feat: Implement error handling for server installation

Now user gets notified when connection error occurs

lib/logic/api_maps/rest_maps/dns_providers/cloudflare/cloudflare.dart

@@ -113,7 +113,7 @@ class CloudflareApi extends DnsProviderApi {
   }
 
   @override
-  Future<void> removeSimilarRecords({
+  Future<APIGenericResult<void>> removeSimilarRecords({
     required final ServerDomain domain,
     final String? ip4,
   }) async {
@@ -139,9 +139,16 @@ class CloudflareApi extends DnsProviderApi {
       await Future.wait(allDeleteFutures);
     } catch (e) {
       print(e);
+      return APIGenericResult(
+        success: false,
+        data: null,
+        message: e.toString(),
+      );
     } finally {
       close(client);
     }
+
+    return APIGenericResult(success: true, data: null);
   }
 
   @override
@@ -183,7 +190,7 @@ class CloudflareApi extends DnsProviderApi {
   }
 
   @override
-  Future<void> createMultipleDnsRecords({
+  Future<APIGenericResult<void>> createMultipleDnsRecords({
     required final ServerDomain domain,
     final String? ip4,
   }) async {
@@ -206,9 +213,18 @@ class CloudflareApi extends DnsProviderApi {
     } on DioError catch (e) {
       print(e.message);
       rethrow;
+    } catch (e) {
+      print(e);
+      return APIGenericResult(
+        success: false,
+        data: null,
+        message: e.toString(),
+      );
     } finally {
       close(client);
     }
+
+    return APIGenericResult(success: true, data: null);
   }
 
   List<DnsRecord> projectDnsRecords(

lib/logic/api_maps/rest_maps/dns_providers/dns_provider.dart

@@ -14,11 +14,11 @@ abstract class DnsProviderApi extends ApiMap {
   Future<List<DnsRecord>> getDnsRecords({
     required final ServerDomain domain,
   });
-  Future<void> removeSimilarRecords({
+  Future<APIGenericResult<void>> removeSimilarRecords({
     required final ServerDomain domain,
     final String? ip4,
   });
-  Future<void> createMultipleDnsRecords({
+  Future<APIGenericResult<void>> createMultipleDnsRecords({
     required final ServerDomain domain,
     final String? ip4,
   });

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

@@ -790,11 +790,13 @@ class DigitalOceanApi extends ServerProviderApi with VolumeProviderApi {
   }
 
   @override
-  Future<void> createReverseDns({
+  Future<APIGenericResult<void>> createReverseDns({
     required final ServerHostingDetails serverDetails,
     required final ServerDomain domain,
   }) async {
     /// TODO remove from provider interface
+    const bool success = true;
+    return APIGenericResult(success: success, data: null);
   }
 
   @override

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

@@ -788,7 +788,7 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
   }
 
   @override
-  Future<void> createReverseDns({
+  Future<APIGenericResult<void>> createReverseDns({
     required final ServerHostingDetails serverDetails,
     required final ServerDomain domain,
   }) async {
@@ -803,8 +803,15 @@ class HetznerApi extends ServerProviderApi with VolumeProviderApi {
       );
     } catch (e) {
       print(e);
+      return APIGenericResult(
+        success: false,
+        data: null,
+        message: e.toString(),
+      );
     } finally {
       close(client);
     }
+
+    return APIGenericResult(success: true, data: null);
   }
 }

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

@@ -38,7 +38,7 @@ abstract class ServerProviderApi extends ApiMap {
     required final String domainName,
     required final String serverType,
   });
-  Future<void> createReverseDns({
+  Future<APIGenericResult<void>> createReverseDns({
     required final ServerHostingDetails serverDetails,
     required final ServerDomain domain,
   });

lib/logic/cubit/server_installation/server_installation_repository.dart

@@ -334,21 +334,9 @@ class ServerInstallationRepository {
     final ServerProviderApi serverApi =
         ApiController.currentServerProviderApiFactory!.getServerProvider();
 
-    await dnsProviderApi.removeSimilarRecords(
+    void showDomainErrorPopUp(final String error) {
-      ip4: serverDetails.ip4,
-      domain: domain,
-    );
-
-    try {
-      await dnsProviderApi.createMultipleDnsRecords(
-        ip4: serverDetails.ip4,
-        domain: domain,
-      );
-    } on DioError catch (e) {
       showPopUpAlert(
-        alertTitle: e.response!.data['errors'][0]['code'] == 1038
+        alertTitle: error,
-            ? 'modals.you_cant_use_this_api'.tr()
-            : 'domain.error'.tr(),
         description: 'modals.delete_server_volume'.tr(),
         cancelButtonOnPressed: onCancel,
         actionButtonTitle: 'basis.delete'.tr(),
@@ -359,14 +347,50 @@ class ServerInstallationRepository {
           onCancel();
         },
       );
+    }
+
+    final APIGenericResult removingResult =
+        await dnsProviderApi.removeSimilarRecords(
+      ip4: serverDetails.ip4,
+      domain: domain,
+    );
+
+    if (!removingResult.success) {
+      showDomainErrorPopUp('domain.error'.tr());
       return false;
     }
 
+    bool createdSuccessfully = false;
+    String errorMessage = 'domain.error'.tr();
+    try {
+      final APIGenericResult createResult =
+          await dnsProviderApi.createMultipleDnsRecords(
+        ip4: serverDetails.ip4,
+        domain: domain,
+      );
+      createdSuccessfully = createResult.success;
+    } on DioError catch (e) {
+      if (e.response!.data['errors'][0]['code'] == 1038) {
+        errorMessage = 'modals.you_cant_use_this_api'.tr();
+      }
+    }
+
+    if (!createdSuccessfully) {
+      showDomainErrorPopUp(errorMessage);
+      return false;
+    }
+
+    final APIGenericResult createReverseResult =
         await serverApi.createReverseDns(
       serverDetails: serverDetails,
       domain: domain,
     );
 
+    if (!createReverseResult.success) {
+      showDomainErrorPopUp(errorMessage);
+      return false;
+    }
+
     return true;
   }