using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net.Http.Headers;
using WIDESEA_Core.LogHelper;
using System.Security.Cryptography;

namespace WIDESEA_Core.Helper
{
    public class HttpMesHelper
    {
        public static string Post(string serviceAddress, string requestJson = null, string contentType = "application/json", Dictionary<string, string>? headers = null)
        {
            string result = string.Empty;
            DateTime beginDate = DateTime.Now;
            try
            {
                using (HttpContent httpContent = new StringContent(requestJson))
                {
                    httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
                    
                    using HttpClient httpClient = new HttpClient();
                    httpClient.Timeout = new TimeSpan(0, 0, 60);
                    string authorization = "AppKey 1830415116987195392";
                    headers = new Dictionary<string, string>
                    {
                        { "Authorization", authorization },
                        { "Site_tenant_id", "0dc2d164-8a62-417e-8a00-808007464feb" }
                    };
                    if (headers != null)
                    {
                        foreach (var header in headers)
                            httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                    }
                    HttpResponseMessage responseMessage = httpClient.PostAsync(serviceAddress, httpContent).Result;
                    result = responseMessage.Content.ReadAsStringAsync().Result;
                }
                return result;
            }
            catch (Exception e)
            {
                throw new Exception(e.Message);
            }
            finally
            {
                Logger.Add(serviceAddress, requestJson == null ? "" : requestJson, result, beginDate);
            }
        }
        public static string GetStr(string textToEncrypt)
        {
            string publicKey;
            string privateKey;
            GenerateRSAKeyPair(out publicKey, out privateKey);
            byte[] encryptedBytes = RSAEncrypt(textToEncrypt, publicKey);
            // 可以将加密后的字节数组转换为Base64字符串方便后续处理，例如传输等
            string encryptedBase64 = Convert.ToBase64String(encryptedBytes);
            return encryptedBase64;
        }
        public static void GenerateRSAKeyPair(out string publicKey, out string privateKey)
        {
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(2048))
            {
                publicKey = rsa.ToXmlString(false);
                privateKey = rsa.ToXmlString(true);
            }
        }
        public static byte[] RSAEncrypt(string plainText, string publicKey)
        {
            byte[] encryptedData;
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
            {
                rsa.FromXmlString(publicKey);
                // 将文本转换为UTF8编码的字节数组
                byte[] plainBytes = Encoding.UTF8.GetBytes(plainText);
                // 使用SHA1哈希算法以及Pkcs1填充规则进行加密
                encryptedData = rsa.Encrypt(plainBytes, true);
            }
            return encryptedData;
        }
    }
}