103 lines
3.4 KiB
JavaScript
103 lines
3.4 KiB
JavaScript
import { buildLocalizedPath } from '../i18n/index.js';
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import { composeTitle } from './composeTitle.js';
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import { buildHreflangAlternates } from './hreflang.js';
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/**
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* Assembles a Next.js-compatible Metadata object from document SEO fields and
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* site-level data. Locale-aware: canonical points at the current locale's
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* path, and hreflang alternates cover every locale the document exists in.
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*
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* Designed for use inside Next.js `generateMetadata`. The caller resolves the
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* pieces (meta group, site name, image URL, localized slugs) and passes them
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* in — the plugin composes, it doesn't fetch.
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*/ export function buildMetadata({ baseUrl, config, homeSlug = 'home', imageUrl, locale, meta, order, pageTitle, prefix, query, separator, siteDescription, siteName, slugs }) {
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// Title source priority: titleOverride (exact, wins outright) > meta.title
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// (SEO title an editor set) > pageTitle (the document's own name). This means
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// a page with no SEO title still shows its name (e.g. 'Sprzątanie biur')
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// composed with the site name, instead of just the site name or a blank.
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const override = meta?.titleOverride?.trim();
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const resolvedPageTitle = meta?.title?.trim() || pageTitle?.trim() || undefined;
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const title = override || composeTitle({
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order,
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pageTitle: resolvedPageTitle,
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separator,
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siteName
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});
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const description = meta?.description?.trim() || siteDescription?.trim() || undefined;
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const origin = baseUrl?.replace(/\/$/, '') ?? '';
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const suffix = query ?? '';
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const currentPath = buildLocalizedPath({
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config,
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homeSlug,
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locale,
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prefix,
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slugs
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});
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const canonical = currentPath ? `${origin}${currentPath}${suffix}` : undefined;
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const languages = buildHreflangAlternates({
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baseUrl,
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config,
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homeSlug,
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prefix,
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slugs
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});
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if (suffix) {
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for (const code of Object.keys(languages)){
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languages[code] = `${languages[code]}${suffix}`;
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}
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}
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const images = imageUrl ? [
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{
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url: imageUrl
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}
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] : undefined;
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return {
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title,
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...description && {
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description
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},
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alternates: {
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...canonical && {
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canonical
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},
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...Object.keys(languages).length > 0 && {
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languages
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}
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},
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openGraph: {
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title,
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...description && {
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description
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},
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...images && {
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images
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},
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type: 'website',
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locale,
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...siteName ? {
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siteName
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} : {},
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...canonical ? {
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url: canonical
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} : {}
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},
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// robots: noindex pages are excluded (follow keeps link authority). Indexed
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// pages get generous snippet/preview limits so Google can show rich results
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// (long snippets, large image previews, full video previews).
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...meta?.noindex ? {
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robots: {
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follow: true,
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index: false
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}
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} : {
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robots: {
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follow: true,
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index: true,
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'max-image-preview': 'large',
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'max-snippet': -1,
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'max-video-preview': -1
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}
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}
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};
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}
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//# sourceMappingURL=buildMetadata.js.map
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