hodl_vault.ts

import { BITBOX } from "bitbox-sdk"
import { ECPair, HDNode } from "bitcoincashjs-lib"
import { Contract, Instance } from "cashscript"
import * as path from "path"
import { PriceOracle } from "./src/routes/v1/PriceOracle"

run()
export async function run(): Promise<void> {
  // Initialise BITBOX
  const network: string = "testnet"
  const bitbox: BITBOX = new BITBOX({
    restURL: "https://trest.bitcoin.com/v2/"
  })

  // Initialise HD node and owner's keypair
  const rootSeed: Buffer = bitbox.Mnemonic.toSeed("")
  const hdNode: HDNode = bitbox.HDNode.fromSeed(rootSeed, network)
  const owner: ECPair = bitbox.HDNode.toKeyPair(bitbox.HDNode.derive(hdNode, 0))

  // Initialise price oracle with a keypair
  const oracle: PriceOracle = new PriceOracle(
    bitbox.HDNode.toKeyPair(bitbox.HDNode.derive(hdNode, 1))
  )

  // Compile and instantiate HODL Vault
  const HodlVault: Contract = Contract.fromCashFile(
    path.join(__dirname, "./src/routes/v1/contracts/hodl_vault.cash"),
    "testnet"
  )
  const instance: Instance = HodlVault.new(
    bitbox.ECPair.toPublicKey(owner),
    bitbox.ECPair.toPublicKey(oracle.keypair),
    597000,
    30000
  )

  // Get contract balance & output address + balance
  const contractBalance: number = await instance.getBalance()
  console.log("contract address:", instance.address)
  console.log("contract balance:", contractBalance)

  // Produce new oracle message and signature
  // const oracleMessage: Buffer = oracle.createMessage(597000, 30000)
  // const oracleSignature: Buffer = oracle.signMessage(oracleMessage)

  // // Spend from the vault
  // const tx: TxnDetailsResult = await instance.functions
  //   .spend(new Sig(owner, 0x01), oracleSignature, oracleMessage)
  //   .send(instance.address, 1000)

  // console.log(tx)
}