initialer commit, Grundcode

backend/database.py

@@ -0,0 +1,24 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, DeclarativeBase
+from pathlib import Path
+import os
+
+DATA_DIR = Path(os.environ.get("DATA_DIR", Path(__file__).parent.parent / "data"))
+DATA_DIR.mkdir(parents=True, exist_ok=True)
+
+DATABASE_URL = f"sqlite:///{DATA_DIR}/calendarr.db"
+
+engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()