feat: add openai-compatible model gateway

backend/apps/modelhub/schemas.py

@@ -0,0 +1,83 @@
+from datetime import datetime
+from typing import Any
+from uuid import UUID
+
+from ninja import Schema
+
+
+class ModelProviderIn(Schema):
+    name: str
+    base_url: str
+    api_key: str
+    enabled: bool = True
+    default_timeout_seconds: int = 60
+
+
+class ModelProviderUpdateIn(Schema):
+    name: str | None = None
+    base_url: str | None = None
+    api_key: str | None = None
+    enabled: bool | None = None
+    default_timeout_seconds: int | None = None
+
+
+class ModelProviderOut(Schema):
+    id: int
+    name: str
+    base_url: str
+    enabled: bool
+    default_timeout_seconds: int
+    credential_set: bool
+    credential_masked: str
+    created_at: datetime
+    updated_at: datetime
+
+
+class ModelDeploymentIn(Schema):
+    provider_id: int
+    display_name: str
+    model_name: str
+    default_temperature: float = 0.2
+    max_output_tokens: int = 2048
+    enabled: bool = True
+
+
+class ModelDeploymentUpdateIn(Schema):
+    display_name: str | None = None
+    model_name: str | None = None
+    default_temperature: float | None = None
+    max_output_tokens: int | None = None
+    enabled: bool | None = None
+
+
+class ModelDeploymentOut(Schema):
+    id: int
+    provider_id: int
+    provider_name: str
+    display_name: str
+    model_name: str
+    capability: str
+    default_temperature: float
+    max_output_tokens: int
+    enabled: bool
+
+
+class ModelTestIn(Schema):
+    prompt: str = "请回复：模型连接正常"
+
+
+class ModelInvocationOut(Schema):
+    public_id: UUID
+    deployment_id: int | None
+    status: str
+    model_snapshot: dict[str, Any]
+    output_text: str
+    input_tokens: int | None
+    output_tokens: int | None
+    duration_ms: int
+    retry_count: int
+    error_code: str
+    error_message: str
+    created_at: datetime
+    started_at: datetime | None
+    finished_at: datetime | None