const express  = require('express');
const router   = express.Router();
const settings = require('../settings');
const { notify } = require('../notify');

// GET /api/settings
router.get('/', (req, res) => {
  res.json(settings.get());
});

// PUT /api/settings
router.put('/', (req, res) => {
  try {
    const updated = settings.update(req.body);
    res.json(updated);
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

// POST /api/settings/test-notification
router.post('/test-notification', async (req, res) => {
  // Use the payload from the request body so the user can test
  // before saving (the frontend sends the current form values)
  const { url, token, priority } = req.body;

  if (!url || !token) {
    return res.status(400).json({ error: 'URL and token are required' });
  }

  const base = url.replace(/\/$/, '');
  try {
    const response = await fetch(`${base}/message?token=${encodeURIComponent(token)}`, {
      method:  'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        title:    '🦥 Sloth Manager — Test',
        message:  'Gotify notifications are working correctly.',
        priority: priority ?? 5,
      }),
    });

    if (!response.ok) {
      const text = await response.text().catch(() => '');
      return res.status(502).json({ error: `Gotify returned ${response.status}: ${text}` });
    }

    res.json({ success: true });
  } catch (err) {
    res.status(502).json({ error: `Could not reach Gotify: ${err.message}` });
  }
});

// POST /api/settings/clear-cache
router.post('/clear-cache', (req, res) => {
  try {
    const fs   = require('fs');
    const path = require('path');
    const cachePath = process.env.DB_PATH || path.join(__dirname, '../../dns-cache.json');
    fs.writeFileSync(cachePath, '{}', 'utf8');
    res.json({ success: true });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

module.exports = router;