feat: initialize aivideo project

backend/app/modules/users/service.py

@@ -0,0 +1,31 @@
+from sqlalchemy.orm import Session
+
+from app.common.errors.app_error import ConflictAppError
+from app.models.entities import User
+from app.modules.users.repository import UsersRepository
+
+
+class UsersService:
+    def __init__(self, db: Session) -> None:
+        self.db = db
+        self.repository = UsersRepository(db)
+
+    def update_profile(self, user: User, payload) -> dict:
+        if payload.username and payload.username != user.username:
+            existing = self.repository.get_by_username(payload.username)
+            if existing and existing.id != user.id:
+                raise ConflictAppError("username already exists", code=10011)
+            user.username = payload.username
+        if payload.nickname is not None:
+            user.nickname = payload.nickname
+        if payload.avatar_url is not None:
+            user.avatar_url = payload.avatar_url
+        self.db.commit()
+        return {
+            "publicId": user.public_id,
+            "username": user.username or "",
+            "nickname": user.nickname,
+            "avatarUrl": user.avatar_url,
+            "email": user.email or "",
+        }
+