import { buildAutoFillMetaHook } from './autoFillMeta.js';
/**
 * Injects the auto-fill meta hook into every SEO-enabled collection.
 *
 * Runs after @payloadcms/plugin-seo has added the meta group, appending a
 * beforeChange hook that fills empty meta from document content. Existing
 * hooks are preserved (plugin hook runs last, so editor input and other hooks
 * win first).
 */ export function injectAutoFillMeta(config, seo) {
    // autoFill disabled explicitly — leave collections untouched
    if (seo.autoFill === false) {
        return config;
    }
    const hook = buildAutoFillMetaHook(seo.autoFill);
    return {
        ...config,
        collections: (config.collections ?? []).map((collection)=>{
            if (!seo.collections.includes(collection.slug)) {
                return collection;
            }
            return {
                ...collection,
                hooks: {
                    ...collection.hooks,
                    beforeChange: [
                        ...collection.hooks?.beforeChange ?? [],
                        hook
                    ]
                }
            };
        })
    };
}

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