using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace NCC.Code
{
    public static class ConvertExtension
    {
        public static string M5_ToString(this object value)
        {
            return value == null ? string.Empty : value.ToString().Trim();
        }
        public static bool IsNull(this object obj)
        {
            return obj == null;
        }
     
        public static bool IsNotNullAndHasCount(this List<object> obj)
        {
            try
            {
                if (obj != null && obj.Count > 0) return true;

            }
            catch
            { }
            return false;
        }
        public static bool IsNotNullAndHasCount(this List<int> obj)
        {
            try
            {
                if (obj != null && obj.Count > 0) return true;

            }
            catch
            { }
            return false;
        }
        /// <summary>
        /// 判断是否有交集
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="list1"></param>
        /// <param name="list2"></param>
        /// <returns></returns>
        public static bool IsArrayIntersection<T>(this List<T> list1, List<T> list2)
        {
            List<T> t = list1.Distinct().ToList();

            var exceptArr = t.Except(list2).ToList();

            if (exceptArr.Count < t.Count)
            {
                return true;
            }
            else
            {
                return false;
            }

        }
        public static bool IsNotNullAndHasCount(this List<string> obj)
        {
            try
            {
                if (obj != null && obj.Count > 0) return true;

            }
            catch
            { }
            return false;
        }
        public static Guid Parse(this string guid)
        {
            var gid = new Guid(guid);
            return gid;
        }
        /// <summary>
        /// 时间转换
        /// </summary>
        /// <param name="timeStr"></param>
        /// <returns></returns>
        public static DateTime ConvertDateTime(this string timeStr)
        {
            if (string.IsNullOrWhiteSpace(timeStr))
            {
                return new DateTime(1990, 1, 1);
            }
            DateTime dt;
            DateTime.TryParse(timeStr, out dt);
            return dt;
        }

        public static int ParseInt(this string str)
        {
            if (string.IsNullOrWhiteSpace(str))
            {
                return 0;
            }
            int a;
            int.TryParse(str, out a);
            return a;
        }
        public static int M5_ParseInt(this object str)
        {
            if (str == null)
            {
                return 0;
            }
            int a;
            int.TryParse(str.ToString(), out a);
            return a;
        }

        public static decimal M5_ParseDecimal(this object str)
        {
            if (str == null)
            {
                return 0;
            }
            decimal a;
            decimal.TryParse(str.ToString(), out a);
            return a;
        }
        /// <summary>
        /// 保留几位小数
        /// </summary>
        /// <param name="str"></param>
        /// <param name="len">默认俩ing为</param>
        /// <returns></returns>
        public static decimal MathDecimal(this decimal str, int len = 2)
        {
            try
            {
                return Math.Round(str, len);
            }
            catch (Exception)
            {
                return str;
            }
        }
        /// <summary>
        /// 实现数据的四舍五入法
        /// </summary>
        /// <param name="v">要进行处理的数据</param>
        /// <param name="x">保留的小数位数</param>
        /// <returns>四舍五入后的结果</returns>
        public static decimal Round(this decimal v, int x = 0)
        {
            var isNegative = false;
            //如果是负数
            if (v < 0)
            {
                isNegative = true;
                v = -v;
            }

            var IValue = 1;
            for (var i = 1; i <= x; i++)
            {
                IValue = IValue * 10;
            }

            var Int = Math.Round(v * IValue, 0);
            v = Int / IValue;

            if (isNegative)
            {
                v = -v;
            }

            return v;
        }

        /// <summary>
        /// 实现数据的向上取整
        /// </summary>
        /// <param name="v">要进行处理的数据</param>
        /// <param name="x">保留的小数位数</param>
        /// <returns>向上取整后的结果</returns>
        public static decimal Ceiling(this decimal v, int x = 0)
        {
            var isNegative = false;
            //如果是负数
            if (v < 0)
            {
                isNegative = true;
                v = -v;
            }

            var IValue = 1;
            for (var i = 1; i <= x; i++)
            {
                IValue = IValue * 10;
            }

            var Int = Math.Ceiling(v * IValue);
            v = Int / IValue;

            if (isNegative)
            {
                v = -v;
            }

            return v;
        }

        /// <summary>
        /// 实现数据的向下取整
        /// </summary>
        /// <param name="v">要进行处理的数据</param>
        /// <param name="x">保留的小数位数</param>
        /// <returns>向下取整后的结果</returns>
        public static decimal Floor(this decimal v, int x = 0)
        {
            var isNegative = false;
            //如果是负数
            if (v < 0)
            {
                isNegative = true;
                v = -v;
            }

            var IValue = 1;
            for (var i = 1; i <= x; i++)
            {
                IValue = IValue * 10;
            }

            var Int = Math.Floor(v * IValue);
            v = Int / IValue;

            if (isNegative)
            {
                v = -v;
            }

            return v;
        }

        /// <summary>
        /// 实现见角进元
        /// </summary>
        /// <param name="v">要进行处理的数据</param>
        /// <param name="x">保留的小数位数</param>
        /// <returns>见角进元后的结果</returns>
        public static decimal SeeDownUp(this decimal v, int x = 0)
        {
            var isNegative = false;
            //如果是负数
            if (v < 0)
            {
                isNegative = true;
                v = -v;
            }

            var IValue = 1;
            for (var i = 1; i <= x; i++)
            {
                IValue = IValue * 10;
            }

            var stirngpanduan = Math.Floor(v * IValue * 10).ToString();
            if (stirngpanduan.Substring(stirngpanduan.Length - 1) == "0")
            {
                var Int = Math.Floor(v * IValue);
                v = Int / IValue;
            }
            else
            {
                var Int = Math.Ceiling(v * IValue);
                v = Int / IValue;
            }

            if (isNegative)
            {
                v = -v;
            }

            return v;
        }

        /// <summary>
        /// 实现数据的四舍五入，向上取整，向下取整
        /// </summary>
        /// <param name="v">要进行处理的数据</param>
        /// <param name="x">保留的小数位数</param>
        /// <param name="type">1四舍五入，2向上取整，3向下取整</param>
        /// <returns>decimal</returns>
        public static decimal DecimalProcessing(this decimal v, int x, string type)
        {
            decimal result = 0;
            switch (type)
            {
                case "1":
                    result = Round(v, x);
                    break;
                case "2":
                    result = Ceiling(v, x);
                    break;
                case "3":
                    result = Floor(v, x);
                    break;
                case "4":
                    result = SeeDownUp(v, x);
                    break;
                default:
                    result = Round(v, x);
                    break;
            }

            return result;
        }

        /// <summary>
        /// 保留几位小数 来验证是否相等
        /// </summary>
        /// <param name="str"></param>
        /// <param name="com">对比</param>
        /// <param name="len">默认俩ing为</param>
        /// <returns></returns>
        public static bool MathDecimalContrast(this decimal str, decimal com, int len = 2)
        {
            try
            {
                return Math.Round(str, len) == Math.Round(com, len);
            }
            catch (Exception)
            {
                return false;
            }
        }


        public static double M5_ParseDouble(this object str)
        {
            if (str == null)
            {
                return 0;
            }
            double a;
            double.TryParse(str.ToString(), out a);
            return a;
        }
        public static DateTime M5_ParseDatetime(this string str)
        {
            if (str == null)
            {
                return new DateTime(1990, 1, 1);
            }
            DateTime a;
            DateTime.TryParse(str.ToString(), out a);
            return a;
        }
    }
}