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• .. (вверх)
• [DIR] ..
• [FILE] btc.js
• [FILE] eth.js
• [FILE] ltc.js
• [FILE] rmg.js
• [FILE] tbtc.js
• [FILE] teth.js
• [FILE] tltc.js
• [FILE] trmg.js
• [FILE] txrp.js
• [FILE] xrp.js

Просмотр файла: rmg.js

var BaseCoin = require('../baseCoin');
var common = require('../../common');
var prova = require('../../prova');
var _ = require('lodash');

var Rmg = function() {
  // this function is called externally from BaseCoin
  // replace the BaseCoin prototype with the local override prototype, which inherits from BaseCoin
  // effectively, move the BaseCoin prototype one level away
  this.__proto__ = Rmg.prototype;
  this.network = prova.networks.rmg;
};

Rmg.prototype.__proto__ = BaseCoin.prototype;

/**
 * Returns the factor between the base unit and its smallest subdivison
 * @return {number}
 */
Rmg.prototype.getBaseFactor = function() {
  return 1e6;
};

Rmg.prototype.getChain = function() {
  return 'rmg';
};
Rmg.prototype.getFamily = function() {
  return 'rmg';
};

Rmg.prototype.isValidAddress = function(address) {
  return prova.Address.validateBase58(address, this.network);
};

/**
 * Assemble keychain and half-sign prebuilt transaction
 * @param params
 * - txPrebuild
 * - prv
 * @returns {{txHex}}
 */
Rmg.prototype.signTransaction = function(params) {
  var txPrebuild = params.txPrebuild;
  var userPrv = params.prv;

  var transaction = prova.Transaction.fromHex(txPrebuild.txHex);

  if (transaction.ins.length !== txPrebuild.txInfo.unspents.length) {
    throw new Error('length of unspents array should equal to the number of transaction inputs');
  }

  var keychain = prova.HDNode.fromBase58(userPrv, this.network);
  var hdPath = keychain.hdPath();

  for (var index = 0; index < transaction.ins.length; ++index) {
    var currentUnspent = txPrebuild.txInfo.unspents[index];
    var path = "m/0/0/" + currentUnspent.chain + "/" + currentUnspent.index;
    var privKey = hdPath.deriveKey(path);

    var unspentAddress = prova.Address.fromBase58(currentUnspent.address);
    var subscript = unspentAddress.toScript();
    var txb = prova.TransactionBuilder.fromTransaction(transaction, this.network);
    try {
      txb.sign(index, privKey, subscript, currentUnspent.value);
    } catch (e) {
      throw new Error('Failed to sign input #' + index);
    }

    transaction = txb.buildIncomplete();
  }

  return {
    txHex: transaction.toHex()
  };
};

Rmg.prototype.explainTransaction = function(params) {
  var self = this;
  var transaction = prova.Transaction.fromHex(params.txHex);
  var id = transaction.getId();
  var changeAddresses = [];
  var spendAmount = 0;
  var changeAmount = 0;
  if (params.txInfo && params.txInfo.changeAddresses) {
    changeAddresses = params.txInfo.changeAddresses;
  }
  var explanation = {
    displayOrder: ['id', 'outputAmount', 'changeAmount', 'outputs', 'changeOutputs'],
    id: id,
    outputs: [],
    changeOutputs: []
  };
  transaction.outs.forEach(function(currentOutput) {
    var currentAddress = prova.Address.fromScript(currentOutput.script, self.network).toString();
    var currentAmount = currentOutput.value;

    if (changeAddresses.indexOf(currentAddress) !== -1) {
      // this is change
      changeAmount += currentAmount;
      explanation.changeOutputs.push({
        address: currentAddress,
        amount: currentAmount
      });
      return;
    }

    spendAmount += currentAmount;
    explanation.outputs.push({
      address: currentAddress,
      amount: currentAmount
    });
  });
  explanation.outputAmount = spendAmount;
  explanation.changeAmount = changeAmount;

  // add fee info if available
  if (params.feeInfo) {
    explanation.displayOrder.push('fee');
    explanation.fee = params.feeInfo;
  }
  return explanation;
};

module.exports = Rmg;

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