billdeskJS

A tool to integrate billdesk payment gateway in JS

Usage

After installation simply require the module in your file like this.

const billdesk = require('billdeskjs');

Now, you need to define some environment variables like

MID = <ur merchant id>;
SEC_ID = <ur security id>;
BILL_URL = <billdesk_url>;
CONF_BILL_URL = <url for scheduled checks>;
CHECKSUM_KEY = <ur checksum>;
RETURN_URL = <ur return url>;

All the above mention variables (except for return url) will be provided by billdesk to you on request.

Now,to use it in ur project,simply make a new object of the class you required by doing

const client = new billdesk(MID, SEC_ID, CHECKSUM_KEY, RETURN_URL);

This needs to be done at the beginning of your script Now, use it by to generate message for in the format that billdesk requires and then send a post request to the BILL_URL from a html form

var msg = client.get_message(uniqueTransactionID,amount,aditionalInfo1,aditionalInfo2,aditionalInfo3,aditionalInfo4)

You will receive a response at your return url which needs to be parsed.(Take a look at the structure of retrun url here) The response received will be a array containing several fields.Pass the 'msg' parameter like this

var response = receivedResponse.msg; //assuming u stored the response in receivedResponse
var parsedResponse = client.responseMsg(response);

Now parsedResponse will have this structure

{
  MID: 'ur mid',
  OrderID: 'ur unique transaction id(passed at the time of message generation)',
  TaxnNo: 'taxation number for the transaction(generated by billdesk)',
  AMNT: 'transaction amount',
  TStat: 'transaction status',
  DnT: 'date and time (ex 09-03-2021 00:44:45)',
  TMode: 'transaction mode (ex Netbanking)'
}

Note All the data types are string in the above array.

Now TStat update your database on the basis of TStat.Take a look at the billdesk official documentation or this gist for more info about Status Codes.

Now, some transaction may not be processed instantly and will have a Transaction Status code as given here. They will require you to send requests after every 1 hour until billdesk gives you some different resposne. Now, the structure of this query message will somewhat different than that of message obtained by client.get_message(...) .This format of message can be obtained by

schedule_msg = client.get_schedule_msg(<order_id>);

order_id is the unique id YOU generated for each transaction. You will send this message to CONF_BILL_URL and the message you will recieve again needs to be parsed. To do so

schedule_resp = client.schedule_resp(<response recieved>);

The structure of schedule_resp will be

{
  MID: 'ur mid',
  TaxnNo: 'taxation number for the transaction(generated by billdesk)',
  OrderID: 'ur unique transaction id(passed at the time of message generation)',
  TStat: 'transaction status',
  RfndStat : 'refund status',
  AMNT: 'transaction amount'
}

The database should be updated on the basis of combination of status code and refund status which can be found in billdesk official documnetation or here.