using System.Text;
using Dlhis.Middle.Response;
using Kurisu.AspNetCore.UnifyResultAndValidation;
using Kurisu.RemoteCall.Abstractions;
using Microsoft.Extensions.Caching.Memory;
using Newtonsoft.Json;

namespace Dlhis.Middle.Api
{
    public class FaceBearerTokenHandler : IAuthTokenHandler
    {
        /// <inheritdoc />
        public string GetToken(IServiceProvider serviceProvider)
        {
            var cache = serviceProvider.GetService<IMemoryCache>();
            if (cache.TryGetValue("token", out string token)) return "Bearer " + token;

            var httpClient = serviceProvider.GetService<IHttpClientFactory>().CreateClient("face");
            var hostName = serviceProvider.GetService<IConfiguration>().GetSection("HostName").Value;

            var tokenResponse = httpClient.PostAsync($"https://{hostName}/api/user/oauth2/clientgrant", new StringContent(JsonConvert.SerializeObject(new
            {
                ClientId = "e509c2aaa98e300c",
                ClientSecret = "6184d8979fc48105"
            }), Encoding.UTF8, "application/json")).GetAwaiter().GetResult();

            var tokenJson = tokenResponse.Content.ReadAsStringAsync().GetAwaiter().GetResult();
            var tokenInfo = JsonConvert.DeserializeObject<DefaultApiResult<TokenResponse>>(tokenJson);

            token = tokenInfo.Data.AccessToken;

            cache.Set("token", token, TimeSpan.FromSeconds(tokenInfo.Data.Expires));

            return token;
        }
    }
}