Filter RecyclerView on the basis of ItemViewType

I have a fetched a list of Offers (OfferBaseModel). Offers can be of two types Personal or Favourite . Now I want to show these on tab selection

open class OfferBaseModel -> Parent Class
data class PersonalOfferModel(val personalOffer: PersonalOffer) : OfferBaseModel()
data class FavoriteOfferModel(val product: Product) : OfferBaseModel() 

I have to use same RecyclerView for both the items. If I click on PersonOffer Tab. RecyclerView should filter only PersonalOfferItemViewType and when I click on FavouriteOffer Tab it should show only FavouriteItemViewType. And when I cick on the third tab(All) . It should show both type of data

I have to filter the same list as I have to tracked the offer viewed once in any tab.

I don't want to provide new list on tab selection . Only filter on the basis of viewItemType.

All Offer Tab || Favourite Offer Tab || Personal Offer Tab

But RecyclerView under it remains same along with same list provided to it once. Only filter on selection on above tabs.

override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
    when (getItemViewType(position)) {
        TYPE_PERSONAL_SECTION -> (holder as PersonalOfferViewHolder).bind(position)
        TYPE_FAVOURITE_SECTION -> (holder as FavouriteOfferViewHolder).bind(position)
    }
}

override fun getItemViewType(position: Int): Int {
    return if (sections[position].shopSectionEntity.styling == "SecondarySection") {
        TYPE_PERSONAL_SECTION
    } else {
        TYPE_FAVOURITE_SECTION
    }
}

As I have created a TrackableRecyclerView. Each item must be tracked once. I mean if a Personal Offer is viewed in Personal Offer Tab. It's analytics tracking shouldn't be called again If same product is displayed in All Section Tab

It is very difficult to make inferences from existing codes, but I would like to offer some logic.

enum class ViewType {
    PERSONAL, FAVOURITE, BOTH
} // your condition view

var currentViewType = ViewType.BOTH // default view

fun updateViewType(viewType: ViewType) {
    currentViewType = viewType
    notifyDataSetChanged() // or diffUtil
}

override fun getItemViewType(position: Int): Int {
    return when (currentViewType) {
        ViewType.PERSONAL -> if (sections[position] is PersonalOfferModel) {
            TYPE_PERSONAL_SECTION
        } else -1
        ViewType.FAVOURITE -> if (sections[position] is FavoriteOfferModel) {
            TYPE_FAVOURITE_SECTION
        } else -1
        else -> if (sections[position] is PersonalOfferModel) {
            TYPE_PERSONAL_SECTION
        } else if (sections[position] is FavoriteOfferModel) {
            TYPE_FAVOURITE_SECTION
        } else -1
    }
}

and your condition buttons

firstButton.setOnClickListener {
    adapter.updateViewType(ViewType.PERSONAL)
}

secondButton.setOnClickListener {
    adapter.updateViewType(ViewType.FAVOURITE)
}

thirdButton.setOnClickListener {
    adapter.updateViewType(ViewType.BOTH)
}