geocode.js

const fs = require("fs");
const https = require("https");

const placesStr = fs.readFileSync("places.txt", {encoding: "utf-8"});
const places = placesStr.split("\n").slice(0, -1);

const API_KEY = "";

/**
 * Sleep for some time
 * @param {string} millis
 * @returns {Promise<void>}
 */
function sleep(millis) {
	return new Promise(resolve => setTimeout(resolve, millis));
}

async function main() {
	for (let i = 0; i < places.length; ++i) {
		const placeName = places[i];
		const iStr = ("0000" + i.toString()).substr(-5);
		const destFilename = `places/${iStr}.json`;

		console.log(`${iStr} / ${places.length}`);
		if (fs.existsSync(destFilename)) {
			console.log(`    Destination file ${destFilename} exists, skipping`);
			continue;
		}

		const options = {
			host: "maps.googleapis.com",
			path: `/maps/api/geocode/json?address=${encodeURIComponent(placeName)}&key=${API_KEY}&language=pl&region=pl`,
		};

		console.log(`    URL: ${options.host}${options.path}`);
		console.log(`    Destination: ${destFilename}`);

		/** @type {Promise<string>} */
		const result = await new Promise(resolve => {
			https.request(options, (res) => {
				let str = "";
				res.on("data", chunk => str += chunk);
				res.on("end", () => resolve(str));
			}).end();
		});

		fs.writeFileSync(destFilename, result);

		await sleep(200);
	}
}

main();