feat: add type=all to revalidate all category pages

app/api/revalidate/route.ts

@@ -1,6 +1,6 @@
 import { revalidatePath } from 'next/cache'
 import { NextRequest, NextResponse } from 'next/server'
-import { createDirectus, rest, staticToken, readItem } from '@directus/sdk'
+import { createDirectus, rest, staticToken, readItem, readItems } from '@directus/sdk'
 
 export async function POST(req: NextRequest) {
   const body = await req.json()
@@ -14,6 +14,26 @@ export async function POST(req: NextRequest) {
     return NextResponse.json({ revalidated: true, path: '/' })
   }
 
+  if (body.type === 'all') {
+    const directus = createDirectus(process.env.DIRECTUS_URL!)
+      .with(staticToken(process.env.DIRECTUS_TOKEN!))
+      .with(rest())
+
+    revalidatePath('/')
+
+    const categories = await directus.request(
+      readItems('categories', { fields: ['slug'] })
+    ) as { slug: string }[]
+
+    const paths = ['/']
+    for (const cat of categories) {
+      revalidatePath(`/${cat.slug}`)
+      paths.push(`/${cat.slug}`)
+    }
+
+    return NextResponse.json({ revalidated: true, paths })
+  }
+
   const { article_id } = body
   if (!article_id) {
     return NextResponse.json({ error: 'Missing article_id' }, { status: 400 })