"""
Database connection — SQLAlchemy + PostgreSQL (Supabase)
"""

import os
from dotenv import load_dotenv
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

load_dotenv()

DATABASE_URL = os.getenv("DATABASE_URL")

if not DATABASE_URL:
    raise RuntimeError("DATABASE_URL is not set in .env")

engine = create_engine(
    DATABASE_URL,
    pool_pre_ping=True,
    pool_recycle=3600,
    echo=False,
)

SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()


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