parsec-lib/dist/helpers.js

transaction and block implementation

'use strict';Object.defineProperty(exports, "__esModule", { value: true });exports.



extendWeb3 = extendWeb3;exports.



















































calcInputs = calcInputs;exports.
























calcOutputs = calcOutputs;var _outpoint = require('./outpoint');var _outpoint2 = _interopRequireDefault(_outpoint);var _input = require('./input');var _input2 = _interopRequireDefault(_input);var _output = require('./output');var _output2 = _interopRequireDefault(_output);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}function extendWeb3(web3Instance) {// `_extend` for web3 0.2x.x, `extend` for 1.x
  var extend = web3Instance._extend || web3Instance.extend; // eslint-disable-line no-underscore-dangle, max-len
  extend({ methods: [new extend.Method({ name: 'getUnspent', call: 'parsec_unspent', params: 1, inputFormatters: [extend.formatters.inputAddressFormatter], outputFormatter: function outputFormatter(unspent) {return { output: unspent.output, outpoint: _outpoint2.default.fromRaw(unspent.outpoint) };} }), new extend.Method({ name: 'getColor', call: 'parsec_getColor', params: 1, inputFormatters: [extend.formatters.inputAddressFormatter], outputFormatter: Number }), new extend.Method({ name: 'getColors', call: 'parsec_getColors', params: 0, inputFormatters: [], outputFormatter: String }), new extend.Method({ name: 'status', call: 'parsec_status', params: 0, inputFormatters: [], outputFormatter: String }), new extend.Method({ name: 'getConfig', call: 'parsec_getConfig', params: 0, inputFormatters: [], outputFormatter: function outputFormatter(a) {return a;} })] });return web3Instance;}function calcInputs(unspent, from, amount, color) {var myUnspent = unspent.filter(function (_ref) {var output = _ref.output;return output.color === color && output.address.toLowerCase() === from.toLowerCase();});var inputs = [];var sum = 0;for (var i = 0; i < myUnspent.length; i += 1) {inputs.push(new _input2.default(myUnspent[i].outpoint));sum += myUnspent[i].output.value;if (sum >= amount) {break;}}if (sum < amount) {throw new Error('Not enough inputs');}return inputs;} // ToDo: handle inputs from different accounts
// ToDo: handle different input colors
function calcOutputs(unspent, inputs, from, to, amount, color) {if (unspent.length === 0) {throw new Error('Unspent is empty');}
  var inInputs = function inInputs(u) {return inputs.findIndex(function (input) {return u.outpoint.equals(input.prevout);}) > -1;};
  var sum = unspent.filter(inInputs).reduce(function (a, u) {return a + u.output.value;}, 0);

  if (sum < amount) {
    throw new Error('Not enough inputs');
  }

  var outputs = [new _output2.default(amount, to.toLowerCase(), color)];
  if (sum > amount) {
    outputs.push(new _output2.default(sum - amount, from.toLowerCase(), color));
  }

  return outputs;
}