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const Promise = require('bluebird');
const Web3 = require('web3');

const abi = require('./abi.json');
const config = require(process.env['GNC_MINER_CONFIG_PATH'] || './config.json');

const providers = [
  'https://mewapi.musicoin.tw'
];

const web3 = new Web3(new Web3.providers.HttpProvider(providers[1]));

const addrContra = config.ADDR_CONTRACT;
const addresses = {
  // example:
  // 'name': '0x1234...',
};

const contract = new web3.eth.Contract(abi, addrContra);

// https://github.com/uxitten/polyfill/blob/master/string.polyfill.js
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
if (!String.prototype.padStart) {
String.prototype.padStart=function(b,a){b>>=0;a=String(a||" ");if(this.length>b)return String(this);
b-=this.length;b>a.length&&(a+=a.repeat(b/a.length));return a.slice(0,b)+String(this)};String
.prototype.padEnd=function(b,a){b>>=0;a=String(a||" ");if(this.length>b)return String(this);b-=this
.length;b>a.length&&(a+=a.repeat(b/a.length));return String(this)+a.slice(0,b)};
}

let totalSupply = null;

function print(addresses) {
  return Promise.resolve()
  .then(() => {
    return Promise.map(Object.keys(addresses),
      (name) => Promise.all([
        contract.methods.balances(addresses[name]).call(),
        web3.eth.getBalance(addresses[name])
      ])
      .spread((bal, money) => [name, bal, money]),
      {concurrency: 4});
  })
  .then(result => {
    let sum = result.map((arr) => {
      let [name, bal, money] = arr;
      let nameFmted = name.padEnd(5, ' ');
      let balFmted = bal.padStart(5, ' ');
      let moneyFmted = (Math.round(money / 1e13) / 1e5).toFixed(5).padStart(8, ' ');

      console.log(`${nameFmted}: ${balFmted}, $${moneyFmted}`);
      return bal - 0;
    }).reduce((a, b) => (a + b), 0);
    console.log(`Sum: ${sum} (${Math.round(sum / totalSupply * 10000) / 100}%)`);
  });
}

Promise.resolve()
.then(() => {
    return contract.methods.totalSupply().call()
      .then((sup) => {
        console.log(`Total supply = ${sup}`);
        totalSupply = sup;
      });
  })
.then(() => print(addresses))
.then(() => print(addrRivals));