const router = module.exports = require('express-promise-router')()
const parseJSON = require('body-parser').json()
const db = require('../db')
const ensureAdmin = require('./middleware/ensureAdmin')

const validate = require('./middleware/validators')

router.get('/', async (req, res) => {
  const categories = await db.category.findAll()

  res.json(categories)
})

router.get('/by-slug/:slug', async (req, res) => {
  const category = await db.category.findBySlug(req.params.slug)

  res.json(category)
})

const newCategoryValidators = [
  validate.validUrlSlug('urlslug'),
  validate.requiredString('name'),
  validate.requiredString('description'),
  validate.handleApiError
]
router.post('/', ensureAdmin, parseJSON, newCategoryValidators, async (req, res) => {
  const category = await db.category.create(
    req.body.name,
    req.body.urlslug,
    req.body.description
  )

  res.json(category)
})

router.post('/:uuid', ensureAdmin, parseJSON, newCategoryValidators, async (req, res) => {
  const category = await db.category.update(
    req.params.uuid,
    req.body.name,
    req.body.urlslug,
    req.body.description
  )

  res.json(category)
})

router.delete('/:uuid', ensureAdmin, async (req, res) => {
  const categories = await db.category.delete(req.params.uuid)
  res.json(categories)
})

router.put('/:category_uuid/items/:item_uuid', ensureAdmin, async (req, res) => {
  const category = await db.category.addItem(req.params.category_uuid, req.params.item_uuid);
  res.json(category)
})

router.delete('/:category_uuid/items/:item_uuid', ensureAdmin, async (req, res) => {
  const category = await db.category.removeItem(req.params.category_uuid, req.params.item_uuid);
  res.json(category)
})

router.put('/:parent_uuid/children/:child_uuid', ensureAdmin, async (req, res) => {
  const category = await db.category.addCategory(req.params.parent_uuid, req.params.child_uuid);
  res.json(category)
})

router.delete('/:parent_uuid/children/:child_uuid', ensureAdmin, async (req, res) => {
  const category = await db.category.removeCategory(req.params.parent_uuid, req.params.child_uuid);
  res.json(category)
})