namespace VberZero.Tools.StringModel;

public static class EnumHelper
{
    /// <summary>
    /// 根据枚举的名称获取枚举
    /// </summary>
    /// <typeparam name="TEnum">枚举类型</typeparam>
    /// <param name="str">字符串</param>
    /// <returns></returns>
    public static TEnum GetEnumByName<TEnum>(this string str) where TEnum : struct
    {
        if (Enum.TryParse<TEnum>(str, out var result))
        {
            return result;
        }
        return default;
    }

    /// <summary>
    /// 根据枚举获取枚举值
    /// </summary>
    /// <typeparam name="TEnum">枚举类型</typeparam>
    /// <param name="e">枚举</param>
    /// <returns></returns>
    public static int ToInt<TEnum>(this TEnum e) where TEnum : struct
    {
        return Convert.ToInt32(e);
    }

    /// <summary>
    /// 根据枚举获取枚举值
    /// </summary>
    /// <typeparam name="TEnum">枚举类型</typeparam>
    /// <param name="e">枚举</param>
    /// <returns>数字字符串</returns>
    public static string ToStr<TEnum>(this TEnum e) where TEnum : struct
    {
        return ToInt(e).ToString();
    }

    /// <summary>
    /// 根据枚举的值获取枚举名称
    /// </summary>
    /// <typeparam name="TEnum">枚举类型</typeparam>
    /// <param name="status">枚举的值</param>
    /// <returns></returns>
    public static string GetEnumName<TEnum>(this int status)
    {
        return Enum.GetName(typeof(TEnum), status);
    }

    /// <summary>
    /// 获取枚举名称集合
    /// </summary>
    /// <typeparam name="TEnum"></typeparam>
    /// <returns></returns>
    public static string[] GetNamesArr<TEnum>()
    {
        return Enum.GetNames(typeof(TEnum));
    }

    /// <summary>
    /// 将枚举转换成字典集合
    /// </summary>
    /// <typeparam name="TEnum">枚举类型</typeparam>
    /// <returns></returns>
    public static Dictionary<string, int> GetEnumDic<TEnum>()
    {
        Dictionary<string, int> resultList = new Dictionary<string, int>();
        Type type = typeof(TEnum);
        var strList = GetNamesArr<TEnum>().ToList();
        foreach (string key in strList)
        {
            string val = Enum.Format(type, Enum.Parse(type, key), "d");
            resultList.Add(key, int.Parse(val));
        }
        return resultList;
    }

    /// <summary>
    /// 将枚举转换成字典
    /// </summary>
    /// <typeparam name="TEnum"></typeparam>
    /// <returns></returns>
    public static Dictionary<string, int> GetDic<TEnum>()
    {
        Dictionary<string, int> dic = new Dictionary<string, int>();
        Type t = typeof(TEnum);
        var arr = Enum.GetValues(t);
        foreach (var item in arr)
        {
            dic.Add(item.ToString(), (int)item);
        }

        return dic;
    }
}