test-triam-base-contract/src/operations/create_contract.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 clone from "lodash/clone";
import isUndefined from 'lodash/isUndefined';
import isString from 'lodash/isString';

/**
 * Create and fund a non existent contract.
 * @function
 * @alias Operation.createContract
 * @param {object} opts
 * @param {string} opts.startingBalance - Amount in XLM the account should be funded for. Must be greater
 *                                   than the [reserve balance amount](https://www.stellar.org/developers/learn/concepts/fees.html).
 * @param {string|Buffer} opts.contractAddr - Address of contract

 * @param {object} opts.data - Address of contract
 * @param {string} [opts.data.funcName] - function name
 * @param {string|Buffer} [opts.data.contractParams] - params of contract functions
 * @param {string} opts.fileHash
 * 
 * @param {string} [opts.source] - The source account for the create contract. Defaults to the transaction's source account.
 * @returns {xdr.CreateContractOp}
 */
export const createContract = function(opts) {

  if (!this.isValidAmount(opts.startingBalance)) {
    throw new TypeError(
                this.constructAmountRequirementsError('startingBalance'));
  }
  let attributes = {};
  attributes.contractId     = "";
  attributes.startingBalance = this._toXDRAmount(opts.startingBalance);

  if (!isUndefined(opts.contractAddr) && !isString(opts.contractAddr)) {
    throw new TypeError('contractAddr argument must be of type String');
  }
  //attributes.contractAddr = opts.contractAddr;

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

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

  attributes.contractAddr        = opts.contractAddr;

  // thuannd notes start

  if (!isUndefined(opts.data.funcName) && !isString(opts.data.funcName)) {
    throw new TypeError('funcName argument must be of type String');
  }

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

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

  attributes.data = new xdr.ContractInput({
    funcName: opts.data.funcName,
    contractParams: opts.data.contractParams
  });

  attributes.state = "";

  if (!(isString(opts.fileHash) && opts.fileHash.length <= 64)) {
    throw new Error("fileHash must be a string, up to 64 characters");
  }
  attributes.fileHash = opts.fileHash;
  attributes.errFlag = 0;

  // thuannd notes end

  let createContract          = new xdr.CreateContractOp(attributes);

  let opAttributes = {};
  opAttributes.body = xdr.OperationBody.createContract(createContract);
  this.setSourceAccount(opAttributes, opts);

  return new xdr.Operation(opAttributes);
};