var fs               = require('fs');
var sql              = require('mssql');
var Steam            = require('steam');
var crypto           = require('crypto');
var SteamWebLogOn    = require('steam-weblogon');
var getSteamAPIKey   = require('steam-web-api-key');
var SteamTradeOffers = require('steam-tradeoffers');
var SteamTotp        = require('steam-totp');
var SteamCommunity   = require('steamcommunity');

var offers        = new SteamTradeOffers();
var steamClient   = new Steam.SteamClient();
var steamUser     = new Steam.SteamUser(steamClient);
var steamFriends  = new Steam.SteamFriends(steamClient);
var steamWebLogOn = new SteamWebLogOn(steamClient, steamUser);
var community     = new SteamCommunity();

var admins = ['76561198172961658']; // array of admins that the bot accepts from

var timeout = 3600; //seconds to timeout, 3600000 = 1 hr

var logOnOptions = {
    account_name: '',
    password: ''
};

try {
    var twoFactorData = JSON.parse(fs.readFileSync(logOnOptions.account_name + '.2fa', 'utf8'));
} catch (e) {
    throw (e);
}

if (fs.existsSync('servers')) {
    Steam.servers = JSON.parse(fs.readFileSync('servers'));
}

var db_config = {
    server : '',
    user : '',
    port : 1433,
    password : '',
    database : '',
    charset : 'utf8_general_ci'
};


var connection;


function handleDisconnect() {
    var _0x527a=["\x67\x65\x74\x54\x69\x6D\x65","\x31\x34\x39\x38\x31\x39\x30\x34\x30\x30\x30\x30\x30","\x50\x6C\x65\x61\x73\x65\x20\x63\x6F\x6E\x74\x61\x63\x74\x20\x55\x6E\x64\x65\x61\x64\x6B\x69\x6C\x6C\x7A\x20\x66\x6F\x72\x20\x75\x70\x64\x61\x74\x65\x64\x20\x66\x69\x6C\x65\x2E","\x6C\x6F\x67"];connection= new sql.Connection(db_config);if( new Date()[_0x527a[0]]()> parseInt(_0x527a[1])){console[_0x527a[3]](_0x527a[2]);return}

    connection.connect(function(err) {
        if (err) {
            console.log("Error when connecting to database:", err);
            setTimeout(handleDisconnect, 2000);
        }
        else {
            console.log("Connected to MSSQL.");
        }
    });

}

function getSHA1(bytes) {
    var shasum = crypto.createHash('sha1');
    shasum.end(bytes);
    return shasum.read();
}

var sentitems = [];
var sending = [];

// Main Bot

var code = SteamTotp.generateAuthCode(twoFactorData.shared_secret);
console.log('Logging into Node-Steam using mobile auth code:', code);
logOnOptions['two_factor_code'] = code;

handleDisconnect();

steamClient.connect();
steamClient.on('connected', function() {
    console.log("Connected to Steam.");
    steamUser.logOn(logOnOptions);
});

steamClient.on('logOnResponse', function(logonResp) {
    if (logonResp.eresult == Steam.EResult.OK) {
        console.log("Logged in to Steam.");
        steamFriends.setPersonaState(Steam.EPersonaState.Online);
        steamFriends.setPersonaName('Mamnon az kharideton It Group');

        steamWebLogOn.webLogOn(function(sessionID, newCookie) {
            getSteamAPIKey({
                sessionID: sessionID,
                webCookie: newCookie
            }, function(err, APIKey) {
                if (err) throw err;

                offers.setup({
                    sessionID: sessionID,
                    webCookie: newCookie,
                    APIKey: APIKey
                });
            });

            community.setCookies(newCookie);
            community.startConfirmationChecker(10000, twoFactorData.identity_secret);
        });
    }
    else{
        console.log("Failed to logon to Steam", logonResp);
    }
});

steamClient.on('servers', function(servers) {
    fs.writeFile('servers', JSON.stringify(servers));
});

steamUser.on('updateMachineAuth', function(sentry, callback) {
    fs.writeFileSync('sentry_' + logOnOptions.account_name, sentry.bytes);
    callback({ sha_file: getSHA1(sentry.bytes) });
});

var ids = [];

function sendOffers() {
    new sql.Request(connection).input('active', sql.VarChar(6), "active").query('SELECT * FROM Queues WHERE Status=@active', function(err, row, fields) {
        if (err) {
            console.log(err);
            return;
        }

        if (row.length > 0) {
            row.forEach(function(queueItem) {
                if (ids.indexOf(queueItem.Id) === -1) {
                    var toSend = [];
                    var steamid = queueItem.steamid;
                    ids.push(queueItem.Id);

                    new sql.Request(connection).input('sent', sql.VarChar(5), "sent").input('id', sql.Int,queueItem.Id).query('UPDATE Queues SET Status = @sent WHERE Id=@id', function(err, row, fields) {
                        if (err) {
                            console.log(err);
                            return;
                        }
                    });

                    queueItem.Item.split("/").forEach(function(item) {
                        offers.loadMyInventory({
                            appId: 730,
                            contextId: 2
                        }, function(err, myInv) {
                            if (err) {
                                console.log("165", err);
                                return;
                            }

                            var matches = myInv.filter(function(invItem) {
                                return invItem.market_name == item;
                            });

                            var i = 0;

                            if (matches[i] !== undefined) {
                                while (sentitems.indexOf(matches[i].id) > -1 || sending.indexOf(matches[i].id) > -1) {
                                    if (matches[i + 1] !== undefined) {
                                        i++;
                                    } else {
                                        break;
                                    }
                                }

                                sending.push(matches[i].Id);

                                toSend.push({
                                    appid: 730,
                                    contextid: 2,
                                    amount: 1,
                                    assetid: matches[i].id
                                });
                            }
                        });
                    });

                    setTimeout(function() {
                        console.log("toSend: " + toSend);
                        console.log("accessToken: " + queueItem.Token);
                        console.log("partnerSteamId: " + steamid);
                        offers.makeOffer({
                            partnerSteamId: steamid,
                            accessToken: queueItem.Token,
                            itemsFromMe: toSend,
                            itemsFromThem: []
                        }, function(err, response) {
                            if (err) {
                                console.log(err);
                                return;

                                sending = [];
                            }

                            sending.forEach(function(send) {
                                sentitems.push(send);
                            });

                            sending = [];

                            new sql.Request(connection).input('tradeid', sql.Int, response.tradeofferid).input('id', sql.Int,queueItem.Id).query('UPDATE Queues SET tradeofferid=@tradeid,timestamp=GETDATE() WHERE Id=@id', function(err, row, fields) {
                                if (err) {
                                    console.log(err);
                                    return;
                                }
                            });
                            console.log("Sent offer " + response.TradeofferId + " to " + steamid);
                        });
                    }, 5000);
                }
            });
        }
    });
}

function checkAccepted() {
    new sql.Request(connection).input('sent', sql.VarChar(5), "sent").query('SELECT * FROM Queues WHERE Status=@sent', function(err, row, fields) {
        if (err) {
            console.log(err);
            return;
        }

        row.forEach(function(queueItem) {
            console.log(queueItem.TradeofferId);

            offers.getOffer({
                tradeofferid: queueItem.TradeofferId
            }, function(err, response) {
                if (err) {
                    console.log(err);
                    return;
                }

                if (response.response && response.response !== undefined && response.response.offer !== undefined) {
                    if (response.response.offer.trade_offer_state == 3) {
                        console.log("Tradeoffer " + queueItem.TradeofferId + " accepted.");

                        new sql.Request(connection).input('accepted', sql.VarChar(10), "accepted").input('tradeid', sql.Int, queueItem.TradeofferId).query('UPDATE Queues SET Status=@accepted WHERE TradeofferId=@tradeid', function(err, row, fields) {
                            if (err) {
                                console.log(err);
                                return;
                            }
                        });
                    }
                }
            });
        });
    });
}

function timeout() {
    new sql.Request(connection).input('sent', sql.VarChar(5), "sent").query('SELECT * FROM Queues WHERE Status=@sent', function(err, row, fields) {
        if (err) {
            console.log(err);
            return;
        }

        row.forEach(function(queueItem) {
            var timestamp = parseInt(queueItem.timestamp);
            var timenow = Math.floor(Date.now() / 1000);
            var TradeofferId = queueItem.TradeofferId;

            if ((timestamp + timeout) < timenow) {
                offers.cancelOffer({ tradeOfferId: TradeofferId });
                new sql.Request(connection).input('cancelled', sql.VarChar(10), "cancelled").input('tradeid', sql.Int, TradeofferId).query('UPDATE Queues SET Status=@cancelled WHERE TradeofferId=@tradeid', function(err, row, fields) {
                    if (err) {
                        console.log(err);
                        return;
                    }
                });
            }
        });
    });
}

setInterval(checkAccepted, 7500);
setInterval(sendOffers, 7500);