import createHash from "create-hash"
import { Ecanna, BN, Buffer } from "ecanna/dist"
import {
  TKNVMAPI,
  KeyChain as TKNVMKeyChain,
  UTXOSet,
  UnsignedTx,
  Tx
} from "ecanna/dist/apis/tknvm"
import {
  KeyChain as StakeVMKeyChain,
  StakeVMAPI
} from "ecanna/dist/apis/stakevm"
import {
  PrivateKeyPrefix,
  DefaultLocalGenesisPrivateKey,
  Defaults,
  UnixNow,
  SerializedType
} from "ecanna/dist/utils"
import { Serialization } from "ecanna/dist/utils"

const serialization: Serialization = Serialization.getInstance()
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 stkchain: StakeVMAPI = ecanna.STKChain()
const xKeychain: TKNVMKeyChain = tknchain.keyChain()
const pKeychain: StakeVMKeyChain = stkchain.keyChain()
const privKey: string = `${PrivateKeyPrefix}${DefaultLocalGenesisPrivateKey}`
xKeychain.importKey(privKey)
pKeychain.importKey(privKey)
const xAddressStrings: string[] = tknchain.keyChain().getAddressStrings()
const pAddressStrings: string[] = stkchain.keyChain().getAddressStrings()
const stkChainBlockchainID: string =
  Defaults.network[networkID].STK.blockchainID
const ecnaAssetID: string = Defaults.network[networkID].TKN.ecnaAssetID
const locktime: BN = new BN(0)
const asOf: BN = UnixNow()
const memo: Buffer = Buffer.from(
  "TKNVM utility method buildExportTx to export ECNA to the STK-Chain from the TKN-Chain"
)
const fee: BN = tknchain.getDefaultTxFee()
const cb58: SerializedType = "cb58"

const main = async (): Promise<any> => {
  const tknvmUTXOResponse: any = await tknchain.getUTXOs(xAddressStrings)
  const utxoSet: UTXOSet = tknvmUTXOResponse.utxos
  const getBalanceResponse: any = await tknchain.getBalance(
    xAddressStrings[0],
    ecnaAssetID
  )
  const balance: BN = new BN(getBalanceResponse.balance)
  const amount: BN = balance.sub(fee)

  const unsignedTx: UnsignedTx = await tknchain.buildExportTx(
    utxoSet,
    amount,
    stkChainBlockchainID,
    pAddressStrings,
    xAddressStrings,
    xAddressStrings,
    memo,
    asOf,
    locktime
  )

  const tx: Tx = unsignedTx.sign(xKeychain)
  const buffer: Buffer = Buffer.from(
    createHash("sha256").update(tx.toBuffer()).digest().buffer
  )
  const txid: string = serialization.bufferToType(buffer, cb58)
  console.log(txid)
  // APfkX9NduHkZtghRpQASNZJjLut4ZAkVhkTGeazQerLSRa36t
}

main()