/**
 * Racks Routes
 * All routes related to rack management
 */

const express = require('express');
const router = express.Router();
const db = require('../db');

/**
 * GET /api/racks
 * Get all racks for a project
 */
router.get('/', (req, res, next) => {
  try {
    const projectId = req.query.projectId || 1;
    const racks = db.getAllRacks(projectId);
    res.json(racks);
  } catch (err) {
    next(err);
  }
});

/**
 * GET /api/racks/next-name
 * Get next available rack name for a prefix
 */
router.get('/next-name', (req, res, next) => {
  try {
    const projectId = req.query.projectId || 1;
    const prefix = req.query.prefix || 'RACK';
    const name = db.getNextRackName(projectId, prefix);
    res.json({ name });
  } catch (err) {
    next(err);
  }
});

/**
 * POST /api/racks
 * Create a new rack
 */
router.post('/', (req, res, next) => {
  try {
    const { projectId, name, x, y } = req.body;

    // Validation
    if (!name || name.trim().length === 0) {
      return res.status(400).json({ error: 'Rack name is required' });
    }
    if (typeof x !== 'number' || typeof y !== 'number') {
      return res.status(400).json({ error: 'Valid x and y coordinates are required' });
    }

    const rack = db.createRack(projectId || 1, name.trim(), x, y);
    res.status(201).json(rack);
  } catch (err) {
    next(err);
  }
});

/**
 * PUT /api/racks/:id/position
 * Update rack position
 */
router.put('/:id/position', (req, res, next) => {
  try {
    const { x, y } = req.body;

    if (typeof x !== 'number' || typeof y !== 'number') {
      return res.status(400).json({ error: 'Valid x and y coordinates are required' });
    }

    db.updateRackPosition(req.params.id, x, y);
    res.json({ success: true });
  } catch (err) {
    next(err);
  }
});

/**
 * PUT /api/racks/:id/name
 * Update rack name
 */
router.put('/:id/name', (req, res, next) => {
  try {
    const { name } = req.body;

    if (!name || name.trim().length === 0) {
      return res.status(400).json({ error: 'Rack name is required' });
    }

    db.updateRackName(req.params.id, name.trim());
    res.json({ success: true });
  } catch (err) {
    next(err);
  }
});

/**
 * DELETE /api/racks/:id
 * Delete a rack
 */
router.delete('/:id', (req, res, next) => {
  try {
    db.deleteRack(req.params.id);
    res.json({ success: true });
  } catch (err) {
    next(err);
  }
});

module.exports = router;