from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base
from app.config import settings

engine = create_engine(
    settings.DATABASE_URL, 
    connect_args={"check_same_thread": False} if "sqlite" in settings.DATABASE_URL else {}
)

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

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

def init_db():
    from app.models.device import Device
    from app.models.cloth import Cloth
    from app.models.apikey import ApiKey
    from app.models.command import FleetCommand
    from app.models.telemetry import TryOnSession
    Base.metadata.create_all(bind=engine)