database.py

from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from config import get_settings

settings = get_settings()

# Create MySQL engine
engine = create_engine(
    settings.DATABASE_URL,
    pool_pre_ping=True,  # Verify connections before using
    pool_recycle=3600,  # Recycle connections after 1 hour
    pool_size=10,  # Number of connections to maintain
    max_overflow=20,  # Maximum overflow connections
    echo=settings.DEBUG,  # Log SQL queries in debug mode
)

# Create SessionLocal class
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Base class for models
Base = declarative_base()


# Dependency to get database session
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()