init commit

db.py

@@ -0,0 +1,13 @@
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from models import Base
+from dotenv import load_dotenv
+
+load_dotenv()
+DATABASE_URL = os.getenv('DATABASE_URL', 'sqlite:///bot.db')
+engine = create_engine(DATABASE_URL, echo=True)
+SessionLocal = sessionmaker(bind=engine)
+
+def init_db():
+    Base.metadata.create_all(engine)