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import { Hono } from 'hono'; | |
import { z } from 'zod'; | |
import { config } from '../config'; | |
import { cache } from '../services/cache'; | |
const colpaliSearchApp = new Hono(); | |
// Search request schema for GET requests | |
const searchQuerySchema = z.object({ | |
query: z.string().min(1).max(500), | |
ranking: z.enum(['hybrid', 'colpali', 'bm25']).optional().default('hybrid'), | |
}); | |
// Main search endpoint - matches Next.js /api/colpali-search | |
colpaliSearchApp.get('/', async (c) => { | |
try { | |
const query = c.req.query('query'); | |
const ranking = c.req.query('ranking') || 'hybrid'; | |
const validation = searchQuerySchema.safeParse({ query, ranking }); | |
if (!validation.success) { | |
return c.json({ error: 'Invalid request', details: validation.error.issues }, 400); | |
} | |
const validatedData = validation.data; | |
// Check cache | |
const cacheKey = `search:${validatedData.query}:${validatedData.ranking}`; | |
const cachedResult = cache.get(cacheKey); | |
if (cachedResult) { | |
c.header('X-Cache', 'HIT'); | |
return c.json(cachedResult); | |
} | |
// Proxy to backend /fetch_results endpoint | |
const searchUrl = `${config.backendUrl}/fetch_results?query=${encodeURIComponent(validatedData.query)}&ranking=${validatedData.ranking}`; | |
const response = await fetch(searchUrl); | |
if (!response.ok) { | |
throw new Error(`Backend returned ${response.status}`); | |
} | |
const data = await response.json(); | |
// Cache the result | |
cache.set(cacheKey, data); | |
c.header('X-Cache', 'MISS'); | |
return c.json(data); | |
} catch (error) { | |
console.error('Search error:', error); | |
return c.json({ | |
error: 'Search failed', | |
message: error instanceof Error ? error.message : 'Unknown error' | |
}, 500); | |
} | |
}); | |
export { colpaliSearchApp }; |