using System;
using System.Collections.Generic;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using ZXing.Aztec.Internal;

namespace HTEXMark
{
    public static class HttpClientHelper
    {
        public static async Task<(HttpClient httpClient,string AuthorizationToken,bool ok)> CheckToken (string AuthorizationToken,string domian ,string X_Auth_Authtoken, HttpClient httpClient)
        {
            bool ok = false;
            long now =DateTimeOffset.Now.ToUnixTimeSeconds();
            var jwt = new JwtSecurityToken(AuthorizationToken);
            if (!httpClient.DefaultRequestHeaders.Contains("X-Auth-Authtoken"))
            {
                httpClient.DefaultRequestHeaders.Add("X-Auth-Authtoken", X_Auth_Authtoken);
            }
            if (jwt.Payload.Expiration.HasValue  && jwt.Payload.Expiration.Value>now)
            {
                if (httpClient.DefaultRequestHeaders.Contains("Authorization"))
                {
                    httpClient.DefaultRequestHeaders.Remove("Authorization");
                }
                httpClient.DefaultRequestHeaders.Add("Authorization",$"Bearer {AuthorizationToken}" );
                ok = true;
            }
            else {
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
                string url = $"https://{domian}/hita/refresh-access-token";
                var  response =  await httpClient.PostAsJsonAsync(url, new Dictionary<string, string> { { "refresh-token", AuthorizationToken } });
                if (response.IsSuccessStatusCode) {
                    string content = await response.Content.ReadAsStringAsync();
                    JsonElement json = JsonSerializer.Deserialize<JsonElement>(content);
                    if (json.TryGetProperty("code", out JsonElement _code)&& $"{_code}".Equals("200")  && json.TryGetProperty("access_token", out JsonElement _access_token)) {
                        AuthorizationToken= _access_token.GetString();
                        if (httpClient.DefaultRequestHeaders.Contains("Authorization")) {
                            httpClient.DefaultRequestHeaders.Remove("Authorization");
                        }
                        httpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {AuthorizationToken}");
                        ok = true;
                    }
                }
            }
            return (httpClient, AuthorizationToken,ok);
        }
    }
}