using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SA.Core.Util
{
    public class HttpHelper
    {

        public static bool AcceptAllCertifications(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certification, System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }

        private static readonly HttpClient HttpClient;

        static HttpHelper()
        {

            HttpClient = new HttpClient();
            HttpClient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36");
        }

        /// <summary>
        /// 发起POST同步请求
        /// 
        /// </summary>
        /// <param name="url"></param>
        /// <param name="postData"></param>
        /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
        /// <param name="headers">填充消息头</param>        
        /// <returns></returns>
        public static string HttpPost(string url, string postData , string contentType , int timeOut = 30, Dictionary<string, string>? headers =null)
        {
            postData = postData ?? "";

            using (HttpContent httpContent = new StringContent(postData))
            {

                return HttpPost(url, httpContent, contentType, timeOut, headers);
            }

        }

        public static string HttpPost(string url, HttpContent postData , string contentType , int timeOut = 30, Dictionary<string, string>? headers= null)
        {

            if (headers != null)
            {

                foreach (var header in headers)
                    HttpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
            }
            else
            {
                HttpClient.DefaultRequestHeaders.Clear();
            }
            if (!string.IsNullOrEmpty(contentType))
                postData.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);

           // HttpClient.Timeout = new TimeSpan(0, 0, timeOut);
            HttpResponseMessage response = HttpClient.PostAsync(url, postData).Result;
            return response.Content.ReadAsStringAsync().Result;
        }

        public static HttpResponseMessage HttpDelete(string url, int timeOut = 30)
        {
            HttpResponseMessage response = HttpClient.DeleteAsync(url).Result;

            return response;
        }

        public static string HttpPut(string url, string putData , int timeOut = 30)
        {
            using (HttpContent httpContent = new StringContent(putData, Encoding.UTF8))
            {
                HttpResponseMessage response = HttpClient.PutAsync(url, httpContent).Result;
                return response.Content.ReadAsStringAsync().Result;
            }
        }

        /// <summary>
        /// 发起POST异步请求
        /// </summary>
        /// <param name="url"></param>
        /// <param name="postData"></param>
        /// <param name="contentType">application/xml、application/json、application/text、application/x-www-form-urlencoded</param>
        /// <param name="headers">填充消息头</param>        
        /// <returns></returns>
        public static async Task<string> HttpPostAsync(string url, string postData , string contentType, int timeOut = 30, Dictionary<string, string>? headers = null)
        {
            postData = postData ?? "";
            using (HttpClient client = new HttpClient())
            {
                client.Timeout = new TimeSpan(0, 0, timeOut);
                if (headers != null)
                {
                    foreach (var header in headers)
                        client.DefaultRequestHeaders.Add(header.Key, header.Value);
                }
                using (HttpContent httpContent = new StringContent(postData, Encoding.UTF8))
                {
                    if (contentType != null)
                        httpContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue(contentType);

                    HttpResponseMessage response = await client.PostAsync(url, httpContent);
                    return await response.Content.ReadAsStringAsync();
                }
            }
        }


        public static string Send(HttpRequestMessage httpRequestMessage)
        {
            using (HttpClient client = new HttpClient())
            {
                HttpResponseMessage response = client.SendAsync(httpRequestMessage).Result;
                return response.Content.ReadAsStringAsync().Result;
            }
        }


        /// <summary>
        /// 发起GET同步请求
        /// </summary>
        /// <param name="url"></param>
        /// <param name="headers"></param>
        /// <param name="contentType"></param>
        /// <returns></returns>
        public static string HttpGet(string url, Dictionary<string, string>? headers = null)
        {
            using (HttpClient client = new HttpClient())
            {
                if (headers != null)
                {
                    foreach (var header in headers)
                        client.DefaultRequestHeaders.Add(header.Key, header.Value);
                }
                
                HttpResponseMessage response = client.GetAsync(url).Result;
                return response.Content.ReadAsStringAsync().Result;
            }
        }

        /// <summary>
        /// 发起GET异步请求
        /// </summary>
        /// <param name="url"></param>
        /// <param name="headers"></param>
        /// <param name="contentType"></param>
        /// <returns></returns>
        public static async Task<string> HttpGetAsync(string url, Dictionary<string, string>? headers = null)
        {
            using (HttpClient client = new HttpClient())
            {
                if (headers != null)
                {
                    foreach (var header in headers)
                        client.DefaultRequestHeaders.Add(header.Key, header.Value);
                }
                HttpResponseMessage response = await client.GetAsync(url);
                return await response.Content.ReadAsStringAsync();
            }
        }
    }
}