迁移服务层

services/admin.py

@@ -0,0 +1,52 @@
+"""
+管理员相关业务逻辑。
+"""
+
+from typing import Iterable, List
+
+from fastapi import HTTPException
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from model import Setting
+from model import SettingResponse
+
+
+async def fetch_settings(
+    session: AsyncSession,
+    name: str | None = None,
+) -> List[SettingResponse]:
+    """
+    按名称获取设置项，默认返回全部。
+    """
+    data: list[SettingResponse] = []
+
+    if name:
+        setting = await Setting.get(session, Setting.name == name)
+        if setting:
+            data.append(SettingResponse.model_validate(setting))
+        else:
+            raise HTTPException(404, detail="Setting not found")
+    else:
+        settings: Iterable[Setting] | None = await Setting.get(session, fetch_mode="all")
+        if settings:
+            data = [SettingResponse.model_validate(s) for s in settings]
+
+    return data
+
+
+async def update_setting_value(
+    session: AsyncSession,
+    name: str,
+    value: str,
+) -> bool:
+    """
+    更新设置项的值。
+    """
+    setting = await Setting.get(session, Setting.name == name)
+    if not setting:
+        raise HTTPException(404, detail="Setting not found")
+
+    setting.value = value
+    await Setting.save(session)
+
+    return True