added RAG, Multiuser, TG bot

backend/app/auth/deps.py

@@ -0,0 +1,34 @@
+from fastapi import Depends, HTTPException, Request, status
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.auth.tokens import hash_token
+from app.db.base import get_db
+from app.db.models import User
+
+
+def _extract_token(request: Request) -> str | None:
+    auth = request.headers.get("Authorization", "")
+    if auth.lower().startswith("bearer "):
+        token = auth[7:].strip()
+        if token:
+            return token
+    header = request.headers.get("X-API-Token", "").strip()
+    return header or None
+
+
+def get_current_user(
+    request: Request,
+    db: Session = Depends(get_db),
+) -> User:
+    token = _extract_token(request)
+    if not token:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Missing API token")
+
+    token_hash = hash_token(token)
+    user = db.scalar(
+        select(User).where(User.api_token_hash == token_hash, User.is_active.is_(True))
+    )
+    if not user:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid API token")
+    return user