using System;

using System.Text;

using System.Text.RegularExpressions;

namespace Admin.Core.Common.Helpers

{

/// <summary>

/// 字符串帮助类

/// </summary>

public class StringHelper

{

private static readonly char[] _constant = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' };

/// <summary>

/// 生成随机字符串，默认32位

/// </summary>

/// <param name="length">随机数长度</param>

/// <returns></returns>

public static string GenerateRandom(int length = 32)

{

var newRandom = new StringBuilder();

var rd = new Random();

for (int i = 0; i < length; i++)

{

newRandom.Append(_constant[rd.Next(_constant.Length)]);

}

return newRandom.ToString();

}

/// <summary>

/// 生成随机字符串，只包含数字

/// </summary>

/// <param name="length"></param>

/// <returns></returns>

public static string GenerateRandomNumber(int length = 6)

{

var newRandom = new StringBuilder();

var rd = new Random();

for (int i = 0; i < length; i++)

{

newRandom.Append(_constant[rd.Next(10)]);

}

return newRandom.ToString();

}

public static string Format(string str, object obj)

{

if (str.IsNull())

{

return str;

}

string s = str;

if (obj.GetType().Name == "JObject")

{

foreach (var item in (Newtonsoft.Json.Linq.JObject)obj)

{

var k = item.Key.ToString();

var v = item.Value.ToString();

s = Regex.Replace(s, "\\{" + k + "\\}", v, RegexOptions.IgnoreCase);

}

}

else

{

foreach (System.Reflection.PropertyInfo p in obj.GetType().GetProperties())

{

var xx = p.Name;

var yy = p.GetValue(obj).ToString();

s = Regex.Replace(s, "\\{" + xx + "\\}", yy, RegexOptions.IgnoreCase);

}

}

return s;

}

}

}