@rhino.fi/client-js/src/lib/dvf/createOrderMetaData.js

const validateProps = require('../validators/validateProps')
const validateAssertions = require('../validators/validateAssertions')

const starkSignedOrder = async (dvf, starkPrivateKey, starkMessage) => {
  validateAssertions(dvf, { starkPrivateKey })

  const { starkKeyPair, starkPublicKey } = await dvf.stark.createKeyPair(
    starkPrivateKey,
  )

  const starkSignature = dvf.stark.sign(starkKeyPair, starkMessage)

  return {
    starkPublicKey,
    starkSignature,
  }
}

module.exports = async (dvf, orderData) => {
  validateProps(dvf, ['amount', 'symbol', 'price'], orderData)

  const { starkOrder, starkMessage } = await dvf.stark.createOrder(orderData)
  let starkPublicKey, starkSignature
  if (orderData.starkPrivateKey) {
    ;({ starkPublicKey, starkSignature } = await starkSignedOrder(
      dvf,
      orderData.starkPrivateKey,
      starkMessage,
    ))
  } else if (orderData.ledgerPath) {
    ;({ starkPublicKey, starkSignature } = await dvf
      .stark
      .ledger
      .createSignedOrder(orderData.ledgerPath, starkOrder, { starkMessage }))
  }

  return {
    starkPublicKey,
    starkOrder,
    starkMessage,
    starkSignature,
  }
}