From ab8a73d7c3e1886d387cabff3ac9c27b84b9115d Mon Sep 17 00:00:00 2001
From: Scrum4Me Agent <30029041+madhura68@users.noreply.github.com>
Date: Thu, 14 May 2026 21:36:57 +0200
Subject: [PATCH] feat(PBI-ll): voeg lib/product-switch-path.ts toe met
 resolveProductSwitchTarget

Pure helper die doel-URL bij product-wissel bepaalt; unit-tests dekken alle pad-gevallen.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 __tests__/lib/product-switch-path.test.ts | 55 +++++++++++++++++++++++
 lib/product-switch-path.ts                | 14 ++++++
 2 files changed, 69 insertions(+)
 create mode 100644 __tests__/lib/product-switch-path.test.ts
 create mode 100644 lib/product-switch-path.ts

diff --git a/__tests__/lib/product-switch-path.test.ts b/__tests__/lib/product-switch-path.test.ts
new file mode 100644
index 0000000..13d407a
--- /dev/null
+++ b/__tests__/lib/product-switch-path.test.ts
@@ -0,0 +1,55 @@
+import { describe, it, expect } from 'vitest'
+import { resolveProductSwitchTarget } from '@/lib/product-switch-path'
+
+describe('resolveProductSwitchTarget', () => {
+  it('returns null for non-product pages', () => {
+    expect(resolveProductSwitchTarget('/dashboard', 'new-id')).toBeNull()
+    expect(resolveProductSwitchTarget('/insights', 'new-id')).toBeNull()
+    expect(resolveProductSwitchTarget('/ideas', 'new-id')).toBeNull()
+    expect(resolveProductSwitchTarget('/jobs', 'new-id')).toBeNull()
+  })
+
+  it('maps /products/<old> to /products/<new>', () => {
+    expect(resolveProductSwitchTarget('/products/old-id', 'new-id')).toBe('/products/new-id')
+  })
+
+  it('maps /products/<old>/ to /products/<new>', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/', 'new-id')).toBe('/products/new-id')
+  })
+
+  it('maps /products/<old>/sprint to /products/<new>/sprint', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/sprint', 'new-id')).toBe(
+      '/products/new-id/sprint',
+    )
+  })
+
+  it('maps /products/<old>/sprint/<sprintId> to /products/<new>/sprint', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/sprint/abc123', 'new-id')).toBe(
+      '/products/new-id/sprint',
+    )
+  })
+
+  it('maps /products/<old>/sprint/.../planning to /products/<new>/sprint', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/sprint/abc123/planning', 'new-id')).toBe(
+      '/products/new-id/sprint',
+    )
+  })
+
+  it('maps /products/<old>/solo to /products/<new>/solo', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/solo', 'new-id')).toBe(
+      '/products/new-id/solo',
+    )
+  })
+
+  it('falls back to /products/<new> for /products/<old>/settings', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/settings', 'new-id')).toBe(
+      '/products/new-id',
+    )
+  })
+
+  it('falls back to /products/<new> for unknown sub-segments', () => {
+    expect(resolveProductSwitchTarget('/products/old-id/unknown/deep', 'new-id')).toBe(
+      '/products/new-id',
+    )
+  })
+})
diff --git a/lib/product-switch-path.ts b/lib/product-switch-path.ts
new file mode 100644
index 0000000..ce79ab9
--- /dev/null
+++ b/lib/product-switch-path.ts
@@ -0,0 +1,14 @@
+export function resolveProductSwitchTarget(
+  pathname: string,
+  newProductId: string,
+): string | null {
+  const match = pathname.match(/^\/products\/([^/]+)(\/.*)?$/)
+  if (!match) return null
+
+  const rest = match[2] ?? ''
+
+  if (!rest || rest === '/') return `/products/${newProductId}`
+  if (rest.startsWith('/sprint')) return `/products/${newProductId}/sprint`
+  if (rest.startsWith('/solo')) return `/products/${newProductId}/solo`
+  return `/products/${newProductId}`
+}