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 !== "";
        });
      var currency1 = words[0].toUpperCase();
      if (words[1] == undefined) {
        var currency2 = "BTC";
      } else {
        var currency2 = words[1].toUpperCase();
      }
      if (words[2] == undefined) {
        var amount = "1";
      } else {
        if (getValidatedAmount(words[2]) === null) {
          msg.reply("Please specify a number for <amount>");
          return;
        }
        var amount = words[2].toUpperCase();
      }
    } else {
      var currency1 = "BTC";
      var currency2 = "USD";
      var 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 {
              var price = Number(response.body[currency2]);
              var newprice = price * amount;
              var 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;
    }
  }
};