const { app, shell } = require('electron')
const { formatCurrency } = require('@coingecko/cryptoformat')

const fetchData = async url => {
  try {
    const response = await fetch(url)

    if (response.status !== 200) {
      return console.log('Non-200 response: ' + response.status) // eslint-disable-line
    }

    const json = await response.json()
    if (!json) return

    return json
  } catch (error) {
    console.log('Error parsing json:' + error) // eslint-disable-line
  }
}

const isFiat = currency => currency === 'eur' || currency === 'usd'

const openUrl = url => {
  shell.openExternal(url)
}

const rgbaToHex = color => {
  const r = color.substr(0, 2)
  const g = color.substr(2, 2)
  const b = color.substr(4, 2)
  // const a = color.substr(6, 2)

  return '#' + r + g + b
}

const locale =
  typeof navigator !== 'undefined' ? navigator.language : () => app.getLocale()

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat
const numberFormatter = value =>
  new Intl.NumberFormat(locale, {
    minimumFractionDigits: 0,
    maximumFractionDigits: 4
  }).format(value)

const formatOcean = value => {
  const numberformatted = new Intl.NumberFormat(locale, {
    minimumFractionDigits: 0,
    maximumFractionDigits: 4,
    style: 'currency',
    currency: 'EUR' // fake currency symbol to replace later
  }).format(value)

  return numberformatted.replace(/EUR/, 'Ọ').replace(/€/, 'Ọ')
}

const formatFiat = (value, currency) => {
  const numberformatted = new Intl.NumberFormat(locale, {
    minimumFractionDigits: 0,
    maximumFractionDigits: 4,
    style: 'currency',
    currency: currency.toUpperCase()
  }).format(value)

  return numberformatted
}

const cryptoFormatter = (value, currency) => {
  if (currency === 'ocean') {
    return formatOcean(value)
  } else if (isFiat(currency)) {
    return formatFiat(value, currency)
  } else {
    return formatCurrency(value, currency.toUpperCase(), locale)
      .replace(/BTC/, 'Ƀ')
      .replace(/ETH/, 'Ξ')
  }
}

module.exports = {
  openUrl,
  rgbaToHex,
  locale,
  numberFormatter,
  cryptoFormatter,
  fetchData
}