Major rework: multi-user accounts (register/login, per-user data isolation), new layout with sidebar/dashboard/profile menu, matrix phase view with collapsible category columns, life timeline with ages per phase, live budget capping, collapsible transitions, mobile support

src/app/api/plans/[planId]/route.ts

@@ -1,19 +1,24 @@
 import { NextRequest, NextResponse } from "next/server";
 import { prisma } from "@/lib/db";
-import { planInclude, toHouseholdInput, toPlanInput, getHouseholdOrNull } from "@/lib/queries";
+import { toHouseholdInput, toPlanInput, getHouseholdOrNull, getOwnedPlan } from "@/lib/queries";
+import { getCurrentUserId } from "@/lib/session";
 import { computePlan } from "@/lib/calculations";
 
 export async function GET(
   _request: NextRequest,
   { params }: { params: Promise<{ planId: string }> }
 ) {
+  const userId = await getCurrentUserId();
+  if (!userId) {
+    return NextResponse.json({ error: "Nicht authentifiziert." }, { status: 401 });
+  }
   const { planId } = await params;
-  const household = await getHouseholdOrNull();
+  const household = await getHouseholdOrNull(userId);
   if (!household) {
     return NextResponse.json({ error: "Kein Haushalt vorhanden." }, { status: 400 });
   }
 
-  const plan = await prisma.plan.findUnique({ where: { id: planId }, include: planInclude });
+  const plan = await getOwnedPlan(planId, userId);
   if (!plan) {
     return NextResponse.json({ error: "Plan nicht gefunden." }, { status: 404 });
   }
@@ -29,7 +34,15 @@ export async function DELETE(
   _request: NextRequest,
   { params }: { params: Promise<{ planId: string }> }
 ) {
+  const userId = await getCurrentUserId();
+  if (!userId) {
+    return NextResponse.json({ error: "Nicht authentifiziert." }, { status: 401 });
+  }
   const { planId } = await params;
-  await prisma.plan.delete({ where: { id: planId } });
+  const plan = await prisma.plan.findFirst({ where: { id: planId, household: { userId } } });
+  if (!plan) {
+    return NextResponse.json({ error: "Plan nicht gefunden." }, { status: 404 });
+  }
+  await prisma.plan.delete({ where: { id: plan.id } });
   return NextResponse.json({ ok: true });
 }