add content-type and content-disposition

index.js

@@ -18,15 +18,18 @@ dbclient.connect().then(async () => {
 	app.get("/https://www.pixiv.net/en/artworks/:id", async (req, res) => {
 		//if (req.headers["cache-control"] == "max-age=0") { // this indicates a reload in chrome
 		// but chrome still sends it after redirect
-		if (ipa_lastload_map[req.ip] == req.params.id) {
+		if (ipa_lastload_map[req.ip] == req.params.id && req.query.noredirect == null) {
 			return redirectRandom(req, res); 
 		} else ipa_lastload_map[req.ip] = req.params.id;
 		console.log(new Date().toLocaleString(), req.ip, req.params.id);
 		var asdf = await collection.findOne({_id: req.params.id}, {downloaded_images: 1});
 		if (!asdf) return res.sendStatus(404);
+		var filename = Object.keys(asdf.downloaded_images)[0];
+		res.type(filename.split('.').pop());
+		res.header("Content-Disposition", `filename=${filename}`);
 		var gfsid = Object.values(asdf.downloaded_images)[0];
 		bucket.openDownloadStream(gfsid).pipe(res);
 	});
-	app.listen(8039);
+	app.listen(39);
 	console.log("server ready");
 });