products!);
+        return '${searchResult.products!.length} products added to the database for instant scan';
+      }
+    } on SocketException {
+      return 'No internet connection';
+    } catch (e) {
+      return 'Error: $e';
+    }
+  }
+}