feat(region): Implement endpoints for listing available types by region

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

@@ -5,6 +5,7 @@ import 'package:dio/dio.dart';
 import 'package:selfprivacy/config/get_it_config.dart';
 import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/volume_provider.dart';
 import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/server_provider.dart';
+import 'package:selfprivacy/logic/models/disk_size.dart';
 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';
@@ -12,6 +13,7 @@ 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/logic/models/server_provider_location.dart';
+import 'package:selfprivacy/logic/models/server_type.dart';
 import 'package:selfprivacy/utils/password_generator.dart';
 
 class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
@@ -582,7 +584,7 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
 
     final Dio client = await getClient();
     try {
-      final Response response = await client.post(
+      final Response response = await client.get(
         '/locations',
       );
 
@@ -591,6 +593,7 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
           title: location['slug'],
           description: location['name'],
           flag: getEmojiFlag(location['slug']),
+          identifier: location['slug'],
         ),
       );
     } catch (e) {
@@ -602,6 +605,46 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
     return locations;
   }
 
+  @override
+  Future<List<ServerType>> getServerTypesByLocation({
+    required final ServerProviderLocation location,
+  }) async {
+    final List<ServerType> types = [];
+
+    final Dio client = await getClient();
+    try {
+      final Response response = await client.get(
+        '/sizes',
+      );
+      final rawSizes = response.data!['sizes'];
+      for (final rawSize in rawSizes) {
+        for (final rawRegion in rawSize['regions']) {
+          if (rawRegion.toString() == location.identifier) {
+            types.add(
+              ServerType(
+                title: rawSize['description'],
+                identifier: rawSize['slug'],
+                ram: rawSize['memory'],
+                cores: rawSize['vcpus'],
+                disk: DiskSize(byte: rawSize['disk'] * 1024 * 1024 * 1024),
+                price: Price(
+                  value: rawSize['price_monthly'],
+                  currency: 'USD',
+                ),
+              ),
+            );
+          }
+        }
+      }
+    } catch (e) {
+      print(e);
+    } finally {
+      close(client);
+    }
+
+    return types;
+  }
+
   @override
   Future<void> createReverseDns({
     required final ServerHostingDetails serverDetails,

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

@@ -5,6 +5,7 @@ import 'package:dio/dio.dart';
 import 'package:selfprivacy/config/get_it_config.dart';
 import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/volume_provider.dart';
 import 'package:selfprivacy/logic/api_maps/rest_maps/server_providers/server_provider.dart';
+import 'package:selfprivacy/logic/models/disk_size.dart';
 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';
@@ -12,6 +13,7 @@ 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/logic/models/server_provider_location.dart';
+import 'package:selfprivacy/logic/models/server_type.dart';
 import 'package:selfprivacy/utils/password_generator.dart';
 
 class HetznerApi extends ServerProviderApi with VolumeProviderApi {
@@ -567,7 +569,7 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
 
     final Dio client = await getClient();
     try {
-      final Response response = await client.post(
+      final Response response = await client.get(
         '/locations',
       );
 
@@ -576,6 +578,7 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
           title: location['city'],
           description: location['description'],
           flag: getEmojiFlag(location['country']),
+          identifier: location['name'],
         ),
       );
     } catch (e) {
@@ -587,6 +590,46 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
     return locations;
   }
 
+  @override
+  Future<List<ServerType>> getServerTypesByLocation({
+    required final ServerProviderLocation location,
+  }) async {
+    final List<ServerType> types = [];
+
+    final Dio client = await getClient();
+    try {
+      final Response response = await client.get(
+        '/server_types',
+      );
+      final rawTypes = response.data!['server_types'];
+      for (final rawType in rawTypes) {
+        for (final rawPrice in rawType['prices']) {
+          if (rawPrice['location'].toString() == location.identifier) {
+            types.add(
+              ServerType(
+                title: rawType['description'],
+                identifier: rawType['name'],
+                ram: rawType['memory'],
+                cores: rawType['cores'],
+                disk: DiskSize(byte: rawType['disk'] * 1024 * 1024 * 1024),
+                price: Price(
+                  value: rawPrice['price_monthly']['gross'],
+                  currency: 'EUR',
+                ),
+              ),
+            );
+          }
+        }
+      }
+    } catch (e) {
+      print(e);
+    } finally {
+      close(client);
+    }
+
+    return types;
+  }
+
   @override
   Future<void> createReverseDns({
     required final ServerHostingDetails serverDetails,

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

@@ -4,10 +4,14 @@ import 'package:selfprivacy/logic/models/hive/server_domain.dart';
 import 'package:selfprivacy/logic/models/hive/user.dart';
 import 'package:selfprivacy/logic/models/server_basic_info.dart';
 import 'package:selfprivacy/logic/models/server_provider_location.dart';
+import 'package:selfprivacy/logic/models/server_type.dart';
 
 abstract class ServerProviderApi extends ApiMap {
   Future<List<ServerBasicInfo>> getServers();
   Future<List<ServerProviderLocation>> getAvailableLocations();
+  Future<List<ServerType>> getServerTypesByLocation({
+    required final ServerProviderLocation location,
+  });
 
   Future<ServerHostingDetails> restart();
   Future<ServerHostingDetails> powerOn();

lib/logic/models/server_provider_location.dart

@@ -1,11 +1,13 @@
 class ServerProviderLocation {
   ServerProviderLocation({
     required this.title,
+    required this.identifier,
     this.description,
     this.flag,
   });
 
   final String title;
+  final String identifier;
   final String? description;
 
   /// as emoji

lib/logic/models/server_type.dart

@@ -0,0 +1,19 @@
+import 'package:selfprivacy/logic/models/disk_size.dart';
+import 'package:selfprivacy/logic/models/price.dart';
+
+class ServerType {
+  ServerType({
+    required this.title,
+    required this.identifier,
+    required this.ram,
+    required this.cores,
+    required this.disk,
+    required this.price,
+  });
+  final String title;
+  final String identifier;
+  final double ram;
+  final DiskSize disk;
+  final int cores;
+  final Price price;
+}