using System;
using System.Collections.Generic;
using System.IO;
using System.Net.Http;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace Estsh.Core.Util
{
    public class HttpClientHelper
    {
        /// <summary>
        /// 通过Get请求数据
        /// </summary>
        /// <returns></returns>
        public static async Task<string> HttpGetMathod(string url)
        {
            using (HttpClient httpClient = new HttpClient()
            {
                Timeout = TimeSpan.FromSeconds(3000)
            })
            {
                var response = await httpClient.GetAsync(url);

                var result = await response.Content.ReadAsStringAsync();
                return result;
            }
        }

        /// <summary>
        /// 通过Get请求数据
        /// </summary>
        /// <returns></returns>
        public static async Task<string> HttpGetMathod(string url, Dictionary<string, string> param)
        {
            using (HttpClient httpClient = new HttpClient()
            {
                Timeout = TimeSpan.FromSeconds(3000)
            })
            {
                StringBuilder buffer = new StringBuilder("?");
                int i = 0;
                foreach (string key in param.Keys)
                {
                    if (i > 0)
                    {
                        buffer.AppendFormat("&{0}={1}", key, param[key]);
                    }
                    else
                    {
                        buffer.AppendFormat("{0}={1}", key, param[key]);
                    }
                    i++;
                }
                var response = await httpClient.GetAsync(url + buffer.ToString());
                var result = await response.Content.ReadAsStringAsync();
                return result;
            }
        }

        /// <summary>
        /// 使用Post请求数据：application/json
        /// </summary>
        /// <returns></returns>
        public static string HttpPostByJsonMathod(string url, object model)
        {
            try
            {
                using (HttpClient httpClient = new HttpClient())
                {
                    var response = httpClient.PostAsync(
                    url,
                    new StringContent(
                    Newtonsoft.Json.JsonConvert.SerializeObject(model),
                    Encoding.UTF8,
                   "application/json")).GetAwaiter().GetResult();
                    if (response.StatusCode == System.Net.HttpStatusCode.OK)
                    {
                        string result = response.Content.ReadAsStringAsync().Result;
                        return result;
                    }
                    else
                    {
                        return string.Empty;
                    }
                }
            }
            catch (System.Exception ex)
            {
                LogHelper.Error("调用API接口错误：" + url, ex);
                return string.Empty;
            }
        }
    }

}