Add config value for cache duration

src/api/middlewares/ImageProxy.ts

@@ -47,11 +47,9 @@ const resizeSupported = new Set([...sharpSupported, ...jimpSupported]);
 export async function ImageProxy(req: Request, res: Response) {
 	const path = req.originalUrl.split("/").slice(2);
 
-	const secret = Config.get().security.requestSignature;
-
 	// src/api/util/utility/EmbedHandlers.ts getProxyUrl
 	const hash = crypto
-		.createHmac("sha1", secret)
+		.createHmac("sha1", Config.get().security.requestSignature)
 		.update(path.slice(1).join("/"))
 		.digest("base64")
 		.replace(/\+/g, "-")
@@ -159,7 +157,10 @@ export async function ImageProxy(req: Request, res: Response) {
 	}
 
 	res.header("Content-Type", contentType);
-	res.setHeader("Cache-Control", "public, max-age=" + 1000 * 60 * 60 * 24);
+	res.setHeader(
+		"Cache-Control",
+		"public, max-age=" + Config.get().cdn.proxyCacheHeaderSeconds,
+	);
 
 	res.send(resultBuffer);
 }

src/util/config/types/CdnConfiguration.ts

@@ -1,17 +1,17 @@
 /*
 	Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
 	Copyright (C) 2023 Spacebar and Spacebar Contributors
-	
+
 	This program is free software: you can redistribute it and/or modify
 	it under the terms of the GNU Affero General Public License as published
 	by the Free Software Foundation, either version 3 of the License, or
 	(at your option) any later version.
-	
+
 	This program is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 	GNU Affero General Public License for more details.
-	
+
 	You should have received a copy of the GNU Affero General Public License
 	along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
@@ -25,4 +25,6 @@ export class CdnConfiguration extends EndpointConfiguration {
 
 	endpointPublic: string | null = null;
 	endpointPrivate: string | null = null;
+
+	proxyCacheHeaderSeconds: number = 60 * 60 * 24;
 }