import User from './user.model.js'
import formidable from 'formidable'
import extend from 'lodash/extend.js'
import fs from 'fs'

const create = async (req, res) => {
  const user = new User(req.body)
  try {
    await user.save()
    return res.json({
      message: 'Successfully signed up!'
    })
  } catch (error) {
    return res.status(400).json({
      error: 'User creation error'
    })
  }
}

const list = async (req, res) => {
  try {
    let users = await User.find().select('name email updated created').exec()
    return res.json(users)
  } catch (error) {
    return res.status(400).json({
      error: 'Users not found'
    })
  }
}

const read = (req, res) => {
  req.profile.hashedPassword = undefined
  req.profile.salt = undefined
  return res.json(req.profile)
}

const update = (req, res) => {
  let form = new formidable.IncomingForm()
  form.keepExtensions = true
  form.parse(req, async (err, fields, files) => {
    if (err) {
      return res.status(400).json({
        error: 'Photo could not be uploaded'
      })
    }
    let user = req.profile
    user = extend(user, fields)
    user.updated = new Date()
    if (files.photo) {
      user.photo.data = fs.readFileSync(files,photo.path)
      user.photo.contentType = files.photo.type
    }

    try {
      await user.save()
      user.hashedPassword = undefined
      user.salt = undefined
      res.json(user)
    } catch (error) {
      return res.status(400).json({
        error: 'User save error'
      })
    }
  })
}

const remove = async (req, res) => {
  try {
    let user = req.profile
    let deletedUser = await user.remove()
    deletedUser.hashedPassword = undefined
    deletedUser.salt = undefined
    res.json(deletedUser)
  } catch (error) {
    return res.status(400).json({
      error: 'User delete error'
    })
  }
}

const isInstructor = (req, res, next) => {
  const instructor = req.profile && req.profile.instructor
  if (!instructor) {
    return res.status(403).json({
      error: 'User is not an instructor'
    })
  }
  next()
}

const userById = async (req, res, next, id) => {
  // console.log('req.body in userById', req.body);
  try {
    let user = await User.findById(id)
      .exec()
    if (!user) {
      return res.status(400).json({
        error: 'User not found'
      })
    }
    req.profile = user
    next()
  } catch (error) {
    return res.status(400).json({
      error: 'Could not retrieve user'
    })
  }
}

export default {
  create,
  list,
  read,
  update,
  remove,
  isInstructor,
  userById,
}