// root seed buffer
let rootSeed = BITBOX.Mnemonic.toSeed(mnemonic);

// master HDNode
let masterHDNode = BITBOX.HDNode.fromSeed(rootSeed);

// instance of transaction builder
let transactionBuilder = new BITBOX.TransactionBuilder('bitcoincash')

// amount of satoshis at vout
let originalAmount = 1969;

// txid
let txid = "c8e66ce653f6fda41bd7b4b32a215ee08ab9240f53d0686838a8d6c6125ffa7c";

// add input txid, vout index and amount of satoshis
transactionBuilder.addInput(txid, 0)

// encode #BCHForEveryone as a buffer
let buf = new Buffer('xxxxcxxxx');
console.log("buf"+buf);
// encode w/ OP_RETURN
let data = BITBOX.Script.encode([
 BITBOX.Script.opcodes.OP_RETURN,
 Buffer.from('6d02', 'hex'),
 Buffer.from('My first memo message using OP_RETURN to write to the blockchain.')
])

// get size of tx to calculate fee
let byteCount = BITBOX.BitcoinCash.getByteCount({ P2PKH: 1 }, { P2PKH: 4 });

// calculate fee @ 1 sat/B
let sendAmount = originalAmount - byteCount;

// add cash address output
transactionBuilder.addOutput("1LmqnQWgr581NS5X9nLn1TZgogTbi8Mf4U", sendAmount)

// add OP_RETURN and data as output w/ 0 satoshis
transactionBuilder.addOutput(data, 0)
// xpriv
//let xpriv = 'xprvA3ro4jZgoTiA2qFS9hRvvK34b4osrZqrVv4khnV4EqmJFUhogRdyweM7xMHTNWJG1LfsVoWzSiNiAZXYaWx4Do1HtiH4186udfAXx1FxYq1';


let node = BITBOX.HDNode.derivePath(masterHDNode, "m/44'/145'/0'/0/0");
let keyPair = BITBOX.HDNode.toKeyPair(node);

let legacy = BITBOX.HDNode.toLegacyAddress(node)
console.log("legacy: "+legacy)
//'1DErBHB1HXNJvW3b4dP3iyE85AR8toMvUd'

let cashAddr = BITBOX.HDNode.toCashAddress(node)
console.log("cashaddress: "+cashAddr)
//'bitcoincash:qzrrla7dulccne05k8xsrud44f47fv9kvuzpwsa5qp'


// instance of bip44BCHAccount node
//let node = BITBOX.HDNode.fromXPriv(xpriv);

// first external change address node
//let key = BITBOX.HDNode.toKeyPair(node);

let redeemScript;
// sign tx
transactionBuilder.sign(0, keyPair, redeemScript, transactionBuilder.hashTypes.SIGHASH_ALL, originalAmount)

// to raw hex
let hex = transactionBuilder.build().toHex()
console.log("hex: BITBOX.RawTransactions.sendRawTransaction(\"" + hex + "\").then((result) => { console.log(\"Broadcast Result: \"+result); }, (err) => { console.log(\"Broadcast Error: \"+err); });");

// POST to full $BCH node
BITBOX.RawTransactions.sendRawTransaction(hex).then((result) => { console.log(result); }, (err) => { console.log(err); });
//                                          BITBOX.RawTransactions.sendRawTransaction("02000000014e4e6d742b7f52f20f19f956940ef8a3ffff5614c2b65540ea5ead2051c0b7c4010000006b483045022100b53cffb6a70397f1965250339bb1d3d6a6a2df1dd0b74f494133c6214744fed30220741f723d4520ced3cee46af9e1c10562b870fb7fa103a1c9c2e95e1a51aa599541210202078bdbe3b60611a3c2b3b9c38b0b7bd6a22796173d8d2ccb481a3c130c9db5ffffffff02063d0000000000001976a9143fa1fad75c90e247899c970c099d49554b91d52e88ac00000000000000001c6a1a5265696e6861726474202d205468756e6465722773204669737400000000").then((result) => { console.log("Broadcast Result: "+result); }, (err) => { console.log("Broadcast Error: "+err); });