Split backend into multiple files

backend/dependencies.py

@@ -0,0 +1,39 @@
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPAuthorizationCredentials
+from sqlalchemy.orm import Session
+from utils import *
+from models import *
+from db import SessionLocal
+from app import security
+
+
+# Зависимость для получения текущего пользователя
+def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(lambda: SessionLocal())
+):
+    token = credentials.credentials
+    payload = verify_token(token)
+    if not payload:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    user = db.query(User).filter(User.id == payload["user_id"]).first()
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="User not found",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    return {"user_id": user.id, "username": user.username}
+
+
+# Зависимость для получения сессии БД
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()