using System;
using Loom;

public enum GameScreen
{
    Hud,
    Pause
}

[Bridge]
public partial class UIBridge : LoomBridgeBase
{
    public GameScreen CurrentScreen { get; set; } = GameScreen.Hud;
    public int Score { get; set; }

    private Action<bool> _setPaused;

    // Called by the scene component, not exposed to the UI.
    public void SetPauseHandler(Action<bool> handler) => _setPaused = handler;

    [BridgeAction]
    public void Pause() => ChangePause(true);

    [BridgeAction]
    public void Resume() => ChangePause(false);

    [BridgeAction]
    public void ResetScore() => Score = 0;

    private void ChangePause(bool paused)
    {
        if (_setPaused == null)
            throw new InvalidOperationException("PauseMenuController is not active.");

        _setPaused(paused);
        CurrentScreen = paused ? GameScreen.Pause : GameScreen.Hud;
    }
}