finish app develop

app/config.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+
+import yaml
+
+
+@dataclass(frozen=True)
+class ProviderConfig:
+    api_key: str
+    base_url: str
+    max_tokens: int
+    model: str
+    temperature: float
+
+    @property
+    def chat_completions_url(self) -> str:
+        base_url = self.base_url.rstrip("/")
+        if base_url.endswith("/chat/completions"):
+            return base_url
+        return f"{base_url}/chat/completions"
+
+
+@dataclass(frozen=True)
+class ApiSettings:
+    provider_name: str
+    provider: ProviderConfig
+
+
+def load_api_config(path: Path | str = Path("configs/api_config.yaml"), provider_name: str | None = None) -> ApiSettings:
+    config_path = Path(path)
+    data = yaml.safe_load(config_path.read_text(encoding="utf-8")) or {}
+    selected_name = provider_name or data.get("default_provider")
+    providers = data.get("providers", {})
+
+    if not selected_name:
+        raise ValueError("api_config.yaml missing default_provider")
+    if selected_name not in providers:
+        raise ValueError(f"provider not found in api_config.yaml: {selected_name}")
+
+    provider_data = providers[selected_name]
+    provider = ProviderConfig(
+        api_key=str(provider_data.get("api_key", "")),
+        base_url=str(provider_data["base_url"]),
+        max_tokens=int(provider_data.get("max_tokens", 4096)),
+        model=str(provider_data["model"]),
+        temperature=float(provider_data.get("temperature", 0.7)),
+    )
+    return ApiSettings(provider_name=selected_name, provider=provider)