Add authorization

database/crud/users.py

@@ -0,0 +1,26 @@
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.future import select
+
+from .. import models as mdl
+from .. import schemas as sch
+from ..database import add_transaction
+
+
+async def get_user(db: AsyncSession, username: str):
+    return (await db.execute(select(mdl.User).where(mdl.User.name == username))).scalar()
+
+
+async def add_user(db: AsyncSession,
+                   user_data: sch.UserCreate, hash_of_password: str):
+    user_data_db = \
+        {k: v for k, v in user_data.model_dump().items()
+         if k != "password"}
+    user = mdl.User(**user_data_db,
+                    hash_of_password=hash_of_password)
+    return await add_transaction(db, user)
+
+
+async def check_email(db: AsyncSession, email: str):
+    users = (await db.execute(select(mdl.User)
+                              .where(mdl.User.email == email))).scalars().all()
+    return True if len(users) == 0 else False