var AWS = require('aws-sdk'); 
var util = require('util');
var config = require('./config.json');

require('dotenv').config({
  'path': `${__dirname }/.env`
});

// configure AWS
AWS.config.update({ 'accessKeyId': process.env.AWS_ACCESS_KEY_ID, 'secretAccessKey': process.env.AWS_SECRET_ACCESS_KEY, 'region': process.env.AWS_REGION || 'eu-west-1' });

var sqs = new AWS.SQS();

var receiveMessageParams = {
  'QueueUrl': config.QueueUrl,
  'MaxNumberOfMessages': 10
};

function getMessages() {
  sqs.receiveMessage(receiveMessageParams, receiveMessageCallback);
}

function receiveMessageCallback(err, data) {
  // console.log(data);

  if (data && data.Messages && data.Messages.length > 0) {
    for (var i = 0; i < data.Messages.length; i++) {


      const body =JSON.parse( data.Messages[i].Body);

      if (body && body.Message) {

        const msg = JSON.parse(body.Message);
        console.dir(msg);
      }
      // console.dir(body);
      process.stdout.write('.');
      // console.log("do something with the message here...");
      //
      // Delete the message when we've successfully processed it
      const deleteMessageParams = {
        'QueueUrl': config.QueueUrl,
        'ReceiptHandle': data.Messages[i].ReceiptHandle
      };

      // sqs.deleteMessage(deleteMessageParams, deleteMessageCallback);
    }

    getMessages();
  }
  else {
    process.stdout.write('-');
    setTimeout(getMessages, 1000);
  }
}

function deleteMessageCallback(err, data) {
  // console.log("deleted message");
  // console.log(data);
}

setTimeout(getMessages, 1000);