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

import os

# Use an environment variable for the DB path, or default to local dashy.db
# On CIFS mounts, SQLite locking will fail, so we recommend a local path.
DB_PATH = os.getenv("DASHY_DB_PATH", "./dashy.db")
SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_PATH}"

engine = create_engine(
    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False, "timeout": 30}
)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()

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