Initial and done prolly

lib/db/crud/storage_locations_crud.dart

@@ -0,0 +1,88 @@
+part of '../database.dart';
+
+extension StorageLocationsCrud on AppDatabase {
+  Stream<List<StorageLocationData>> get storageLocationsSubscription =>
+      managers.storageLocation.watch();
+
+  Future<int> addStorageLocation({
+    required String name,
+    required String description,
+    required TemperatureMode temperatureMode,
+    required String icon,
+  }) async {
+    return await managers.storageLocation.create((c) => c(
+          name: name,
+          description: description,
+          temperatureMode: temperatureMode.name,
+          icon: icon,
+        ));
+  }
+
+  Future<int> updateStorageLocation({
+    required int id,
+    String? name,
+    String? description,
+    TemperatureMode? temperatureMode,
+    double? capacity,
+    String? icon,
+  }) async {
+    return await managers.storageLocation
+        .filter((f) => f.id(id))
+        .update((u) => u(
+              name: Value.absentIfNull(name),
+              description: Value.absentIfNull(description),
+              temperatureMode: Value.absentIfNull(temperatureMode?.name),
+              icon: Value.absentIfNull(icon),
+            ));
+  }
+
+  Future<void> deleteStorageLocation(StorageLocationData item) async {
+    await managers.storageLocation.filter((f) => f.id(item.id)).delete();
+  }
+
+  Future<List<(StorageLocationData, List<(ProductData, ProductCategoryData)>)>>
+      getStorageLocations() async {
+    final storageLocations = await managers.storageLocation
+        .withReferences((prefetch) => prefetch(productRefs: true))
+        .get();
+
+    final result =
+        <(StorageLocationData, List<(ProductData, ProductCategoryData)>)>[];
+
+    for (final (storage, refs) in storageLocations) {
+      final products = await refs.productRefs
+          .withReferences((prefetch) => prefetch(category: true))
+          .get();
+      final productsWithCategories = <(ProductData, ProductCategoryData)>[];
+      for (final (product, refs) in products) {
+        productsWithCategories.add((
+          product,
+          await refs.category.getSingle(),
+        ));
+      }
+      result.add((
+        storage,
+        productsWithCategories,
+      ));
+    }
+
+    return result;
+  }
+
+  Future<bool> defaultExists() async {
+    final exists = await managers.storageLocation
+        .filter((f) => f.isDefault(true))
+        .exists();
+
+    return exists;
+  }
+
+  Future<void> switchDefault(int newDefaultId) async {
+    await managers.storageLocation
+        .filter((f) => f.isDefault(true))
+        .update((u) => u(isDefault: const Value(false)));
+    await managers.storageLocation
+        .filter((f) => f.id(newDefaultId))
+        .update((u) => u(isDefault: const Value(true)));
+  }
+}