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Code Issues Releases Activity

✨ external assets

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This commit is contained in:
Flam3rboy 2021-05-28 22:40:48 +02:00
parent 614d8f14fa
commit 21e659fce5
1 changed files with 20 additions and 36 deletions
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56
src/routes/external.ts
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@ -2,8 +2,10 @@
import bodyParser from "body-parser"; import bodyParser from "body-parser";
import { Router } from "express"; import { Router } from "express";
import fetch from "node-fetch"; import fetch from "node-fetch";
import cheerio from "cheerio";
import crypto from "crypto"; import crypto from "crypto";
import { HTTPError } from "lambert-server";
import { Snowflake } from "@fosscord/server-util";
import { storage } from "../util/Storage";
const router = Router(); const router = Router();
@ -28,52 +30,34 @@ const DEFAULT_FETCH_OPTIONS: any = {
}; };
router.post("/", bodyParser.json(), async (req, res) => { router.post("/", bodyParser.json(), async (req, res) => {
if (!req.body) throw new Error("Invalid Body (url missing) \nExample: url:https://discord.com"); if (!req.body) throw new HTTPError("Invalid Body");
const { url } = req.body; const { url } = req.body;
if (!url || typeof url !== "string") throw new HTTPError("Invalid url");
const hash = crypto.createHash("md5").update(url).digest("hex"); const id = Snowflake.generate();
try { try {
const request = await fetch(url, DEFAULT_FETCH_OPTIONS); const response = await fetch(ogImage, DEFAULT_FETCH_OPTIONS);
const buffer = await response.buffer();
const text = await request.text(); await storage.set(`/external/${id}`, buffer);
const $ = cheerio.load(text);
const ogTitle = $('meta[property="og:title"]').attr("content"); res.send({ id });
const ogDescription = $('meta[property="og:description"]').attr("content");
const ogImage = $('meta[property="og:image"]').attr("content");
const ogUrl = $('meta[property="og:url"]').attr("content");
const ogType = $('meta[property="og:type"]').attr("content");
const filename = new URL(url).host.split(".")[0];
const ImageResponse = await fetch(ogImage, DEFAULT_FETCH_OPTIONS);
const ImageType = ImageResponse.headers.get("content-type");
const ImageExtension = ImageType?.split("/")[1];
const ImageResponseBuffer = (await ImageResponse.buffer()).toString("base64");
const cachedImage = `/external/${ID}/${filename}.${ImageExtension}`;
await db.data.externals.push({ image: ImageResponseBuffer, id: ID, type: ImageType });
const new_cache_entry: crawled = { id: ID, ogTitle, ogDescription, cachedImage, ogUrl, ogType };
await db.data.crawler.push(new_cache_entry);
res.send(new_cache_entry);
} catch (error) { } catch (error) {
console.log(error); throw new HTTPError("Couldn't fetch website");
throw new Error("Couldn't fetch website");
} }
}); });
router.get("/:id/:filename", async (req, res) => { router.get("/:id/", async (req, res) => {
const { id, filename } = req.params; const { id } = req.params;
const { image, type } = await db.data.externals({ id: id }).get();
const imageBuffer = Buffer.from(image, "base64");
res.set("Content-Type", type); const file = await storage.get(`/external/${id}`);
res.send(imageBuffer); 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; export default router;