import { generateIndex } from './render_templates.ts';
import { redirectNext } from './next.ts';
import { redirectPrevious } from './previous.ts';
import { redirectRandom } from './random.ts';

export function handleFunctions(req: Request) {
  const url = new URL(req.url);

  switch (url.pathname) {
    case '/next': {
      return redirectNext(req);
    }

    case '/previous': {
      return redirectPrevious(req);
    }

    case '/random': {
      return redirectRandom(req);
    }
  }

  return undefined;
}

if (import.meta.main) {
  const index = generateIndex();

  Deno.serve({ hostname: '127.0.0.1' }, (req) => {
    const funcResp = handleFunctions(req);

    if (funcResp !== undefined) {
      return funcResp;
    }

    const url = new URL(req.url);
    if (url.pathname === '/') {
      return new Response(index, {
        status: 200,
        headers: {
          'content-type': 'text/html',
        },
      });
    }

    return new Response(null, {
      status: 404,
    });
  });
}