feat: implement pwa push notifications

app/actions/subscription.ts

@@ -0,0 +1,45 @@
+"use server";
+
+import prisma from "@/lib/prisma";
+
+export async function subscribeUser(planId: string, subscription: any) {
+    if (!subscription || !subscription.endpoint || !subscription.keys) {
+        throw new Error("Invalid subscription object");
+    }
+
+    const { endpoint, keys: { p256dh, auth } } = subscription;
+
+    // Use upsert to handle updates gracefully
+    // If endpoint exists, update the planId. A device follows the last plan logged into (or explicitly subscribed to).
+
+    // Check existence first to decide logic (or just upsert)
+    // Actually, if we want to allow multiple plans per device, we need a different model.
+    // For now, simple model: One device -> One Plan.
+
+    await prisma.pushSubscription.upsert({
+        where: { endpoint },
+        create: {
+            planId,
+            endpoint,
+            p256dh,
+            auth,
+        },
+        update: {
+            planId,
+            p256dh,
+            auth,
+        }
+    });
+
+    return { success: true };
+}
+
+export async function unsubscribeUser(endpoint: string) {
+    if (!endpoint) return;
+
+    await prisma.pushSubscription.deleteMany({
+        where: { endpoint },
+    });
+
+    return { success: true };
+}