feat: invoice generator

models/apps.ts

@@ -0,0 +1,18 @@
+import { prisma } from "@/lib/db"
+import { User } from "@prisma/client"
+
+export const getAppData = async (user: User, app: string) => {
+  const appData = await prisma.appData.findUnique({
+    where: { userId_app: { userId: user.id, app } },
+  })
+
+  return appData?.data
+}
+
+export const setAppData = async (user: User, app: string, data: any) => {
+  await prisma.appData.upsert({
+    where: { userId_app: { userId: user.id, app } },
+    update: { data },
+    create: { userId: user.id, app, data },
+  })
+}