Implement database migration, notification logs, and one-click Mailcow setup

lib/mailcow.ts

@@ -28,7 +28,8 @@ async function mfetch(path: string, options: RequestInit = {}) {
       cache: "no-store",
     });
     if (!res.ok) {
-      const text = await res.text();
+      const clone = res.clone();
+      const text = await clone.text();
       console.error(`[Mailcow API] Error ${res.status}: ${text}`);
     }
     return res;
@@ -228,3 +229,23 @@ export async function getDKIM(domain: string) {
   if (!res.ok) return null;
   return res.json();
 }
+
+// ─── Forwarding / Webhook Setup ──────────────────────────────
+// Automates the "one-click" configuration of mailbox notifications
+export async function setupMailboxForwarding(address: string, webhookUrl: string) {
+  // Check if webhookUrl is localhost and warn in console
+  if (webhookUrl.includes("localhost")) {
+    console.warn(`[Setup] WARNING: Using localhost for webhook (${webhookUrl}). Mailcow will not be able to reach this!`);
+  }
+
+  const body = {
+    address: address,
+    goto: webhookUrl,
+    active: 1,
+    sogo_visible: 0,
+  };
+  const res = await mfetch("/add/alias", { method: "POST", body: JSON.stringify(body) });
+  const data = await res.json();
+  return { ok: res.ok, data };
+}
+