feat: implement AI model API proxy service

backend/app/models/__init__.py

@@ -0,0 +1,7 @@
+"""Database models."""
+from .client_key import ClientKey
+from .provider import Provider
+from .provider_key import ProviderKey
+from .request_log import RequestLog
+
+__all__ = ["ClientKey", "Provider", "ProviderKey", "RequestLog"]

backend/app/models/client_key.py

@@ -0,0 +1,13 @@
+"""Client API Key model."""
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class ClientKey:
+    """Client API key for authentication."""
+    id: int
+    key: str
+    name: Optional[str]
+    is_active: bool
+    created_at: str

backend/app/models/provider.py

@@ -0,0 +1,13 @@
+"""Provider model."""
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class Provider:
+    """Model provider configuration."""
+    id: int
+    name: str
+    base_url: str
+    api_type: str
+    is_active: bool

backend/app/models/provider_key.py

@@ -0,0 +1,13 @@
+"""Provider API Key model."""
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class ProviderKey:
+    """API key for a provider."""
+    id: int
+    provider_id: int
+    key: str
+    is_active: bool
+    created_at: str

backend/app/models/request_log.py

@@ -0,0 +1,18 @@
+"""Request log model."""
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class RequestLog:
+    """Request log entry."""
+    id: Optional[int]
+    client_key_id: int
+    provider_id: int
+    model: str
+    prompt_tokens: Optional[int]
+    completion_tokens: Optional[int]
+    latency_ms: Optional[int]
+    success: bool
+    error_message: Optional[str]
+    created_at: Optional[str]