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

namespace DS.Module.Core.Helpers
{
    /// <summary>
    /// 
    /// </summary>
    public static class CommonFTPHelper
    {
        #region
        /// <summary>
        /// 转发EDI内部方法
        /// </summary>
        /// <param name="requestUrl">请求接口地址</param>
        /// <param name="nameValueCollection">键值对参数</param>
        /// <param name="fileInfo">文件信息</param>
        /// <param name="contentType">默认 application/json</param>
        /// <returns>返回结果</returns>
        public static string TransmitFtpFile(string requestUrl, NameValueCollection nameValueCollection, dynamic fileInfo,
            string contentType = "application/json")
        {
            var result = string.Empty;

            using (var httpClient = new HttpClient())
            {
                try
                {
                    using (var reduceAttach = new MultipartFormDataContent())
                    {
                        string[] allKeys = nameValueCollection.AllKeys;
                        foreach (string key in allKeys)
                        {
                            var dataContent = new ByteArrayContent(Encoding.UTF8.GetBytes(nameValueCollection[key]));

                            dataContent.Headers.ContentDisposition = new ContentDispositionHeaderValue($"form-data")
                            {
                                Name = key
                            };

                            reduceAttach.Add(dataContent);
                        }

                        #region 文件参数
                        if (fileInfo != null)
                        {
                            var Content = new ByteArrayContent(fileInfo.fileBytes);

                            //Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")
                            //{
                            //    Name = fileInfo.file.ToString(),
                            //    FileName = fileInfo.fileName.ToString(),

                            //};

                            Content.Headers.Add("Content-Type", contentType);

                            reduceAttach.Add(Content, fileInfo.file.ToString(), HttpUtility.UrlEncode(fileInfo.fileName.ToString()));
                        }
                        #endregion

                        //请求
                        var response = httpClient.PostAsync(requestUrl, reduceAttach).Result;
                        result = response.Content.ReadAsStringAsync().Result;
                    }
                }
                catch (Exception ex)
                {
                    result = JsonConvert.SerializeObject(new
                    {
                        message = $"{nameof(TransmitFtpFile)} 转发EDI内部方法异常，原因：{ex.Message}",
                        status = 0
                    });
                }

            }
            return result;
        }
        #endregion
    }
}