feat: revalidate webhook endpoint with tests

app/api/revalidate/route.ts

@@ -0,0 +1,47 @@
+import { revalidatePath } from 'next/cache'
+import { NextRequest, NextResponse } from 'next/server'
+import { createDirectus, rest, staticToken, readItem } from '@directus/sdk'
+
+export async function POST(req: NextRequest) {
+  const body = await req.json()
+
+  if (body.secret !== process.env.REVALIDATE_SECRET) {
+    return NextResponse.json({ error: 'Invalid secret' }, { status: 401 })
+  }
+
+  if (body.type === 'homepage') {
+    revalidatePath('/')
+    return NextResponse.json({ revalidated: true, path: '/' })
+  }
+
+  const { article_id } = body
+  if (!article_id) {
+    return NextResponse.json({ error: 'Missing article_id' }, { status: 400 })
+  }
+
+  const directus = createDirectus(process.env.DIRECTUS_URL!)
+    .with(staticToken(process.env.DIRECTUS_TOKEN!))
+    .with(rest())
+
+  const article = (await directus.request(
+    readItem('articles', article_id, {
+      fields: ['slug', 'category.slug'],
+    })
+  )) as { slug: string; category: { slug: string } } | null
+
+  if (!article) {
+    return NextResponse.json({ error: 'Article not found' }, { status: 404 })
+  }
+
+  const categorySlug = article.category.slug
+  const { slug } = article
+
+  revalidatePath('/')
+  revalidatePath(`/${categorySlug}`)
+  revalidatePath(`/${categorySlug}/${slug}`)
+
+  return NextResponse.json({
+    revalidated: true,
+    paths: ['/', `/${categorySlug}`, `/${categorySlug}/${slug}`],
+  })
+}