import { Readability } from "@mozilla/readability";
import { JSDOM } from "jsdom";
import express from "express";
import morgan from "morgan";
import bodyParser from "body-parser";
import createDOMPurify from "dompurify";
import * as Sentry from "@sentry/node";
import * as Tracing from "@sentry/tracing";

const app = express();
app.use(morgan('combined'));
app.use(bodyParser.text({
	type: "text/html",
	limit: '1mb',
}));

if (process.env.SENTRY_DSN) {
	Sentry.init({
		dsn: process.env.SENTRY_DSN,
		integrations: [
			new Sentry.Integrations.Http({tracing: true}),
			new Tracing.Integrations.Express({app}),
		],
		tracesSampleRate: 0.2
	});

	app.use(Sentry.Handlers.requestHandler());
	app.use(Sentry.Handlers.tracingHandler());
}

app.get('/status', (req, res) => {
	res.type('text/plain').send('OK');
});

app.post('/readability', (req, res) => {
	const doc = new JSDOM(req.body, {
		url: req.params.url,
	});
	const reader = new Readability(doc.window.document);
	const article = reader.parse();
	const purifier = createDOMPurify(doc.window);
	const cleaned = purifier.sanitize(article.content);
	res.send(cleaned);
});

if (process.env.SENTRY_DSN) {
	app.use(Sentry.Handlers.errorHandler());
}

const port = process.env.PORT || 4001;
// only accept local requests
app.listen(port, "localhost", () => {
	console.log(`listening on port ${port}`);
});