MainActivity

package com.tiyas.mygithubapp.ui

import android.annotation.SuppressLint
import android.content.Context
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.view.inputmethod.InputMethodManager
import android.widget.SearchView
import androidx.lifecycle.ViewModelProvider
import androidx.recyclerview.widget.LinearLayoutManager
import com.tiyas.mygithubapp.adapter.UserAdapter
import com.tiyas.mygithubapp.data.Users
import com.tiyas.mygithubapp.databinding.ActivityMainBinding
import com.tiyas.mygithubapp.viewModel.MainViewModel

class MainActivity : AppCompatActivity() {

    private lateinit var  mainBinding : ActivityMainBinding
    private  lateinit var  viewModel : MainViewModel
    private lateinit var  userAdapter : UserAdapter
    private  lateinit var listUser : ArrayList<Users>

    @SuppressLint("NotifyDataSetChanged")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        mainBinding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(mainBinding.root)

        setUserAdapter()
        showProgressBar(true)
        setViewModel()

        mainBinding.searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener{
            override fun onQueryTextSubmit(query : String): Boolean {
                showProgressBar(true)
                viewModel.setSearchUsers(this@MainActivity, query)
                closeKeyboard()
                return true
            }

            override fun onQueryTextChange(newText : String): Boolean {
                return false
            }

        })
    }

    private fun closeKeyboard() {
      val view : View? = this.currentFocus

        if(view != null ){
            val iMM : InputMethodManager =
                getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
            iMM.hideSoftInputFromWindow(view.windowToken, 0)
        }
    }

    private fun setViewModel() {
        viewModel = ViewModelProvider(this, ViewModelProvider.NewInstanceFactory()).get(
            MainViewModel::class.java
        )
        if(viewModel.getSearchUsers().value == null){
            viewModel.setSearchUsers(this, "")
        }
        viewModel.getSearchUsers().observe(this,{
            users -> if(users != null){
                listUser = users
            userAdapter.setData(listUser)
            showProgressBar(false)
        }
        } )
    }

    private fun showProgressBar(b: Boolean) {
        if (b){
            mainBinding.progressBar.visibility = View.VISIBLE
        } else {
            mainBinding.progressBar.visibility = View.GONE
        }
    }

    private fun setUserAdapter() {
        userAdapter = UserAdapter()
        userAdapter.notifyDataSetChanged()
        mainBinding.rvMain.apply {
            setHasFixedSize(true)
            adapter = userAdapter
            layoutManager = LinearLayoutManager(this@MainActivity)
        }

    }
}