Replace images links to own domain on Golos Blockchain for Node.js

golos_replace_img_to_own_domain.js

// output post
res.json({
	created: result.created,
	title: result.title,
	body: imgUrlReplace(result.body)
});

// replace all img links to own domain
function imgUrlReplace(url) {
	/*return url.replace(/https:\/\/images.golos.io\/([a-zA-Z0-9]+)\/([0-9+]).jpg/g, function(match) {
		return 'https://yoursite.com/images/' + match[0] + '_' + match[1]
	});*/
	return url.replace(/https:\/\/images.golos.io\/([a-zA-Z0-9]+)\/([0-9+]).jpg/g, 'https://yoursite.com/images/$1_$2.jpg');
};

// proxy image to own domain https://yoursite.com/images/$1_$2.jpg
app.get('/images/:url', function(req, res) {
	//req.params.url = 'https://images.golos.io/' + req.params.url.replace('_', '/');
	req.params.url = 'https://images.weserv.nl/?url=images.golos.io/' + req.params.url.replace('_', '/');
	https.get(req.params.url, function(response) {
		var imageBuffer = new Buffer(parseInt(response.headers['content-length']));
		var bytes = 0;
		response.setEncoding('binary');
		response.on('data', function(chunk) {
			imageBuffer.write(chunk, bytes, 'binary');
			bytes += chunk.length;
		});
		response.on('end', function() {
			res.setHeader('Content-Type', 'image/jpg');
			res.send(imageBuffer);
		});
	});
});