/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import type { JSX } from 'react';
import Head from '@docusaurus/Head';

interface FAQItem {
  question: string;
  answer: string;
}

interface FAQSchemaProps {
  faqs: FAQItem[];
}

/**
 * Component that injects FAQPage JSON-LD structured data
 * Use this on FAQ pages to enable rich snippets in search results
 *
 * @example
 * <FAQSchema faqs={[
 *   { question: "What is Superset?", answer: "Apache Superset is..." },
 *   { question: "How do I install it?", answer: "You can install via..." }
 * ]} />
 */
export default function FAQSchema({
  faqs,
}: FAQSchemaProps): JSX.Element | null {
  // FAQPage schema requires a non-empty mainEntity array per schema.org specs
  if (!faqs || faqs.length === 0) {
    return null;
  }

  const schema = {
    '@context': 'https://schema.org',
    '@type': 'FAQPage',
    mainEntity: faqs.map(faq => ({
      '@type': 'Question',
      name: faq.question,
      acceptedAnswer: {
        '@type': 'Answer',
        text: faq.answer,
      },
    })),
  };

  return (
    <Head>
      <script type="application/ld+json">{JSON.stringify(schema)}</script>
    </Head>
  );
}
