class AuthActivity : AppCompatActivity() {
    lateinit var tlTabs: TabLayout
    lateinit var vpPager: ViewPager
    lateinit var tabReg: Fragment
    lateinit var tabAuth: Fragment

    var savedLogin: String
        get() {
            return getPreferences(Context.MODE_PRIVATE).getString(PREF_LOGIN, "")!!
        }
        set(value) {
            val sPref = getPreferences(Context.MODE_PRIVATE)
            val ed = sPref.edit()
            ed.putString(PREF_LOGIN, value)
            ed.apply()
        }
    var savedPass: String
        get() {
            return getPreferences(Context.MODE_PRIVATE).getString(PREF_PASS, "")!!
        }
        set(value) {
            val sPref = getPreferences(Context.MODE_PRIVATE)
            val ed = sPref.edit()
            ed.putString(PREF_PASS, value)
            ed.apply()
        }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        configViews()
    }

    private fun configViews() {
        setContentView(R.layout.activity_auth)

        tlTabs = find(R.id.tlTabs)
        vpPager = find(R.id.vpPager)
        tabReg = TabReg()
        tabAuth = TabAuth()
        val vpAdapter = ViewPagerAdapter(supportFragmentManager)
        vpAdapter.addFragment(tabReg, "Регистрация")
        vpAdapter.addFragment(tabAuth, "Вход")
        vpPager.adapter = vpAdapter
        tlTabs.setupWithViewPager(vpPager)
    }

    override fun onResume() {
        super.onResume()

        tabReg.find<Button>(R.id.btnReg).setOnClickListener {
            with (tabReg) {
                val login = find<EditText>(R.id.etLoginReg).text.toString()
                val pass = find<EditText>(R.id.etPassReg).text.toString()
                val pass2 = find<EditText>(R.id.etPassReg2).text.toString()

                if (login.length == 10 && pass.length in 6..20 && pass == pass2) {
                    savedLogin = login
                    savedPass = pass
                    Log.d(TAG, "saved/updated $savedLogin $savedPass")
                } else {
                    when {
                        login.length != 10 -> Toast.makeText(this@AuthActivity, "Номер введен неверно", Toast.LENGTH_SHORT).show()
                        pass.length < 6 -> Toast.makeText(this@AuthActivity, "Пароль слишком короткий", Toast.LENGTH_SHORT).show()
                        pass.length > 20 -> Toast.makeText(this@AuthActivity, "Пароль слишком длинный", Toast.LENGTH_SHORT).show()
                        pass2 != pass -> Toast.makeText(this@AuthActivity, "Повторите пароль", Toast.LENGTH_SHORT).show()
                        else -> Toast.makeText(this@AuthActivity, "Введите логин (номер телефона 10 цифр) и пароль", Toast.LENGTH_SHORT).show()
                    }
                    Log.d(TAG, "not saved/not updated (login:$login, pass:$pass, pass2:$pass2)")
                }
            }
        }
        tabAuth.find<Button>(R.id.btnEnter).setOnClickListener {
            with (tabAuth) {
                if (savedLogin.isNotEmpty() && savedPass.isNotEmpty()) {
                    find<EditText>(R.id.etLoginEnter).setText(savedLogin)
                    find<EditText>(R.id.etPassEnter).setText(savedPass)
                }
            }
            Log.d(TAG, "taken $savedLogin $savedPass")
        }
    }

    companion object {
        private const val TAG = "AuthActivity"
        private const val PREF_LOGIN = "s_login"
        private const val PREF_PASS = "s_pass"
    }
}