9cc2cda924
- app plugin seo-route-robots: a page whose meta sets requiresAuth: true gets robots noindex, nofollow, a page with seo.robots gets its value, a path under seo.noindexRoutes gets noindex, nofollow; meta tag above the CMS head entry and X-Robots-Tag during SSR, never on staging - requiresAuth and seo added to Nuxt's page meta extraction keys - playground /konto, /szkic and /prywatne with their smoke lines
51 lines
2.1 KiB
TypeScript
51 lines
2.1 KiB
TypeScript
// Noindex for the routes an app declares (D-23, D-21), without page code:
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//
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// - a page whose meta sets requiresAuth: true (a signed-in or auth page)
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// gets robots "noindex, nofollow";
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// - a page whose meta sets seo: { robots: '...' } gets that value;
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// - a path under seo.noindexRoutes gets "noindex, nofollow" (its route
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// rule already sends the header; this adds the meta tag).
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//
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// The value goes into a robots meta tag that wins over the CMS's (a lower
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// tagPriority than the head plugin's 'critical') and, during SSR, into the
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// X-Robots-Tag header once the navigation is done, after the route
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// middleware. Every other page keeps the CMS robots; on staging the CMS's
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// noindex, nofollow stays. Works with the layer off too: it reads no CMS.
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import { isNoindex } from '../../lib/guard.ts'
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import { pageMetaRobots } from '../../lib/routes.ts'
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/** Wins over the CMS head entry (tagPriority 'critical', -8). */
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const ROUTE_ROBOTS_PRIORITY = -10
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export default defineNuxtPlugin((nuxtApp) => {
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const config = useRuntimeConfig()
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const declared = (config.public.seo as { noindexRoutes?: unknown } | undefined)?.noindexRoutes
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const noindexRoutes = Array.isArray(declared) ? declared.filter((p): p is string => typeof p === 'string') : []
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const router = useRouter()
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const answer = useSeoAnswer()
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const robotsFor = (route: { path: string; meta: Record<string, unknown> }): string | null => {
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if (answer.value?.staging === true) return null
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const own = pageMetaRobots(route.meta)
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if (own) return own
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return isNoindex(route.path, noindexRoutes) ? 'noindex, nofollow' : null
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}
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useHead(
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computed(() => {
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const robots = robotsFor(router.currentRoute.value)
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return robots ? { meta: [{ name: 'robots', content: robots }] } : {}
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}),
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{ tagPriority: ROUTE_ROBOTS_PRIORITY },
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)
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if (import.meta.server) {
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router.afterEach((to, _from, failure) => {
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if (failure) return
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const robots = robotsFor(to)
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if (robots) nuxtApp.runWithContext(() => (useResponseHeader('X-Robots-Tag').value = robots))
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})
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}
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})
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