#bravotrader Possibile trovare criptovalute da XX% in anticipo? Vediamo!

⊳

Come promesso ecco i risultati della cripto sfida per trovare il miglior trader di criptovalute. Grazie a tutti, in particolare chi ha avuto il coraggio di partecipare.

Codice aggiornato

import fetch from 'node-fetch'
console.log('Crypto stats! by @luigi-tecnologo')

export async function getListOfSymbolWithPerc(list) {
  let listPerc = []
  for (const symbol in list) {
    const data = await getSymbolWithPerc(symbol)
  }
  return listPerc
}

export async function getSymbol(symbol, ts) {
  const initialTs = Math.round(ts / 1000)
  const res = await fetch(`https://min-api.cryptocompare.com/data/pricehistorical?fsym=${symbol}&tsyms=BTC,USD,EUR&ts=${initialTs}&extraParams=your_app_name`)
  const json = await res.json()
  try {
    console.log(`${ts} ${symbol} ${json[symbol].EUR}`)
  } catch(e){
    console.log('err ', symbol, e)
  }

  return {
    symbol: symbol,
    EUR: (json[symbol].EUR)
  }
}

export async function getSymbolWithPerc(symbol, tsNew, tsOld) {
  const resNew = await getSymbol(symbol, tsNew)
  const resOld = await getSymbol(symbol, tsOld)

  const vn = resNew.EUR
  const vv = resOld.EUR

  const perc = Math.round((vn - vv) / vv * 100)
  console.log(`${symbol} `, perc)
  return {
    ...resNew,
    EURold: vv,
    perc,
  }
}

const main = async () => {

  const response = await fetch('https://api.coinmarketcap.com/v1/ticker/')
  const allCoins = await response.json()

  let cryptos = allCoins.slice(0, 300).map(coin => coin.symbol)
  // NOTE: symbol conversion for cryptocompare API
  cryptos = cryptos
    .map(x => x === 'MIOTA' ? 'IOT' : x)
    .map(x => x === 'WAX' ? null : x)
    .map(x => x === 'ACT' ? 'ACT*' : x)    
    .filter(x => x !== null)

  const arr = []
  for (const symbol of cryptos) {
    const data = await getSymbolWithPerc(symbol, new Date('2018-01-10').valueOf(), new Date('2018-01-09').valueOf())
    arr.push(data)
  }
  const sorted = arr.filter((e) => Number.isFinite(e.perc))
    .sort((a, b) => {
      return (a.perc > b.perc) ? -1 : 1
    })
    .slice(0,100)

  console.log("The winner is: \n", sorted)
}

// no in test!!
main()

Installazione

Richiede NodeJS installato e l'esecuzione dei seguenti comandi

sudo npm install -g npx
npm install

npx babel-node cryptostats.js