using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Web;

/// <summary>
/// globle 的摘要说明
/// </summary>
public class globle
{
    public class Global
    {
        private static string appid = "wxbff2f5d49ec4be77";
        private static string appsecret = "f271039e68a914fd1cd92cf00f79e20f";

        //application 名称冲突 不能一样的名字
        public static Models.WeiXin.AccessToken getAccessToken
        {
            get
            {
                //每次都获取新的 疾控与oa 获取同一个公众号的accesstoken相互影响
                var at = new Models.WeiXin.AccessToken();
                WebClient wc = new WebClient();
                at.access_token= wc.DownloadString("http://oa.dcqcdc.com/dccdc/zzj/getaccesstoken");
                return at;
                HttpContext hc = HttpContext.Current;
                if (hc.Application["AccessTokenYM1"] == null) 
                {
                    var token = _getAccessToken();
                    hc.Application["AccessTokenYM1"] = token;
                    hc.Application["access_token_expires_in_ym1"] = DateTime.Now.AddSeconds(7000); 
                    return token;
                }
                else
                {
                    DateTime dt = (DateTime)hc.Application["access_token_expires_in_ym1"];
                    if (dt >= DateTime.Now)
                        return hc.Application["AccessTokenYM1"] as Models.WeiXin.AccessToken;
                    else
                    {
                        var token = _getAccessToken();
                        hc.Application["AccessTokenYM1"] = token;
                        hc.Application["access_token_expires_in_ym1"] = DateTime.Now.AddSeconds(7000);
                        return token;
                    }
                }
            }
        }
        private static Models.WeiXin.AccessToken _getAccessToken()
        {
            WebClient wc = new WebClient();
            var stream = wc.OpenRead("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + appsecret + "");
            var sr = new StreamReader(stream);
            string token = sr.ReadToEnd();
            sr.Close();
            stream.Dispose();
            var accesstoken = Newtonsoft.Json.JsonConvert.DeserializeObject<Models.WeiXin.AccessToken>(token);
            if (string.IsNullOrEmpty(accesstoken.access_token))
            {
                Models.WeiXin.error err = Newtonsoft.Json.JsonConvert.DeserializeObject<Models.WeiXin.error>(token);
                Exception wx = new Exception(token);
                //wx.Message = token;
                throw (wx);
            }
            return accesstoken;
        }


        public static string jsapi_ticket
        {
            get
            {
                HttpContext hc = HttpContext.Current;
                if (hc.Application["jsapi_ticket"] == null || hc.Application["AccessToken"] == null)
                {
                    var token = _getjsapi_ticket();
                    hc.Application["jsapi_ticket"] = token;
                    hc.Application["jsapi_ticket_expires_in"] = DateTime.Now.AddSeconds(7000);
                    return token;
                }
                else
                {
                    DateTime dt = (DateTime)hc.Application["jsapi_ticket_expires_in"];
                    if (dt >= DateTime.Now)
                        return hc.Application["jsapi_ticket"].ToString();
                    else
                    {
                        var token = _getjsapi_ticket();
                        hc.Application["jsapi_ticket"] = token;
                        hc.Application["jsapi_ticket_expires_in"] = DateTime.Now.AddSeconds(7000);
                        return token;
                    }
                }
            }
        }
        private static string _getjsapi_ticket()
        {
            var token = getAccessToken;
            WebClient wc = new WebClient();
            var stream = wc.OpenRead("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + token.access_token + "&type=jsapi");
            var sr = new StreamReader(stream);
            string jsapi = sr.ReadToEnd();
            sr.Close();
            stream.Dispose();
            Dictionary<string, object> jsDict = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>>(jsapi);

            return jsDict["ticket"].ToString();
        }

        #region 获取微信用户信息
        public static string GetOAuthOpenId(string code)
        {
            string url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appid + "&secret=" + appsecret + "&code=" + code + "&grant_type=authorization_code";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream stream = response.GetResponseStream();   //获取响应的字符串流
            if (stream != null)
            {
                StreamReader sr = new StreamReader(stream); //创建一个stream读取流
                string html = sr.ReadToEnd();   //从头读到尾，放到字符串html李米
                sr.Close();
                stream.Close();
                return html;
            }
            return "";
        }
        #endregion
    }
}