test-triam-base-contract/src/contr_operations/transfer.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 payment operation.
 * @function
 * @alias ContrOperation.transfer
 * @param {object} opts
 * @param {string} opts.destination - The destination account ID.
 * @param {Asset} opts.asset - The asset to send.
 * @param {string} opts.amount - The amount to send.
 * @returns {xdr.Transfer}
 */
export const transfer = function(opts) {
  if (!StrKey.isValidEd25519PublicKey(opts.destination)) {
    throw new Error("destination is invalid");
  }
  if (!opts.asset) {
    throw new Error("Must provide an asset for a payment operation");
  }
  if (!this.isValidAmount(opts.amount)) {
    throw new TypeError(this.constructAmountRequirementsError('amount'));
  }

  let attributes = {};
  attributes.destination
    = Keypair.fromPublicKey(opts.destination).xdrAccountId();
  attributes.asset        = opts.asset.toXDRObject();
  attributes.amount       = this._toXDRAmount(opts.amount);
  let transfer             = new xdr.Transfer(attributes);

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

  return new xdr.ContrOperation(opAttributes);
};