lbry-wunderbot/bot/modules/altprice.js

let needle = require('needle');
let hasPriceBotChannels = require('../helpers.js').hasPriceBotChannels;
let inPrivate = require('../helpers.js').inPrivate;
let config = require('config');
let ChannelID = config.get('pricebot').mainchannel;

exports.commands = ['altprice'];

exports.altprice = {
  usage: '<coin> <fiat/coin> <amount>',
  description: 'display price of specified alt coin from crypto compare\n**Example:** *!altprice ETH USD 100*',
  process: function(bot, msg, suffix) {
    let dt = new Date();
    let timestamp = dt.toUTCString();
    if (!hasPriceBotChannels(msg) && !inPrivate(msg)) {
      msg.channel.send('Please use <#' + ChannelID + '> or DMs to talk to price bot.');
      return;
    }
    if (suffix !== '') {
      words = suffix
        .trim()
        .split(' ')
        .filter(function(n) {
          return n !== '';
        });
      let currency1 = words[0].toUpperCase();
      if (words[1] == undefined) {
        let currency2 = 'BTC';
      } else {
        let currency2 = words[1].toUpperCase();
      }
      if (words[2] == undefined) {
        let amount = '1';
      } else {
        if (getValidatedAmount(words[2]) === null) {
          msg.reply('Please specify a number for <amount>');
          return;
        }
        let amount = words[2].toUpperCase();
      }
    } else {
      let currency1 = 'BTC';
      let currency2 = 'USD';
      let amount = '1';
    }
    needle.get('https://min-api.cryptocompare.com/data/all/coinlist', function(error, response) {
      if (error || response.statusCode !== 200) {
        msg.channel.send('coinmarketcap API is not available');
      } else {
        if (!response.body.Data.hasOwnProperty(currency1)) {
          msg.channel.send('Invalid Alt Coin');
          return;
        }
        needle.get('https://min-api.cryptocompare.com/data/price?fsym=' + currency1 + '&tsyms=' + currency2, function(error, response) {
          if (error || response.statusCode !== 200) {
            msg.channel.send('coinmarketcap API is not available');
          } else {
            let price = Number(response.body[currency2]);
            let newprice = price * amount;
            let message = amount + ' ' + currency1 + ' = ' + newprice.toFixed(8) + ' ' + currency2 + '\n' + '*Updated: ' + timestamp + '*';
            msg.channel.send(message);
          }
        });
      }
    });
    function getValidatedAmount(amount) {
      amount = amount.trim();
      return amount.match(/^[0-9]+(\.[0-9]+)?$/) ? amount : null;
    }
  }
};