videoPlayComplete_step1.js

exports.LINEwebhook = functions.region(region).https.onRequest(async(request, response) => {
   console.log('🚀 Start Webhook!!', request.body )
   
   // Verify Signature
   const verify = await verify_signature(request, response)
   if(!verify) {
      response.status(200).send('Unauthorized')
      return
   }

   // Verify Events request must array
   // Handle events
   
   response.status(200).send("success")
   return
});

const verify_signature = (req, res) => {
   const crypto = require('crypto')
   const text = JSON.stringify(req.body)
   const signature = crypto.createHmac('SHA256', channelSecret).update(text).digest('base64').toString()
   if (signature !== req.headers['x-line-signature']) {
       console.log('🧨Attack!!', text)
       return false
   } else {
      return true
   }
}