feat(pricing): Replace raw double with simple type Price

lib/logic/api_maps/rest_maps/server_providers/digital_ocean/digital_ocean.dart

@@ -9,12 +9,15 @@ import 'package:selfprivacy/logic/models/hive/server_domain.dart';
 import 'package:selfprivacy/logic/models/json/hetzner_server_info.dart';
 import 'package:selfprivacy/logic/models/hive/server_details.dart';
 import 'package:selfprivacy/logic/models/hive/user.dart';
+import 'package:selfprivacy/logic/models/price.dart';
 import 'package:selfprivacy/logic/models/server_basic_info.dart';
 import 'package:selfprivacy/utils/password_generator.dart';
 
 class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
-  DigitalOceanApi(
+  DigitalOceanApi({
-      {final this.hasLogger = false, final this.isWithToken = true});
+    this.hasLogger = false,
+    this.isWithToken = true,
+  });
   @override
   bool hasLogger;
   @override
@@ -46,7 +49,7 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
     final Dio client = await getClient();
     try {
       response = await client.get(
-        '/servers',
+        '/account',
         options: Options(
           headers: {'Authorization': 'Bearer $token'},
         ),
@@ -71,30 +74,13 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
     return isValid;
   }
 
+  /// Hardcoded on their documentation and there is no pricing API at all
+  /// Probably we should scrap the doc page manually
   @override
-  RegExp getApiTokenValidation() =>
+  Future<Price?> getPricePerGb() async => Price(
-      RegExp(r'\s+|[-!$%^&*()@+|~=`{}\[\]:<>?,.\/]');
+        value: 0.10,
-
+        currency: 'USD',
-  @override
+      );
-  Future<double?> getPricePerGb() async {
-    double? price;
-
-    final Response dbGetResponse;
-    final Dio client = await getClient();
-    try {
-      dbGetResponse = await client.get('/pricing');
-
-      final volume = dbGetResponse.data['pricing']['volume'];
-      final volumePrice = volume['price_per_gb_month']['gross'];
-      price = double.parse(volumePrice);
-    } catch (e) {
-      print(e);
-    } finally {
-      client.close();
-    }
-
-    return price;
-  }
 
   @override
   Future<ServerVolume?> createVolume() async {

lib/logic/api_maps/rest_maps/server_providers/hetzner/hetzner.dart

@@ -9,6 +9,7 @@ import 'package:selfprivacy/logic/models/hive/server_domain.dart';
 import 'package:selfprivacy/logic/models/json/hetzner_server_info.dart';
 import 'package:selfprivacy/logic/models/hive/server_details.dart';
 import 'package:selfprivacy/logic/models/hive/user.dart';
+import 'package:selfprivacy/logic/models/price.dart';
 import 'package:selfprivacy/logic/models/server_basic_info.dart';
 import 'package:selfprivacy/utils/password_generator.dart';
 
@@ -75,7 +76,7 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
       RegExp(r'\s+|[-!$%^&*()@+|~=`{}\[\]:<>?,.\/]');
 
   @override
-  Future<double?> getPricePerGb() async {
+  Future<Price?> getPricePerGb() async {
     double? price;
 
     final Response dbGetResponse;
@@ -92,7 +93,12 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
       client.close();
     }
 
-    return price;
+    return price == null
+        ? null
+        : Price(
+            value: price,
+            currency: 'EUR',
+          );
   }
 
   @override

lib/logic/api_maps/rest_maps/server_providers/server_provider.dart

@@ -22,5 +22,7 @@ abstract class ServerProviderApi extends ApiMap {
   });
 
   Future<bool> isApiTokenValid(final String token);
-  RegExp getApiTokenValidation();
+  RegExp getApiTokenValidation() => RegExp(
+        r'\s+|[-!$%^&*()@+|~=`{}\[\]:<>?,.\/]',
+      );
 }

lib/logic/api_maps/rest_maps/server_providers/volume_provider.dart

@@ -1,5 +1,6 @@
 import 'package:selfprivacy/logic/api_maps/rest_maps/api_map.dart';
 import 'package:selfprivacy/logic/models/hive/server_details.dart';
+import 'package:selfprivacy/logic/models/price.dart';
 
 mixin VolumeProviderApi on ApiMap {
   Future<ServerVolume?> createVolume();
@@ -9,5 +10,5 @@ mixin VolumeProviderApi on ApiMap {
   Future<bool> detachVolume(final int volumeId);
   Future<bool> resizeVolume(final int volumeId, final int sizeGb);
   Future<void> deleteVolume(final int id);
-  Future<double?> getPricePerGb();
+  Future<Price?> getPricePerGb();
 }

lib/logic/cubit/provider_volumes/provider_volume_cubit.dart

@@ -7,6 +7,7 @@ import 'package:selfprivacy/logic/common_enum/common_enum.dart';
 import 'package:selfprivacy/logic/cubit/app_config_dependent/authentication_dependend_cubit.dart';
 import 'package:selfprivacy/logic/models/hive/server_details.dart';
 import 'package:selfprivacy/logic/models/disk_status.dart';
+import 'package:selfprivacy/logic/models/price.dart';
 
 part 'provider_volume_state.dart';
 
@@ -32,7 +33,7 @@ class ApiProviderVolumeCubit
     }
   }
 
-  Future<double?> getPricePerGb() async =>
+  Future<Price?> getPricePerGb() async =>
       providerApi!.getVolumeProvider().getPricePerGb();
 
   Future<void> refresh() async {

lib/logic/models/price.dart

@@ -0,0 +1,9 @@
+class Price {
+  Price({
+    required this.value,
+    required this.currency,
+  });
+
+  double value;
+  String currency;
+}

lib/ui/pages/server_storage/extending_volume.dart

@@ -4,6 +4,7 @@ import 'package:selfprivacy/logic/cubit/app_config_dependent/authentication_depe
 import 'package:selfprivacy/logic/cubit/provider_volumes/provider_volume_cubit.dart';
 import 'package:selfprivacy/logic/cubit/server_volumes/server_volume_cubit.dart';
 import 'package:selfprivacy/logic/models/disk_size.dart';
+import 'package:selfprivacy/logic/models/price.dart';
 import 'package:selfprivacy/ui/components/brand_button/filled_button.dart';
 import 'package:selfprivacy/ui/components/brand_hero_screen/brand_hero_screen.dart';
 import 'package:selfprivacy/logic/models/disk_status.dart';
@@ -67,7 +68,7 @@ class _ExtendingVolumePageState extends State<ExtendingVolumePage> {
               ],
             );
           }
-          _euroPerGb = snapshot.data as double;
+          _euroPerGb = (snapshot.data as Price).value;
           _sizeController.text = _currentSliderGbValue.truncate().toString();
           _priceController.text =
               (_euroPerGb * double.parse(_sizeController.text))

lib/ui/pages/setup/initializing/provider_picker.dart

@@ -180,7 +180,9 @@ class ProviderSelectionPage extends StatelessWidget {
               children: [
                 InkWell(
                   onTap: () {
-                    context.read<ServerInstallationCubit>().setServerProviderType(ServerProvider.hetzner);
+                    context
+                        .read<ServerInstallationCubit>()
+                        .setServerProviderType(ServerProvider.hetzner);
                     callback(ServerProvider.hetzner);
                   },
                   child: Image.asset(
@@ -193,7 +195,9 @@ class ProviderSelectionPage extends StatelessWidget {
                 ),
                 InkWell(
                   onTap: () {
-                    context.read<ServerInstallationCubit>().setServerProviderType(ServerProvider.digitalOcean);
+                    context
+                        .read<ServerInstallationCubit>()
+                        .setServerProviderType(ServerProvider.digitalOcean);
                     callback(ServerProvider.digitalOcean);
                   },
                   child: Image.asset(