import os
from dotenv import load_dotenv
from sqlalchemy.orm import sessionmaker
from sqlalchemy import create_engine
from sqlalchemy.orm import declarative_base
from passlib.context import CryptContext

# Load environment variables
load_dotenv()

DATABASE_URL = os.getenv("DATABASE_URL", "postgresql://postgres:postgres@localhost:5432/postgres")

engine = create_engine(DATABASE_URL)
SessionLocal = sessionmaker(bind=engine)
Base = declarative_base()

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()

def hash_password(pw: str) -> str:
    return pwd_context.hash(pw)

def verify_password(pw: str, hashed: str) -> bool:
    return pwd_context.verify(pw, hashed)