import { json } from '@remix-run/node';
import type { ActionFunctionArgs } from '@remix-run/node';

export async function action({ request }: ActionFunctionArgs) {
  try {
    const formData = await request.formData();
    const url = formData.get('url') as string;

    if (!url) {
      return json({ error: 'URL is required' }, { status: 400 });
    }

    const response = await fetch(url);

    if (!response.ok) {
      throw new Error(`Failed to fetch URL: ${response.status} ${response.statusText}`);
    }

    const html = await response.text();

    // Basic HTML parsing to extract title and content
    const titleMatch = html.match(/<title[^>]*>([^<]+)<\/title>/i);
    const title = titleMatch ? titleMatch[1].trim() : 'No title found';

    // Extract content by removing script and style tags, then getting text content
    const content =
      html
        .replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '')
        .replace(/<style\b[^<]*(?:(?!<\/style>)<[^<]*)*<\/style>/gi, '')
        .replace(/<[^>]+>/g, ' ')
        .replace(/\s+/g, ' ')
        .trim()
        .slice(0, 1000) + '...'; // Limit content length

    return json({
      success: true,
      data: {
        title,
        content,
        url,
      },
    });
  } catch (error) {
    console.error('Web search error:', error);
    return json({ error: error instanceof Error ? error.message : 'Unknown error occurred' }, { status: 500 });
  }
}