using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;



namespace CrawRobot.Class
{
    public static class GetTokenHelper

    {
        // 百度云中开通对应服务应用的 API Key 
        private static string clientId = "1xkwSoQsx0GE6Fm99tzbflAL";//"PMIzFi2xhwSMXgiYqEfGIGx7";
                                                                    // 百度云中开通对应服务应用的 Secret Key
        private static string clientSecret = "A86P8sSdMaYBnRUTD2GQk4i8FcIlEFlR";//"SiLX7KgPZnGKtqOoZCzRw7dakYCt1zrs";

        public static string getAccessToken()
        {
            string authHost = "https://aip.baidubce.com/oauth/2.0/token";
            HttpClient client = new HttpClient();
            List<KeyValuePair<string, string>> paraList = new List<KeyValuePair<string, string>>();
            paraList.Add(new KeyValuePair<string, string>("grant_type", "client_credentials"));
            paraList.Add(new KeyValuePair<string, string>("client_id", clientId));
            paraList.Add(new KeyValuePair<string, string>("client_secret", clientSecret));

            HttpResponseMessage response = client.PostAsync(authHost, new FormUrlEncodedContent(paraList)).Result;
            string result = response.Content.ReadAsStringAsync().Result;
            JObject jo = null;
            var joResult = "";
            jo = (JObject)JsonConvert.DeserializeObject(result);
            joResult = jo["access_token"].ToString();
            return joResult;
        }
    }
}