using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Linq;
using System.Net;
using SteamKit2;
using System.IO;
using System.Threading;

namespace _1703_Bot
{
    class Program
    {
        static bool is_running = false;
        static string user_name, pass;
        static string auth_code;

        static SteamClient steam_client;
        static CallbackManager callback_manager;
        static SteamUser steam_user;
        static SteamFriends steam_friends;

        static void Main(string[] args)
        {
            if (!File.Exists("chat.txt"))
            {
                File.Create("chat.txt").Close();
                File.WriteAllText("chat.txt", "Hello | <MSG> Hello. Use '!help' to view commands.");
            }
            if (!File.Exists("admin.txt"))
            {
                File.Create("admin.txt").Close();
                File.WriteAllText("admin.txt", "76561198053054477");
            }

            Console.Title = "1703 Bot Console";
            Console.Write("Username: ");
            user_name = Console.ReadLine();
            Console.Write("Password: ");
            pass = Console.ReadLine();

            SteamLogIn();
        }

        static void SteamLogIn()
        {
            steam_client = new SteamClient();
            callback_manager = new CallbackManager(steam_client);
            steam_user = steam_client.GetHandler<SteamUser>();
            steam_friends = steam_client.GetHandler<SteamFriends>();

            callback_manager.Subscribe<SteamClient.ConnectedCallback>(OnConnected);
            callback_manager.Subscribe<SteamClient.DisconnectedCallback>(OnDisconnected);
            callback_manager.Subscribe<SteamUser.LoggedOnCallback>(OnLoggedOn);
            callback_manager.Subscribe<SteamUser.LoggedOffCallback>(OnLoggedOff);
            callback_manager.Subscribe<SteamUser.AccountInfoCallback>(OnAccountInfo);
            callback_manager.Subscribe<SteamFriends.FriendMsgCallback>(OnChatMessage);
            callback_manager.Subscribe<SteamFriends.FriendsListCallback>(OnFriendsList);
            callback_manager.Subscribe<SteamUser.UpdateMachineAuthCallback>(OnMachineAuth);

            is_running = true;

            Console.Write("Connecting to Steam...");
            steam_client.Connect();

            while (is_running)
            {
                callback_manager.RunWaitCallbacks(TimeSpan.FromSeconds(1));
            }
            Console.ReadKey();
        }

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

            byte[] sentry_hash = null;
            if (File.Exists("sentry.bin"))
            {
                byte[] sentry_file = File.ReadAllBytes("sentry.bin");
                sentry_hash = CryptoHelper.SHAHash(sentry_file);
            }

            steam_user.LogOn(new SteamUser.LogOnDetails
            {
                Username = user_name,
                Password = pass,
                AuthCode = auth_code,
                SentryFileHash = sentry_hash,
            });
        }

        static void OnLoggedOn(SteamUser.LoggedOnCallback callback)
        {
            if (callback.Result == EResult.AccountLogonDenied)
            {
                Console.WriteLine("This account is SteamGuard protected.");
                Console.WriteLine("Please enter the authorization code sent ot the email at {0}: ", callback.EmailDomain);
                auth_code = Console.ReadLine();
                return;
            }

            if (callback.Result != EResult.OK)
            {
                Console.WriteLine("Unable to log in to Steam: {0}\n", callback.Result);
                is_running = false;
                return;
            }
            Console.WriteLine("{0} Successfully Logged in to Steam!", user_name);
        }

        static void OnMachineAuth(SteamUser.UpdateMachineAuthCallback callback)
        {
            Console.WriteLine("Updating Sentryfile...");
            byte[] sentry_hash = CryptoHelper.SHAHash(callback.Data);
            File.WriteAllBytes("sentry.bin", callback.Data);
            steam_user.SendMachineAuthResponse(new SteamUser.MachineAuthDetails
            {
                JobID = callback.JobID,
                FileName = callback.FileName,
                BytesWritten = callback.BytesToWrite,
                FileSize = callback.Data.Length,
                Offset = callback.Offset,
                Result = EResult.OK,
                LastError = 0,
                OneTimePassword = callback.OneTimePassword,
                SentryFileHash = sentry_hash,
            });
            Console.WriteLine("Done!");
        }

        static void OnDisconnected(SteamClient.DisconnectedCallback callback)
        {
            Console.WriteLine("\n{0} Disconnected from Steam, reconnecting...\n", user_name);
            Thread.Sleep(TimeSpan.FromSeconds(5));
            steam_client.Connect();
        }

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

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

        static void OnFriendsList(SteamFriends.FriendsListCallback callback)
        {
            Thread.Sleep(2500);
            foreach (var friend in callback.FriendList)
            {
                if (friend.Relationship == EFriendRelationship.RequestRecipient)
                {
                    steam_friends.AddFriend(friend.SteamID);
                    Thread.Sleep(500);
                    steam_friends.SendChatMessage(friend.SteamID, EChatEntryType.ChatMsg, "<MSG> hello, I am 1703 bot. I will notify you of any 1703 outfit events. Use '!help' to view my commands.");
                }
            }
        }

        static void OnChatMessage(SteamFriends.FriendMsgCallback callback)
        {
            string[] args;
            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)
                        {
                            #region send
                            case "!send":
                                if (!isBotAdmin(callback.Sender))
                                    break;

                                args = seperate(2, ' ', callback.Message);
                                Console.WriteLine("!send '" + args[1] + "' '" + args[2] + "'Command Recieved: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                                if (args[0] == "-1")
                                {
                                    steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<ERROR> Incorrect Syntax. Use '!send [friend] [message]'.");
                                    return;
                                }
                                for (int i = 0; i < steam_friends.GetFriendCount(); i++)
                                {
                                    SteamID friend = steam_friends.GetFriendByIndex(i);
                                    if (steam_friends.GetFriendPersonaName(friend).ToLower().Contains(args[1].ToLower()))
                                    {
                                        steam_friends.SendChatMessage(friend, EChatEntryType.ChatMsg, "<MSG> " + args[2]);
                                    }
                                }
                                break;
                            #endregion
                            #region broadcast
                            case "!broadcast":
                                if (!isBotAdmin(callback.Sender))
                                    break;

                                args = seperate(1, ' ', callback.Message);
                                Console.WriteLine("!broadcast '" + args[1] + "' Command Recieved: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                                if (args[0] == "-1")
                                {
                                    steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<ERROR> Inccorect syntax. Use '!broadcast [message]'.");
                                }
                                for (int i = 0; i < steam_friends.GetFriendCount(); i++)
                                {
                                    SteamID friend = steam_friends.GetFriendByIndex(i);
                                    if (friend > 0)
                                    {
                                        steam_friends.SendChatMessage(friend, EChatEntryType.ChatMsg, "<BROADCAST> " + args[1]);
                                    }
                                }
                                break;
                            #endregion
                            #region friends
                            case "!friends":
                                Console.WriteLine("!friends Command Recieved: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> List of bot friends: ");
                                for (int i = 0; i < steam_friends.GetFriendCount(); i++)
                                {
                                    SteamID friend = steam_friends.GetFriendByIndex(i);
                                    steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> Friend: " + steam_friends.GetFriendPersonaName(friend) + " State: " + steam_friends.GetFriendPersonaState(friend));
                                }
                                break;
                            #endregion
                            #region help
                            case "!help":
                                Console.Write("!help Command Recieved: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> List of User Commands:");
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> '!help' : Lists all Available Commands");
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> '!friends' : Lists all the friends of the 1703 Bot");
                                if (!isBotAdmin(callback.Sender))
                                {
                                    break;
                                }
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> List of Admin Commands:");
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> '!broadcast [message]' : Broadcasts a message to all 1703 Bot Friends");
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> '!send [friend] [message]' : sends a message to specified 1703 Bot Friend");
                                steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<INFO> '!pester [friend] [message] [message ammount]' : sends a message to a specified 1703 Bot Friend a specified number of times");
                                break;
                            #endregion
                            #region pester
                            //case "!pester":
                            //    int counter = 0;
                            //    if (!isBotAdmin(callback.Sender))
                            //        break;
                            //    args = seperate(3, ' ', callback.Message);
                            //    Console.WriteLine("!pester '" + args[1] + "' '" + args[2] + "'Command Recieved: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                            //    if (args[0] == "-1")
                            //    {
                            //        steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, "<ERROR> Incorrect Syntax. Use '!pester [friend] [message'.");
                            //        return;
                            //    }
                            //    for (int i = 0; i < steam_friends.GetFriendCount(); i++)
                            //    {
                            //        SteamID friend = steam_friends.GetFriendByIndex(i);
                            //        if (steam_friends.GetFriendPersonaName(friend).ToLower().Contains(args[1].ToLower()))
                            //        {
                            //            while (counter < int.Parse(args[3]))
                            //            {
                            //                steam_friends.SendChatMessage(friend, EChatEntryType.ChatMsg, "<MSG> " + args[2]);
                            //                counter++;
                            //            }
                            //        }
                            //    }
                            //    break;
                            #endregion
                            #region online
                                WebClient web_client = new System.Net.WebClient();
                                web_client.DownloadFile("http://census.daybreakgames.com/s:17034223270/xml/get/ps2:v2/outfit_member/?outfit_id=37530159341123962&c:limit=100&c:resolve=online_status&c:show=character_id&c:resolve=character_name", "member_list.xml");
                                XmlDocument doc = new XmlDocument();
                                doc.Load("member_list.xml");
                                XmlNodeList member_nodes = doc.GetElementsByTagName("outfit_member");
                                foreach (XmlNode member_node in member_nodes)
                                {
                                    XmlAttribute character_id = member_node.Attributes["character_id"];
                                    XmlAttribute online_status = member_node.Attributes["online_status"];
                                    XmlNode character_name_node = member_node["character"];
                                    string character_name_string = character_name_node.InnerXml;
                                    string remove_1 = ("<name first=");
                                    character_name_string = character_name_string.Replace(remove_1, "");
                                    string[] character_name_string_temp = character_name_string.Split(' ');
                                    character_name_string_temp[1] = ("");
                                    character_name_string_temp[2] = ("");
                                    character_name_string = string.Join("", character_name_string_temp);
                                    int online_status_true = System.Convert.ToInt32(online_status.Value);
                                    if (online_status_true > 0)
                                    {
                                        Console.WriteLine("Character_ID: " + character_id.Value);
                                        Console.WriteLine("Character_Name: " + character_name_string);
                                        Console.WriteLine("Online_Status: " + online_status.Value);
                                        Console.WriteLine("");
                                    }
                                }
                                break;
                                #endregion

                        }
                    }
                }
                string rLine;
                string trimmed = callback.Message;
                char[] trim = { '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '-', '_', '=', '+', '[', ']', '{', '}', '\\', '|', ';', ':', '"', '\'', ',', '<', '.', '>', '/', '?' };
                for (int i = 0; i < 30; i++)
                {
                    trimmed = trimmed.Replace(trim[i].ToString(), "");
                }

                StreamReader stream_reader = new StreamReader("chat.txt");

                while ((rLine = stream_reader.ReadLine()) != null)
                {
                    string text = rLine.Remove(rLine.IndexOf('|') - 1);
                    string response = rLine.Remove(0, rLine.IndexOf('|') + 2);

                    if (callback.Message.Contains(text))
                    {
                        Console.WriteLine("Chat reply Sent: User: " + steam_friends.GetFriendPersonaName(callback.Sender));
                        steam_friends.SendChatMessage(callback.Sender, EChatEntryType.ChatMsg, response);
                        stream_reader.Close();
                        return;
                    }
                }
            }
        }

        public static bool isBotAdmin(SteamID sid)
        {
            string[] lines = null;
            try
            {
                lines = File.ReadAllLines("admin.txt");
                foreach (string i in lines)
                {
                    if (sid.ConvertToUInt64() == Convert.ToUInt64(i))
                    {
                        return true;
                    }
                }
                steam_friends.SendChatMessage(sid, EChatEntryType.ChatMsg, "<ERROR> You do not have sufficient permission to use that command. If this is an error, and you are an admin, please contact D3i (Dei) or Infilze (Koolbade)");
                Console.WriteLine(steam_friends.GetFriendPersonaName(sid) + " attemted to use an administrator command while not an administrator.");
                return false;
            }

                catch (Exception e)
            {
                Console.WriteLine(e.Message);
                return false;
            }
        }

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