feat: initial commit

backend/app/database.py

@@ -0,0 +1,27 @@
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, DeclarativeBase
+
+DATA_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "data")
+os.makedirs(DATA_DIR, exist_ok=True)
+
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{os.path.join(DATA_DIR, 'kopilka.db')}"
+
+engine = create_engine(
+    SQLALCHEMY_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()