using UnityEngine;
using System;
using Core;

namespace Script.Gameplay.Global
{
    /// <summary>
    /// 全局时间暂停管理器。
    /// 单例，挂载到场景里任意常驻 GameObject（如 Managers）。
    /// </summary>
    public class TimePauseManager : MonoSingleton<TimePauseManager>
    {

        /// <summary> 当前是否处于暂停状态 </summary>
        public bool IsPaused { get; private set; }

        /// <summary> 暂停/恢复时触发，参数 true=暂停，false=恢复 </summary>
        public event Action<bool> OnPauseStateChanged;

        [Header("调试按钮")]
        [SerializeField] private bool _pauseToggle;

        private void OnValidate()
        {
            // Inspector 里打钩立即生效（仅 Editor）
            if (Application.isPlaying && Instance == this)
                SetPaused(_pauseToggle);
        }
        

        /// <summary>
        /// 外部调用：设置暂停状态
        /// </summary>
        public void SetPaused(bool pause)
        {
            if (IsPaused == pause) return;

            IsPaused = pause;
            Time.timeScale = pause ? 0f : 1f;
            OnPauseStateChanged?.Invoke(pause);
        }

        /// <summary>
        /// 快捷暂停
        /// </summary>
        public static void Pause() => Instance.SetPaused(true);

        /// <summary>
        /// 快捷恢复
        /// </summary>
        public static void Resume() => Instance.SetPaused(false);
    }
}