using System;
using System.Collections.Generic;

namespace ZC
{
    public class UIHideOrShowEventArgs : GameEventArgs
    {
        public static readonly int EventId = typeof(UIHideOrShowEventArgs).GetHashCode();
        public override int Id => EventId;
        public UIType UIType;

        public UIHideOrShowEventArgs(UIType uiType)
        {
            UIType = uiType;
        }
    }

    public static class GameEventPool
    {
        private static Dictionary<string, List<GameEventArgs>> pool = new Dictionary<string, List<GameEventArgs>>();
        private static Dictionary<string, List<GameEventArgs>> cache = new Dictionary<string, List<GameEventArgs>>();

        public static T TakeOut<T>() where T : GameEventArgs, new()
        {
            string name = nameof(T);
            T args;
            if (pool.TryGetValue(name, out var list) && list.Count > 0)
            {
                args = (T)list[0];
                list.RemoveAt(0);
            }
            else
            {
                args = new T();
            }

            AddCache(name, args);
            return args;
        }

        public static void Put<T>(T args) where T : GameEventArgs
        {
            string name = nameof(T);
            if (cache.TryGetValue(name, out var list))
            {
                list.Remove(args);
                AddPool(name, args);
            }
            else
            {
                throw new NullReferenceException();
            }
        }

        static void AddCache(string name, GameEventArgs args)
        {
            if (cache.TryGetValue(name, out var list)) list.Add(args);
            else cache.Add(name, new List<GameEventArgs>() { args });
        }

        static void AddPool(string name, GameEventArgs args)
        {
            if (pool.TryGetValue(name, out var list)) list.Add(args);
            else pool.Add(name, new List<GameEventArgs>() { args });
        }
    }
}