greagregreager.js

let removeDuplicate = (v, i, a) => a.indexOf(v) === i
async function getSymbolsNames (quoteAsset = 'BTC') {
  // exchangeInfo : timezone , serverTime , rateLimits , exchangeFilters , symbols
  // symbolsInfo  : symbol, baseAsset, quoteAsset, status, icebergAllowed, orderTypes, filters
  // orderTypes   : [ 'LIMIT', 'LIMIT_MAKER', 'MARKET', 'STOP_LOSS_LIMIT', 'TAKE_PROFIT_LIMIT' ]
  let exchangeInfo = await client.exchangeInfo()
  let symbolsInfo = exchangeInfo.symbols
  symbolsInfo = symbolsInfo.filter(elem => elem.status === 'TRADING')
  symbolsInfo = symbolsInfo.filter(elem => elem.quoteAsset === quoteAsset)

  let symbols = symbolsInfo.map(elem => elem.symbol)
  let baseAssets = symbolsInfo.map(elem => elem.baseAsset).filter(removeDuplicate)
  let quoteAssets = symbolsInfo.map(elem => elem.quoteAsset).filter(removeDuplicate)
  // TODO understand filters
  // const filters = symbolsInfo.map(elem => elem.filters)

  return new Promise((resolve, reject) => resolve({
    symbols: symbols,
    baseAssets: baseAssets,
    quoteAssets: quoteAssets
  }))
}

async function getSymbolsNames (quoteAsset = 'BTC') {
  const exchangeInfo = await client.exchangeInfo()
  let symbolsInfo = exchangeInfo.symbols
  const symbols = []
  const baseAssets = []
  const quoteAssets = []
  // symbolsInfo = symbolsInfo.filter(elem => elem.status === 'TRADING' && elem.quoteAsset === quoteAsset)


  symbolsInfo.forEach((elem, i) => {
    if (elem.status !== 'TRADING' || elem.quoteAsset !== quoteAsset) {
      return
    }
    symbols.push(elem)
    if (removeDuplicate(elem, i)) {
      baseAssets.push(elem.baseAsset)
      quoteAssets.push(elem.quoteAsset)
    }
  })

  // TODO understand filters
  // const filters = symbolsInfo.map(elem => elem.filters)

  return {
    symbols,
    baseAssets,
    quoteAssets
  }
}

UserSchema.statics.findByEmail = async function findByEmail (email) {
  // do stuff
}