// Copyright (c) 2026 Gordon Bolton. MIT License.
const express = require('express');
const axios = require('axios');
const router = express.Router();
const requireAuth = require('../middleware/requireAuth');
const sanitizeError = require('../utils/sanitizeError');
const { getSABnzbdInstances } = require('../utils/config');

// Helper to get first SABnzbd instance
function getFirstSABnzbdInstance() {
  const instances = getSABnzbdInstances();
  if (!instances || instances.length === 0) {
    return null;
  }
  return instances[0];
}

/**
 * @openapi
 * /api/sabnzbd/queue:
 *   get:
 *     tags: [SABnzbd]
 *     summary: Get SABnzbd queue
 *     description: Proxy to SABnzbd's queue endpoint. Requires authentication.
 *     security:
 *       - CookieAuth: []
 *     responses:
 *       '200':
 *         description: Queue data from SABnzbd
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *       '500':
 *         description: Proxy error
 *         content:
 *           application/json:
 *             schema:
 *               $ref: '#/components/schemas/ErrorResponse'
 */
router.use(requireAuth);

// GET /api/sabnzbd/queue
router.get('/queue', async (req, res) => {
  const instance = getFirstSABnzbdInstance();
  if (!instance) {
    return res.status(503).json({ error: 'SABnzbd not configured' });
  }
  try {
    const response = await axios.get(`${instance.url}/api`, {
      params: {
        mode: 'queue',
        apikey: instance.apiKey,
        output: 'json'
      }
    });
    res.json(response.data);
  } catch (error) {
    res.status(500).json({ error: 'Failed to fetch SABnzbd queue', details: sanitizeError(error) });
  }
});

/**
 * @openapi
 * /api/sabnzbd/history:
 *   get:
 *     tags: [SABnzbd]
 *     summary: Get SABnzbd history
 *     description: Proxy to SABnzbd's history endpoint. Requires authentication.
 *     security:
 *       - CookieAuth: []
 *     parameters:
 *       - name: limit
 *         in: query
 *         schema:
 *           type: integer
 *           default: 50
 *         description: Number of history records to return
 *     responses:
 *       '200':
 *         description: History data from SABnzbd
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 */
// GET /api/sabnzbd/history
router.get('/history', async (req, res) => {
  const instance = getFirstSABnzbdInstance();
  if (!instance) {
    return res.status(503).json({ error: 'SABnzbd not configured' });
  }
  try {
    const response = await axios.get(`${instance.url}/api`, {
      params: {
        mode: 'history',
        apikey: instance.apiKey,
        output: 'json',
        limit: req.query.limit || 50
      }
    });
    res.json(response.data);
  } catch (error) {
    res.status(500).json({ error: 'Failed to fetch SABnzbd history', details: sanitizeError(error) });
  }
});

module.exports = router;