jam/src/utils.ts

const BTC_FORMATTER = new Intl.NumberFormat('en-US', {
  minimumIntegerDigits: 1,
  minimumFractionDigits: 8,
})

const SATS_FORMATTER = new Intl.NumberFormat('en-US', {
  minimumIntegerDigits: 1,
  minimumFractionDigits: 0,
})

export const BTC = 'BTC'
export const SATS = 'sats'

export const walletDisplayName = (name: string) => name.replace('.jmdat', '')

export const displayDate = (string: string) => new Date(string).toLocaleString()

export const btcToSats = (value: string) => Math.round(parseFloat(value) * 100000000)

export const satsToBtc = (value: string) => parseInt(value, 10) / 100000000

export const formatBtc = (value: number) => {
  const decimalPoint = '\u002E'
  const nbHalfSpace = '\u202F'

  const numberString = BTC_FORMATTER.format(value)

  const [integerPart, fractionalPart] = numberString.split(decimalPoint)

  const formattedFractionalPart = fractionalPart
    .split('')
    .map((char, idx) => (idx === 2 || idx === 5 ? `${nbHalfSpace}${char}` : char))
    .join('')

  return integerPart + decimalPoint + formattedFractionalPart
}

export const formatSats = (value: number) => {
  return SATS_FORMATTER.format(value)
}