using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

using Unity.VisualScripting.YamlDotNet.Core.Tokens;

using UnityEngine;


namespace XericLibrary.Runtime.MacroLibrary
{
    /// <summary>
    /// 枚举宏，用于完成枚举项遍历，位操作等
    /// </summary>
    public class MacroEnum<T>
    where T: struct, Enum
	{
        /// <summary>
        /// 反射组值
        /// </summary>
        private Array valueArray;

        /// <summary>
        /// 反射组名称
        /// </summary>
        private string[] nameArray;

        /// <summary>
        /// 构建一个枚举辅助器
        /// </summary>
        public MacroEnum()
        {
			valueArray = typeof(T).GetEnumValues();
			nameArray = typeof(T).GetEnumNames();
		}


        /// <summary>
        /// 获取列表
        /// </summary>
        /// <returns></returns>
        public IEnumerable<T> GetValues() 
        {
            foreach(var type in valueArray)
                yield return (T)type;
        }

        /// <summary>
        /// 获取列表
        /// </summary>
        /// <returns></returns>
        public IEnumerable<string> GetNames() 
        {
            foreach(var type in nameArray)
                yield return type;
        }

        /// <summary>
        /// 获取枚举项目
        /// </summary>
        /// <returns></returns>
        public IEnumerable<(string, T)> GetEnums()
        {
            var output = nameArray
			.Zip(GetValues(), (name, value) => (name, value));
            return output;
		}


		/// <summary>
		/// 设置目标的枚举值
		/// </summary>
		/// <param name="target"></param>
		/// <param name="values"></param>
		public static void SetEnum(ref int target, params T[] values)
        {
            foreach(var value in values)
            {
                target |= Convert.ToInt32(value);
			}
        }

		/// <summary>
		/// 设置目标的枚举值
		/// </summary>
		/// <param name="target"></param>
		/// <param name="values"></param>
		public static void SetEnum(ref int target, T value)
        {
            target |= Convert.ToInt32(value);
        }

        /// <summary>
        /// 复位目标的枚举值
        /// </summary>
        /// <param name="target"></param>
        /// <param name="values"></param>
        public static void ResetEnum(ref int target, params T[] values)
        {
            int temp = 0;
            foreach(var value in values)
            {
				temp |= Convert.ToInt32(value);
			}
            target &= ~temp;
		}

        /// <summary>
        /// 复位目标的枚举值
        /// </summary>
        /// <param name="target"></param>
        /// <param name="values"></param>
        public static void ResetEnum(ref int target, T value)
        {
            target &= ~Convert.ToInt32(value);
		}

        /// <summary>
        /// 翻转目标的枚举值
        /// </summary>
        /// <param name="target"></param>
        /// <param name="values"></param>
        public static void FlipEnum(ref int target, params T[] values)
        {
            int temp = 0;
            foreach(var value in values)
            {
				temp |= Convert.ToInt32(value);
			}
			target ^= temp;
		}

        /// <summary>
        /// 翻转目标的枚举值
        /// </summary>
        /// <param name="target"></param>
        /// <param name="values"></param>
        public static void FlipEnum(ref int target, T value)
        {
			target ^= Convert.ToInt32(value);
		}
	}
}