using System.Collections;
using System.Text.RegularExpressions;

namespace SafeCampus.Core.Extension
{
    public static partial class Extensions
    {
        #region 转换为long
        /// <summary>
        /// 将object转换为long，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static long ParseToLong(this object obj)
        {
            try
            {
                if (obj == null)
                    return 0L;

                return long.Parse(obj.ToString());
            }
            catch
            {
                return 0L;
            }
        }

        /// <summary>
        /// 将object转换为long，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static long ParseToLong(this string str, long defaultValue)
        {
            try
            {
                return long.Parse(str);
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region 转换为int
        /// <summary>
        /// 将object转换为int，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static int ParseToInt(this object str)
        {
            try
            {
                return Convert.ToInt32(str);
            }
            catch
            {
                return 0;
            }
        }

        /// <summary>
        /// 将object转换为int，若转换失败，则返回指定值。不抛出异常。 
        /// null返回默认值
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static int ParseToInt(this object str, int defaultValue)
        {
            if (str == null)
            {
                return defaultValue;
            }
            try
            {
                return Convert.ToInt32(str);
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region 转换为short
        /// <summary>
        /// 将object转换为short，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static short ParseToShort(this object obj)
        {
            try
            {
                return short.Parse(obj.ToString());
            }
            catch
            {
                return 0;
            }
        }

        /// <summary>
        /// 将object转换为short，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static short ParseToShort(this object str, short defaultValue)
        {
            try
            {
                return short.Parse(str.ToString());
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region 转换为demical
        /// <summary>
        /// 将object转换为demical，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static decimal ParseToDecimal(this object str, decimal defaultValue)
        {
            try
            {
                return decimal.Parse(str.ToString());
            }
            catch
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 将object转换为demical，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static decimal ParseToDecimal(this object str)
        {
            try
            {
                return decimal.Parse(str.ToString());
            }
            catch
            {
                return 0;
            }
        }
        #endregion

        #region 转化为bool
        /// <summary>
        /// 将object转换为bool，若转换失败，则返回false。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool ParseToBool(this object str)
        {
            try
            {
                return bool.Parse(str.ToString());
            }
            catch
            {
                return false;
            }
        }

        /// <summary>
        /// 将object转换为bool，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="result"></param>
        /// <returns></returns>
        public static bool ParseToBool(this object str, bool result)
        {
            try
            {
                return bool.Parse(str.ToString());
            }
            catch
            {
                return result;
            }
        }
        #endregion

        #region 转换为float
        /// <summary>
        /// 将object转换为float，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static float ParseToFloat(this object str)
        {
            try
            {
                return float.Parse(str.ToString());
            }
            catch
            {
                return 0;
            }
        }

        /// <summary>
        /// 将object转换为float，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="result"></param>
        /// <returns></returns>
        public static float ParseToFloat(this object str, float result)
        {
            try
            {
                return float.Parse(str.ToString());
            }
            catch
            {
                return result;
            }
        }
        #endregion

        #region 转换为Guid
        /// <summary>
        /// 将string转换为Guid，若转换失败，则返回Guid.Empty。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static Guid ParseToGuid(this string str)
        {
            try
            {
                return new Guid(str);
            }
            catch
            {
                return Guid.Empty;
            }
        }
        #endregion

        #region 转换为DateTime
        /// <summary>
        /// 将string转换为DateTime，若转换失败，则返回日期最小值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static DateTime ParseToDateTime(this string str)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(str))
                {
                    return DateTime.MinValue;
                }
                if (str.Contains("-") || str.Contains("/"))
                {
                    return DateTime.Parse(str);
                }
                else
                {
                    int length = str.Length;
                    switch (length)
                    {
                        case 4:
                            return DateTime.ParseExact(str, "yyyy", System.Globalization.CultureInfo.CurrentCulture);
                        case 6:
                            return DateTime.ParseExact(str, "yyyyMM", System.Globalization.CultureInfo.CurrentCulture);
                        case 8:
                            return DateTime.ParseExact(str, "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);
                        case 10:
                            return DateTime.ParseExact(str, "yyyyMMddHH", System.Globalization.CultureInfo.CurrentCulture);
                        case 12:
                            return DateTime.ParseExact(str, "yyyyMMddHHmm", System.Globalization.CultureInfo.CurrentCulture);
                        case 14:
                            return DateTime.ParseExact(str, "yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);
                        default:
                            return DateTime.ParseExact(str, "yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);
                    }
                }
            }
            catch
            {
                return DateTime.MinValue;
            }
        }

        /// <summary>
        /// 将string转换为DateTime，若转换失败，则返回默认值。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static DateTime ParseToDateTime(this string str, DateTime? defaultValue)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(str))
                {
                    return defaultValue.GetValueOrDefault();
                }
                if (str.Contains("-") || str.Contains("/"))
                {
                    return DateTime.Parse(str);
                }
                else
                {
                    int length = str.Length;
                    switch (length)
                    {
                        case 4:
                            return DateTime.ParseExact(str, "yyyy", System.Globalization.CultureInfo.CurrentCulture);
                        case 6:
                            return DateTime.ParseExact(str, "yyyyMM", System.Globalization.CultureInfo.CurrentCulture);
                        case 8:
                            return DateTime.ParseExact(str, "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);
                        case 10:
                            return DateTime.ParseExact(str, "yyyyMMddHH", System.Globalization.CultureInfo.CurrentCulture);
                        case 12:
                            return DateTime.ParseExact(str, "yyyyMMddHHmm", System.Globalization.CultureInfo.CurrentCulture);
                        case 14:
                            return DateTime.ParseExact(str, "yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);
                        default:
                            return DateTime.ParseExact(str, "yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);
                    }
                }
            }
            catch
            {
                return defaultValue.GetValueOrDefault();
            }
        }
        #endregion

        #region 转换为string
        /// <summary>
        /// 将object转换为string，若转换失败，则返回""。不抛出异常。  
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string ParseToString(this object obj)
        {
            try
            {
                if (obj == null)
                {
                    return string.Empty;
                }
                else
                {
                    return obj.ToString();
                }
            }
            catch
            {
                return string.Empty;
            }
        }
        public static string ParseToStrings<T>(this object obj)
        {
            try
            {
                if (obj is IEnumerable<T> list)
                {
                    return string.Join(",", list);
                }
                else
                {
                    return obj.ToString();
                }
            }
            catch
            {
                return string.Empty;
            }

        }
        #endregion

        #region 转换为double
        /// <summary>
        /// 将object转换为double，若转换失败，则返回0。不抛出异常。  
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static double ParseToDouble(this object obj)
        {
            try
            {
                return double.Parse(obj.ToString());
            }
            catch
            {
                return 0;
            }
        }

        /// <summary>
        /// 将object转换为double，若转换失败，则返回指定值。不抛出异常。  
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultValue"></param>
        /// <returns></returns>
        public static double ParseToDouble(this object str, double defaultValue)
        {
            try
            {
                return double.Parse(str.ToString());
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region 强制转换类型
        /// <summary>
        /// 强制转换类型
        /// </summary>
        /// <typeparam name="TResult"></typeparam>
        /// <param name="source"></param>
        /// <returns></returns>
        public static IEnumerable<TResult> CastSuper<TResult>(this IEnumerable source)
        {
            foreach (object item in source)
            {
                yield return (TResult)Convert.ChangeType(item, typeof(TResult));
            }
        }
        #endregion

        #region 阿拉伯数字转换为中文数字（0-99999）
        public static string NumberToChinese(int num)
        {
            string strNum = num.ToString();
            string result = "";
            if (strNum.Length == 5)
            {//万
                result += OneBitNumberToChinese(strNum.Substring(0, 1)) + "万";
                strNum = strNum.Substring(1);
            }
            if (strNum.Length == 4)
            {//千
                string secondBitNumber = strNum.Substring(0, 1);
                if (secondBitNumber == "0") result += "零";
                else result += OneBitNumberToChinese(secondBitNumber) + "千";
                strNum = strNum.Substring(1);
            }
            if (strNum.Length == 3)
            {//百
                string hundredBitNumber = strNum.Substring(0, 1);
                if (hundredBitNumber == "0" && result.Substring(result.Length - 1) != "零") result += "零";
                else result += OneBitNumberToChinese(hundredBitNumber) + "百";
                strNum = strNum.Substring(1);
            }
            if (strNum.Length == 2)
            {//十
                string hundredBitNumber = strNum.Substring(0, 1);
                if (hundredBitNumber == "0" && result.Substring(result.Length - 1) != "零") result += "零";
                else if (hundredBitNumber == "1" && string.IsNullOrEmpty(result)) result += "十";//10->十
                else result += OneBitNumberToChinese(hundredBitNumber) + "十";
                strNum = strNum.Substring(1);
            }
            if (strNum.Length == 1)
            {//个
                if (strNum == "0") result += "零";
                else result += OneBitNumberToChinese(strNum);
            }
            //100->一百零零
            if (!string.IsNullOrEmpty(result) && result != "零") result = result.TrimEnd('零');
            return result;
        }

        //数字1-9转换为中文数字
        private static string OneBitNumberToChinese(string num)
        {
            string numStr = "123456789";
            string chineseStr = "一二三四五六七八九";
            string result = "";
            int numIndex = numStr.IndexOf(num);
            if (numIndex > -1)
            {
                result = chineseStr.Substring(numIndex, 1);
            }
            return result;
        }
        #endregion

        #region 日期转大写
        /// <summary>
        /// 年月日转换为大写
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public static string YMDToUpper(DateTime date)
        {
            int year = date.Year;
            int month = date.Month;
            int day = date.Day;
            return numtoUpper(year) + "年" + monthtoUpper(month) + "月" + daytoUpper(day) + "日";
        }

        /// <summary>
        /// 年月转换为大写
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public static string YMToUpper(DateTime date)
        {
            int year = date.Year;
            int month = date.Month;
            return numtoUpper(year) + "年" + monthtoUpper(month) + "月";
        }

        //把数字转换为大写
        private static string numtoUpper(int num)
        {
            String str = num.ToString();
            string rstr = "";
            int n;
            for (int i = 0; i < str.Length; i++)
            {
                n = Convert.ToInt16(str[i].ToString());//char转数字,转换为字符串，再转数字
                switch (n)
                {
                    case 0:
                        rstr = rstr + "〇";
                        break;
                    case 1:
                        rstr = rstr + "一";
                        break;
                    case 2:
                        rstr = rstr + "二";
                        break;
                    case 3:
                        rstr = rstr + "三";
                        break;
                    case 4:
                        rstr = rstr + "四";
                        break;
                    case 5:
                        rstr = rstr + "五";
                        break;
                    case 6:
                        rstr = rstr + "六";
                        break;
                    case 7:
                        rstr = rstr + "七";
                        break;
                    case 8:
                        rstr = rstr + "八";
                        break;
                    default:
                        rstr = rstr + "九";
                        break;
                }
            }
            return rstr;
        }

        //月转化为大写
        private static string monthtoUpper(int month)
        {
            if (month < 10)
            {
                return numtoUpper(month);
            }
            else if (month == 10)
            {
                return "十";
            }
            else
            {
                return "十" + numtoUpper(month - 10);
            }
        }

        //日转化为大写
        private static string daytoUpper(int day)
        {
            if (day < 20)
            {
                return monthtoUpper(day);
            }
            else
            {
                String str = day.ToString();
                if (str[1] == '0')

                {
                    return numtoUpper(Convert.ToInt16(str[0].ToString())) + "十";
                }
                else

                {
                    return numtoUpper(Convert.ToInt16(str[0].ToString())) + "十" + numtoUpper(Convert.ToInt16(str[1].ToString()));
                }
            }
        }
        #endregion

        #region 时间戳转日期
        /// <summary>
        /// 时间戳转日期
        /// </summary>
        /// <param name="timeStamp"></param>
        /// <param name="isMinSeconds"></param>
        /// <returns></returns>
        public static DateTime StampToDatetime(this long timeStamp, bool isMinSeconds = false)
        {
            var startTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));//当地时区
            //返回转换后的日期
            if (isMinSeconds)
                return startTime.AddMilliseconds(timeStamp);
            else
                return startTime.AddSeconds(timeStamp);
        }
        /// <summary>
        /// 时间戳转日期
        /// </summary>
        /// <param name="timeStamp"></param>
        /// <param name="isMinSeconds"></param>
        /// <returns></returns>
        public static DateTime StampToDatetime(this string timeStamp, bool isMinSeconds = false)
        {
            var timeStampLong = long.Parse(timeStamp);
            var startTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));//当地时区
            //返回转换后的日期
            if (isMinSeconds)
                return startTime.AddMilliseconds(timeStampLong);
            else
                return startTime.AddSeconds(timeStampLong);
        }
        #endregion

        #region 字符串正则替换
        /// <summary>
        /// 字符串正则替换
        /// </summary>
        /// <param name="targetStr"></param>
        /// <param name="patternStr"></param>
        /// <param name="replaceStr"></param>
        /// <param name="isRecursion"></param>
        /// <returns></returns>
        public static string ReplaceMatchStr(this string targetStr, string patternStr, string replaceStr,bool isRecursion = true)
        {
            Regex regex= new Regex(patternStr);
            Match match= regex.Match(targetStr);
            return ReplaceMatchingStr(targetStr,match,replaceStr,isRecursion);
        }

        private static string ReplaceMatchingStr(string targetStr, Match match, string replaceStr, bool isRecursion)
        {
            //是否匹配成功
            if (match.Success)
            {
                //处理字符串
                targetStr = ReplaceStr(targetStr, match, replaceStr);

                //是否递归匹配
                if (isRecursion)
                    targetStr = ReplaceMatchingStr(targetStr, match.NextMatch(), replaceStr, true);
            }
            return targetStr;
        }
        private static string ReplaceStr(string targetStr, Match match, string replaceStr)
        {
            //替换字符
            string newStr = targetStr.Replace(match.ToString(), replaceStr);
            return newStr;
        }
        public static string RedactString(this string input, int start, int length, char replaceChar)
        {
            if (input.Length < start + length)
            {
                return input;
            }

            string prefix = input.Substring(0, start);
            string suffix = input.Substring(start + length);

            string replacement = new string(replaceChar, length);

            return prefix + replacement + suffix;
        }
        #endregion
    }
}