Add Jellyfin login cache and admin-only stats

backend/app/routers/auth.py

@@ -1,3 +1,5 @@
+from datetime import datetime, timedelta, timezone
+
 from fastapi import APIRouter, HTTPException, status, Depends
 from fastapi.security import OAuth2PasswordRequestForm
 
@@ -7,6 +9,7 @@ from ..db import (
     set_last_login,
     get_user_by_username,
     set_user_password,
+    set_jellyfin_auth_cache,
     get_user_activity,
     get_user_activity_summary,
     get_user_request_stats,
@@ -16,7 +19,7 @@ from ..db import (
 from ..runtime import get_runtime_settings
 from ..clients.jellyfin import JellyfinClient
 from ..clients.jellyseerr import JellyseerrClient
-from ..security import create_access_token
+from ..security import create_access_token, verify_password
 from ..auth import get_current_user
 
 router = APIRouter(prefix="/auth", tags=["auth"])
@@ -26,6 +29,31 @@ def _normalize_username(value: str) -> str:
     return value.strip().lower()
 
 
+def _is_recent_jellyfin_auth(last_auth_at: str) -> bool:
+    if not last_auth_at:
+        return False
+    try:
+        parsed = datetime.fromisoformat(last_auth_at)
+    except ValueError:
+        return False
+    if parsed.tzinfo is None:
+        parsed = parsed.replace(tzinfo=timezone.utc)
+    age = datetime.now(timezone.utc) - parsed
+    return age <= timedelta(days=7)
+
+
+def _has_valid_jellyfin_cache(user: dict, password: str) -> bool:
+    if not user or not password:
+        return False
+    cached_hash = user.get("jellyfin_password_hash")
+    last_auth_at = user.get("last_jellyfin_auth_at")
+    if not cached_hash or not last_auth_at:
+        return False
+    if not verify_password(password, cached_hash):
+        return False
+    return _is_recent_jellyfin_auth(last_auth_at)
+
+
 @router.post("/login")
 async def login(form_data: OAuth2PasswordRequestForm = Depends()) -> dict:
     user = verify_user_password(form_data.username, form_data.password)
@@ -48,14 +76,23 @@ async def jellyfin_login(form_data: OAuth2PasswordRequestForm = Depends()) -> di
     client = JellyfinClient(runtime.jellyfin_base_url, runtime.jellyfin_api_key)
     if not client.configured():
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Jellyfin not configured")
+    username = form_data.username
+    password = form_data.password
+    user = get_user_by_username(username)
+    if user and user.get("is_blocked"):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="User is blocked")
+    if user and _has_valid_jellyfin_cache(user, password):
+        token = create_access_token(username, "user")
+        set_last_login(username)
+        return {"access_token": token, "token_type": "bearer", "user": {"username": username, "role": "user"}}
     try:
-        response = await client.authenticate_by_name(form_data.username, form_data.password)
+        response = await client.authenticate_by_name(username, password)
     except Exception as exc:
         raise HTTPException(status_code=status.HTTP_502_BAD_GATEWAY, detail=str(exc)) from exc
     if not isinstance(response, dict) or not response.get("User"):
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid Jellyfin credentials")
-    create_user_if_missing(form_data.username, "jellyfin-user", role="user", auth_provider="jellyfin")
-    user = get_user_by_username(form_data.username)
+    create_user_if_missing(username, "jellyfin-user", role="user", auth_provider="jellyfin")
+    user = get_user_by_username(username)
     if user and user.get("is_blocked"):
         raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="User is blocked")
     try:
@@ -69,9 +106,10 @@ async def jellyfin_login(form_data: OAuth2PasswordRequestForm = Depends()) -> di
                     create_user_if_missing(name, "jellyfin-user", role="user", auth_provider="jellyfin")
     except Exception:
         pass
-    token = create_access_token(form_data.username, "user")
-    set_last_login(form_data.username)
-    return {"access_token": token, "token_type": "bearer", "user": {"username": form_data.username, "role": "user"}}
+    set_jellyfin_auth_cache(username, password)
+    token = create_access_token(username, "user")
+    set_last_login(username)
+    return {"access_token": token, "token_type": "bearer", "user": {"username": username, "role": "user"}}
 
 
 @router.post("/jellyseerr/login")
@@ -107,18 +145,19 @@ async def profile(current_user: dict = Depends(get_current_user)) -> dict:
     username_norm = _normalize_username(username) if username else ""
     stats = get_user_request_stats(username_norm)
     global_total = get_global_request_total()
-    leader = get_global_request_leader()
     share = (stats.get("total", 0) / global_total) if global_total else 0
     activity_summary = get_user_activity_summary(username) if username else {}
     activity_recent = get_user_activity(username, limit=5) if username else []
+    stats_payload = {
+        **stats,
+        "share": share,
+        "global_total": global_total,
+    }
+    if current_user.get("role") == "admin":
+        stats_payload["most_active_user"] = get_global_request_leader()
     return {
         "user": current_user,
-        "stats": {
-            **stats,
-            "share": share,
-            "global_total": global_total,
-            "most_active_user": leader,
-        },
+        "stats": stats_payload,
         "activity": {
             **activity_summary,
             "recent": activity_recent,