import { Hono } from 'hono';
import { cache } from '../services/cache';

const querySuggestionsApp = new Hono();

// Static suggestions for now (can be replaced with Vespa query later)
const staticSuggestions = [
  'linqto bankruptcy',
  'linqto filing date',
  'linqto creditors',
  'linqto assets',
  'linqto liabilities',
  'linqto chapter 11',
  'linqto docket',
  'linqto plan',
  'linqto disclosure statement',
  'linqto claims',
];

// Query suggestions endpoint
querySuggestionsApp.get('/', async (c) => {
  try {
    const query = c.req.query('query');
    
    if (!query) {
      return c.json({ suggestions: [] });
    }

    // Check cache
    const cacheKey = `suggestions:${query}`;
    const cachedSuggestions = cache.get(cacheKey);
    
    if (cachedSuggestions) {
      c.header('X-Cache', 'HIT');
      return c.json(cachedSuggestions);
    }

    // Filter static suggestions based on query
    const lowerQuery = query.toLowerCase();
    const filteredSuggestions = staticSuggestions
      .filter(s => s.toLowerCase().includes(lowerQuery))
      .slice(0, 5);

    const result = { suggestions: filteredSuggestions };
    
    // Cache for 5 minutes
    cache.set(cacheKey, result, 300);
    c.header('X-Cache', 'MISS');

    return c.json(result);
  } catch (error) {
    console.error('Suggestions error:', error);
    return c.json({ 
      error: 'Failed to fetch suggestions', 
      suggestions: [] 
    }, 500);
  }
});

export { querySuggestionsApp };