using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Net.Http.Json;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Options;

namespace Win_in.Sfs.Scp.WebApi.XmlHost
{
    public class TokenService : ITokenService
    {
        private readonly IConfiguration _configuration;
        private readonly RemoteAuthenticationOptions _options;

        public TokenService(IConfiguration configuration, IOptions<RemoteAuthenticationOptions> options)
        {
            _configuration = configuration;
            _options = options.Value;
        }

        public async Task<BaererToken> GetToken()
        {
            var baseUrl = _configuration["RemoteServices:Default:BaseUrl"];
            const string routeString = "connect/token";
            var client = new HttpClient();
            client.BaseAddress = new Uri(baseUrl);
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            var content = new FormUrlEncodedContent(new[]
            {
                new KeyValuePair<string, string>("client_id",_options.client_id),
                new KeyValuePair<string, string>("client_secret",_options.client_secret),
                new KeyValuePair<string, string>("grant_type",_options.grant_type),
                new KeyValuePair<string, string>("username",_options.username),
                new KeyValuePair<string, string>("password",_options.password),
            });

            var response = await client.PostAsync(routeString, content);
            response.EnsureSuccessStatusCode();

            var dto = await response.Content.ReadFromJsonAsync<BaererToken>();
            return dto;

        }


    }
}