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✨ 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 { Router } from "express";
import fetch from "node-fetch";
import cheerio from "cheerio";
import crypto from "crypto";
import { HTTPError } from "lambert-server";
import { Snowflake } from "@fosscord/server-util";
import { storage } from "../util/Storage";
const router = Router();
@ -28,52 +30,34 @@ const DEFAULT_FETCH_OPTIONS: any = {
};
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;
if (!url || typeof url !== "string") throw new HTTPError("Invalid url");
const hash = crypto.createHash("md5").update(url).digest("hex");
const id = Snowflake.generate();
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();
const $ = cheerio.load(text);
await storage.set(`/external/${id}`, buffer);
const ogTitle = $('meta[property="og:title"]').attr("content");
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);
res.send({ id });
} catch (error) {
console.log(error);
throw new Error("Couldn't fetch website");
throw new HTTPError("Couldn't fetch website");
}
});
router.get("/:id/:filename", async (req, res) => {
const { id, filename } = req.params;
const { image, type } = await db.data.externals({ id: id }).get();
const imageBuffer = Buffer.from(image, "base64");
router.get("/:id/", async (req, res) => {
const { id } = req.params;
res.set("Content-Type", type);
res.send(imageBuffer);
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;