Disable proxy button when proxy is added

proxies/client/proxies.html

@@ -6,11 +6,15 @@
       </div>
       <div class="col-md-6">
         <h2>
-          <button class="btn btn-default btn-sm pull-right" id="add-proxy">{{ _ "proxies_addProxy" }}</button>
+          {{ # unless hideAddProxyButton }}
+            <button class="btn btn-default btn-sm pull-right" id="add-proxy">
+              {{ _ "proxies_addProxy" }}
+            </button>
+          {{ / unless }}
           {{ _ "proxies_pageHeader" }}
         </h2>
         <hr>
-        <div class="">
+        <div>
           {{# if Template.subscriptionsReady }}
             {{ # if proxies }}
               {{ # each proxy in proxies }}

proxies/client/proxies.js

@@ -24,4 +24,10 @@ Template.proxies.helpers({
 
     return proxies;
   },
+  hideAddProxyButton () {
+    const proxiesCount = Proxies.find().count();
+
+    // Set button disabled if at least one proxy is already added
+    return proxiesCount >= 1;
+  },
 });

proxies/collection/permissions.js

@@ -1,7 +1,13 @@
 import { Proxies } from './';
+import { Roles } from 'meteor/alanning:roles';
 
 Proxies.allow({
   insert (userId, proxy) {
+    // Check if proxy is already exist
+    if (Proxies.find().count() >= 1) {
+      return false;
+    }
+
     // Check if user has admin role
     return Roles.userIsInRole(userId, ['admin']);
   },