From a1909559b3592d9faea08ab44c1c0d3648298a1a Mon Sep 17 00:00:00 2001
From: mkelvers <mikkelelvers@outlook.com>
Date: Tue, 21 Apr 2026 01:20:39 +0200
Subject: [PATCH] fix: check render errors in playback and watchlist handlers

---
 api/playback/handler.go  |  5 ++++-
 api/watchlist/handler.go | 32 ++++++++++++++++++++++++++------
 2 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/api/playback/handler.go b/api/playback/handler.go
index 5560160..01452d1 100644
--- a/api/playback/handler.go
+++ b/api/playback/handler.go
@@ -115,7 +115,10 @@ func (h *Handler) HandleWatchPage(w http.ResponseWriter, r *http.Request) {
 		Segments:         convertSegments(data.Segments),
 	}
 
-	templates.WatchPage(anime, pageData).Render(r.Context(), w)
+	if err := templates.WatchPage(anime, pageData).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+	}
 }
 
 func watchlistUserIDFromRequest(r *http.Request) string {
diff --git a/api/watchlist/handler.go b/api/watchlist/handler.go
index 2b420d8..8ab6656 100644
--- a/api/watchlist/handler.go
+++ b/api/watchlist/handler.go
@@ -85,7 +85,11 @@ func (h *Handler) HandleUpdateWatchlist(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	watchlist.WatchlistDropdown(int(animeID), animeTitle, animeTitleEnglish, animeTitleJapanese, animeImage, status, airing).Render(r.Context(), w)
+	if err := watchlist.WatchlistDropdown(int(animeID), animeTitle, animeTitleEnglish, animeTitleJapanese, animeImage, status, airing).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
 }
 
 func (h *Handler) HandleCardWatchlist(w http.ResponseWriter, r *http.Request) {
@@ -139,7 +143,11 @@ func (h *Handler) HandleCardWatchlist(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	watchlist.CardButton(int(animeID), animeTitle, animeTitleEnglish, animeTitleJapanese, animeImage, airing, true).Render(r.Context(), w)
+	if err := watchlist.CardButton(int(animeID), animeTitle, animeTitleEnglish, animeTitleJapanese, animeImage, airing, true).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
 }
 
 func (h *Handler) HandleDeleteWatchlist(w http.ResponseWriter, r *http.Request) {
@@ -185,11 +193,17 @@ func (h *Handler) HandleDeleteWatchlist(w http.ResponseWriter, r *http.Request)
 	}
 
 	if from == "card" {
-		watchlist.CardButton(int(animeID), anime.TitleOriginal, title, "", anime.ImageUrl, airing, false).Render(r.Context(), w)
+		if err := watchlist.CardButton(int(animeID), anime.TitleOriginal, title, "", anime.ImageUrl, airing, false).Render(r.Context(), w); err != nil {
+			log.Printf("render error: %v", err)
+			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		}
 		return
 	}
 
-	watchlist.WatchlistDropdown(int(animeID), anime.TitleOriginal, title, "", anime.ImageUrl, "", airing).Render(r.Context(), w)
+	if err := watchlist.WatchlistDropdown(int(animeID), anime.TitleOriginal, title, "", anime.ImageUrl, "", airing).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+	}
 }
 
 func (h *Handler) HandleGetWatchlist(w http.ResponseWriter, r *http.Request) {
@@ -241,7 +255,10 @@ func (h *Handler) HandleGetWatchlist(w http.ResponseWriter, r *http.Request) {
 	// Sort entries
 	h.sortEntries(filteredEntries, sortBy, sortOrder)
 
-	templates.Watchlist(filteredEntries, layout, statusFilter, sortBy, sortOrder).Render(r.Context(), w)
+	if err := templates.Watchlist(filteredEntries, layout, statusFilter, sortBy, sortOrder).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+	}
 }
 
 func (h *Handler) HandleContinueWatching(w http.ResponseWriter, r *http.Request) {
@@ -262,7 +279,10 @@ func (h *Handler) HandleContinueWatching(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	templates.ContinueWatching(entries).Render(r.Context(), w)
+	if err := templates.ContinueWatching(entries).Render(r.Context(), w); err != nil {
+		log.Printf("render error: %v", err)
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+	}
 }
 
 func (h *Handler) HandleDeleteContinueWatching(w http.ResponseWriter, r *http.Request) {