BaseFragment.kt

package com.example.mvvm.ui.base

import android.annotation.TargetApi
import android.content.Context
import android.graphics.Color
import android.os.Build
import android.os.Bundle
import android.view.View
import android.view.inputmethod.InputMethodManager
import android.widget.TextView
import androidx.annotation.NonNull
import androidx.core.content.ContextCompat
import androidx.fragment.app.Fragment
import com.google.android.gms.auth.api.signin.GoogleSignInClient
import com.google.android.material.snackbar.Snackbar
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.database.FirebaseDatabase
import com.example.mvvm.R
import com.example.mvvm.Service
import com.example.mvvm.ui.dialogs.ConfirmationRepositoryImpl
import com.example.mvvm.utils.LocalData
import javax.inject.Inject

abstract class BaseFragment<VM> : Fragment() {
    @Inject
    lateinit var firebaseAuth: FirebaseAuth
    @Inject
    lateinit var firebaseDatabase: FirebaseDatabase
    @Inject
    lateinit var confirmationRepositoryImpl: ConfirmationRepositoryImpl
    @Inject
    lateinit var isMIUI: LocalData

    private lateinit var service: Service
    lateinit var googleSignInClient: GoogleSignInClient

    var title: String = ""

    //fun <T : BaseKey> getKey(): T = requireArguments.getParcelable("KEY")!!

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        service = Service()
    }

    @NonNull
    fun <T : BaseKey<*>> getKey(): T {
        val args = arguments ?: throw IllegalStateException("Fragment cannot have null arguments.")
        return args.getParcelable("KEY") ?: throw IllegalStateException("Fragment cannot have null key")
    }

    abstract fun bindViewModel(viewModel: VM)

    @TargetApi(Build.VERSION_CODES.CUPCAKE)
    fun View.hideKeyboard() {
        val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
        imm.hideSoftInputFromWindow(windowToken, 0)
    }

    fun snackbar(message: String) {
        val snackbar = Snackbar.make(activity!!.window.decorView.rootView, "", Snackbar.LENGTH_LONG)
        val snackbarView = snackbar.view
        val tv = snackbarView.findViewById(com.google.android.material.R.id.snackbar_text) as TextView

        when (message) {
            "reset-success" -> {
                snackbar.setText(getString(R.string.reset_success))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarSuccess))
            }
            "reset-error" -> {
                snackbar.setText(getString(R.string.reset_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "log-in-error" -> {
                snackbar.setText(getString(R.string.log_in_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "verify-account" -> {
                snackbar.setText(getString(R.string.verify_account))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "verification-error" -> {
                snackbar.setText(getString(R.string.verification_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "register-success" -> {
                snackbar.setText(getString(R.string.register_success))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarSuccess))
            }
            "register-error" -> {
                snackbar.setText(getString(R.string.register_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "register-password-error" -> {
                snackbar.setText(getString(R.string.register_password_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "invalid-password" -> {
                snackbar.setText(getString(R.string.invalid_password))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "already-in-use" -> {
                snackbar.setText(getString(R.string.already_in_use))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "empty" -> {
                snackbar.setText(getString(R.string.empty))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "address-error" -> {
                snackbar.setText(getString(R.string.address_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            "system-error" -> {
                snackbar.setText(getString(R.string.system_error))
                tv.setTextColor(Color.WHITE)
                snackbarView.setBackgroundColor(ContextCompat.getColor(context!!, R.color.snackbarError))
            }
            else -> {

            }
        }
        snackbar.show()
    }
}