const { Router } = require('express')
const { expressjwt } = require('express-jwt')

const { getAnswer } = require('../../utils/common')

const { ListModel } = require('./model/todo/list')
const { ItemModel } = require('./model/todo/item')
const { TOKEN_KEY } = require('./const')
const { requiredValidate } = require('./utils')

const router = Router()

router.use(expressjwt({ secret: TOKEN_KEY, algorithms: ['HS256'] }))

router.post('/', requiredValidate('title'), async (req, res) => {
  const { title } = req.body
  const userId = req.auth.id

  const list = await ListModel.create({ title, createdBy: userId })

  res.send(getAnswer(null, list))
})

router.get('/list', async (req, res) => {
  const items = await ListModel
    .find({})
    .populate('items')
    .exec()

  res.send(getAnswer(null, items))
})

router.post('/item', requiredValidate('todoId', 'title'), async (req, res) => {
  const { todoId, title } = req.body

  const list = await ListModel.findById(todoId)

  if (!list) {
    throw new Error('list not found')
  }

  const userId = req.auth.id
  const item = await ItemModel.create({ title, createdBy: userId })

  list.items.push(item)
  await list.save()

  res.send(getAnswer(null, item))
})

router.get('/:todoId', async (req, res) => {
  const { todoId } = req.params

  const list = await ListModel.findById(todoId).populate('items').exec()

  if (!list) {
    throw new Error('list not found')
  }

  res.send(getAnswer(null, list))
})


module.exports = router