Delete attachments of deleted messages, fix #273

api/src/util/Attachments.ts

@@ -0,0 +1,12 @@
+import { Attachment } from "@fosscord/util";
+import { deleteFile } from "@fosscord/api";
+import { URL } from "url";
+
+export async function deleteMessageAttachments(messageId: string, keep?: Attachment[]) {
+	let attachments = await Attachment.find({ message_id: messageId });
+	if (keep)
+		attachments = attachments.filter(x => !keep.map(k => k.id).includes(x.id));
+	await Promise.all(attachments.map(a => a.remove()));
+
+	attachments.forEach(a => deleteFile((new URL(a.url)).pathname)); //We don't need to await since this is done on the cdn
+}

api/src/util/cdn.ts

@@ -38,3 +38,16 @@ export async function handleFile(path: string, body?: string): Promise<string |
 		throw new HTTPError("Invalid " + path);
 	}
 }
+
+export async function deleteFile(path: string) {
+	const response = await fetch(`${Config.get().cdn.endpoint || "http://localhost:3003"}${path}`, {
+		headers: {
+			signature: Config.get().security.requestSignature,
+		},
+		method: "DELETE",
+	});
+	const result = await response.json();
+
+	if (response.status !== 200) throw result;
+	return result;
+}