✨ feat(service): 新增用户与物品服务层实现

- 添加UserService类实现用户创建、更新及认证功能
- 添加ItemService类实现物品创建逻辑
- 引入服务层隔离业务逻辑与数据库操作

♻️ refactor(test): 重构测试用例结构
- 删除旧版CRUD测试文件test_user.py
- 更新测试工具模块导入路径
- 调整模型引用路径至新的model目录结构

Author: lucien277

backend/app/service/__init__.py

@@ -0,0 +1,12 @@
+import uuid
+from sqlmodel import Session
+
+from app.model.items import Item, ItemCreate
+
+
+class ItemService:
+    def __init__(self, session: Session):
+        self.session = session
+
+    def create_item(self, item_in: ItemCreate, owner_id: uuid.UUID) -> Item:
+        return Item.create(self.session, item_in, owner_id)

backend/app/service/item_service.py

@@ -0,0 +1,27 @@
+from typing import Any
+from sqlmodel import Session
+
+from app.model.users import User, UserCreate, UserUpdate
+from app.core.security import verify_password
+
+
+class UserService:
+    def __init__(self, session: Session):
+        self.session = session
+
+    def create_user(self, user_create: UserCreate) -> User:
+        return User.create(self.session, user_create)
+
+    def update_user(self, db_user: User, user_in: UserUpdate) -> Any:
+        return User.update(self.session, db_user, user_in)
+
+    def get_user_by_email(self, email: str) -> User | None:
+        return User.get_by_email(self.session, email)
+
+    def authenticate(self, email: str, password: str) -> User | None:
+        db_user = self.get_user_by_email(email)
+        if not db_user:
+            return None
+        if not verify_password(password, db_user.hashed_password):
+            return None
+        return db_user

backend/app/service/user_service.py

@@ -1,7 +1,7 @@
 from sqlmodel import Session
 
 from app import crud
-from app.models import Item, ItemCreate
+from app.model.items import Item, ItemCreate
 from app.tests.utils.user import create_random_user
 from app.tests.utils.utils import random_lower_string
 

backend/app/tests/crud/test_user.py

@@ -1,9 +1,9 @@
 from fastapi.testclient import TestClient
 from sqlmodel import Session
 
-from app import crud
+from app.service.user_service import UserService
 from app.core.config import settings
-from app.models import User, UserCreate, UserUpdate
+from app.model.users import User, UserCreate, UserUpdate
 from app.tests.utils.utils import random_email, random_lower_string
 
 
@@ -23,7 +23,8 @@ def create_random_user(db: Session) -> User:
     email = random_email()
     password = random_lower_string()
     user_in = UserCreate(email=email, password=password)
-    user = crud.create_user(session=db, user_create=user_in)
+    user_service = UserService(db)
+    user = user_service.create_user(user_in)
     return user
 
 
@@ -36,14 +37,15 @@ def authentication_token_from_email(
     If the user doesn't exist it is created first.
     """
     password = random_lower_string()
-    user = crud.get_user_by_email(session=db, email=email)
+    user_service = UserService(db)
+    user = user_service.get_user_by_email(email=email)
     if not user:
         user_in_create = UserCreate(email=email, password=password)
-        user = crud.create_user(session=db, user_create=user_in_create)
+        user = user_service.create_user(user_in_create)
     else:
         user_in_update = UserUpdate(password=password)
         if not user.id:
             raise Exception("User id not set")
-        user = crud.update_user(session=db, db_user=user, user_in=user_in_update)
-
+        user_service = UserService(db)
+        user = user_service.update_user(user, user_in_update)
     return user_authentication_headers(client=client, email=email, password=password)