xyz.block.moneyaddress.MoneyAddress.kt Maven / Gradle / Ivy

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package xyz.block.moneyaddress

import web5.sdk.dids.didcore.Service
import xyz.block.moneyaddress.urn.DapUrn

/**
 * A generic representation of a MoneyAddress, without specific details of the currency or protocol.
 *
 * For a more specific representation, see [TypedMoneyAddress].
 */
data class MoneyAddress(
  val id: String,
  val urn: DapUrn,
  val currency: String,
  val protocol: String,
  val pss: String
) {

  override fun toString(): String =
    "MoneyAddress($currency, $protocol, $pss, $id)"

  companion object {
    const val KIND: String = "MoneyAddress"
  }
}

/**
 * Extracts the MoneyAddress objects from a DID Service object.
 *
 * @throws InvalidMoneyAddressException if the service type is not "MoneyAddress".
 * @throws InvalidDapUrnException if the URN is not a valid DAP URN.
 */
fun Service.toMoneyAddresses(): List {
  if (type != MoneyAddress.KIND) {
    throw InvalidMoneyAddressException
  }

  return serviceEndpoint.map { endpoint ->
    DapUrn.parse(endpoint).toMoneyAddress(id)
  }
}

/**
 * Converts a DAP URN to a MoneyAddress.
 */
fun DapUrn.toMoneyAddress(id: String): MoneyAddress =
  MoneyAddress(
    id = id,
    urn = this,
    currency = currency,
    protocol = protocol,
    pss = pss
  )

object InvalidMoneyAddressException : Throwable("Invalid MoneyAddress")