OrganicFragment

package com.pupukkaltim.leader.view.fragment

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.fragment.app.Fragment
import androidx.lifecycle.Observer
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.LinearLayoutManager
import com.pupukkaltim.leader.R
import com.pupukkaltim.leader.adapter.OrganicAdapter
import com.pupukkaltim.leader.viewmodel.OrganicViewModel
import kotlinx.android.synthetic.main.fragment_organic.*

class OrganicFragment : Fragment() {
    private lateinit var adapter: OrganicAdapter
    private lateinit var organicViewModel: OrganicViewModel

    companion object {
        const val EXTRA_ORGANIC = "extra_organic"
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_organic, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        adapter = OrganicAdapter()
        showRecyclerView()

        organicViewModel = ViewModelProvider(this, ViewModelProvider.NewInstanceFactory()).get(OrganicViewModel::class.java)
        if(arguments != null) {

            showLoading(true)
            organicViewModel.setBawahanOrganic()
        }

        organicViewModel.getBawahanOrganic().observe(viewLifecycleOwner, Observer { organic ->
            if(organic != null){
                adapter.setData(organic)
                showLoading(false)
            }
        })

        organicViewModel.errorMessage.observe(viewLifecycleOwner, Observer {
            it.getContentIfNotHandled()?.let { it ->
                Toast.makeText(activity, it, Toast.LENGTH_LONG).show()
                showLoading(false)
            }
        })

    }

    private fun showRecyclerView() {
        rv_organic.layoutManager = LinearLayoutManager(context)
        rv_organic.adapter = adapter

        adapter.notifyDataSetChanged()
    }

    private fun showLoading(state: Boolean) {
        if(state){
            progress_bar.visibility = View.VISIBLE
        } else {
            progress_bar.visibility = View.GONE
        }
    }
}