backend/routes/validate.js

const express = require('express');
const { validateIdea } = require('../services/ai');

const router = express.Router();

router.post('/', async (req, res) => {
  try {
    const { idea, targetAudience, monetization } = req.body;

    if (!idea || idea.trim().length < 20) {
      return res.status(400).json({ error: 'Describe your idea in at least 20 characters' });
    }

    const analysis = await validateIdea(idea.trim(), targetAudience, monetization);
    res.json({ success: true, analysis });
  } catch (err) {
    console.error('Validation error:', err);
    res.status(500).json({ error: err.message || 'Failed to validate idea' });
  }
});

module.exports = router;