refactoring code

src/main/java/de/srsoftware/widerhall/web/Web.java

@@ -25,6 +25,7 @@ public class Web extends TemplateServlet {
     private static final String CONFIRM = "confirm";
     private static final Logger LOG = LoggerFactory.getLogger(Web.class);
     private static final String ADMIN = "admin";
+    private static final String INSPECT = "inspect";
     private static final String LOGIN = "login";
     private static final String LOGOUT = "logout";
     private static final String REGISTER = "register";
@@ -245,11 +246,15 @@ public class Web extends TemplateServlet {
     }
 
     private String handlePost(HttpServletRequest req, HttpServletResponse resp) {
-        var path = req.getPathInfo();
-        path = path == null ? INDEX : path.substring(1);
+        final var user = Util.getUser(req);
+        final var path = Util.getPath(req);
+        final var list = Util.getMailingList(req);
+
         switch (path){
             case ADD_LIST:
                 return addList(req,resp);
+            case INSPECT:
+                return inspect(req,resp);
             case LOGIN:
                 return handleLogin(req,resp);
             case REGISTER:
@@ -263,8 +268,21 @@ public class Web extends TemplateServlet {
         return t("No handler for path {}!",path);
     }
 
+    private String inspect(HttpServletRequest req, HttpServletResponse resp) {
+        var o = req.getSession().getAttribute(USER);
+        if (!(o instanceof User user)) {
+            return redirectTo(LOGIN,resp);
+        }
+        var post = req.getParameterMap();
+        var listEmail = req.getParameter(LIST);
+        var list = MailingList.load(listEmail);
+        if (list == null) return t("{} is does not denote a valid list",listEmail);
+        if (!list.mayBeAlteredBy(user)) {
 
-
+        }
+        LOG.debug("POST: {}",post);
+        return null;
+    }
 
 
     private String redirectTo(String page, HttpServletResponse resp) {