namespace LMS.Tools.Extensions
{
    public class ConvertExtension
    {
        /// <summary>
        ///   将字符串转换为long，默认或者是转换错误返回0
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static long ObjectToLong(object obj)
        {
            if (obj == null)
                return 0;

            if (obj is long longValue)
                return longValue;

            if (obj is int intValue)
                return intValue;

            if (obj is string strValue)
            {
                if (long.TryParse(strValue, out long result))
                    return result;
            }

            // 处理其他数值类型
            if (obj is IConvertible convertible)
            {
                try
                {
                    return convertible.ToInt64(System.Globalization.CultureInfo.InvariantCulture);
                }
                catch
                {
                    // 转换失败，返回0
                    return 0;
                }
            }

            return 0; // 默认返回0
        }
    }
}