feat: add multi model credentials (#24451)

Co-authored-by: zxhlyh <jasonapring2015@outlook.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

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):
@@ -54,6 +55,7 @@ class ProviderModelWithStatusEntity(ProviderModel):
 
     status: ModelStatus
     load_balancing_enabled: bool = False
+    has_invalid_load_balancing_configs: bool = False
 
     def raise_for_status(self) -> None:
         """

api/core/entities/provider_entities.py

@@ -69,6 +69,15 @@ class QuotaConfiguration(BaseModel):
     restrict_models: list[RestrictModel] = []
 
 
+class CredentialConfiguration(BaseModel):
+    """
+    Model class for credential configuration.
+    """
+
+    credential_id: str
+    credential_name: str
+
+
 class SystemConfiguration(BaseModel):
     """
     Model class for provider system configuration.
@@ -86,6 +95,9 @@ class CustomProviderConfiguration(BaseModel):
     """
 
     credentials: dict
+    current_credential_id: Optional[str] = None
+    current_credential_name: Optional[str] = None
+    available_credentials: list[CredentialConfiguration] = []
 
 
 class CustomModelConfiguration(BaseModel):
@@ -95,7 +107,10 @@ class CustomModelConfiguration(BaseModel):
 
     model: str
     model_type: ModelType
-    credentials: dict
+    credentials: dict | None
+    current_credential_id: Optional[str] = None
+    current_credential_name: Optional[str] = None
+    available_model_credentials: list[CredentialConfiguration] = []
 
     # pydantic configs
     model_config = ConfigDict(protected_namespaces=())
@@ -118,6 +133,7 @@ class ModelLoadBalancingConfiguration(BaseModel):
     id: str
     name: str
     credentials: dict
+    credential_source_type: str | None = None
 
 
 class ModelSettings(BaseModel):