VonageとGoogle Maps APIを使用したSMSによる交通警報

const app = require('express')()
const bodyParser = require('body-parser')

if (process.env.NODE_ENV !== "production") {
    require("dotenv").config();
}

app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: true }))

app.listen(process.env.PORT || 3000, "127.0.0.1", () => {
    console.log("Server Running on Port ", process.env.PORT || 3000);
});

PORT = 3000

app.route("/webhooks/inbound-sms")
.get(handleInboundSms)
.post(handleInboundSms);

function handleInboundSms(request, response) {
    // reads the SMS body
    const params = Object.assign(request.query, request.body);

    // process the SMS text
    getTrafficDetailsAndSendSMS(params);

    // notify that we have received SMS
    response.status(204).send();
}

Traffic between Mumbai and Pune

function getTrafficDetailsAndSendSMS(params) {
    // get the source and destination by parsing the text
    const { origin, destination } = parseText(params);

    // get the traffic details and routes
    const routes = getTrafficDetails({ origin, destination });

    // send back the SMS
    sendSMS(params.msisdn, routes);
}

function parseText({ text }) {
    let sampleText = "Traffic between mumbai and pune";
    if (text) {
   	 sampleText = text;
    }

    sampleText = sampleText.trim();
    const characters = sampleText.split(" ");
    const origin = characters[2];
    const destination = characters[4];

    return { origin, destination };
}

async function getTrafficDetails({ origins, destinations }) {
    try {
   	 const YOUR_API_KEY = process.env.GOOGLE_MAP_API_KEY;
   	 const mode = "driving";
   	 const departure_time = "now";

   	 var  config = {
   		 method:  "get",
   		 url:  `https://maps.googleapis.com/maps/api/directions/json?origins=${origins}&destinations=${destinations}&mode=${mode}&departure_time=${departure_time}&language=en-US&key=${YOUR_API_KEY}`,
   	 };

   	 let response = await axios(config);
   	 response = await response.data;

   	 const  routes = getRoutes(response);
   	 return  routes.join(" \n\n ");
    } catch (e) {
   	 console.error("There was some error while getting routes details", e);
    }
}

const response = {
  	routes: [
    	{
      	bounds: {
        	northeast: { lat: 41.8781139, lng: -87.6297872 },
        	southwest: { lat: 34.0523525, lng: -118.2435717 },
      	},
      	copyrights: "Map data ©2022 Google, INEGI",
      	legs: [
        	{
          	distance: { text: "579 km", value: 932311 },
          	duration: { text: "8 hours 48 mins", value: 31653 },
          	duration_in_traffic: { text: "8 hours 55 mins", value: 932311 },
          	end_address: "Panvel",
          	end_location: { lat: 37.0842449, lng: -94.513284 },
          	start_address: "Mumbai",
          	start_location: { lat: 41.8781139, lng: -87.6297872 },
          	steps: [],
          	traffic_speed_entry: [],
          	via_waypoint: [],
        	},
        	{
          	distance: { text: "217 km", value: 349512 },
          	duration: { text: "3 hours 17 mins", value: 11799 },
          	duration_in_traffic: { text: "3 hours 40 mins", value: 932311 },
          	end_address: "Alephata",
          	end_location: { lat: 35.4675612, lng: -97.5164077 },
          	start_address: "Panvel",
          	start_location: { lat: 37.0842449, lng: -94.513284 },
          	steps: [],
          	traffic_speed_entry: [],
          	via_waypoint: [],
        	},
        	{
          	distance: { text: "1,328 km", value: 2137682 },
          	duration: { text: "19 hours 28 mins", value: 70097 },
          	duration_in_traffic: { text: "20 hours 22 mins", value: 932311 },
          	end_address: "Pune",
          	end_location: { lat: 34.0523525, lng: -118.2435717 },
          	start_address: "Alephata",
          	start_location: { lat: 35.4675612, lng: -97.5164077 },
          	steps: [],
          	traffic_speed_entry: [],
          	via_waypoint: [],
        	},
      	],
      	summary: "I-55 S and I-44",
      	warnings: [],
      	waypoint_order: [0, 1],
    	},
  	],
  	status: "OK",
	};

const  getRoutes = ({ routes }) => {

// calculate the overall distance of all the routes

return  routes.reduce((a, b, l) => {
const { legs } = b;

 

let  via = "";
let  normalTime = 0;
let  timeInTraffic = 0;

 

// for each route, calculate the distance path wise, from one to another

const  distance = legs.reduce((x, y, i) => {

const { distance, duration, duration_in_traffic, steps, start_address, end_address } = y;

normalTime += getTimeInMinutes(duration.text);

timeInTraffic += getTimeInMinutes(duration_in_traffic.text);

 

if (i !== legs.length - 1) {

via = via ? via + " -> " + end_address : end_address;

}

const  string = `From ${start_address} to ${end_address} it takes ${duration.text} normally and ${duration_in_traffic.text} in traffic to cover a distance of ${distance.text}`;

x.push(string);
return  x;
}, []);

// for the final string
const  finalString = `Route${l + 1} via ${via} will take ${processTime(
normalTime
)} normally and ${processTime(
timeInTraffic
)} in traffic. Path via breakdown is: ${distance.join(" AND ")}`;

// push the string
a.push(finalString);
return  a;
}, []);
};

// helper function extract to hours and minutes from text
// and return time in minutes

const  getTimeInMinutes = (timeText) => {

timeText = timeText.split(" ");

let  hrs = timeText[0];

let  mins = timeText[2];

return  parseInt(hrs) * 60 + parseInt(mins);

};

 

// helper function to get hours and mins from the time

const  processTime = (time) => {

const  hrs = Math.floor(time / 60);

const  mins = time % 60;

return  `${hrs} hours ${mins} mins`;

};

"Route1 via Panvel -> Alephata will take 31 hours 33 mins normally and 32 hours 57 mins in traffic. Path via breakdown is:  From Mumbai to Panvel it takes 8 hours 48 mins normally and 8 hours 55 mins in traffic to cover a distance of 579 km AND From Panvel to Alephata it takes 3 hours 17 mins normally and 3 hours 40 mins in traffic to cover a distance of 217 km AND From Alephata to Pune it takes 19 hours 28 mins normally and 20 hours 22 mins in traffic to cover a distance of 1,328 km"

"Route2 via Eastern Express Highway -> Lonavala will take 11 hours 33 mins normally and 12 hours 57 mins in traffic. Path via breakdown is:  From Mumbai to Eastern Express Highway it takes 7 hours 48 mins normally and 7 hours 55 mins in traffic to cover a distance of 579 km AND From Eastern Express Highway to Lonavala it takes 2 hours 17 mins normally and 2 hours 40 mins in traffic to cover a distance of 200 km AND From Lonavala to Pune it takes 1 hours 28 mins normally and 2 hours 22 mins in traffic to cover a distance of 1,28 km"

async function sendSMS(msisdn, routes) {
    try {
   	 const data = qs.stringify({
   		 from: "Vonage APIs",
   		 text: routes,
   		 to: msisdn,
   		 api_key: process.env.VONAGE_API_KEY,
   		 api_secret: process.env.VONAGE_API_SECRET,
   	 });

   	 const config = {
   		 method: "post",
   		 url: "https://rest.nexmo.com/sms/json",
   		 headers: {
   		 "Content-Type": "application/x-www-form-urlencoded",
   		 },
   		 data: data,
   	 };

   	 let response = await axios(config);
   	 response = await response.data;
    } catch (e) {
   	 console.error("There was some error while sending sms", e);
    }
}