database.py

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, DeclarativeBase
from dotenv import load_dotenv
import os
from pathlib import Path

# Load .env from the project root using an absolute path
# so this works regardless of where uvicorn starts from
load_dotenv(dotenv_path=Path(__file__).parent / ".env", override=True)

DATABASE_URL = os.getenv("DATABASE_URL")

if not DATABASE_URL:
    raise RuntimeError("DATABASE_URL is not set. Check your .env file.")

engine = create_engine(DATABASE_URL, pool_pre_ping=True)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


class Base(DeclarativeBase):
    pass


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