fix: sécuriser watchlist, favorites, downloads et recommendations sans auth (#15)

- router_favorites.py: toutes les routes requièrent maintenant l'auth
  - GET utilise get_optional_user + login_prompt.html pour HTMX
  - POST/DELETE/toggle requièrent get_current_user_from_token
  - Filtrage par user_id dans toutes les requêtes favorites
- router_downloads.py: GET list et GET status protégés (401 sans token)
- router_recommendations.py: GET protégé (login_prompt HTMX, 401 JSON)
- router_sonarr.py: tous les endpoints de gestion protégés
  - Webhooks restent publics (reçus de Sonarr)
- app/favorites.py: ajout du paramètre user_id à toutes les méthodes

Closes #15

app/routers/router_favorites.py

@@ -2,24 +2,42 @@
 Favorites management routes for Ohm Stream Downloader API.
 """
 
-from fastapi import APIRouter, HTTPException
-from fastapi.requests import Request
+from typing import Optional
+from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response
+from fastapi.templating import Jinja2Templates
 
 from app.favorites import get_favorites_manager
+from app.models.auth import User
+from app.routers.router_auth import get_current_user_from_token, get_optional_user
 
 router = APIRouter(prefix="/api/favorites", tags=["favorites"])
+templates = Jinja2Templates(directory="templates")
 
 
 @router.get("")
 async def list_favorites(
+    request: Request,
     sort_by: str = "created_at",
     order: str = "desc",
-    filter_provider: str = None,
-    filter_genre: str = None,
+    filter_provider: Optional[str] = None,
+    filter_genre: Optional[str] = None,
+    html: bool = Query(False),
+    current_user: Optional[User] = Depends(get_optional_user),
 ):
     """List all favorite anime with optional sorting and filtering"""
+    is_htmx = request.headers.get("HX-Request")
+
+    if current_user is None and (html or is_htmx):
+        return templates.TemplateResponse(
+            "components/login_prompt.html", {"request": request}
+        )
+
+    if current_user is None:
+        raise HTTPException(status_code=401, detail="Authentication required")
+
     fav_manager = get_favorites_manager()
     favorites = await fav_manager.list_favorites(
+        user_id=current_user.id,
         sort_by=sort_by,
         order=order,
         filter_provider=filter_provider,
@@ -38,7 +56,11 @@ async def list_favorites(
 
 
 @router.post("")
-async def add_favorite(request: Request):
+async def add_favorite(
+    request: Request,
+    response: Response,
+    current_user: User = Depends(get_current_user_from_token),
+):
     """Add an anime to favorites"""
     data = await request.json()
 
@@ -51,6 +73,7 @@ async def add_favorite(request: Request):
 
     fav_manager = get_favorites_manager()
     favorite = await fav_manager.add_favorite(
+        user_id=current_user.id,
         anime_id=data["anime_id"],
         title=data["title"],
         url=data["url"],
@@ -59,34 +82,45 @@ async def add_favorite(request: Request):
         poster_url=data.get("poster_url"),
     )
 
+    response.headers["HX-Trigger"] = '{"show-toast": {"message": "' + favorite['title'] + ' ajouté aux favoris", "type": "success"}}'
     return {"status": "added", "favorite": favorite}
 
 
 @router.delete("/{anime_id}")
-async def remove_favorite(anime_id: str):
+async def remove_favorite(
+    anime_id: str,
+    response: Response,
+    current_user: User = Depends(get_current_user_from_token),
+):
     """Remove an anime from favorites"""
     fav_manager = get_favorites_manager()
-    removed = await fav_manager.remove_favorite(anime_id)
+    removed = await fav_manager.remove_favorite(anime_id, user_id=current_user.id)
 
     if not removed:
         raise HTTPException(status_code=404, detail="Favorite not found")
 
+    response.headers["HX-Trigger"] = '{"show-toast": {"message": "Favori supprimé", "type": "info"}}'
     return {"status": "removed", "anime_id": anime_id}
 
 
 @router.get("/stats")
-async def get_favorites_stats():
+async def get_favorites_stats(
+    current_user: User = Depends(get_current_user_from_token),
+):
     """Get statistics about favorites"""
     fav_manager = get_favorites_manager()
-    stats = await fav_manager.get_stats()
+    stats = await fav_manager.get_stats(user_id=current_user.id)
     return stats
 
 
 @router.get("/{anime_id}")
-async def get_favorite(anime_id: str):
+async def get_favorite(
+    anime_id: str,
+    current_user: User = Depends(get_current_user_from_token),
+):
     """Get details of a specific favorite anime"""
     fav_manager = get_favorites_manager()
-    favorite = await fav_manager.get_favorite(anime_id)
+    favorite = await fav_manager.get_favorite(anime_id, user_id=current_user.id)
 
     if not favorite:
         raise HTTPException(status_code=404, detail="Favorite not found")
@@ -95,7 +129,11 @@ async def get_favorite(anime_id: str):
 
 
 @router.post("/toggle")
-async def toggle_favorite(request: Request):
+async def toggle_favorite(
+    request: Request,
+    response: Response,
+    current_user: User = Depends(get_current_user_from_token),
+):
     """Toggle an anime in favorites"""
     data = await request.json()
 
@@ -108,6 +146,7 @@ async def toggle_favorite(request: Request):
 
     fav_manager = get_favorites_manager()
     result = await fav_manager.toggle_favorite(
+        user_id=current_user.id,
         anime_id=data["anime_id"],
         title=data["title"],
         url=data["url"],
@@ -116,4 +155,9 @@ async def toggle_favorite(request: Request):
         poster_url=data.get("poster_url"),
     )
 
+    action = result.get("action", "unknown")
+    message = f"'{data['title']}' {'ajouté aux' if action == 'added' else 'retiré des'} favoris"
+    toast_type = "success" if action == "added" else "info"
+
+    response.headers["HX-Trigger"] = f'{{"show-toast": {{"message": "{message}", "type": "{toast_type}"}}}}'
     return result