using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

namespace iWareSda_QQJF.WEBAPI.TestPost
{
	public class SignExtension
	{
		public static bool Validate(string timeStamp, string nonce, string staffId, string token, string data, string signature)
		{
			var hash = System.Security.Cryptography.MD5.Create();
			//拼接签名数据
			var signStr = timeStamp + nonce + staffId + token + data;
			//将字符串中字符按升序排序
			var sortStr = string.Concat(signStr.OrderBy(c => c));
			var bytes = Encoding.UTF8.GetBytes(sortStr);
			//使用MD5加密
			var md5Val = hash.ComputeHash(bytes);
			//把二进制转化为大写的十六进制
			StringBuilder result = new StringBuilder();
			foreach (var c in md5Val)
			{
				result.Append(c.ToString("X2"));
			}

			return result.ToString().ToUpper() == signature;
		}

		/// <summary>
		/// 前端接口使用的签名验证
		/// </summary>
		/// <param name="timeStamp"></param>
		/// <param name="nonce"></param>
		/// <param name="appKey"></param>
		/// <param name="appSecret"></param>
		/// <param name="accessToken"></param>
		/// <param name="data"></param>
		/// <param name="signature"></param>
		/// <returns></returns>
		public static bool ValidateApp(string timeStamp, string nonce, string appKey, string appSecret, string accessToken, string data, string signature)
		{
			var hash = System.Security.Cryptography.MD5.Create();
			//拼接签名数据
			var signStr = timeStamp + nonce + appKey + appSecret + accessToken + data;
			//将字符串中字符按升序排序
			var sortStr = string.Concat(signStr.OrderBy(c => c));
			var bytes = Encoding.UTF8.GetBytes(sortStr);
			//使用MD5加密
			var md5Val = hash.ComputeHash(bytes);
			//把二进制转化为大写的十六进制
			StringBuilder result = new StringBuilder();
			foreach (var c in md5Val)
			{
				result.Append(c.ToString("X2"));
			}

			return result.ToString().ToUpper() == signature;
		}

		/// <summary>
		/// 货主接口使用的签名验证
		/// </summary>
		/// <param name="timeStamp"></param>
		/// <param name="nonce"></param>
		/// <param name="consignorCode"></param>
		/// <param name="token"></param>
		/// <param name="data"></param>
		/// <param name="signature"></param>
		/// <returns></returns>
		public static bool ValidateConsignor(string timeStamp, string nonce, string consignorCode, string token, string data, string signature)
		{
			var hash = System.Security.Cryptography.MD5.Create();
			//拼接签名数据
			var signStr = timeStamp + nonce + consignorCode + token + data;
			//将字符串中字符按升序排序
			var sortStr = string.Concat(signStr.OrderBy(c => c));
			var bytes = Encoding.UTF8.GetBytes(sortStr);
			//使用MD5加密
			var md5Val = hash.ComputeHash(bytes);
			//把二进制转化为大写的十六进制
			StringBuilder result = new StringBuilder();
			foreach (var c in md5Val)
			{
				result.Append(c.ToString("X2"));
			}

			return result.ToString().ToUpper() == signature;
		}
	}
}