Fix(chat-id): Handling unregistered chat ID

backend/internal/telegrampackage/telegram.go

@@ -104,6 +104,15 @@ func (env *Env) TelegramListenAndGen() error {
 					fmt.Println(err)
 				}
 
+				if chatIDMap.ChatIDShort == "" {
+					msg := tgbotapi.NewMessage(update.Message.Chat.ID, "Please send /register to register for a chat ID")
+					_, err := bot.Send(msg)
+					if err != nil {
+						log.Println(err)
+					}
+					continue
+				}
+
 				var handled = false
 				for _, currFunc := range env.HandlerFunctions {
 					currHandled, responseText := currFunc(chatIDMap.ChatIDShort, update.Message.Text)