using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using Winsoft.GOV.XF.WebApi.WXCore.Data;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace Winsoft.GOV.XF.WebApi.WXCore.Services
{
    public class WXApiService : BaseService
    {
        public WXApiService(XFDbContext context, ILoggerFactory loggerFactory, IConfigurationRoot config): base(context, loggerFactory, config)
        {

        }

        public async Task Notify(string openId, string msg)
        {
            Logger.LogInformation(await HttpPostAsync(_config["WXApi"] + "/api/Message", "{\"OpenId\":\"" + openId + "\",\"Content\":\"" + msg + "\"}"));
        }

        private async Task<string> HttpPostAsync(string url, string data)
        {
            try
            {
                Logger.LogInformation(url);

                HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
                Encoding encoding = Encoding.UTF8;
                string param = data;
                byte[] bs = Encoding.UTF8.GetBytes(param.ToString());
                //byte[] bs = new byte[]{};  
                string responseData = String.Empty;
                req.Method = "POST";
               
                req.ContentType = "application/json;charset=utf-8";
                req.ContentLength = bs.Length;
                //return;  
                using (Stream reqStream = req.GetRequestStream())
                {
                    reqStream.Write(bs, 0, bs.Length);
                    reqStream.Close();
                }

                using (HttpWebResponse response = (HttpWebResponse)await req.GetResponseAsync())
                {
                    return GetResponseAsString(response);
                }
            }
            catch (Exception ex)
            {
                Logger.LogError("微信接口POST错误：{0}", ex.Message);
                return String.Empty;
            }
        }

        private string GetResponseAsString(HttpWebResponse rsp)
        {
            Stream stream = null;
            StreamReader reader = null;

            // 以字符流的方式读取HTTP响应
            stream = rsp.GetResponseStream();
            reader = new StreamReader(stream, Encoding.UTF8);
            return reader.ReadToEnd();
        }
    }
}