add credential-removed to the model list api

api/core/entities/model_entities.py

@@ -19,6 +19,7 @@ class ModelStatus(Enum):
     QUOTA_EXCEEDED = "quota-exceeded"
     NO_PERMISSION = "no-permission"
     DISABLED = "disabled"
+    CREDENTIAL_REMOVED = "credential-removed"
 
 
 class SimpleModelProviderEntity(BaseModel):

api/core/entities/provider_configuration.py

@@ -1598,6 +1598,9 @@ class ProviderConfiguration(BaseModel):
                 if len(model_setting.load_balancing_configs) > 1:
                     load_balancing_enabled = True
 
+            if len(model_configuration.available_model_credentials) > 0 and not model_configuration.credentials:
+                status = ModelStatus.CREDENTIAL_REMOVED
+
             provider_models.append(
                 ModelWithProviderEntity(
                     model=custom_model_schema.model,

api/core/entities/provider_entities.py

@@ -107,7 +107,7 @@ class CustomModelConfiguration(BaseModel):
 
     model: str
     model_type: ModelType
-    credentials: dict
+    credentials: dict | None
     current_credential_id: Optional[str] = None
     available_model_credentials: list[CredentialConfiguration] = []
 

api/core/provider_manager.py

@@ -726,7 +726,7 @@ class ProviderManager:
             # Get cached provider model credentials
             cached_provider_model_credentials = provider_model_credentials_cache.get()
 
-            if not cached_provider_model_credentials:
+            if not cached_provider_model_credentials and provider_model_record.encrypted_config:
                 try:
                     provider_model_credentials = json.loads(provider_model_record.encrypted_config)
                 except JSONDecodeError: