//-----------------------------------------------------------------------------
// MainMenuScreen.cs
//
// Microsoft XNA Community Game Platform
// Copyright (C) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Net;


namespace NetworkStateManagement
{
	/// <summary>
	/// The main menu screen is the first thing displayed when the game starts up.
	/// </summary>
	class MainMenuScreen : MenuScreen
	{


		/// <summary>
		/// Constructor fills in the menu contents.
		/// </summary>
		public MainMenuScreen()
		: base(Resources.MainMenu)
		{
			// Create our menu entries.
			MenuEntry singlePlayerMenuEntry = new MenuEntry(Resources.SinglePlayer);
			// TODO MenuEntry liveMenuEntry = new MenuEntry(Resources.PlayerMatch);
			MenuEntry systemLinkMenuEntry = new MenuEntry(Resources.SystemLink);
			MenuEntry exitMenuEntry = new MenuEntry(Resources.Exit);

			// Hook up menu event handlers.
			singlePlayerMenuEntry.Selected += SinglePlayerMenuEntrySelected;
			// TODO liveMenuEntry.Selected += LiveMenuEntrySelected;
			systemLinkMenuEntry.Selected += SystemLinkMenuEntrySelected;
			exitMenuEntry.Selected += OnCancel;

			// Add entries to the menu.
			// TODO MenuEntries.Add(liveMenuEntry);
			MenuEntries.Add(systemLinkMenuEntry);
			MenuEntries.Add(singlePlayerMenuEntry);
			MenuEntries.Add(exitMenuEntry);
		}





		/// <summary>
		/// Event handler for when the Single Player menu entry is selected.
		/// </summary>
		void SinglePlayerMenuEntrySelected(object sender, PlayerIndexEventArgs e)
		{
			LoadingScreen.Load(ScreenManager, true, e.PlayerIndex,
				new GameplayScreen(null));
		}


		/// <summary>
		/// Event handler for when the Live menu entry is selected.
		/// </summary>
		void LiveMenuEntrySelected(object sender, PlayerIndexEventArgs e)
		{
			CreateOrFindSession(NetworkSessionType.PlayerMatch, e.PlayerIndex);
		}


		/// <summary>
		/// Event handler for when the System Link menu entry is selected.
		/// </summary>
		void SystemLinkMenuEntrySelected(object sender, PlayerIndexEventArgs e)
		{
			CreateOrFindSession(NetworkSessionType.SystemLink, e.PlayerIndex);
		}


		/// <summary>
		/// Helper method shared by the Live and System Link menu event handlers.
		/// </summary>
		void CreateOrFindSession(NetworkSessionType sessionType,
				PlayerIndex playerIndex)
		{
			// First, we need to make sure a suitable gamer profile is signed in.
			ProfileSignInScreen profileSignIn = new ProfileSignInScreen(sessionType);

			// Hook up an event so once the ProfileSignInScreen is happy,
			// it will activate the CreateOrFindSessionScreen.
			profileSignIn.ProfileSignedIn += delegate
		{
			GameScreen createOrFind = new CreateOrFindSessionScreen(sessionType);

			ScreenManager.AddScreen(createOrFind, playerIndex);
		};

			// Activate the ProfileSignInScreen.
			ScreenManager.AddScreen(profileSignIn, playerIndex);
		}


		/// <summary>
		/// When the user cancels the main menu, ask if they want to exit the sample.
		/// </summary>
		protected override void OnCancel(PlayerIndex playerIndex)
		{
			MessageBoxScreen confirmExitMessageBox =
				new MessageBoxScreen(Resources.ConfirmExitSample);

			confirmExitMessageBox.Accepted += ConfirmExitMessageBoxAccepted;

			ScreenManager.AddScreen(confirmExitMessageBox, playerIndex);
		}


		/// <summary>
		/// Event handler for when the user selects ok on the "are you sure
		/// you want to exit" message box.
		/// </summary>
		void ConfirmExitMessageBoxAccepted(object sender, PlayerIndexEventArgs e)
		{
			ScreenManager.Game.Exit();
		}


	}
}