test-triam-base-contract/src/contr_operations/invoke.js

Low level triam smart cotnract support library

import {default as xdr} from "../generated/stellar-xdr_generated";
import {Keypair} from "../keypair";
import {StrKey} from "../strkey";
import isUndefined from 'lodash/isUndefined';
import isString from 'lodash/isString';

/**
 * Create a invoke operation.
 * @function
 * @alias ContrOperation.invoke
 * @param {object} opts
 * @param {string} opts.newState - new state.
 * @returns {xdr.Invoke}
 */
export const invoke = function(opts) {

  let attributes = {};

  if (!isString(opts.newState) &&
      !Buffer.isBuffer(opts.newState) &&
      opts.newState !== null) {
    throw new Error("newState must be a string, Buffer or null");
  }

  if (isString(opts.newState)) {
    opts.newState = Buffer.from(opts.newState);
  }

  attributes.newState        = opts.newState;
  let invoke             = new xdr.Invoke(attributes);

  let opAttributes = {};
  opAttributes.body = xdr.ContrOperationBody.invoke(invoke);

  return new xdr.ContrOperation(opAttributes);
};