text: from datetime import datetime, timedelta
  from typing import Optional
  
  from fastapi import HTTPException, status, Response, Depends
  from sqlalchemy.orm import Session
  from sqlalchemy.exc import SQLAlchemyError
  from jose import JWTError, jwt
  
  from app.helpers import hashing
  from app.schemas.users import User
  
  from app import config
  from fastapi.security import OAuth2PasswordBearer
  
  oauth2_scheme = OAuth2PasswordBearer(tokenUrl="user/login")
  
  
  def get_all(db: Session):
      try:
          result = db.query(User).all()
      except SQLAlchemyError as e:
          error = str(e.__dict__['orig'])
          raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=error)
      return result
  
  
  def create(request, db: Session):
      try:
          hashed_password = hashing.get_password_hash(request.password)
          new_user = User(name=request.name, email=request.email, password=hashed_password)
          db.add(new_user)
          db.commit()
          db.refresh(new_user)
      except SQLAlchemyError as e:
          error = str(e.__dict__['orig'])
          raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=error)
      return new_user
  
  
  def get_one(db: Session, user_id):
      try:
          user = db.query(User).filter(User.id == user_id).first()
          if not user:
              raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="User not found!")
      except SQLAlchemyError as e:
          error = str(e.__dict__['orig'])
          raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=error)
      return user
  
  
  def update(db: Session, request, user_id):
      try:
          updated = db.query(User).filter(User.id == user_id)
          if not updated.first():
              raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="User not found!")
          update_data = request.dict(exclude_unset=True)
          set_password = update_data.get("password")
          if set_password:
              update_data["password"] = hashing.get_password_hash(set_password)
          updated.update(update_data, synchronize_session=False)
          db.commit()
      except SQLAlchemyError as e:
          error = str(e.__dict__['orig'])
          raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=error)
      return updated.first()
  
  
  def destroy(db: Session, user_id):
      try:
          data = db.query(User).filter(User.id == user_id)
          if not data.first():
              raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="User not found!")
          data.delete(synchronize_session=False)
          db.commit()
      except SQLAlchemyError as e:
          error = str(e.__dict__['orig'])
          raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=error)
      return Response(status_code=status.HTTP_204_NO_CONTENT)
  
  
  def login(request, db: Session):
      user = db.query(User).filter(User.email == request.username).first()
      if not user:
          raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found!")
      if not hashing.verify_password(request.password, user.password):
          raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Your Password is incorrect!")
      access_token_expires = timedelta(minutes=config.settings.ACCESS_TOKEN_EXPIRE_MINUTES)
      access_token = create_access_token(
          data={"sub": user.email}, expires_delta=access_token_expires
      )
      return {"access_token": access_token, "token_type": "bearer"}
  
  
  def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
      to_encode = data.copy()
      if expires_delta:
          expire = datetime.utcnow() + expires_delta
      else:
          expire = datetime.utcnow() + timedelta(minutes=30)
      to_encode.update({"exp": expire})
      encoded_jwt = jwt.encode(to_encode, config.settings.SECRET_KEY, algorithm=config.settings.ALGORITHM)
      return encoded_jwt
  
  
  def verify_token(token: str, credentials_exception):
      try:
          payload = jwt.decode(token, config.settings.SECRET_KEY, algorithms=[config.settings.ALGORITHM])
          email: str = payload.get("sub")
          if email is None:
              raise credentials_exception
      except JWTError:
          raise credentials_exception
  