using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;

namespace BackupPipefy.Infrastructure.Services
{
    public class PipefyClient
    {
        private readonly HttpClient _httpClient;
        private readonly PipefyTokenService _tokenService;

        public PipefyClient(PipefyTokenService tokenService, bool useProxy = false)
        {            
            if (useProxy)
            {
                var handler = new HttpClientHandler
                {
                    Proxy = new WebProxy("127.0.0.1", 8888),
                    UseProxy = true,
                    ServerCertificateCustomValidationCallback = (HttpRequestMessage req, X509Certificate2? cert, X509Chain? chain, SslPolicyErrors errors) => true
                };

                _httpClient = new HttpClient(handler);
            }
            else
            {
                _httpClient = new HttpClient();
            }

            _tokenService = tokenService;
        }

        public async Task<string> GetCardsAsync(int pipeId, DateTime lastUpdated)
        {
            var token = await _tokenService.GetTokenAsync();
            _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
            
            // Montar GraphQL e enviar request
            // Exemplo simplificado:
            var query = new
            {
                query = @"{  allCards(pipeId: 303718996, after: \""WyIxLjAiLCI1MC4wIiw4MTgzNjgwNzhd\""){    edges{      node{        id        title        emailMessagingAddress      }    }    pageInfo{      endCursor      hasNextPage    }  }}"
            };

            var content = new StringContent(System.Text.Json.JsonSerializer.Serialize(query));
            content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");

            var response = await _httpClient.PostAsync("https://api.pipefy.com/graphql", content);
            response.EnsureSuccessStatusCode();

            return await response.Content.ReadAsStringAsync();
        }
    }
}