const { ObjectId } = require('mongodb')
// const activities = ['Create', ]
const pub = require('../pub')

function validateObject (object) {
  if (object && object.id) {
    object['@context'] = object['@context'] || pub.consts.ASContext
    return true
  }
}

function validateActivity (object) {
  if (object && object.id && object.actor) {
    return true
  }
}

module.exports.activity = function activity (req, res, next) {
  // TODO real validation
  if (!validateActivity(req.body)) {
    return res.status(400).send('Invalid activity')
  }
  next()
}

module.exports.outboxActivity = function outboxActivity (req, res, next) {
  if (!validateActivity(req.body)) {
    if (!validateObject(req.body)) {
      return res.status(400).send('Invalid activity')
    }
    const newID = new ObjectId()
    req.body = {
      _id: newID,
      '@context': pub.consts.ASContext,
      type: 'Create',
      id: `https://${req.app.get('domain')}/o/${newID.toHexString()}`,
      actor: req.body.attributedTo,
      object: req.body,
      published: new Date().toISOString(),
      to: req.body.to,
      cc: req.body.cc,
      bcc: req.body.cc,
      audience: req.body.audience
    }
  }
  next()
}