@faast/tron-payments/src/helpers.ts

Library to assist in processing tron payments, such as deriving addresses and sweeping funds

import TronWeb from 'tronweb'
import { DECIMAL_PLACES } from './constants'
import { createUnitConverters, Payport } from '@faast/payments-common'
import { isNil } from '@faast/ts-common'

const {
  toMainDenominationBigNumber,
  toMainDenominationString,
  toMainDenominationNumber,
  toBaseDenominationBigNumber,
  toBaseDenominationString,
  toBaseDenominationNumber,
} = createUnitConverters(DECIMAL_PLACES)

export {
  toMainDenominationBigNumber,
  toMainDenominationString,
  toMainDenominationNumber,
  toBaseDenominationBigNumber,
  toBaseDenominationString,
  toBaseDenominationNumber,
}

export function isValidXprv(xprv: string): boolean {
  return xprv.startsWith('xprv')
}

export function isValidXpub(xpub: string): boolean {
  return xpub.startsWith('xpub')
}

export function isValidAddress(address: string): boolean {
  return TronWeb.isAddress(address)
}

export function isValidExtraId(extraId: string): boolean {
  return false
}

export function isValidPayport(payport: Payport): boolean {
  if (!Payport.is(payport)) {
    return false
  }
  const { address, extraId } = payport
  return isValidAddress(address) && (isNil(extraId) ? true : isValidExtraId(extraId))
}

export function isValidPrivateKey(privateKey: string): boolean {
  try {
    privateKeyToAddress(privateKey)
    return true
  } catch (e) {
    return false
  }
}

export function privateKeyToAddress(privateKey: string): string {
  const address = TronWeb.address.fromPrivateKey(privateKey)
  if (isValidAddress(address)) {
    return address
  } else {
    throw new Error('Validation failed for address derived from private key')
  }
}