const router = module.exports = require('express-promise-router')()
const ensureUser = require('./middleware/ensureUser')
const db = require('../db')

const sendgrid = require('@sendgrid/mail')
sendgrid.setApiKey(process.env.SENDGRID_KEY)

router.get('/links', ensureUser, async (req, res) => {
  const links = await db.user.getOpenEmailLinks(req.user.uuid)

  res.json(links.map(stripLink))
})

router.post('/', ensureUser, async (req, res) => {
  if(req.user.time_email_confirmed)
    return res.status(400).json({errors: [{
      param: 'email',
      msg: 'Email address already verified'
    }]})

  const confirmUrl = await db.user.createLoginLink(req.user.uuid)

  const msg = {
    to: req.user.email,
    from: {email: 'registration@email.societyofsocks.us', name: 'Society of Socks'},
    templateId: 'd-33407f1dd1b14b7b84dd779511039c95',
    dynamic_template_data: {
      confirmUrl: confirmUrl
    }
  };

  await sendgrid.send(msg);

  res.json({sent: true})
})

router.get('/confirm/:uuid', ensureUser, async (req, res) => {
  if(!req.query || !req.query.key)
    return res.redirect('/account/email/invalid')

  const validLink = await db.user.verifyLoginLink(req.params.uuid, req.query.key)
  if(!validLink)
    return res.redirect('/account/email/invalid')

  await db.user.markLoginLinkUsed(validLink.uuid)
  await db.user.markEmailVerified(validLink.user_uuid)

  return res.redirect('/account')
})

function stripLink(link) {
  return {
    ...link,
    login_hash: undefined
  }
}