252 lines
8.8 KiB
JavaScript
252 lines
8.8 KiB
JavaScript
var jp = require('jsonpath');
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var moment = require('moment');
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var numeral = require('numeral');
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var request = require('request');
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var options = {
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defaultCurrency: 'USD',
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// supported currencies and api steps to arrive at the final value
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currencies: {
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USD: { steps: ['LBCBTC', 'BTCUSD'], format: '$0,0.00', sign:'$' },
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BTC: { steps: ['LBCBTC'], format: 'BTC 0,0.00000000', sign:'BTC' },
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ETH: { steps: ['LBCETH'], format: 'ETH 0,0.00000000', sign: 'ETH' },
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GBP: { steps: ['LBCBTC', 'BTCGBP'], format: '£0,0.00', sign: '£' },
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EUR: { steps: ['LBCEUR'], format: '€0,0.00', sign: '€' }
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},
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// api steps
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api: {
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LBCBTC: { url: 'https://bittrex.com/api/v1.1/public/getticker?market=BTC-LBC', path: '$.result.Bid' },
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BTCUSD: { url: 'https://blockchain.info/ticker', path: '$.USD.buy' },
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BTCGBP: { url: 'https://blockchain.info/ticker', path: '$.GBP.buy' },
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LBCETH: { url: 'https://api.coinmarketcap.com/v1/ticker/library-credit/?convert=eth', path: '$[0].price_eth' },
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LBCEUR: { url: 'https://api.coinmarketcap.com/v1/ticker/library-credit/?convert=eur', path: '$[0].price_eur' }
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},
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// display date/time format
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dtFormat: 'Do MMM YYYY h:mma [UTC]',
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// refresh rate in milliseconds to retrieve a new price (default to 10 minutes)
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refreshTime: 600000
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};
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// store the last retrieved rate
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var cachedRates = {};
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var mktChannel;
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// !price {currency}
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// !price {currency} {amount}
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var command = '!stats';
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module.exports={
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command: command,
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init: init,
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respond: respond
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};
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function init(channel_) {
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mktChannel = channel_;
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if (!channel_) {
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console.log('No market and trading channel. Statbot will only respond to DMs.');
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}
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var currencies = Object.keys(options.currencies);
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for (var i = 0; i < currencies.length; i++) {
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cachedRates[currencies[i]] = { rate: 0, time: null };
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}
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}
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var globalSlackParams = {};
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function respond(bot, data) {
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var channel = data.channel,
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words = data.text.trim().split(' ').filter( function(n){return n !== "";} );
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if (words[0] !== command || (channel != mktChannel && !channel.startsWith('D'))) {
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// if the received message isn't starting with the trigger,
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// or the channel is not the market-and-trading channel, nor sandbox, nor a DM -> ignore
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return;
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}
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var currency = /*(words.length > 1) ? words[2].toUpperCase() :*/ options.defaultCurrency;
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var amount = /*(words.length > 2) ? parseFloat(words[2], 10) :*/ 1;
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var showHelp = (isNaN(amount)) || (Object.keys(options.currencies).indexOf(currency) === -1);
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var moveToBotSandbox = showHelp && channel !== mktChannel && !channel.startsWith("D");
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if (moveToBotSandbox) {
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bot.postMessage(channel, 'Please use PM to talk to bot.', globalSlackParams);
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return;
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}
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if (showHelp) {
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doHelp(bot, channel);
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} else {
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doSteps(bot, channel, 'USD', amount);
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doSteps(bot, channel, 'EUR', amount);
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doSteps(bot, channel, 'GBP', amount);
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doSteps(bot, channel, 'ETH', amount);
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doSteps(bot, channel, 'BTC', amount);
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setTimeout(function() { marketstats(bot,channel); }, 250);
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//marketstats(bot,channel);
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//volume24(bot,channel); can't get this part to work, someone help me fix - i think it's because 24h_volume_usd starts with number
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}
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}
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function doHelp(bot, channel) {
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var message =
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'`' + command + '`: show the price of 1 LBC in ' + options.defaultCurrency + '\n' +
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'`' + command + ' help`: this message\n' +
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'`' + command + ' CURRENCY`: show the price of 1 LBC in CURRENCY. Supported values for CURRENCY are *btc* and *usd* (case-insensitive)\n' +
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'`' + command + ' CURRENCY AMOUNT`: show the price of AMOUNT LBC in CURRENCY\n';
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if (!channel.startsWith("D")) {
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message =
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'*USE PM FOR HELP*\n' +
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message +
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'\n' +
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'*Everyone will see what I say. Send me a Direct Message if you want to interact privately.*\n' +
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'If I\'m not responding in some channel, you can invite me by @mentioning me.\n';
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}
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bot.postMessage(channel, message, globalSlackParams);
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}
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function formatMessage(amount, rate, option) {
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var cur = option.sign;
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var value = rate.rate * amount;
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if (option.sign == '$' || option.sign == '£' || option.sign == '€'){
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return '*' + numeral(amount).format('0,0[.][00000000]') + ' LBC = ' + cur +' '+ value.toFixed(2) + '*';
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}
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else {
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return '*' + numeral(amount).format('0,0[.][00000000]') + ' LBC = ' + numeral(value).format('0,0[.][00000000]') + ' ' + cur + '*';
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}
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}
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function formaty(n, decimals, currency) {
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n = parseFloat(n);
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return currency + " " + n.toFixed(2).replace(/(\d)(?=(\d{3})+\.)/g, "$1,");
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}
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function doSteps(bot, channel, currency, amount) {
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var option = options.currencies[currency];
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var shouldReload = true;
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if (cachedRates[currency]) {
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var cache = cachedRates[currency];
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shouldReload = cache.time === null || moment().diff(cache.time) >= options.refreshTime;
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if (!shouldReload) {
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var message = formatMessage(amount, cache, option);
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bot.postMessage(channel, message, {icon_emoji: ':lbr:'});
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}
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}
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if (shouldReload) {
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// copy the steps array
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var steps = [];
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for (var i = 0; i < option.steps.length; i++) {
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steps.push(option.steps[i]);
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}
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processSteps(bot, channel, currency, 0, amount, steps, option);
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}
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}
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function marketstats(bot,channel) {
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var statsurl='https://api.coinmarketcap.com/v1/ticker/library-credit/';
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request.get(statsurl, function(error, response, body) {
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if (error) {
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bot.postMessage(channel, err.message ? err.message : 'The request could not be completed at this time. Please try again later.');
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return;
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}
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var marketcap = 0;
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try {
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marketcap = jp.query(JSON.parse(body), '$[0].market_cap_usd');
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if (Array.isArray(marketcap) && marketcap.length > 0) {
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marketcap = marketcap[0];
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marketcap = formaty(marketcap,2,'$')
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}
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} catch (ignored) {
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// invalid response or pair rate
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}
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var statmsg = '*'+'Marketcap: '+marketcap+'*\n';
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bot.postMessage(channel, statmsg, {icon_emoji: ':lbr:'});
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});
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}
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function volume24(bot,channel) {
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var statsurl='https://api.coinmarketcap.com/v1/ticker/library-credit/';
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request.get(statsurl, function(error, response, body) {
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if (error) {
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bot.postMessage(channel, err.message ? err.message : 'The request could not be completed at this time. Please try again later.');
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return;
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}
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var volume24 = 0;
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try {
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volume24 = jp.query(JSON.parse(body),'$[0].24h_volume_usd');
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if (Array.isArray(volume24) && volume24.length > 0) {
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volume24 = volume24[0];
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}
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} catch (ignored) {
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// invalid response or pair rate
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}
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var statmsg = '*'+'Volume: $'+volume24+'*\n';
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bot.postMessage(channel, statmsg, {icon_emoji: ':lbr:'});
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});
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}
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function processSteps(bot, channel, currency, rate, amount, steps, option) {
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if (steps.length > 0) {
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var pairName = steps[0];
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if (!options.api[pairName]) {
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bot.postMessage(channel, 'There was a configuration error. ' + pairName + ' pair was not found.');
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return;
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}
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var pair = options.api[pairName];
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request.get(pair.url, function(error, response, body) {
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if (error) {
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bot.postMessage(channel, err.message ? err.message : 'The request could not be completed at this time. Please try again later.');
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return;
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}
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var pairRate = 0;
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try {
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pairRate = jp.query(JSON.parse(body), pair.path);
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if (Array.isArray(pairRate) && pairRate.length > 0) {
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pairRate = pairRate[0];
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}
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} catch (ignored) {
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// invalid response or pair rate
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}
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if (pairRate > 0) {
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rate = (rate === 0) ? pairRate : rate * pairRate;
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steps.shift();
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if (steps.length > 0) {
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processSteps(bot, channel, currency, rate, amount, steps, option);
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return;
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}
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// final step, cache and then response
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var result = { rate: rate, time: moment() };
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cachedRates[currency] = result;
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bot.postMessage(channel, formatMessage(amount, result, option), {icon_emoji: ':bulb:'});
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} else {
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bot.postMessage(channel, 'The rate returned for the ' + pairName + ' pair was invalid.');
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}
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});
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}
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}
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