/ address 0
                coinType 0(btc) -- account 0 -- change 0  
              /                                         \ address 1
root -- BIP44 
              \
                coinType 60(eth) -- account 0 -- change 1 -- address 0
                          

const hdAddress = require("hd-address")  
// Generate mnemocie seed base58
const mnemocie = hdAddress.mnemocie.getRandomMnemocie()
const seed = hdAddress.seed.getRandomSeed()
const base58 = hdAddress.base58.getRandomBase58()

// Create Hd wallet
const hdWallet =new hdAddress.mnemocie(mnemocie)
const hdWallet =new hdAddress.seed(seed)
const hdWallet =new hdAddress.base58(base58)

// Generate keypair
hdWallet.getHdPath(coinTypeCode, index, account = 0, change = 0) 
hdWallet.getKeyPair(coinTypeCode, index, account, change) 
hdWallet.getCoinKeyPair(coin, index, account, change) 

// ChainCode
hdWallet.getChainCodeByPath(path)
hdWallet.getPublicKeyByChainCode(parentPub, chainCode, path)
hdWallet.getPrivateKeyByChainCode(parentPri, chainCode, path)

const hdAddress = require("hd-address")  
// Create a wallet with Coin Info
let hd = hdAddress.HD(mnemonic,hdAddress.keyType.mnemonic,pwd)
let hd = hdAddress.HD(seed,hdAddress.keyType.seed) 
let hd = hdAddress.HD(base58,hdAddress.keyType.base58) 

// Get coin info
hd.BTC.getCoinKeyPair(index, account, change)
hd.ETH.getCoinAddressKeyPair(index, account, change)
hd.TRX.getAddress(index, account, change)
hd.LTC.getAddressByPath(hdPath) 
hd.BCH.getAddressByPrivateKey(privateKey)
hd.BTC_TEST.getAddressByPublicKey(publicKey)

    const mnemonic = hdAddress.mnemocie.getRandomMnemonic()    
    let hd = hdAddress.HD(mnemonic,hdAddress.keyType.mnemonic)  

    const {seed} =hdAddress.mnemocie.getRandomSeed() 
    let hd = hdAddress.HD(seed,hdAddress.keyType.seed)  

    const {base58} =hdAddress.mnemocie.getRandomBase58() 
    let hd = hdAddress.HD(base58,hdAddress.keyType.base58) //v3.1

    let hdIndex=6677
    let btcAddr =  hd.BTC.getAddress(hdIndex)
    console.log("BTC",btcAddr.address)
    let ethAddr =  hd.ETH.getAddress(hdIndex)
    console.log("ETH",ethAddr.address)
    let trxAddr =  hd.TRX.getAddress(hdIndex)
    console.log("TRX",trxAddr.address)

    let hdpath = "m/0'/1/1" // account/change/index
    let {address, pub, pri, path} = hd.BTC.getAddressByPath(hdpath)
    console.log(address, pub, pri, path) 

  let {address, path, pri, pub} =  hd.BTC.getCoinAddressKeyPair(hdIndex)
  console.log(address, path)

  let priAddr =  hd.BTC.getAddressByPrivateKey(pri)
  console.assert(priAddr.address == address)

  let pubAddr =  hd.BTC.getAddressByPublicKey(pub)
  console.assert(pubAddr.address == address)

    let wordList = hdAddress.mnemonic.wordLists.CN
    let strength = hdAddress.mnemonic.strength.high 
    let cnMnemo = hdAddress.mnemonic.getRandomMnemonic(strength, wordList)
    let isMnemo = hdAddress.mnemonic.validateMnemonic(cnMnemo) 
    console.log(isMnemo)

    let strength = hdAddress.base58.strength.high 
    let base58 = hdAddress.mnemonic.getRandombase58(strength)

const AddressClass =  require("hd-address").AddressClass //v3.0

module.exports = class EosAddress extends AddressClass {
    constructor(hd) {
        let coin = "EOS"
        super(hd, coin);
    }

    getAddress(index) {
        console.log(this.coin, "implement  getAddress method")
    }

    getAddressByPrivateKey(privateKey) {
        console.log(this.coin, "implement  getAddressByPrivateKey method")
    }

    getAddressByPublicKey(privateKey) {
        console.log(this.coin, "implement  getAddressByPublicKey method")
    }
}

    let hdPath = "m/44'/0'/1'"
    let {pub, chainCode} = hd.wallet.getChainCodeByPath(hdPath)
    console.log(hdPath, "chainCode", chainCode.toString("hex"),"\n")

    // pubKey + chainCode +childPath =>  address
    let childPath = "m/1/" + hdIndex
    let child = hd.wallet.getPublicKeyByChainCode(pub, chainCode, childPath)
    let childAaddr = hd.BTC.getAddressByPublicKey(child.pub)
    console.log(childPath, child.pub.toString("hex"),"BTC Address",childAaddr.address)

    //path =>  address
    let testPath = "m/44'/0'/1'/1/" + hdIndex
    let test = hd.wallet.getChainCodeByPath(testPath)
    let testAaddr = hd.BTC.getAddressByPublicKey(test.pub)
    console.log(testPath, test.pub.toString("hex"),"BTC Address",testAaddr.address)

  mocha