Add admin button for cancelling votes

AdminVirtualMachine.hpp

@@ -90,6 +90,14 @@ struct AdminVirtualMachine
       });
   }
 
+  void CancelVote()
+  {
+    state_.dispatch([](auto& state)
+      {
+        state.StopVote();
+      });
+  }
+
   void OnGuacamoleInstructions(
       std::shared_ptr<std::vector<std::shared_ptr<SharedSocketMessage>>> instructions) {
     state_.dispatch([instructions = std::move(instructions)](auto& state) mutable {
@@ -538,6 +546,9 @@ struct AdminVirtualMachine
 
     void OnVoteEnd(bool vote_passed)
     {
+      if (!active_ || !GetVotesEnabled()) {
+        return;
+      }
       if (vote_passed) {
         admin_vm_.Restart();
       }
@@ -557,7 +568,7 @@ struct AdminVirtualMachine
 
     void OnVoteIdle()
     {
-      if (GetVotesEnabled()) {
+      if (active_ && GetVotesEnabled()) {
         VmUserChannel::BroadcastMessage(GetVoteStatus());
       }
     }

CollabVmServer.hpp

@@ -1470,6 +1470,23 @@ namespace CollabVm::Server
           }
           break;
         }
+        case CollabVmClientMessage::Message::CANCEL_VOTE:
+        {
+          if (is_admin_ && connected_vm_id_)
+          {
+            server_.virtual_machines_.dispatch(
+              [vm_id = connected_vm_id_](auto& virtual_machines)
+              {
+                if (const auto virtual_machine =
+                      virtual_machines.GetAdminVirtualMachine(vm_id);
+                    virtual_machine)
+                {
+                  virtual_machine->CancelVote();
+                }
+              });
+          }
+          break;
+        }
         case CollabVmClientMessage::Message::RECORDING_PREVIEW_REQUEST:
         {
           if (is_admin_)

VoteController.hpp

@@ -91,6 +91,8 @@ class VoteController {
         {
           if (ec || !static_cast<TBase&>(*this).GetVotesEnabled()) {
             vote_state_ = VoteState::kIdle;
+            static_cast<TBase&>(*this).OnVoteIdle();
+            static_cast<TBase&>(*this).OnVoteEnd(false);
             return;
           }