Refactor models and routes for item management

Reorganized model structure by replacing 'object' and 'items' with a unified 'item' model using UUIDs, and moved base model logic into separate files. Updated routes to use the new item model and improved request/response handling. Enhanced user and setting models, added utility functions, and improved error handling throughout the codebase. Also added initial .idea project files and minor admin API improvements.

Co-Authored-By: 砂糖橘 <54745033+Foxerine@users.noreply.github.com>

routes/admin.py

@@ -1,9 +1,12 @@
-from fastapi import APIRouter
+from typing import Annotated
+
+from fastapi import APIRouter, HTTPException
 from fastapi import Depends
-from model.response import DefaultResponse
+from sqlalchemy.ext.asyncio import AsyncSession
 
 from middleware.admin import is_admin
-        
+from model import database, Setting, SettingResponse
+from model.response import DefaultResponse
 
 Router = APIRouter(
     prefix='/api/admin', 
@@ -25,4 +28,52 @@ async def verity_admin() -> DefaultResponse:
     - 若为管理员，返回 `True`
     - 若不是管理员，抛出 `401` 错误
     '''
+    return DefaultResponse(data=True)
+
+@Router.get(
+    path='api/admin/settings',
+    summary='获取设置项',
+    description='获取设置项, 留空则获取所有',
+    response_model=DefaultResponse,
+    response_description='设置项列表'
+)
+async def get_settings(
+    session: Annotated[AsyncSession, Depends(database.Database.get_session)],
+    name: str | None = None
+) -> DefaultResponse:
+    data = []
+
+    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 = await Setting.get(session, fetch_mode="all")
+        if settings:
+            data = [SettingResponse.model_validate(s) for s in settings]
+
+    return DefaultResponse(data=data)
+
+
+@Router.put(
+    path='api/admin/settings',
+    summary='更新设置项',
+    description='更新设置项',
+    response_model=DefaultResponse,
+    response_description='更新结果'
+)
+async def update_settings(
+    session: Annotated[AsyncSession, Depends(database.Database.get_session)],
+    name: str,
+    value: str
+) -> DefaultResponse:
+    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 DefaultResponse(data=True)