test-triam-base-contract/src/operations/send_asset.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";

/**
 * Create a sendAsset operation.
 * @function
 * @alias Operation.sendAsset
 * @param {object} opts
 * @param {string} opts.contractId - The destination contract ID.
 * @param {Asset} opts.asset - The asset to send.
 * @param {string} opts.amount - The amount to send.
 * @param {string} [opts.source] - The source account for the send asset. Defaults to the transaction's source account.
 * @returns {xdr.SendAssetOp}
 */
export const sendAsset = function(opts) {

  // thuannd start: thuannd notes
  if (!StrKey.isValidContractKey(opts.contractId)) {
    throw new Error("contract is invalid");
  }
  // thuannd end

  if (!opts.asset) {
    throw new Error("Must provide an asset for a sendAsset operation");
  }
  if (!this.isValidAmount(opts.amount)) {
    throw new TypeError(this.constructAmountRequirementsError('amount'));
  }

  let attributes = {};
  attributes.contractId
    = Keypair.fromContractKey(opts.contractId).xdrContractId();

  // now, just support native asset
  // if (!opts.asset.isNative())
  // {
  //   throw new Error("Just support the native asset now!");
  // }
  attributes.asset        = opts.asset.toXDRObject();


  attributes.amount       = this._toXDRAmount(opts.amount);

  attributes.state = "";
  attributes.errFlag = 0;

  let sendAsset           = new xdr.SendAssetOp(attributes);

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

  return new xdr.Operation(opAttributes);
};