Refactor project structure: enhance tests, improve server shutdown, expand CI checks, and update UI for better event presentation.

pkg/diunwebhook/diunwebhook.go

@@ -32,17 +32,6 @@ var (
 	updates = make(map[string]DiunEvent)
 )
 
-// Exported for test package
-func GetUpdatesMap() map[string]DiunEvent {
-	return updates
-}
-
-func UpdatesReset() {
-	mu.Lock()
-	defer mu.Unlock()
-	updates = make(map[string]DiunEvent)
-}
-
 func UpdateEvent(event DiunEvent) {
 	mu.Lock()
 	defer mu.Unlock()
@@ -60,10 +49,21 @@ func GetUpdates() map[string]DiunEvent {
 }
 
 func WebhookHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
 	var event DiunEvent
 
 	if err := json.NewDecoder(r.Body).Decode(&event); err != nil {
-		http.Error(w, err.Error(), http.StatusBadRequest)
+		log.Printf("WebhookHandler: failed to decode request: %v", err)
+		http.Error(w, "bad request", http.StatusBadRequest)
+		return
+	}
+
+	if event.Image == "" {
+		http.Error(w, "bad request: image field is required", http.StatusBadRequest)
 		return
 	}