using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Security.Cryptography;
using System.Threading;
using SteamKit2;

namespace Steambotlogin
{
    class Program
    {
        static SteamClient steamClient;
        static CallbackManager manager;

        static SteamUser steamUser;
        static SteamFriends steamFriends;

        static bool isRunning;

        static string user, pass;
        static string authCode, twoFactorAuth;



        static void Main(string[] args)
        {
            SteamDirectory.Initialize().Wait();
            /*Console.Write("Please enter your username: ");
            user = Console.ReadLine();

            Console.Write("Please enter your password: ");
            pass = Console.ReadLine();
           */
            user = "";
            pass = "";

            steamClient = new SteamClient();

            manager = new CallbackManager(steamClient);

            steamUser = steamClient.GetHandler<SteamUser>();

            steamFriends = steamClient.GetHandler<SteamFriends>();

            manager.Subscribe<SteamClient.ConnectedCallback>(OnConnected);
            manager.Subscribe<SteamClient.DisconnectedCallback>(OnDisconnected);

            manager.Subscribe<SteamUser.LoggedOnCallback>(OnLoggedOn);
            manager.Subscribe<SteamUser.LoggedOffCallback>(OnLoggedOff);
            manager.Subscribe<SteamUser.AccountInfoCallback>(OnAccountInfo);
            manager.Subscribe<SteamUser.UpdateMachineAuthCallback>(OnMachineAuth);
            manager.Subscribe<SteamFriends.FriendMsgCallback>(OnChatMessage);

            isRunning = true;

            Console.WriteLine("Connecting to Steam...");

            SteamDirectory.Initialize().Wait();
            steamClient.Connect();

            while (isRunning)
            {
                manager.RunWaitCallbacks(TimeSpan.FromSeconds(1));
            }
        }

        static void OnAccountInfo(SteamUser.AccountInfoCallback callback)
        {
            steamFriends.SetPersonaState(EPersonaState.Online);
        }

        static void OnConnected(SteamClient.ConnectedCallback callback)
        {
            if (callback.Result != EResult.OK)
            {
                Console.WriteLine("Unable to connect to Steam: {0}", callback.Result);

                isRunning = false;
                return;
            }

            Console.WriteLine("Connected to Steam! Logging in '{0}'...", user);

            byte[] sentryHash = null;
            if (File.Exists("sentry.bin"))
            {
                // if we have a saved sentry file, read and sha-1 hash it
                byte[] sentryFile = File.ReadAllBytes("sentry.bin");
                sentryHash = CryptoHelper.SHAHash(sentryFile);
            }

            steamUser.LogOn(new SteamUser.LogOnDetails
            {
                Username = user,
                Password = pass,

                // in this sample, we pass in an additional authcode
                // this value will be null (which is the default) for our first logon attempt
                AuthCode = authCode,

                // if the account is using 2-factor auth, we'll provide the two factor code instead
                // this will also be null on our first logon attempt
                TwoFactorCode = twoFactorAuth,

                // our subsequent logons use the hash of the sentry file as proof of ownership of the file
                // this will also be null for our first (no authcode) and second (authcode only) logon attempts
                SentryFileHash = sentryHash,
            });
        }

        static void OnDisconnected(SteamClient.DisconnectedCallback callback)
        {
            // after recieving an AccountLogonDenied, we'll be disconnected from steam
            // so after we read an authcode from the user, we need to reconnect to begin the logon flow again

            Console.WriteLine("Disconnected from Steam, reconnecting in 5...");

            Thread.Sleep(TimeSpan.FromSeconds(5));

            steamClient.Connect();
        }

        static void OnLoggedOn(SteamUser.LoggedOnCallback callback)
        {
            bool isSteamGuard = callback.Result == EResult.AccountLogonDenied;
            bool is2FA = callback.Result == EResult.AccountLoginDeniedNeedTwoFactor;

            if (isSteamGuard || is2FA)
            {
                Console.WriteLine("This account is SteamGuard protected!");

                if (is2FA)
                {
                    Console.Write("Please enter your 2 factor auth code from your authenticator app: ");
                    twoFactorAuth = Console.ReadLine();
                }
                else
                {
                    Console.Write("Please enter the auth code sent to the email at {0}: ", callback.EmailDomain);
                    authCode = Console.ReadLine();
                }

                return;
            }

            if (callback.Result != EResult.OK)
            {
                Console.WriteLine("Unable to logon to Steam: {0} / {1}", callback.Result, callback.ExtendedResult);

                isRunning = false;
                return;
            }

            Console.WriteLine("Successfully logged on!");

            // at this point, we'd be able to perform actions on Steam
        }

        static void OnLoggedOff(SteamUser.LoggedOffCallback callback)
        {
            Console.WriteLine("Logged off of Steam: {0}", callback.Result);
        }

        static void OnMachineAuth(SteamUser.UpdateMachineAuthCallback callback)
        {
            Console.WriteLine("Updating sentryfile...");

            // write out our sentry file
            // ideally we'd want to write to the filename specified in the callback
            // but then this sample would require more code to find the correct sentry file to read during logon
            // for the sake of simplicity, we'll just use "sentry.bin"

            int fileSize;
            byte[] sentryHash;
            using (var fs = File.Open("sentry.bin", FileMode.OpenOrCreate, FileAccess.ReadWrite))
            {
                fs.Seek(callback.Offset, SeekOrigin.Begin);
                fs.Write(callback.Data, 0, callback.BytesToWrite);
                fileSize = (int)fs.Length;

                fs.Seek(0, SeekOrigin.Begin);
                using (var sha = new SHA1CryptoServiceProvider())
                {
                    sentryHash = sha.ComputeHash(fs);
                }
            }

            // inform the steam servers that we're accepting this sentry file
            steamUser.SendMachineAuthResponse(new SteamUser.MachineAuthDetails
            {
                JobID = callback.JobID,

                FileName = callback.FileName,

                BytesWritten = callback.BytesToWrite,
                FileSize = fileSize,
                Offset = callback.Offset,

                Result = EResult.OK,
                LastError = 0,

                OneTimePassword = callback.OneTimePassword,

                SentryFileHash = sentryHash,
            });

            Console.WriteLine("Done!");
        }
        static void OnChatMessage(SteamFriends.FriendMsgCallback callback)
        {
            if (callback.EntryType == EChatEntryType.ChatMsg)
            {
                if(callback.Message.Length > 1)
                {
                    if(callback.Message.Remove(1) == "!")
                    {
                        string command = callback.Message;
                        if(callback.Message.Contains(" "))
                        {
                            command = callback.Message.Remove(callback.Message.IndexOf(" "))
                        }
                        switch(command)
                        {
                            case command = "!help"
                                break;
                        }
                    }
                }

                steamFriends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "Hello, this is a bot");
            }
        }
        public static string[] seperate(int number, char seperator, string thestring)
        {
            string[] returned = new string[4]

            int i = 0;

            int error = 0;

            int length = thestring.length;

            foreach

                if(int != number)
            {
                if(error > lenghth || number > 5)
                {
                    returned[0] = "-1";
                    return returned;
                }
                else if(char == seperator)
                {
                    returned[i] = thestring.Remove(thestring.IndexOf(c));
                    thestring = thestring.Remove(0, thestring.IndexOf(c) + 1);
                }
            }
        }
    }
}