using HL_FristAidPlatform_Public;
using Newtonsoft.Json;
using System;
using System.IO;
using System.Net;
using System.Text;

namespace HL_FristAidPlatform_ChestPain_Interface_CCPC
{
    /// <summary>
    /// HTTP 访问类
    /// </summary>
    public class HttpClient
    {
        /// <summary>
        /// 访问胸痛中心云平台接口 提交数据
        /// </summary>
        /// <param name="_webApiUrl">胸痛中心数据填报平台webapi地址</param>
        /// <param name="_appId">当前医院申请的AppID</param>
        /// <param name="_secretKey">当前医院申请的SecretKey</param>
        /// <param name="_ccpcModel">传输实体</param>
        /// <param name="_register_ID">数据填报平台的唯一主键</param>
        /// <returns></returns>
        public RetutnModel PostData(string _webApiUrl, string _appId, string _secretKey, CCPCModel _ccpcModel, out string _register_ID)
        {
            RetutnModel retutnModel = new RetutnModel();
            _register_ID = string.Empty;

            string url = _webApiUrl;
            string appId = _appId;
            string secretKey = _secretKey;
            string requestId = Guid.NewGuid().ToString();
            string time = DateTime.Now.ToString("yyyyMMddHHmmss");

            //make signture plain text
            var signPlain = new StringBuilder();
            signPlain.Append(time);
            signPlain.Append(requestId);

            //make sign
            var sign = Encryption.HmacSHA256(secretKey, signPlain.ToString().ToUpper());
            Console.WriteLine("sign:{0}", sign);

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/json";

            //add headers
            request.Headers.Add("time", time);
            request.Headers.Add("appId", appId);
            request.Headers.Add("requestId", requestId);
            request.Headers.Add("sign", sign);

            //add body
            var postDataString = JsonConvert.SerializeObject(_ccpcModel);
            var dataToPost = Encoding.UTF8.GetBytes(postDataString);
            request.ContentLength = dataToPost.Length;

            using (var requestStream = request.GetRequestStream())
            {
                requestStream.Write(dataToPost, 0, dataToPost.Length);
            }

            //start request
            try
            {
                using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                {
                    var responseStream = response.GetResponseStream();
                    if (responseStream != null)
                    {
                        using (StreamReader reader = new StreamReader(responseStream))
                        {
                            var content = reader.ReadToEnd();
                            retutnModel = JsonConvert.DeserializeObject<RetutnModel>(content);

                            //成功
                            if (retutnModel.ResultCode == "200")
                            {
                                foreach (var item in retutnModel.Data)
                                {
                                    if (item.Key.ToUpper() == "REGISTER_ID")
                                    {
                                        _register_ID = item.Value;
                                        break;
                                    }
                                }
                            }
                        }
                    }
                }
            }
            catch (WebException ex)
            {
                PublicClass.WriteErrorLog("PostData", "胸痛数据填报平台接口返回报错：\r\n请求地址：" + url + "\r\nHeaders：\r\n" + request.Headers + "\r\n请求参数：\r\n" + postDataString + "\r\n错误详细情况：\r\n" + ex);

                using (HttpWebResponse response = (HttpWebResponse)ex.Response)
                {
                    var responseStream = response.GetResponseStream();
                    if (responseStream != null)
                    {
                        using (StreamReader reader = new StreamReader(responseStream))
                        {
                            var content = reader.ReadToEnd();
                            Console.WriteLine(content);
                        }
                    }
                }
            }

            return retutnModel;
        }
    }
}