function getSignatureBytes(signature) {
var bb = new ByteBuffer(32, true);
var publicKeyBuffer = new Buffer(signature.publicKey, "hex");
for (var i = 0; i < publicKeyBuffer.length; i++) {
bb.writeByte(publicKeyBuffer[i]);
}
bb.flip();
return new Uint8Array(bb.toArrayBuffer());
}
function getBytes(transaction) {
var assetSize = 0,
assetBytes = null;
switch (transaction.type) {
case 1: // Signature
assetSize = 32;
assetBytes = getSignatureBytes(transaction.asset.signature);
break;
case 2: // Delegate
assetBytes = new Buffer(transaction.asset.delegate.username, "utf8");
assetSize = assetBytes.length;
break;
case 3: // Vote
if (transaction.asset.votes !== null) {
assetBytes = new Buffer(transaction.asset.votes.join(""), "utf8");
assetSize = assetBytes.length;
}
break;
case 4: // Multi-Signature
var keysgroupBuffer = new Buffer(transaction.asset.multisignature.keysgroup.join(""), "utf8");
var bb = new ByteBuffer(1 + 1 + keysgroupBuffer.length, true);
bb.writeByte(transaction.asset.multisignature.min);
bb.writeByte(transaction.asset.multisignature.lifetime);
for (var i = 0; i < keysgroupBuffer.length; i++) {
bb.writeByte(keysgroupBuffer[i]);
}
bb.flip();
assetBytes = bb.toBuffer();
assetSize = assetBytes.length;
break;
case 5: // Dapp
assetBytes = getDAppBytes(transaction.asset.dapp);
assetSize = assetBytes.length;
break;
case 6: // In Transfer (Dapp Deposit)
assetBytes = getTransferBytes(transaction.asset.dapptransfer);
assetSize = assetBytes.length;
break;
}
if (transaction.requesterPublicKey) {
assetSize += 32;
}
var bb = new ByteBuffer(1 + 4 + 32 + 8 + 8 + 64 + 64 + assetSize, true);
bb.writeByte(transaction.type);
bb.writeInt(transaction.timestamp);
var senderPublicKeyBuffer = new Buffer(transaction.senderPublicKey, "hex");
for (var i = 0; i < senderPublicKeyBuffer.length; i++) {
bb.writeByte(senderPublicKeyBuffer[i]);
}
if (transaction.requesterPublicKey) {
var requesterPublicKey = new Buffer(transaction.requesterPublicKey, "hex");
for (var i = 0; i < requesterPublicKey.length; i++) {
bb.writeByte(requesterPublicKey[i]);
}
}
if (transaction.recipientId) {
var recipient = transaction.recipientId.slice(0, -1);
recipient = bignum(recipient).toBuffer({size: 8});
for (var i = 0; i < 8; i++) {
bb.writeByte(recipient[i] || 0);
}
} else {
for (var i = 0; i < 8; i++) {
bb.writeByte(0);
}
}
bb.writeLong(transaction.amount);
if (assetSize > 0) {
for (var i = 0; i < assetSize; i++) {
bb.writeByte(assetBytes[i]);
}
}
if (transaction.signature) {
var signatureBuffer = new Buffer(transaction.signature, "hex");
for (var i = 0; i < signatureBuffer.length; i++) {
bb.writeByte(signatureBuffer[i]);
}
}
if (transaction.signSignature) {
var signSignatureBuffer = new Buffer(transaction.signSignature, "hex");
for (var i = 0; i < signSignatureBuffer.length; i++) {
bb.writeByte(signSignatureBuffer[i]);
}
}
bb.flip();
var arrayBuffer = new Uint8Array(bb.toArrayBuffer());
var buffer = [];
for (var i = 0; i < arrayBuffer.length; i++) {
buffer[i] = arrayBuffer[i];
}
return new Buffer(buffer);
}