Really shitty external image resizing

bundle/package.json

@@ -54,7 +54,8 @@
 		"ts-patch": "^1.4.4",
 		"tsconfig-paths": "^3.12.0",
 		"typescript": "^4.2.3",
-		"typescript-json-schema": "0.50.1"
+		"typescript-json-schema": "0.50.1",
+		"@types/sharp": "^0.30.4"
 	},
 	"dependencies": {
 		"@aws-sdk/client-s3": "^3.36.1",
@@ -110,6 +111,7 @@
 		"typescript": "^4.1.2",
 		"typescript-cached-transpile": "^0.0.6",
 		"typescript-json-schema": "^0.50.1",
-		"ws": "^7.4.2"
+		"ws": "^7.4.2",
+		"sharp": "^0.30.7"
 	}
-}
+}

cdn/package.json

@@ -31,6 +31,7 @@
 		"@types/multer": "^1.4.7",
 		"@types/node": "^14.17.0",
 		"@types/node-fetch": "^2.5.7",
+		"@types/sharp": "^0.30.4",
 		"@zerollup/ts-transform-paths": "^1.7.18",
 		"ts-patch": "^1.4.4"
 	},
@@ -55,6 +56,7 @@
 		"multer": "^1.4.2",
 		"nanocolors": "^0.2.12",
 		"node-fetch": "^2.6.2",
+		"sharp": "^0.30.7",
 		"supertest": "^6.1.6",
 		"typescript": "^4.1.2"
 	},

cdn/src/routes/external.ts

@@ -3,8 +3,9 @@ import fetch from "node-fetch";
 import { HTTPError } from "lambert-server";
 import { Snowflake } from "@fosscord/util";
 import { storage } from "../util/Storage";
-import FileType from "file-type";
+import FileType, { stream } from "file-type";
 import { Config } from "@fosscord/util";
+import sharp from "sharp";
 
 // TODO: somehow handle the deletion of images posted to the /external route
 
@@ -56,4 +57,39 @@ router.get("/:id", async (req: Request, res: Response) => {
 	return res.send(file);
 });
 
+// this method is gross lol don't care
+router.get("/resize/:url", async (req: Request, res: Response) => {
+	const url = decodeURIComponent(req.params.url);
+	const { width, height } = req.query;
+	if (!width || !height) throw new HTTPError("Must provide width and height");
+	const w = parseInt(width as string);
+	const h = parseInt(height as string);
+	if (w < 1 || h < 1) throw new HTTPError("Width and height must be greater than 0");
+
+	const { resizeHeightMax, resizeWidthMax } = Config.get().cdn;
+	if (resizeHeightMax && resizeWidthMax &&
+		(w > resizeWidthMax || h > resizeHeightMax))
+		throw new HTTPError(`Width and height must not exceed ${resizeWidthMax}, ${resizeHeightMax}`);
+
+	let buffer;
+	try {
+		const response = await fetch(url, DEFAULT_FETCH_OPTIONS);
+		buffer = await response.buffer();
+	}
+	catch (e) {
+		throw new HTTPError("Couldn't fetch website");
+	}
+
+	const resizedBuffer = await sharp(buffer)
+		.resize(parseInt(width as string), parseInt(height as string), {
+			fit: "inside",
+		})
+		.png()
+		.toBuffer();
+
+	res.setHeader("Content-Disposition", "attachment");
+	res.setHeader("Content-Type", "image/png");
+	return res.end(resizedBuffer);
+});
+
 export default router;

util/src/entities/Config.ts

@@ -50,6 +50,8 @@ export interface ConfigValue {
 		endpointClient: string | null;
 		endpointPublic: string | null;
 		endpointPrivate: string | null;
+		resizeHeightMax: number | null;
+		resizeWidthMax: number | null;
 	};
 	api: {
 		defaultVersion: string;
@@ -218,6 +220,8 @@ export const DefaultConfigOptions: ConfigValue = {
 		endpointClient: null,
 		endpointPrivate: null,
 		endpointPublic: null,
+		resizeHeightMax: 1000,
+		resizeWidthMax: 1000,
 	},
 	api: {
 		defaultVersion: "9",

util/src/entities/Message.ts

@@ -114,7 +114,7 @@ export class Message extends BaseClass {
 	@ManyToOne(() => Application)
 	application?: Application;
 
-	@Column({ nullable: true, type: "longtext" })
+	@Column({ nullable: true })
 	content?: string;
 
 	@Column()