app.js

#!/usr/bin/env node

'use strict';

var os = require('os');
var path = require('path');
var dotenv = require("dotenv");
var fs = require('fs');

var debug = require("debug");
debug.enable("btcexp:app,btcexp:error");

var debugLog = debug("btcexp:app");

var express = require('express');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require("express-session");
var csurf = require("csurf");
var config = require("./app/config.js");
var simpleGit = require('simple-git');
var utils = require("./app/utils.js");
var moment = require("moment");
var Decimal = require('decimal.js');
var bitcoinCore = require("bitcoin-core");
var pug = require("pug");
var momentDurationFormat = require("moment-duration-format");
var coreApi = require("./app/api/coreApi.js");
var coins = require("./app/coins.js");
var request = require("request");
var qrcode = require("qrcode");
var addressApi = require("./app/api/addressApi.js");
var coreApi = require("./app/api/coreApi.js");
var auth = require('./app/auth.js');
var baseRouter = require('./routes/baseRouter');

var crawlerBotUserAgentStrings = [ "Googlebot", "Bingbot", "Slurp", "DuckDuckBot", "Baiduspider", "YandexBot", "Sogou", "Exabot", "facebot", "ia_archiver" ];


var app = express();

app.set('views', path.join(__dirname, 'views'));

app.engine('pug', (path, options, fn) => {
	options.debug = false;
	return pug.__express.call(null, path, options, fn);
});

app.set('view engine', 'pug');

app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(session({
	secret: config.cookieSecret,
	resave: false,
	saveUninitialized: false
}));

app.use(express.static(path.join(__dirname, 'public')));

process.on("unhandledRejection", (reason, p) => {
	debugLog("Unhandled Rejection at: Promise", p, "reason:", reason, "stack:", (reason != null ? reason.stack : "null"));
});

function loadMiningPoolConfigs() {
	global.miningPoolsConfigs = [];

	var miningPoolsConfigDir = path.join(__dirname, "public", "txt", "mining-pools-configs", global.coinConfig.ticker);

	fs.readdir(miningPoolsConfigDir, function(err, files) {
		if (err) {
			utils.logError("3ufhwehe", err, {configDir:miningPoolsConfigDir, desc:"Unable to scan directory"});

			return;
		}

		files.forEach(function(file) {
			var filepath = path.join(miningPoolsConfigDir, file);

			var contents = fs.readFileSync(filepath, 'utf8');

			global.miningPoolsConfigs.push(JSON.parse(contents));
		});
	});

	for (var i = 0; i < global.miningPoolsConfigs.length; i++) {
		for (var x in global.miningPoolsConfigs[i].payout_addresses) {
			if (global.miningPoolsConfigs[i].payout_addresses.hasOwnProperty(x)) {
				global.specialAddresses[x] = {type:"minerPayout", minerInfo:global.miningPoolsConfigs[i].payout_addresses[x]};
			}
		}
	}
}


app.runOnStartup = function() {
	global.config = config;
	global.coinConfig = coins[config.coin];
	global.coinConfigs = coins;

	debugLog(`Running RPC Explorer for ${global.coinConfig.name}`);

	var rpcCred = config.credentials.rpc;
	debugLog(`Connecting via RPC to node at ${rpcCred.host}:${rpcCred.port}`);

	var rpcClientProperties = {
		host: rpcCred.host,
		port: rpcCred.port,
		username: rpcCred.username,
		password: rpcCred.password,
		timeout: rpcCred.timeout
	};

	global.client = new bitcoinCore(rpcClientProperties);

	coreApi.getNetworkInfo().then(function(getnetworkinfo) {
		debugLog(`Connected via RPC to node. Basic info: version=${getnetworkinfo.version}, subversion=${getnetworkinfo.subversion}, protocolversion=${getnetworkinfo.protocolversion}, services=${getnetworkinfo.localservices}`);

	}).catch(function(err) {
		utils.logError("32ugegdfsde", err);
	});

	global.specialAddresses = {};

	loadMiningPoolConfigs();

	if (global.exchangeRates == null) {
		utils.refreshExchangeRates();
	}

	setInterval(utils.refreshExchangeRates, 1800000);
};

app.use(function(req, res, next) {
	req.startTime = Date.now();
	req.startMem = process.memoryUsage().heapUsed;

	next();
});

app.use(function(req, res, next) {
	res.locals.session = req.session;

	if (config.credentials.rpc && req.session.host == null) {
		req.session.host = config.credentials.rpc.host;
		req.session.port = config.credentials.rpc.port;
		req.session.username = config.credentials.rpc.username;
	}

	var userAgent = req.headers['user-agent'];
	for (var i = 0; i < crawlerBotUserAgentStrings.length; i++) {
		if (userAgent.indexOf(crawlerBotUserAgentStrings[i]) != -1) {
			res.locals.crawlerBot = true;
		}
	}

	res.locals.config = global.config;
	res.locals.coinConfig = global.coinConfig;
	
	res.locals.host = req.session.host;
	res.locals.port = req.session.port;

	res.locals.genesisBlockHash = coreApi.getGenesisBlockHash();
	res.locals.genesisCoinbaseTransactionId = coreApi.getGenesisCoinbaseTransactionId();

	res.locals.pageErrors = [];

	if (!req.session.currencyFormatType) {
		var cookieValue = req.cookies['user-setting-currencyFormatType'];

		if (cookieValue) {
			req.session.currencyFormatType = cookieValue;

		} else {
			req.session.currencyFormatType = "";
		}
	}

	if (!req.session.uiTheme) {
		var cookieValue = req.cookies['user-setting-uiTheme'];

		if (cookieValue) {
			req.session.uiTheme = cookieValue;

		} else {
			req.session.uiTheme = "";
		}
	}

	if (!req.session.hideHomepageBanner) {
		var cookieValue = req.cookies['user-setting-hideHomepageBanner'];

		if (cookieValue) {
			req.session.hideHomepageBanner = cookieValue;

		} else {
			req.session.hideHomepageBanner = "false";
		}
	}

	res.locals.currencyFormatType = req.session.currencyFormatType;


	if (!["/", "/connect"].includes(req.originalUrl)) {
		if (utils.redirectToConnectPageIfNeeded(req, res)) {
			return;
		}
	}

	if (req.session.userMessage) {
		res.locals.userMessage = req.session.userMessage;
		
		if (req.session.userMessageType) {
			res.locals.userMessageType = req.session.userMessageType;
			
		} else {
			res.locals.userMessageType = "warning";
		}

		req.session.userMessage = null;
		req.session.userMessageType = null;
	}

	if (req.session.query) {
		res.locals.query = req.session.query;

		req.session.query = null;
	}

	next();
});

app.use(csurf(), (req, res, next) => {
	res.locals.csrfToken = req.csrfToken();
	next();
});

app.use('/', baseRouter);

app.use(function(req, res, next) {
	var err = new Error('Not Found');
	err.status = 404;
	next(err);
});

app.use(function(err, req, res, next) {
	res.status(err.status || 500);
	res.render('error', {
		message: err.message,
		error: {}
	});
});

app.locals.moment = moment;
app.locals.Decimal = Decimal;
app.locals.utils = utils;

module.exports = app;