Pressing an Amazon AWS IoT Button to Find the Rright Restaurant - Node.js on AWS Lambda

dash_lambda_food.js

var AWS = require('aws-sdk');
var sns = new AWS.SNS();
var GoogleMaps = require('googlemaps');
var GooglePlaces = require('node-googleplaces');
var weather = require('openweather-apis');
var stripe = require('stripe')(STRIPE_SECRET_KEY);
var googleConfig = { key: GOOGLE_API_KEY };
var maps = new GoogleMaps(googleConfig);
var places = new GooglePlaces(googleConfig.key);
var direction_params = {
  origin: 'LAT,LONG',
};
weather.setLang('en');
weather.setUnits('imperial');
weather.setAPPID(OPENWEATHERMAP_API_KEY);
weather.setCoordinate(LAT, LONG);

exports.handler = (event, context) => {
  weather.getAllWeather(function(err, response){
    if ([800, 801, 802, 803, 804, 951, 952, 953, 954, 955].indexOf(response.weather.id) && event.clickType == 'SINGLE') {
      params = {location: 'LAT,LONG',
                radius: 200,
                type: 'restaurant',
                opennow: true,
                maxprice: 2
              };
      places.nearbySearch(params, (err, res) => {
        index = Math.floor(Math.random() * res.body.results.length);
        places.details({placeid: res.body.results[index].place_id}, (err, res) => {
          direction_params.mode = 'walking';
          direction_params.destination = 'place_id:'+res.body.result.place_id;
          maps.directions(direction_params, function(err, directions) {
            sns.publish({
                Message: "Beautiful day! Walk over to " + res.body.result.name + " at " + res.body.result.vicinity + ". It'll take " + directions.routes[0].legs[0].duration.text,
                TopicArn: SNS_TOPIC_ARN
            }, function(error, data) {
              if (error) {
                context.fail(null, 'SNS error');
              }
              context.done(null, 'Sent SMS!');
            });
          });
        });
      });
    } else {
      stripe.balance.retrieve(function(err, balance) {
        if (((balance.available.amount + balance.pending.amount) > 100000) || event.clickType == 'DOUBLE') {
          params = {location: 'LAT,LONG',
                    radius: 10000,
                    type: 'restaurant',
                    opennow: true,
                    minprice: 3
                  };
          places.nearbySearch(params, (err, res) => {
            index = Math.floor(Math.random() * res.body.results.length);
            places.details({placeid: res.body.results[index].place_id}, (err, res) => {
              direction_params.mode = 'walking';
              direction_params.destination = 'place_id:'+res.body.result.place_id;
              maps.directions(direction_params, function(err, directions) {
                sns.publish({
                    Message: "Treat yourself at " + res.body.result.name + " at " + res.body.result.vicinity + ". It'll take " + directions.routes[0].legs[0].duration.text + " driving. Want to call a Lyft?",
                    TopicArn: SNS_TOPIC_ARN
                }, function(error, data) {
                  if (error) {
                    context.fail(null, 'SNS error');
                  }
                  context.done(null, 'Sent SMS!');
                });
              });
            });
          });
        } else {
          params = {location: 'LAT,LONG',
                    radius: 10000,
                    type: 'meal_delivery',
                    opennow: true,
                    maxprice: 2
                  };
          places.nearbySearch(params, (err, res) => {
            index = Math.floor(Math.random() * res.body.results.length);
            places.details({placeid: res.body.results[index].place_id}, (err, res) => {
              sns.publish({
                  Message: "F-it. Just get delivery from " + res.body.result.name + ". The number is " + res.body.result.formatted_phone_number,
                  TopicArn: SNS_TOPIC_ARN
              }, function(error, data) {
                if (error) {
                  context.fail(null, 'SNS error');
                }
                context.done(null, 'Sent SMS!');
              });
            });
          });
        }
      });
    }
  });
};

I executed the code, but "LAT,LONG" are not defined, could you please explain why ?