using System;
using System.Collections;
using System.Runtime.CompilerServices;
using System.Text;

namespace ConsoleDemo
{
    public class PublicData
    {
        /**
         * 公共报文组装
         */
        public static string publicparam(string content,string platformCode ,
            string platformAlias,string privateKey,string password)
        {
            StringBuilder sign =new StringBuilder();
            string contentstr=EncryptDes.Encrypt3Des(content, password);
            sign.Append("content="+contentstr+"&");
            sign.Append("format=JSON&");
            sign.Append("platformCode="+platformCode+"&");
            string time = DateTime.Now.ToString("yyyyMMddHHmmss");
            string serianlNo = platformAlias + time + GenerateCheckCode(8);
            sign.Append("serialNo="+serianlNo+"&");
            sign.Append("signType=RSA&");
            string timestamp=DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            sign.Append("timestamp="+timestamp+"&");
            sign.Append("version=1.0");
            string rsasign = RSA.sign(sign.ToString(), privateKey);
            Hashtable  publictable=new Hashtable();
            publictable.Add("sign",rsasign);
            publictable.Add("format","JSON");
            publictable.Add("platformCode",platformCode);
            publictable.Add("serialNo",serianlNo);
            publictable.Add("signType","RSA");
            publictable.Add("timestamp",timestamp);
            publictable.Add("version","1.0");
            publictable.Add("content",contentstr);
            return ToJson.Table2Json(publictable);
        }

        public static string disposeResponse(string str,string ptpublickey, string deskey)
        {
            
            Hashtable strtable=new Hashtable();
            StringBuilder content=new StringBuilder();
            Hashtable dispose=new Hashtable();
            
            string sign = "";
            string serialNo = "";
            str=str.Replace("{","").Replace("}","").Replace("\"","").Replace(",","&").Replace(":","&");
            string[] arraystr = str.Split('&');
           
            for (int i = 0; i < arraystr.Length-1; i+=2)
            {
                if (arraystr[i]=="sign")
                {
                    sign = arraystr[i + 1];
                }
                if (arraystr[i]=="serialNo")
                {
                    serialNo=arraystr[i + 1];
                }
                strtable.Add(arraystr[i],arraystr[i+1]);
            }
            strtable.Remove("serialNo");
            strtable.Remove("sign");
            ArrayList ke = new ArrayList(strtable.Keys);
            ke.Sort();
            foreach (string tableEntry in ke)
            {
                content.Append(string.Format("{0}={1}&", tableEntry, strtable[tableEntry])); 
            }
            content.Append("serialNo=" + serialNo);
            bool  res=RSA.verify(content.ToString(), sign, ptpublickey, "UTF-8");
            Console.WriteLine(res);
            if (res)
            {
                for (int i = 0; i < arraystr.Length - 1; i += 2)
                {
                    if (arraystr[i] == "content")
                    {
                        
                        arraystr[i+1]=EncryptDes.Decrypt3Des(arraystr[i+1],deskey);
                    }
                    dispose.Add(arraystr[i],arraystr[i+1]);
                    
                }
               return ToJson.Table2Json(dispose);

            }
            else
            {
                return "验签失败";
            }
        }
        /**
         * 随机数生成
         */
        private static string GenerateCheckCode(int codeCount)
        {
            int rep = 0;
            string str = string.Empty;
            long num2 = DateTime.Now.Ticks + rep;
            rep++;
            Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
            for (int i = 0; i < codeCount; i++)
            {
                char ch;
                int num = random.Next();
                if ((num % 2) == 0)
                {
                    ch = (char)(0x30 + ((ushort)(num % 10)));
                }
                else
                {
                    ch = (char)(0x41 + ((ushort)(num % 0x1a)));
                }
                str = str + ch.ToString();
            }
            return str;
        }
    }
}