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

dotenv.load_dotenv()

engine = create_engine(
    os.getenv("DB_URL"),
    pool_pre_ping=True,  # Check connection before using it
    pool_size=5,  # Connection pool size
    max_overflow=10,  # Max extra connections when pool is full
    pool_recycle=3600,  # Recycle connections after 1 hour
    echo=True,  # Log SQL queries
)

Base = declarative_base()  # Base class for ORM models

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


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