Show LLM provider issues to the user (#384)

app/MindWork AI Studio/Provider/BaseProvider.cs

@@ -116,9 +116,50 @@ public abstract class BaseProvider : IProvider, ISecretId
                 response = nextResponse;
                 break;
             }
+
+            if (nextResponse.StatusCode is HttpStatusCode.Forbidden)
+            {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Block, $"Tried to communicate with the LLM provider '{this.InstanceName}'. You might not be able to use this provider from your location. The provider message is: '{nextResponse.ReasonPhrase}'"));
+                this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
+                errorMessage = nextResponse.ReasonPhrase;
+                break;
+            }
             
             if(nextResponse.StatusCode is HttpStatusCode.BadRequest)
             {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.CloudOff, $"Tried to communicate with the LLM provider '{this.InstanceName}'. The required message format might be changed. The provider message is: '{nextResponse.ReasonPhrase}'"));
+                this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
+                errorMessage = nextResponse.ReasonPhrase;
+                break;
+            }
+            
+            if(nextResponse.StatusCode is HttpStatusCode.NotFound)
+            {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.CloudOff, $"Tried to communicate with the LLM provider '{this.InstanceName}'. Something was not found. The provider message is: '{nextResponse.ReasonPhrase}'"));
+                this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
+                errorMessage = nextResponse.ReasonPhrase;
+                break;
+            }
+            
+            if(nextResponse.StatusCode is HttpStatusCode.Unauthorized)
+            {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Key, $"Tried to communicate with the LLM provider '{this.InstanceName}'. The API key might be invalid. The provider message is: '{nextResponse.ReasonPhrase}'"));
+                this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
+                errorMessage = nextResponse.ReasonPhrase;
+                break;
+            }
+            
+            if(nextResponse.StatusCode is HttpStatusCode.InternalServerError)
+            {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.CloudOff, $"Tried to communicate with the LLM provider '{this.InstanceName}'. The server might be down or having issues. The provider message is: '{nextResponse.ReasonPhrase}'"));
+                this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
+                errorMessage = nextResponse.ReasonPhrase;
+                break;
+            }
+            
+            if(nextResponse.StatusCode is HttpStatusCode.ServiceUnavailable)
+            {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.CloudOff, $"Tried to communicate with the LLM provider '{this.InstanceName}'. The provider is overloaded. The message is: '{nextResponse.ReasonPhrase}'"));
                 this.logger.LogError($"Failed request with status code {nextResponse.StatusCode} (message = '{nextResponse.ReasonPhrase}').");
                 errorMessage = nextResponse.ReasonPhrase;
                 break;
@@ -134,8 +175,11 @@ public abstract class BaseProvider : IProvider, ISecretId
         }
         
         if(retry >= MAX_RETRIES || !string.IsNullOrWhiteSpace(errorMessage))
+        {
+            await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.CloudOff, $"Tried to communicate with the LLM provider '{this.InstanceName}'. Even after {MAX_RETRIES} retries, there were some problems with the request. The provider message is: '{errorMessage}'"));
             return new HttpRateLimitedStreamResult(false, true, errorMessage ?? $"Failed after {MAX_RETRIES} retries; no provider message available", response);
-        
+        }
+
         return new HttpRateLimitedStreamResult(true, false, string.Empty, response);
     }
 
@@ -160,6 +204,7 @@ public abstract class BaseProvider : IProvider, ISecretId
         }
         catch(Exception e)
         {
+            await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Stream, $"Tried to communicate with the LLM provider '{this.InstanceName}'. There were some problems with the request. The provider message is: '{e.Message}'"));
             this.logger.LogError($"Failed to stream chat completion from {providerName} '{this.InstanceName}': {e.Message}");
         }
 
@@ -176,6 +221,7 @@ public abstract class BaseProvider : IProvider, ISecretId
             }
             catch (Exception e)
             {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Stream, $"Tried to stream the LLM provider '{this.InstanceName}' answer. There were some problems with the stream. The message is: '{e.Message}'"));
                 this.logger.LogWarning($"Failed to read the end-of-stream state from {providerName} '{this.InstanceName}': {e.Message}");
                 break;
             }
@@ -196,6 +242,7 @@ public abstract class BaseProvider : IProvider, ISecretId
             }
             catch (Exception e)
             {
+                await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.Stream, $"Tried to stream the LLM provider '{this.InstanceName}' answer. Was not able to read the stream. The message is: '{e.Message}'"));
                 this.logger.LogError($"Failed to read the stream from {providerName} '{this.InstanceName}': {e.Message}");
                 break;
             }