using FlexJobApi.Core.Models.ElectronSignServer.Auths;
using FlexJobApi.Core.Models.ElectronSignServer.Common;
using Furion;
using Furion.HttpRemote;
using Mapster;
using Microsoft.Extensions.Caching.Distributed;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace FlexJobApi.Core
{
    /// <summary>
    /// 电子签资源提供者
    /// </summary>
    public class ElectronSignServerResourceHttpProvider : IResourceHttpProvider
    {
        public async Task<string> SendAsStringAsync(HttpRequestBuilder builder)
        {
            var httpRemoteService = App.GetRequiredService<IHttpRemoteService>();
            builder = WithToken(httpRemoteService, builder);
            var response = await httpRemoteService.SendAsStringAsync(builder);
            try
            {
                var result = response.JsonTo(new
                {
                    Code = 0
                });
                if (result.Code == 401)
                {
                    builder = WithToken(httpRemoteService, builder, true);
                    response = await httpRemoteService.SendAsStringAsync(builder);
                }
            }
            catch { }
            return response;
        }

        private HttpRequestBuilder WithToken(IHttpRemoteService httpRemoteService, HttpRequestBuilder builder, bool recache = false)
        {
            var cacheKey = "ElectronSignServerSystemUserToken";
            var distributedCache = App.GetRequiredService<IDistributedCache>();
            var token = distributedCache.GetString(cacheKey);
            if (token == null || recache)
            {
                var result = httpRemoteService.PostAs<ElectronSignServerResult<IdentityModelTokenCacheItem>>($"{builder.RequestUri.Scheme}://{builder.RequestUri.Authority}/api/Account/GetTokenForWeb", builder =>
                    builder.SetJsonContent(new AccessRequestDto
                    {
                        UserName = App.GetConfig<string>("ElectronSignServer:Account"),
                        UserPassword = App.GetConfig<string>("ElectronSignServer:Password")
                    }));
                if (result.Success)
                {
                    token = new TokenDataModel
                    {
                        AccessToken = result.Result.AccessToken,
                        RefreshToken = result.Result.RefreshToken
                    }.ToJson();
                    distributedCache.SetString(cacheKey, token, new DistributedCacheEntryOptions
                    {
                        AbsoluteExpiration = DateTime.Now.AddMinutes(60 * 23)
                    });
                }
            }
            if (token.IsNotNull())
            {
                var model = token.JsonTo<TokenDataModel>();
                if (model.AccessToken.IsNotNull())
                {
                    builder = builder.WithHeader("Authorization", model.AccessToken);
                }

                if (model.RefreshToken.IsNotNull())
                {
                    builder = builder.WithHeader("X-Authorization", model.RefreshToken);
                }

            }
            return builder;
        }
    }
}