using System.Collections;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class TitleManager : MonoBehaviour
{
    [Header("VR入力設定")]
    [Tooltip("スタート用の右手トリガー入力（例: XRI RightHand Interaction/Activate など）")]
    [SerializeField] private InputActionProperty rightTriggerAction;
    [Tooltip("スタート用の左手トリガー入力（任意）")]
    [SerializeField] private InputActionProperty leftTriggerAction;

    [Header("UI Buttons（任意）")]
    [SerializeField] private Button startButton;
    [SerializeField] private Button exitButton;

    [Header("Scene Settings")]
    [SerializeField] private string mainGameSceneName = "MainGameScene";

    private bool isStarting = false;

    private void Awake()
    {
        if (startButton != null) startButton.onClick.AddListener(StartGame);
        if (exitButton != null) exitButton.onClick.AddListener(OnExitButtonClicked);
    }

    private void OnEnable()
    {
        EnableAction(rightTriggerAction);
        EnableAction(leftTriggerAction);
    }

    private void OnDisable()
    {
        DisableAction(rightTriggerAction);
        DisableAction(leftTriggerAction);
    }

    private void EnableAction(InputActionProperty prop)
    {
        if (prop.action != null) prop.action.Enable();
    }

    private void DisableAction(InputActionProperty prop)
    {
        if (prop.action != null) prop.action.Disable();
    }

    private void Update()
    {
        if (isStarting) return;

        // トリガー入力の判定（右手または左手）
        if (IsTriggerPressed(rightTriggerAction) || IsTriggerPressed(leftTriggerAction))
        {
            StartGame();
        }
    }

    private bool IsTriggerPressed(InputActionProperty prop)
    {
        if (prop.action == null) return false;
        return prop.action.triggered || prop.action.ReadValue<float>() > 0.5f;
    }

    public void StartGame()
    {
        if (isStarting) return;
        isStarting = true;

        if (startButton != null) startButton.interactable = false;
        Debug.Log("🚀 トリガー入力を検知：メインゲームシーンを読み込みます。");
        StartCoroutine(LoadSceneRoutine());
    }

    public void OnExitButtonClicked()
    {
#if UNITY_EDITOR
        UnityEditor.EditorApplication.isPlaying = false;
#else
        Application.Quit();
#endif
    }

    private IEnumerator LoadSceneRoutine()
    {
        AsyncOperation asyncLoad = SceneManager.LoadSceneAsync(mainGameSceneName);
        while (!asyncLoad.isDone)
        {
            yield return null;
        }
    }
}