@0xsequence/anypay-sdk/src/preconditions.ts

SDK for Anypay functionality

import type { IntentPrecondition } from "@0xsequence/anypay-api"

export function findPreconditionAddress(
  preconditions: IntentPrecondition[],
): string {
  console.log(
    "Finding precondition address from:",
    JSON.stringify(preconditions, null, 2),
  )

  const preconditionTypes = ["erc20-balance", "native-balance"] as const

  for (const type of preconditionTypes) {
    const precondition = preconditions.find(
      (p) => p.type === type && p.data?.address,
    )
    if (precondition) {
      console.log(
        `Found ${type} precondition with address:`,
        precondition.data.address,
      )
      return precondition.data.address
    }
  }

  const msg = `N/A (No ${preconditionTypes.join(" or ")} precondition with address found)`
  console.log(msg)
  return msg
}

export function findFirstPreconditionForChainId(
  preconditions: IntentPrecondition[],
  chainId: number,
): IntentPrecondition | null {
  const precondition = preconditions.find(
    (p) =>
      (p.type === "erc20-balance" || p.type === "native-balance") &&
      p.chainId === chainId?.toString(),
  )
  return precondition ?? null
}