GroupChannelChatActivity.kt

class GroupChannelChatActivity : AppCompatActivity(), GroupChannelChatView, GroupChannelChatAdapter.OnItemClickListener {

    private val EXTRA_CHANNEL_URL = "EXTRA_CHANNEL_URL"

    @Inject
    lateinit var presenter: GroupChannelChatPresenterImpl

    private lateinit var recyclerView: RecyclerView

    private lateinit var adapter: GroupChannelChatAdapter

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_gchat)

        BaseApp.app(this).injector.inject(this)

        presenter.setView(this)

        setListeners()
        setUpRecyclerView()

    }

    override fun onResume() {
        super.onResume()
        presenter.onResume(this, getChannelURl())
    }

    override fun onPause() {
        super.onPause()
        presenter.onPause()
    }

    override fun insert(messages: MutableList<BaseMessage>) {
        edit_gchat_message.setText("")
        adapter.insert(messages)
        recyclerView.scrollToPosition(0)
    }

    override fun update(messages: MutableList<BaseMessage>) {
        adapter.update(messages)
    }

    override fun remove(messages: MutableList<BaseMessage>) {
        adapter.remove(messages)
    }

    override fun markAllRead() {
        adapter.markAsRead()
    }

    override fun clear() {
        adapter.clear()
    }

    private fun setListeners() {
        button_gchat_share.setOnClickListener {
            presenter.shareLocation(this)
        }
    }


    private fun setUpRecyclerView() {
        adapter = GroupChannelChatAdapter(this, this)
        recyclerView = recycler_gchat
        recyclerView.adapter = adapter
        val layoutManager = androidx.recyclerview.widget.LinearLayoutManager(this)
        layoutManager.reverseLayout = true
        recyclerView.layoutManager = layoutManager
        recyclerView.scrollToPosition(0)

    }
}