Commit existing codebase

app/user/service.py

@@ -0,0 +1,42 @@
+from typing import Optional
+
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+
+from app.user.model import User
+
+pwd_context = CryptContext(schemes=["bcrypt"])
+
+
+def create_user(db: Session, user: User) -> User:
+    if get_user_by_username_or_email(db, user.username, user.email) is not None:
+        raise Exception()
+
+    user.password = pwd_context.hash(user.password)
+    db.add(user)
+    db.commit()
+    db.refresh(user)
+    return user
+
+
+def get_user_by_id(db: Session, id: int) -> Optional[User]:
+    return db.query(User).filter(User.id == id).one_or_none()
+
+
+def get_user_by_username(db: Session, username: str) -> Optional[User]:
+    return db.query(User).filter(User.username == username).one_or_none()
+
+
+def get_user_by_username_or_email(db: Session, username: str, email: str) -> Optional[User]:
+    return db.query(User).filter(User.username == username, User.email == email).one_or_none()
+
+
+def delete_user_by_id(db: Session, id: int):
+    user = get_user_by_id(db, id)
+    if user is not None:
+        db.delete(user)
+        db.commit()
+
+
+def passwords_match(hashed: str, raw: str) -> bool:
+    return pwd_context.verify(raw, hashed)