database.py

from sqlalchemy import create_engine, Column, Integer, String, DateTime
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from datetime import datetime
import os

POSTGRES_HOST = os.environ.get("POSTGRES_HOST", "localhost")
DATABASE_URL = "postgresql://postgres:password@" + POSTGRES_HOST + "/userdb"

engine = create_engine(DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String, unique=True, index=True)
    email = Column(String, unique=True, index=True)
    hashed_password = Column(String)
    full_name = Column(String, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow)
    last_login = Column(DateTime, nullable=True)


Base.metadata.create_all(bind=engine)