using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

namespace AdonFramework
{
    /// <summary>
    /// 事件中心
    /// </summary>
    public class EventCenter : BaseManager<EventCenter>
    {
        /// <summary>
        /// 事件字典，存储注册事件
        /// </summary>
        private Dictionary<string, IEventInfo> EventDic = new Dictionary<string, IEventInfo>();
        /// <summary>
        /// 有参数注册事件
        /// </summary>
        /// <typeparam name="T">参数类型</typeparam>
        /// <param name="name"></param>
        /// <param name="action"></param>
        public void AddEventListener<T>(string name, UnityAction<T> action)
        {
            if (EventDic.ContainsKey(name))
            {
                (EventDic[name] as EventInfo<T>).action += action;
            }
            else
            {
                EventDic.Add(name, new EventInfo<T>(action));
            }
        }
        /// <summary>
        /// 注册事件
        /// </summary>
        /// <param name="name">事件名</param>
        /// <param name="action">事件执行函数</param>
        public void AddEventListener(string name, UnityAction action)
        {
            if (EventDic.ContainsKey(name))
            {
                (EventDic[name] as EventInfo).action += action;
            }
            else
            {
                EventDic.Add(name, new EventInfo(action));
            }
        }
        /// <summary>
        /// 移除监听事件
        /// 当注册对象销毁事调用（OnDestroy）
        /// </summary>
        /// <param name="name">事件名</param>
        /// <param name="action">对应的事件函数</param>
        public void RemoveEventListener<T>(string name,UnityAction<T> action)
        {
            if (EventDic.ContainsKey(name))
                (EventDic[name] as EventInfo<T>).action -= action;
        }
        /// <summary>
        /// 移除监听事件
        /// 当注册对象销毁事调用（OnDestroy）
        /// </summary>
        /// <param name="name">事件名</param>
        /// <param name="action">对应的事件函数</param>
        public void RemoveEventListener(string name, UnityAction action)
        {
            if (EventDic.ContainsKey(name))
                (EventDic[name] as EventInfo).action -= action;
        }
        /// <summary>
        /// 触发参数
        /// </summary>
        /// <param name="name">事件名</param>
        /// <param name="info">事件参数</param>
        public void EventTrigger<T>(string name , T info)
        {
            if (EventDic.ContainsKey(name))
            {
                if((EventDic[name] as EventInfo<T>).action != null)
                    (EventDic[name] as EventInfo<T>).action.Invoke(info);
            }
        }
        /// <summary>
        /// 触发参数
        /// </summary>
        /// <param name="name">事件名</param>
        /// <param name="info">事件参数</param>
        public void EventTrigger(string name)
        {
            if (EventDic.ContainsKey(name))
            {
                if ((EventDic[name] as EventInfo).action != null)
                    (EventDic[name] as EventInfo).action.Invoke();
            }
        }
        /// <summary>
        /// 清空
        /// 场景切换时调用
        /// </summary>
        public void Clear()
        {
            EventDic.Clear();
        }
    }

    /// <summary>
    /// 事件信息接口，解决传递参数装箱拆箱对性能损耗
    /// </summary>
    public interface IEventInfo
    {
    }
    /// <summary>
    /// 有参数事件信息类
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class EventInfo<T>:IEventInfo
    {
        public EventInfo(UnityAction<T> _action)
        {
            action += _action;
        }
        public UnityAction<T> action;
    }
    /// <summary>
    /// 无参数事件信息类
    /// </summary>
    public class EventInfo : IEventInfo
    {
        public EventInfo(UnityAction _action)
        {
            action += _action;
        }
        public UnityAction action;
    }
}