142 lines
3.2 KiB
JavaScript
142 lines
3.2 KiB
JavaScript
const http = require('http');
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const https = require('https');
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const LimitedArray = require('limitedarray');
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const trend = require('trend');
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const logger = require('log4js').getLogger('btc');
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let btcCache = {};
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let balanceCache = {};
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let history = new LimitedArray(288); // one days worth in 5 minute chunks
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function getBitcoin () {
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logger.info('>> getting bitcoin');
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function btcQuery (callback) {
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const options = {
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host: 'api.coindesk.com',
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// port: 80,
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path: '/v1/bpi/currentprice.json',
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// method: 'GET',
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headers: {
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/* 'Content-Type': 'application/json',
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'Content-Length': Buffer.byteLength(data)*/
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}
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};
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try {
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http.request(options).on('response', response => {
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let data = '';
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response.on('data', chunk => {
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data += chunk;
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});
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response.on('end', () => {
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let cData = {};
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try {
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cData = JSON.parse(data);
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} catch (e) {
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logger.error(e);
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} finally{
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callback(cData);
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}
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});
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response.on('error', e => {
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logger.error(e);
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});
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}).end();
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} catch (e) {
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logger.error(e);
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}
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}
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btcQuery(a => {
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// logger.info(a);
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logger.info('Got btc data. Storing it');
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btcCache = a;
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history.push(a.bpi.USD.rate_float);
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btcCache.history = history.get();
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btcCache.trend = trend(btcCache.history, {avgPoints: 12});
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GLOBAL.lastcheck = new Date();
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});
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}
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function getBalance() {
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logger.info('>> getting Balance');
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function balanceQuery (callback, r) {
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try {
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https.get('https://blockexplorer.com/api/addr/18sLVW5Aswp2KWLr4hMFZsuSPtvAauFiif').on('response', response => {
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let data = '';
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response.on('data', chunk => {
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data += chunk;
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});
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response.on('end', () => {
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let cData = {};
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try {
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cData = JSON.parse(data);
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} catch (e) {
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logger.error(e);
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} finally{
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callback(cData, r);
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}
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});
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response.on('error', e => {
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logger.error(e);
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});
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}).end();
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} catch (e) {
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logger.error(e);
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}
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}
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balanceQuery(a => {
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logger.info('Got balance data. Storing it');
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balanceCache = a;
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});
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}
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exports.doBTC = (req, res) => {
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logger.info('Bitcoin request');
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify(btcCache));
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};
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exports.doBalance = (req, res) => {
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logger.info('Balance request');
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify(balanceCache));
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};
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function updateBitcoin() {
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logger.warn('updateBitcoin');
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getBitcoin();
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const now = new Date();
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const mod = 300000 - (now.getTime() % 300000);
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let btcupdateFn = () => {
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updateBitcoin();
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};
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setTimeout(btcupdateFn.bind(this), mod + 10);
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}
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function updateBalance() {
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logger.warn('updateBalance');
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getBalance();
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const now = new Date();
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const mod = 3.6e+6 - (now.getTime() % 3.6e+6);
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let balanceUpdateFn = () => {
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updateBalance();
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};
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setTimeout(balanceUpdateFn.bind(this), mod + 10);
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}
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updateBitcoin();
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updateBalance();
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