working on list submission

src/main/java/de/srsoftware/widerhall/data/MailingList.java

@@ -123,6 +123,10 @@ public class MailingList {
         return list;
     }
 
+    public static boolean isOpen(String list) {
+        return openLists().stream().filter(ml -> ml.email.equals(list)).count() > 0;
+    }
+
     public Map<String, Object> safeMap() {
         var map = new HashMap<String,Object>();
         String[] parts = email.split("@", 2);
@@ -163,4 +167,7 @@ public class MailingList {
         return this;
     }
 
+    public String email() {
+        return email;
+    }
 }

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

@@ -30,6 +30,7 @@ public class Web extends HttpServlet {
     private static final String LOGIN = "login";
     private static final String LOGOUT = "logout";
     private static final String REGISTER = "register";
+    private static final String SUBSCRIBE = "subscribe";
     private static final String RELOAD = "reload";
     private static final String IMAP_HOST = "imap_host";
     private static final String IMAP_PORT = "imap_port";
@@ -153,14 +154,22 @@ public class Web extends HttpServlet {
             case "css":
             case INDEX:
                 return loadTemplate(path,data,resp);
+            case SUBSCRIBE:
+                var list = req.getParameter(LIST);
+                // TODO check permission
+                if (MailingList.isOpen(list)) {
+                    data.put(LIST, list);
+                    return loadTemplate(path, data, resp);
+                }
+                return t("You are not allowed to subscribe to '{}'!",list);
             case "js":
                 resp.setContentType("text/javascript");
-                return loadTemplate(path,null,resp);
+                return loadTemplate(path,data,resp);
             case LOGIN:
                 try {
                     if (User.noUsers()) return loadTemplate(REGISTER, Map.of(NOTES,t("User database is empty. Create admin user first:")), resp);
                     return loadTemplate(path,null,resp);
-                } catch (SQLException throwables) {
+                } catch (SQLException e) {
                     return "Error reading user database!";
                 }
             case LOGOUT:
@@ -204,12 +213,14 @@ public class Web extends HttpServlet {
         var path = req.getPathInfo();
         path = path == null ? INDEX : path.substring(1);
         switch (path){
+            case ADD_LIST:
+                return addList(req,resp);
             case LOGIN:
                 return handleLogin(req,resp);
             case REGISTER:
                 return registerUser(req,resp);
-            case ADD_LIST:
-                return addList(req,resp);
+            case SUBSCRIBE:
+                return subscribe(req,resp);
         }
 
         return t("No handler for path {}!",path);
@@ -293,5 +304,25 @@ public class Web extends HttpServlet {
         }
     }
 
+    private String subscribe(HttpServletRequest req, HttpServletResponse resp) {
+        var name = req.getParameter(NAME);
+        var email = req.getParameter(EMAIL);
+        var pass = req.getParameter(PASSWORD);
+        var list = req.getParameter(LIST);
+        var data = new HashMap<String,String>();
+        data.put(NAME,name);
+        data.put(EMAIL,email);
+        data.put(PASSWORD,pass);
+        data.put(LIST,list);
+        if (list == null || list.isBlank()){
+            data.put(ERROR,"No list provided by form data!");
+            return loadTemplate(SUBSCRIBE,data,resp);
 
+        }
+        if (name == null || name.isBlank() || email == null || email.isBlank()){
+            data.put(ERROR,"Name and email are required fields for list subscription!");
+            return loadTemplate(SUBSCRIBE,data,resp);
+        }
+        return "not implemented";
+    }
 }