Add storage interval

src/intervals/storage.ts

@@ -0,0 +1,19 @@
+/* eslint-disable no-await-in-loop */
+import fs from 'fs-extra';
+import { Client } from '..';
+
+export default function storage(client: Client) {
+  setInterval(async () => {
+    const accounts = await client.db.Account.find();
+    for (const account of accounts) {
+      let bytes = Number(await client.util.exec(`du -bs /home/${account.username}`));
+      try {
+        await fs.access(`/var/mail/${account.username}`, fs.constants.F_OK);
+        bytes += Number(await client.util.exec(`du -bs /var/mail/${account.username}`));
+      } catch {
+        bytes += 0;
+      }
+      await client.redis.set(`storage-${account.username}`, bytes);
+    }
+  }, 300000);
+}