using Loom;
using UnityEngine;
using UnityEngine.InputSystem;

public sealed class PauseMenuController : MonoBehaviour
{
    private UIBridge _bridge;
    private InputActionMap _gameplay;
    private float _resumeTimeScale;
    private bool _paused;

    private void Start()
    {
        _bridge = UIBridge.Instance;
        _gameplay = new InputActionMap("Gameplay");

        var pause = _gameplay.AddAction("Pause", InputActionType.Button);
        pause.AddBinding("<Keyboard>/escape");
        pause.AddBinding("<Gamepad>/start");
        pause.performed += _ => _bridge.Pause();

        var score = _gameplay.AddAction("Score", InputActionType.Button);
        score.AddBinding("<Keyboard>/space");
        score.AddBinding("<Gamepad>/buttonSouth");
        score.performed += _ => _bridge.Score += 1;

        EnableGameplay();
    }

    private void OnEnable()
    {
        // OnEnable also runs before Start has created the action map.
        if (_gameplay != null) EnableGameplay();
    }

    private void EnableGameplay()
    {
        _bridge.SetPauseHandler(SetPaused);
        _bridge.Resume();
    }

    private void SetPaused(bool paused)
    {
        if (paused)
        {
            if (!_paused) _resumeTimeScale = Time.timeScale;
            _gameplay.Disable();
            Time.timeScale = 0;
            LoomRuntime.KeyboardMode = LoomKeyboardMode.Navigation;
        }
        else
        {
            if (_paused) Time.timeScale = _resumeTimeScale;
            LoomRuntime.KeyboardMode = LoomKeyboardMode.Gameplay;
            _gameplay.Enable();
        }

        _paused = paused;
    }

    private void OnDisable()
    {
        if (_gameplay == null) return;
        _bridge.Resume();
        _bridge.SetPauseHandler(null);
        _gameplay.Disable();
    }

    private void OnDestroy() => _gameplay?.Dispose();
}