package sample

import android.arch.lifecycle.MutableLiveData
import android.arch.lifecycle.Observer
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.view.View
import android.widget.Toast
import com.devindi.wallpaper.R

class CounterActivityMvvm : AppCompatActivity() {

    val viewModel = CounterViewModel()

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

        val view = View(this)
        view.id = R.id.increment

        setContentView(view)

        viewModel.counter.observe(this, Observer { t -> Toast.makeText(this@CounterActivityMvvm, "Counter: $t", Toast.LENGTH_SHORT).show() })
        view.setOnClickListener{ viewModel.increment() }
    }
}

class CounterViewModel {

    private val model = CounterRepository()

    val counter = model.counter

    fun increment() {
        model.increment()
    }
}

class CounterRepository {

    val counter = MutableLiveData<Int>()

    init {
        counter.value = 0
    }

    fun increment() {
        counter.value = counter.value!! + 1
    }
}