using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace BLV_API
{
    public static class Tools
    {

        /// <summary>
        /// 获取IP
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        public static string GetClientIP(HttpRequestBase Request)
        {
            string IP = "";
            string PPP =Request.UserHostAddress;
            string III =Request.ServerVariables["REMOTE_ADDR"];
            if (string.IsNullOrEmpty(III))
            {
                IP = PPP;
            }
            else
            {
                IP = III;
            }
            return IP;
        }
        public static string GetApplicationPath()
        {
            return AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
        }
        public static string MD5Encrypt(string strEnc)
        {
            string result;
            try
            {
                MD5 md5Hasher = MD5.Create();
                byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(strEnc));
                StringBuilder sBuilder = new StringBuilder();
                int num;
                for (int i = 0; i < data.Length; i = num + 1)
                {
                    sBuilder.Append(data[i].ToString("x2"));
                    num = i;
                }
                result = sBuilder.ToString();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return result;
        }

        /// <summary>
        /// post数据接口
        /// </summary>
        /// <param name="url"></param>
        /// <param name="postData"></param>
        /// <param name="method">post和put，默认post</param>
        /// <returns></returns>
        public static string PostWebRequest(string url, string postData)
        {
            string result = string.Empty;
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            //req.Timeout = 10000;//设置请求超时时间，单位为毫秒
            req.ContentType = "application/json";
            byte[] data = Encoding.UTF8.GetBytes(postData);
            req.ContentLength = data.Length;
            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(data, 0, data.Length);
            }
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            using (Stream stream = resp.GetResponseStream())
            {
                using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                {
                    result = reader.ReadToEnd();//获取响应内容
                }
            }
            return result;
        }
        /// <summary>
        /// post数据接口
        /// </summary>
        /// <param name="url"></param>
        /// <param name="headerAuthorization"></param>
        /// <param name="postData"></param>
        /// <returns></returns>
        public static string PostWebRequest(string url, string headerAuthorization, string postData)
        {
            string result = string.Empty;
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.Headers.Add("Authorization", headerAuthorization);
            byte[] data = Encoding.UTF8.GetBytes(postData);
            req.ContentLength = data.Length;
            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(data, 0, data.Length);
            }
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            using (Stream stream = resp.GetResponseStream())
            {
                using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                {
                    result = reader.ReadToEnd();//获取响应内容
                }
            }
            return result;
        }
    }
}