node-red-contrib-nem2
Version:
NEM blockchain nodes
65 lines (62 loc) • 2.84 kB
JavaScript
/*
* Copyright 2018 NEM
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
module.exports = function (RED) {
const { Account, NetworkType } = require('nem2-sdk');
const validation = require('../lib/validationService');
function signTransaction(config) {
RED.nodes.createNode(this, config);
this.network = RED.nodes.getNode(config.network).network;
this.privateKey = config.privateKey;
let node = this;
this.on('input', function (msg) {
try {
if (typeof msg.nem === "undefined") {
msg.nem = {};
}
const privateKey = node.privateKey || msg.nem.privateKey || (msg.nem.account && msg.nem.account.keyPair ? msg.nem.account.keyPair.privateKey : undefined);
const network = node.network || msg.nem.network;
const account = validation.privateKeyValidate(privateKey) ? Account.createFromPrivateKey(privateKey, NetworkType[network]) : undefined;
if (account) {
if (msg.nem.hasOwnProperty("transaction")) {
if (msg.nem.transaction.transactionToCosign) {
const signedTransaction = account.signCosignatureTransaction(msg.nem.transaction);
msg.nem.signedTransaction = signedTransaction;
node.send(msg);
} else {
const signedTransaction = account.sign(msg.nem.transaction);
msg.nem.signedTransaction = signedTransaction;
node.send(msg);
}
}
else {
node.error("something went wrong with the transaction", msg);
}
} else if (privateKey) {
node.error("private key is not correct : " + privateKey, msg);
}
else {
node.error("private key is empty", msg);
}
} catch (error) {
node.error(error, msg);
}
node.on('close', function () {
node.status({});
});
});
}
RED.nodes.registerType("signTransaction", signTransaction);
};