using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;

namespace learun.util
{
	/// <summary>
	/// 版 本 EasyCode EC管理后台
	/// Copyright (c) 2019-present EC管理有限公司
	/// 创建人：tobin
	/// 日 期：2019.09.11
	/// 描 述：http方法
	/// </summary>
	public class HttpMethods
	{
		/// <summary>
		/// 创建HttpClient
		/// </summary>
		/// <returns></returns>
		public static HttpClient CreateHttpClient(string url, IDictionary<string, string> cookies = null)
		{
			HttpClient httpclient;
			HttpClientHandler handler = new HttpClientHandler();
			var uri = new Uri(url);
			if (cookies != null)
			{
				foreach (var key in cookies.Keys)
				{
					string one = key + "=" + cookies[key];
					handler.CookieContainer.SetCookies(uri, one);
				}
			}
			//如果是发送HTTPS请求
			if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
			{
				ServicePointManager.ServerCertificateValidationCallback += (sender, cert, chain, sslPolicyErrors) => true;
				httpclient = new HttpClient(handler);
			}
			else
			{
				httpclient = new HttpClient(handler);
			}
			return httpclient;
		}

		/// <summary>
		/// post 请求
		/// </summary>
		/// <param name="url">请求地址</param>
		/// <param name="jsonData">请求参数</param>
		/// <returns></returns>
		public static Task<string> Post(string url, string jsonData)
		{
			HttpClient httpClient = CreateHttpClient(url);
			var postData = new StringContent(jsonData);
			postData.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
			Task<string> result = httpClient.PostAsync(url, postData).Result.Content.ReadAsStringAsync();
			return result;
		}

		/// <summary>
		/// post 请求
		/// </summary>
		/// <param name="url">请求地址</param>
		/// <returns></returns>
		public static Task<string> Post(string url)
		{
			HttpClient httpClient = CreateHttpClient(url);
			var postData = new StringContent("");
			postData.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
			Task<string> result = httpClient.PostAsync(url, postData).Result.Content.ReadAsStringAsync();
			return result;
		}

		/// <summary>
		/// post 请求
		/// </summary>
		/// <param name="url">请求地址</param>
		/// <param name="req">请求参数</param>
		/// <returns></returns>
		public static Task<string> Post(string url, byte[] req)
		{
			HttpClient httpClient = CreateHttpClient(url);
			var postData = new ByteArrayContent(req);
			Task<string> result = httpClient.PostAsync(url, postData).Result.Content.ReadAsStringAsync();
			return result;
		}

		/// <summary>
		/// get 请求
		/// </summary>
		/// <param name="url">请求地址</param>
		/// <returns></returns>
		public static Task<string> Get(string url)
		{
			HttpClient httpClient = CreateHttpClient(url);
			Task<string> result = httpClient.GetAsync(url).Result.Content.ReadAsStringAsync();
			return result;
		}
	}
}