Refactor authentication handling to use WebSocket URLs instead of Service URLs for improved connection management. Introduce WebSocketURL method in the Server struct to dynamically generate WebSocket URLs based on request headers. Clean up whitespace in handle-auth.go for better code readability.

app/handle-auth.go

@@ -25,7 +25,7 @@ func (l *Listener) HandleAuth(b []byte) (err error) {
 	var valid bool
 	if valid, err = auth.Validate(
 		env.Event, l.challenge.Load(),
-		l.ServiceURL(l.req),
+		l.WebSocketURL(l.req),
 	); err != nil {
 		e := err.Error()
 		if err = Ok.Error(l, env, e); chk.E(err) {
@@ -50,7 +50,7 @@ func (l *Listener) HandleAuth(b []byte) (err error) {
 			env.Event.Pubkey,
 		)
 		l.authedPubkey.Store(env.Event.Pubkey)
-		
+
 		// Check if this is a first-time user and create welcome note
 		go l.handleFirstTimeUser(env.Event.Pubkey)
 	}
@@ -65,17 +65,17 @@ func (l *Listener) handleFirstTimeUser(pubkey []byte) {
 		log.E.F("failed to check first-time user status: %v", err)
 		return
 	}
-	
+
 	if !isFirstTime {
 		return // Not a first-time user
 	}
-	
+
 	// Get payment processor to create welcome note
 	if l.Server.paymentProcessor != nil {
 		// Set the dashboard URL based on the current HTTP request
 		dashboardURL := l.Server.DashboardURL(l.req)
 		l.Server.paymentProcessor.SetDashboardURL(dashboardURL)
-		
+
 		if err := l.Server.paymentProcessor.CreateWelcomeNote(pubkey); err != nil {
 			log.E.F("failed to create welcome note for first-time user: %v", err)
 		}