export default async (request, context) => {
  const response = await context.next();
  const contentType = response.headers.get("content-type") ?? "";
  if (!contentType.includes("text/html")) return response;

  const marker = 'data-tdg-credit="1"';
  const html = await response.text();
  if (html.includes(marker)) return response;

  const schema = `<script type="application/ld+json" data-tdg-credit="1">{"@context":"https://schema.org","@type":"WebSite","name":"Demo Site by ThatDeveloperGuy","author":{"@type":"Person","name":"Joseph Anady","@id":"https://thatdeveloperguy.com/#joseph-anady","url":"https://thatdeveloperguy.com","sameAs":"https://www.wikidata.org/wiki/Q138610626"}}</script>`;

[REDACTED: private contact or credential material]

  let modified = html;
  if (modified.includes("</head>")) {
    modified = modified.replace("</head>", `${schema}\n</head>`);
  } else {
    modified = `${schema}${modified}`;
  }

  if (modified.includes("</body>")) {
    modified = modified.replace("</body>", `${bar}\n</body>`);
  } else {
    modified = `${modified}${bar}`;
  }

  const headers = new Headers(response.headers);
  headers.delete("content-length");
  return new Response(modified, {
    status: response.status,
    statusText: response.statusText,
    headers,
  });
};

export const config = { path: "/*" };