gistfile1.txt

exports.addItem = functions.https.onRequest((req, res) => {
 return cors(req, res, () => {
  if(req.method !== 'POST') {
   return res.status(401).json({
    message: 'Not allowed'
   })
  }
  console.log(req.body)
  const item = req.body.item
  database.push({ item });
  let items = [];
  return database.on('value', (snapshot) => {
   snapshot.forEach((item) => {
    items.push({
     id: item.key,
     items: item.val().item
    });
   });
   res.status(200).json(items)
  }, (error) => {
   res.status(error.code).json({
    message: `Something went wrong. ${error.message}`
   })
  })
 })
})