[Add] UI, menu, pause and timer

Assets/Minesweeper/Runtime/Presentation/Presenters/MainMenuPresenter.cs

@@ -1,4 +1,5 @@
 using Minesweeper.Commands;
+using Minesweeper.Core;
 using Minesweeper.Presentation.Views;
 
 namespace Minesweeper.Presentation.Presenters
@@ -6,11 +7,13 @@ namespace Minesweeper.Presentation.Presenters
     public sealed class MainMenuPresenter : IPresenter
     {
         private readonly IGameCommandDispatcher commandDispatcher;
+        private readonly IGameStateService gameStateService;
         private readonly IMainMenuView view;
 
-        public MainMenuPresenter(IGameCommandDispatcher commandDispatcher, IMainMenuView view = null)
+        public MainMenuPresenter(IGameCommandDispatcher commandDispatcher, IGameStateService gameStateService, IMainMenuView view = null)
         {
             this.commandDispatcher = commandDispatcher;
+            this.gameStateService = gameStateService;
             this.view = view;
         }
 
@@ -19,6 +22,8 @@ namespace Minesweeper.Presentation.Presenters
             if (view != null)
             {
                 view.StartClicked += OnStartClicked;
+                gameStateService.StateChanged += OnStateChanged;
+                OnStateChanged(gameStateService.Current);
             }
         }
 
@@ -27,6 +32,7 @@ namespace Minesweeper.Presentation.Presenters
             if (view != null)
             {
                 view.StartClicked -= OnStartClicked;
+                gameStateService.StateChanged -= OnStateChanged;
             }
         }
 
@@ -34,5 +40,17 @@ namespace Minesweeper.Presentation.Presenters
         {
             commandDispatcher.Dispatch(new StartGameCommand());
         }
+
+        private void OnStateChanged(GameState state)
+        {
+            if (state == GameState.FieldSelection)
+            {
+                view.Show();
+            }
+            else
+            {
+                view.Hide();
+            }
+        }
     }
 }