Ping co-win vaccine api to check for availability and show notification using zenity

vaccine.js

const fetch = require('node-fetch');
const { exec } = require("child_process");
async function main(){
const districts = [
    { district_id: 294, district_name: 'BBMP' },
    { district_id: 265, district_name: 'Bangalore Urban' },
    { district_id: 276, district_name: 'Bangalore Rural' },
//    { district_id: 363, district_name: "Pune" },
//    { district_id: 270, district_name: 'Bagalkot' },
//    { district_id: 264, district_name: 'Belgaum' },
//    { district_id: 274, district_name: 'Bellary' },
//    { district_id: 272, district_name: 'Bidar' },
//    { district_id: 271, district_name: 'Chamarajanagar' },
//    { district_id: 273, district_name: 'Chikamagalur' },
//    { district_id: 291, district_name: 'Chikkaballapur' },
//    { district_id: 268, district_name: 'Chitradurga' },
//    { district_id: 269, district_name: 'Dakshina Kannada' },
//    { district_id: 275, district_name: 'Davanagere' },
//    { district_id: 278, district_name: 'Dharwad' },
//    { district_id: 280, district_name: 'Gadag' },
//    { district_id: 267, district_name: 'Gulbarga' },
//    { district_id: 289, district_name: 'Hassan' },
//    { district_id: 279, district_name: 'Haveri' },
//    { district_id: 283, district_name: 'Kodagu' },
//    { district_id: 277, district_name: 'Kolar' },
//    { district_id: 282, district_name: 'Koppal' },
//    { district_id: 290, district_name: 'Mandya' },
//    { district_id: 266, district_name: 'Mysore' },
//    { district_id: 284, district_name: 'Raichur' },
//    { district_id: 292, district_name: 'Ramanagara' },
//    { district_id: 287, district_name: 'Shimoga' },
//    { district_id: 288, district_name: 'Tumkur' },
//    { district_id: 286, district_name: 'Udupi' },
//    { district_id: 281, district_name: 'Uttar Kannada' },
//    { district_id: 293, district_name: 'Vijayapura' },
//    { district_id: 285, district_name: 'Yadgir' }
  ];
    for(let dis=0; dis<districts.length; dis++) {
        const distid = districts[dis].district_id;
        const date = new Date().toISOString().split('T')[0].split('-').reverse().join('-');
        const req = await fetch(`https://cdn-api.co-vin.in/api/v2/appointment/sessions/calendarByDistrict?district_id=${distid}&date=${date}`, {
            "credentials": "include",
            "headers": {
                "User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0",
                "Accept": "application/json, text/plain, */*",
                "Accept-Language": "en-US,en;q=0.5",
                "Pragma": "no-cache",
                "Cache-Control": "no-cache"
            },
            "referrer": "https://selfregistration.cowin.gov.in/",
            "method": "GET",
            "mode": "cors"
        });
        const resp = await req.json();
        if(resp?.centers?.length < 1) {
            console.log("Request failed");
        }
        const available_centers = resp?.centers?.filter(center=> {
            //console.log(center);
            const sessions = center?.sessions?.filter(session => {
                return session.min_age_limit == 18 && session.available_capacity_dose1 > 5;
            });
            return sessions?.length > 0;
        });
        if(available_centers?.length > 0) {
            console.log(new Date().toISOString(), "VACCINE AVAILABLE!! 😃");
            let pincodes = [];
            available_centers.map(center=> {
                pincodes.push(center.name + ', ' + center.pincode + ', ' + center.district_name);
            })
            exec(`zenity --info --width 1200 height 500 --text "VACCINE AVAILABLE!!!\n ${pincodes.join("\n")}"`);
        }
        else {
            console.log(new Date().toISOString(), "No vaccine 😔");
        }
    }
}

const delay = ms => new Promise(resolve => setTimeout(resolve, ms))

async function start() {
    while(true){
        main();
        await delay(15000);
    }
}

start();