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import type { AppLoadContext, EntryContext } from '@remix-run/cloudflare';
import { RemixServer } from '@remix-run/react';
import { isbot } from 'isbot';
import { renderToReadableStream } from 'react-dom/server';

export default async function handleRequest(
  request: Request,
  responseStatusCode: number,
  responseHeaders: Headers,
  remixContext: EntryContext,
  _loadContext: AppLoadContext,
) {
  const body = await renderToReadableStream(<RemixServer context={remixContext} url={request.url} />, {
    signal: request.signal,
    onError(error: unknown) {
      console.error(error);
      responseStatusCode = 500;
    },
  });

  if (isbot(request.headers.get('user-agent') || '')) {
    await body.allReady;
  }

  responseHeaders.set('Content-Type', 'text/html');

  responseHeaders.set('Cross-Origin-Embedder-Policy', 'require-corp');
  responseHeaders.set('Cross-Origin-Opener-Policy', 'same-origin');

  return new Response(body, {
    headers: responseHeaders,
    status: responseStatusCode,
  });
}