using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.IO;
using System.Net.Http;
using Newtonsoft.Json.Linq;
using System.Text.RegularExpressions;

namespace Pokemap {
    class Program {

        static bool _debug = true;

        const string API_URL = "https://pgorelease.nianticlabs.com/plfe/rpc";
        const string LOGIN_URL = "https://sso.pokemon.com/sso/login?service=https%3A%2F%2Fsso.pokemon.com%2Fsso%2Foauth2.0%2FcallbackAuthorize";
        const string LOGIN_OAUTH = "https://sso.pokemon.com/sso/oauth2.0/accessToken";

        static void Main(string[] args) {

            Console.WriteLine("Enter Username");
            string username = Console.ReadLine();

            if (username == "default") {
                login_ptc();
            }
            else {
                Console.WriteLine("Enter Password");
                string password = Console.ReadLine();
                login_ptc(username, password);
            }
            Console.ReadLine();
        }

        static string login_ptc(string username = "kingske007", string password = "secret") {
            Console.WriteLine("[!] login for: {0}", username);
            string token = "";
            using (var clientHandler = new HttpClientHandler()) {
                clientHandler.AllowAutoRedirect = false;
                using (var client = new HttpClient(clientHandler)) {
                    client.DefaultRequestHeaders.Add("User-Agent", "niantic");
                    var r = client.GetAsync(LOGIN_URL).Result.Content.ReadAsStringAsync().Result;
                    var jdata = JObject.Parse(r);
                    var data = new[]
                    {
                        new KeyValuePair<string, string>("lt", (string)jdata["lt"]),
                        new KeyValuePair<string, string>("execution", (string)jdata["execution"]),
                        new KeyValuePair<string, string>("_eventId", "submit"),
                        new KeyValuePair<string, string>("username", username),
                        new KeyValuePair<string, string>("password", password),
                    };
                    var result = client.PostAsync(LOGIN_URL, new FormUrlEncodedContent(data)).Result;
                    if (result.Headers.Location == null)
                        return null;
                    var location = result.Headers.Location.ToString();
                    var r1 = result.Content.ReadAsStringAsync().Result;

                    string ticket = null;
                    try { ticket = new Regex(".*ticket=").Split(location)[1]; }
                    catch {
                        if (_debug)
                            Console.WriteLine(r1);
                        return null;
                    }

                    var data1 = new[]
                    {
                        new KeyValuePair<string, string>("client_id", "mobile-app_pokemon-go"),
                        new KeyValuePair<string, string>("redirect_uri", "https://www.nianticlabs.com/pokemongo/error"),
                        new KeyValuePair<string, string>("client_secret", "w8ScCUXJQc6kXKw8FiOhd8Fixzht18Dq3PEVkUCP5ZPxtgyWsbTvWHFLm2wNY0JR"),
                        new KeyValuePair<string, string>("grant_type", "refresh_token"),
                        new KeyValuePair<string, string>("code", ticket),
                    };
                    var r2 = client.PostAsync(LOGIN_OAUTH, new FormUrlEncodedContent(data1)).Result.Content.ReadAsStringAsync().Result;
                    var access_token = new Regex("&expires.*").Split(r2)[0];
                    access_token = new Regex(".*access_token=").Split(access_token)[1];
                    token = access_token;
                    Console.WriteLine("Received acces token: " + token);
                }
            }
            return token;
        }
    }
    public class LoginResponseData {
        public string lt;
        public string execution;
    }

    public class LoginRequestData {
        public string lt, execution, _eventId = "submit", username, password;
    }
}