import { Router } from 'express';
import { SearchServiceError } from '../services/searchService.js';

export function createSearchRouter(searchService, broadcast) {
  const router = Router();

  router.post('/', async (request, response) => {
    const { question, previousClarification, originalQuestion } = request.body;

    if (!question) {
      response.status(400).json({
        error: 'Missing required field: question',
        example: { question: 'What are the latest developments in AI?' },
      });
      return;
    }

    try {
      const result = await searchService.search(question, previousClarification, originalQuestion);
      response.json(result);
    } catch (error) {
      if (error instanceof SearchServiceError) {
        broadcast(`❌ Error: ${error.message}`, 'error', error.details);
        response.status(error.statusCode).json({ error: error.message });
        return;
      }

      broadcast(`❌ Error: ${error.message}`, 'error', { error: error.stack });
      response.status(500).json({ error: error.message });
    }
  });

  return router;
}