permission and record a video

package com.example.teacher.mypermissionandvideo

import android.app.Activity
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.provider.MediaStore
import android.support.v4.app.ActivityCompat
import android.support.v4.content.ContextCompat
import android.util.Log
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_main.*
import java.util.jar.Manifest
import kotlin.math.log

class MainActivity : AppCompatActivity() {

    lateinit var context: Context
    val VIDEO_REQUEST_CODE = 100
    val VIDEO_REC = 101

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setPointer()

    }

    private fun setPointer() {
        if (!setupPermissions()) {
            makeRequest()
        }
        this.context = this
        //check if we have a camera
        if (!hasCamera())
        {
            Toast.makeText(context,"You don't have a camera", Toast.LENGTH_LONG).show()
            return
        }
        btnRec.setOnClickListener {
            val intent = Intent(MediaStore.ACTION_VIDEO_CAPTURE)
            startActivityForResult(intent,VIDEO_REC)
        }
    }

    private fun hasCamera():Boolean{
        return packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY)
    }
    private fun makeRequest() {
        //request permission
        ActivityCompat.requestPermissions(this, arrayOf(android.Manifest.permission.CAMERA), VIDEO_REQUEST_CODE)
    }

    private fun setupPermissions(): Boolean {
        val permission = ContextCompat.checkSelfPermission(this, android.Manifest.permission.CAMERA)

        //check if we have a permission
        if (permission != PackageManager.PERMISSION_GRANTED) {
            Log.e("permission", "Permission was denied")
            return false
        }
        return true
    }

    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        when (requestCode) {
            VIDEO_REQUEST_CODE -> {
                if (grantResults.isEmpty() || grantResults[0] != PackageManager.PERMISSION_GRANTED) {
                    Log.e("permission", "Permission was denied")
                } else {
                    Log.e("permission", "Permission was granted")
                }
            }
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) {

        if (requestCode == VIDEO_REC)
        {
            if (resultCode == Activity.RESULT_OK)
            {
                val videoUri = data.data
                Toast.makeText(context,"The video location:"+videoUri,Toast.LENGTH_LONG).show()
                Log.e("Alex o shit","inaal alex o. : "+videoUri)
            }
            else if (resultCode == Activity.RESULT_CANCELED){
                Toast.makeText(context,"User canceled video recording",Toast.LENGTH_LONG).show()
            }
            else
            {
                Toast.makeText(context,"Error in recording video",Toast.LENGTH_LONG).show()
            }
        }
    }
}