@namespace sGBA

@inherits PanelComponent

<root class="@(IsVisible ? "visible" : "")">
	<div class="modal-backdrop" onclick=@Hide />

	<div class="add-games-modal">
		<div class="add-games-rule top" />
		<div class="add-games-rule bottom" />

		<div class="add-games-title">#addgames.title</div>
		<div class="add-games-subtitle">#addgames.sub</div>

		<div class="preview-frame">
			<image src="/ui/add-roms.png" class="preview-image" />
		</div>

		<div class="dialog-actions">
			<div class="action-btn @ActionButtonClass" onclick=@Hide>
				<SelectionRing Active=@IsActionFocused StrokeWidth=@(8f) CornerRadius=@(43f) Gap=@(0f) FlatTop=@true Alpha=@_ringAlpha class="action-btn-ring" />
				<div class="action-btn-fill" />
				<div class="action-btn-label">#addgames.dismiss</div>
			</div>
		</div>

	</div>
</root>

@code
{
	public static AddGamesModal Current { get; private set; }

	public bool IsVisible { get; private set; }

	private readonly FocusInput _input = new();
	private bool _openedThisFrame;
	private float _ringAlpha;
	private bool IsActionFocused => _input.UseGamepad;
	private string ActionButtonClass => IsActionFocused ? "focus" : "";

	protected override void OnTreeFirstBuilt()
	{
		Current = this;
	}

	public void Open(bool useGamepad = false)
	{
		IsVisible = true;
		_openedThisFrame = true;
		_ringAlpha = 0f;
		_input.Begin(useGamepad);
		Sound.Play("ui.popup.message.open");
		StateHasChanged();
	}

	public void Hide()
	{
		bool wasGamepad = _input.UseGamepad;
		IsVisible = false;
		_ringAlpha = 0f;
		_input.End();
		HomeScreen.Current?.OnAddGamesModalClosed(wasGamepad);
		Sound.Play("ui.popup.message.close");
		StateHasChanged();
	}

	protected override void OnUpdate()
	{
		if (!IsVisible)
			return;
		if (new Game.Overlay().IsOpen)
			return;

		float nextRingAlpha = MathF.Min(1f, _ringAlpha + Time.Delta / 0.16f);
		if (MathF.Abs(nextRingAlpha - _ringAlpha) > 0.001f)
		{
			_ringAlpha = nextRingAlpha;
			StateHasChanged();
		}

		var wasGamepad = _input.UseGamepad;
		_input.Tick();
		if (wasGamepad != _input.UseGamepad)
			StateHasChanged();

		if (_openedThisFrame)
		{
			_openedThisFrame = false;
			return;
		}

		if (Input.Pressed("GBA_A") || Input.Pressed("GBA_B"))
		{
			_input.ForceGamepadMode();
			Hide();
		}
	}

	protected override int BuildHash()
	{
		return HashCode.Combine(IsVisible, _input.UseGamepad, _ringAlpha);
	}

	protected override void OnDestroy()
	{
		if (Current == this)
			Current = null;
	}
}