class MainFragment : android.app.Fragment() {
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    lateinit var navigationView: BottomNavigationView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
           // param1 = it.getString(ARG_PARAM1)
           // param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
                              savedInstanceState: Bundle?): View? {
        // Inflate the layout for this fragment
        var view : View = inflater.inflate(R.layout.fragment_main, container, false)
        navigationView = view.findViewById(R.id.navigation)
        navigationView.setOnNavigationItemReselectedListener{mOnNavigationItemSelectedListener}



        return view
    }

    private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
        when (item.itemId) {
            R.id.navigation_daylifeed -> {
                //message.setText(R.string.title_home)
                openFragment("DailyFeedFragment")
                return@OnNavigationItemSelectedListener true
            }
            R.id.navigation_notices -> {
                //message.setText(R.string.title_dashboard)
                openFragment("NoticesFragment")
                return@OnNavigationItemSelectedListener true
            }
            R.id.navigation_attendence -> {
                //message.setText(R.string.title_notifications)
                openFragment("AttendenceFragment")
                return@OnNavigationItemSelectedListener true
            }
        }
        false
    }



    fun openFragment(fragment: String) {
        val manager = fragmentManager

        val transaction = manager.beginTransaction()
        // animation
       // transaction.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out)
        if(fragment.equals("DailyFeedFragment")) {
            transaction.replace(R.id.frame_container, DailyFeedFragment.newInstance("", "")) // newInstance() is a static factory method.
            transaction.addToBackStack(null)
            transaction.commit()
        }
        else if(fragment.equals("NoticesFragment")){
            transaction.replace(R.id.frame_container, NoticesFragment.newInstance("", "")) // newInstance() is a static factory method.
            transaction.addToBackStack(null)
            transaction.commit()
        }
        else{
            transaction.replace(R.id.frame_container, AttendenceFragment.newInstance("", "")) // newInstance() is a static factory method.
            transaction.addToBackStack(null)
            transaction.commit()
        }
    }


    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment MainFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
                MainFragment().apply {
                    arguments = Bundle().apply {
                      //  putString(ARG_PARAM1, param1)
                      //  putString(ARG_PARAM2, param2)
                    }
                }
    }
}