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import { Router, Response, Request } from "express";
import fetch from "node-fetch";
import { HTTPError } from "@fosscord/util";
import { Snowflake, Config } from "@fosscord/util";
import { storage } from "../util/Storage";
import FileType from "file-type";
// TODO: somehow handle the deletion of images posted to the /external route
const router = Router();
const DEFAULT_FETCH_OPTIONS: any = {
redirect: "follow",
follow: 1,
headers: {
"user-agent":
"Mozilla/5.0 (compatible Fosscordbot/0.1; +https://fosscord.com)",
},
size: 1024 * 1024 * 8,
compress: true,
method: "GET",
};
router.post("/", async (req: Request, res: Response) => {
if (req.headers.signature !== Config.get().security.requestSignature)
throw new HTTPError("Invalid request signature");
if (!req.body) throw new HTTPError("Invalid Body");
const { url } = req.body;
if (!url || typeof url !== "string") throw new HTTPError("Invalid url");
const id = Snowflake.generate();
try {
const response = await fetch(url, DEFAULT_FETCH_OPTIONS);
const buffer = await response.buffer();
await storage.set(`/external/${id}`, buffer);
res.send({ id });
} catch (error) {
throw new HTTPError("Couldn't fetch website");
}
});
router.get("/:id", async (req: Request, res: Response) => {
const { id } = req.params;
const file = await storage.get(`/external/${id}`);
if (!file) throw new HTTPError("File not found");
const result = await FileType.fromBuffer(file);
res.set("Content-Type", result?.mime);
return res.send(file);
});
export default router;
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