import { Ecanna, BN, Buffer } from "ecanna/dist"
import {
  TKNVMAPI,
  KeyChain as TKNVMKeyChain,
  UTXOSet,
  UnsignedTx,
  Tx
} from "ecanna/dist/apis/tknvm"
import { GetUTXOsResponse } from "ecanna/dist/apis/tknvm/interfaces"
import { KeyChain as EVMKeyChain, EVMAPI } from "ecanna/dist/apis/evm"
import {
  PrivateKeyPrefix,
  DefaultLocalGenesisPrivateKey,
  Defaults,
  UnixNow
} from "ecanna/dist/utils"

const ip: string = "localhost"
const port: number = 9650
const protocol: string = "http"
const networkID: number = 1337
const ecanna: Ecanna = new Ecanna(ip, port, protocol, networkID)
const tknchain: TKNVMAPI = ecanna.TKNChain()
const evmchain: EVMAPI = ecanna.EVMChain()
const xKeychain: TKNVMKeyChain = tknchain.keyChain()
const cKeychain: EVMKeyChain = evmchain.keyChain()
const privKey: string = `${PrivateKeyPrefix}${DefaultLocalGenesisPrivateKey}`
xKeychain.importKey(privKey)
cKeychain.importKey(privKey)
const xAddressStrings: string[] = tknchain.keyChain().getAddressStrings()
const cAddressStrings: string[] = evmchain.keyChain().getAddressStrings()
const evmChainBlockchainID: string =
  Defaults.network[networkID].EVM.blockchainID
const locktime: BN = new BN(0)
const asOf: BN = UnixNow()
const memo: Buffer = Buffer.from(
  "TKNVM utility method buildExportTx to export ANT to the EVM-Chain from the TKN-Chain"
)

const main = async (): Promise<any> => {
  const tknvmUTXOResponse: GetUTXOsResponse = await tknchain.getUTXOs(
    xAddressStrings
  )
  const utxoSet: UTXOSet = tknvmUTXOResponse.utxos
  const amount: BN = new BN(350)
  const threshold: number = 1
  const assetID: string = "Ycg5QzddNwe3ebfFXhoGUDnWgC6GE88QRakRnn9dp3nGwqCwD"

  const unsignedTx: UnsignedTx = await tknchain.buildExportTx(
    utxoSet,
    amount,
    evmChainBlockchainID,
    cAddressStrings,
    xAddressStrings,
    xAddressStrings,
    memo,
    asOf,
    locktime,
    threshold,
    assetID
  )

  const tx: Tx = unsignedTx.sign(xKeychain)
  const txid: string = await tknchain.issueTx(tx)
  console.log(`Success! TXID: ${txid}`)
}

main()