fix backtest credit

src/Managing.Application/Backtesting/Backtester.cs

@@ -99,6 +99,7 @@ namespace Managing.Application.Backtesting
             try
             {
                 var candles = GetCandles(config.Ticker, config.Timeframe, startDate, endDate);
+                throw new Exception();
                 return await RunBacktestWithCandles(config, candles, user, save, withCandles, requestId, metadata);
             }
             catch (Exception ex)

src/Managing.Infrastructure.Web3/Services/KaigenService.cs

@@ -99,25 +99,15 @@ public class KaigenService : IKaigenService
                 "Debiting {Amount} credits for user {UserName} (wallet: {WalletAddress}) with request ID {RequestId}",
                 debitAmount, user.Name, walletAddress, requestId);
 
-            var response = await SendAuthenticatedRequestAsync(
+            var result = await SendAuthenticatedRequestAsync(
                 $"{_settings.BaseUrl}{_settings.DebitEndpoint}",
                 requestPayload,
                 user);
 
-            if (!response.IsSuccessStatusCode)
+            if (!result.Success)
             {
-                var errorContent = await response.Content.ReadAsStringAsync();
+                _logger.LogError("Debit request failed: {Message}", result.Message);
-                _logger.LogError("Failed to debit credits. Status: {StatusCode}, Error: {Error}",
+                throw new Exception($"Debit request failed: {result.Message}");
-                    response.StatusCode, errorContent);
-                throw new Exception($"Failed to debit credits: {response.StatusCode} - {errorContent}");
-            }
-
-            var result = await response.Content.ReadFromJsonAsync<KaigenResponse>(_jsonOptions);
-
-            if (result == null || !result.Success)
-            {
-                _logger.LogError("Debit request failed: {Message}", result?.Message ?? "Unknown error");
-                throw new Exception($"Debit request failed: {result?.Message}");
             }
 
             _logger.LogInformation(
@@ -157,16 +147,14 @@ public class KaigenService : IKaigenService
                 "Refunding credits for user {UserName} (wallet: {WalletAddress}) with request ID {RequestId}",
                 user.Name, walletAddress, requestId);
 
-            var response = await SendAuthenticatedRequestAsync(
+            var result = await SendAuthenticatedRequestAsync(
                 $"{_settings.BaseUrl}{_settings.RefundEndpoint}",
                 requestPayload,
                 user);
 
-            if (!response.IsSuccessStatusCode)
+            if (!result.Success)
             {
-                var errorContent = await response.Content.ReadAsStringAsync();
+                _logger.LogError("Failed to refund credits: {Message}", result.Message);
-                _logger.LogError("Failed to refund credits. Status: {StatusCode}, Error: {Error}",
-                    response.StatusCode, errorContent);
                 return false;
             }
 
@@ -181,7 +169,7 @@ public class KaigenService : IKaigenService
         }
     }
 
-    private async Task<HttpResponseMessage> SendAuthenticatedRequestAsync(string url, object payload, User user)
+    private async Task<KaigenResponse> SendAuthenticatedRequestAsync(string url, object payload, User user)
     {
         // Create the auth token: "walletaddress-username"
         var authToken = $"{GetUserWalletAddress(user)}-{user.Name}";
@@ -200,7 +188,18 @@ public class KaigenService : IKaigenService
         };
         request.Headers.Authorization = new AuthenticationHeaderValue("Basic", base64Auth);
 
-        return await _httpClient.SendAsync(request);
+        var response = await _httpClient.SendAsync(request);
+
+        if (!response.IsSuccessStatusCode)
+        {
+            var errorContent = await response.Content.ReadAsStringAsync();
+            _logger.LogError("Request failed. Status: {StatusCode}, Error: {Error}",
+                response.StatusCode, errorContent);
+            return new KaigenResponse { Success = false, Message = $"HTTP {response.StatusCode}: {errorContent}" };
+        }
+
+        var result = await response.Content.ReadFromJsonAsync<KaigenResponse>(_jsonOptions);
+        return result ?? new KaigenResponse { Success = false, Message = "Failed to parse response" };
     }
 
     private string GetUserWalletAddress(User user)