@using Sandbox.UI;
@using Sandbox.UI.Navigation;
@using Sandbox;
@namespace Sandbox
@inherits Panel

<root class="navbar">

	<div class="group left">
		@if ( ShowBack )
		{
			<div id="BackToMenu" class="button" onclick=@GoBack>
				<img src="/ui/back_to_main_menu.png" />
				<span>Back to Main Menu</span>
			</div>
		}
	</div>

	<div class="group center">
		@if ( ShowBackToGame )
		{
			<div class="button bigicon" onclick=@BackToGame>
				<img src="/ui/back_to_game.png" />
				<span>Back to Game</span>
			</div>
		}
	</div>

	<div class="group right">
	</div>

</root>

@code
{
	[Parameter] public MainMenuHost Host { get; set; }

	bool ShowBackToGame => Host?.IsInGameMenu ?? false;
	bool ShowBack => this.GetNavigator()?.CurrentUrl != "/";

	string _lastUrl;
	bool _lastShowBackToGame;

	public override void Tick()
	{
		var url = this.GetNavigator()?.CurrentUrl;
		var showBackToGame = ShowBackToGame;
		if ( url != _lastUrl || showBackToGame != _lastShowBackToGame )
		{
			_lastUrl = url;
			_lastShowBackToGame = showBackToGame;
			StateHasChanged();
		}
	}

	void GoBack()
	{
		this.GetNavigator()?.Navigate( "/" );
	}

	void BackToGame()
	{
		Host?.ResumeGame();
	}
}