from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from config.env_setting import settings 

engine = create_engine(
    settings.DATABASE_URL,
    pool_size=20,          
    max_overflow=10,       
    pool_timeout=30,       
    pool_recycle=1800      
)

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

Base = declarative_base()

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