routes.js

const express = require('express')
const router = express.Router()

// GET /questions
// Route for questions collection
router.get('/', (req, res) => res.json({ response: 'You sent me a GET request' }))

// POST /questions
// Route for creating questions
router.post('/', (req, res) => {
  res.json({
    response: 'You sent me a POST request',
    body: req.body,
  })
})

// GET /questions/:id
// Route for specific questions
router.get('/:qID', (req, res) => res.json({ response: `You sent me a GET request for ID ${req.params.qID}` }))

// POST /questions/:id/answers
// Route for creating an answer
router.post('/:qID/answers', (req, res) => {
  res.json({
    response: 'You sent me a POST request to /answers',
    questionId: req.params.qID,
    body: req.body,
  })
})

// PUT /questions/:qID/answers/:aID
// Edit a specific answer
router.put('/:qID/answers/:aID', (req, res) => {
  res.json({
    response: 'You sent me a PUT request to /answers',
    questionId: req.params.qID,
    answerId: req.params.aID,
    body: req.body,
  })
})

// DELETE /questions/:qID/answers/:aID
// Delete a specific answer
router.delete('/:qID/answers/:aID', (req, res) => {
  res.json({
    response: 'You sent me a DELETE request to /answers',
    questionId: req.params.qID,
    answerId: req.params.aID,
  })
})

// POST /questions/:qID/answers/:aID/vote-up
// POST /questions/:qID/answers/:aID/vote-down
// Vote on a specific answer
router.post(
  '/:qID/answers/:aID/vote-:dir',
  (req, res, next) => {
    if (req.params.dir.search(/^(up|down)$/) === -1) {
      const err = new Error('Not Found')
      err.status = 404
      next(err)
    }
    next()
  },
  (req, res) => {
    res.json({
      response: `You sent me a POST request to /vote-${req.params.dir}`,
      questionId: req.params.qID,
      answerId: req.params.aID,
      vote: req.params.dir,
    })
  },
)

module.exports = router