backend/src/routes/search.js

import { Router } from "express";
import { z } from "zod";
import { searchDocs } from "../services/searchService.js";
import { requireUser } from "../middleware/requireUser.js";

export const searchRouter = Router();

const searchBodySchema = z.object({
  query: z.string().min(1),
  topK: z.number().int().positive().optional()
});

searchRouter.post("/", requireUser, async (req, res, next) => {
  try {
    const body = searchBodySchema.parse(req.body);
    const results = await searchDocs({
      query: body.query,
      topK: body.topK
    });
    res.json({ results });
  } catch (err) {
    next(err);
  }
});