package com.example.memory

 data class Card(val imageId: Int, val value: Int) {
     var isFaceUp = false
}
package com.example.memory

class Game(private val size: Int) {
    private val images = mutableListOf(
        R.drawable.card_back1,
        R.drawable.card_back2,
        R.drawable.card_back3,
        R.drawable.card_back4,
        R.drawable.card_back5,
        R.drawable.card_back6,
        R.drawable.card_back7,
        R.drawable.card_back8
    )
    val cards = MutableList(size) { Card(images[it / 2], it / 2) }

    fun shuffleCards() {
        cards.shuffle()
    }

    fun checkCards(firstIndex: Int, secondIndex: Int): Boolean {
        return cards[firstIndex].imageId == cards[secondIndex].imageId
    }
}
package com.example.memory

import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.LayerDrawable
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.GridLayout
import android.widget.ImageButton
import androidx.constraintlayout.helper.widget.Layer
import androidx.core.content.ContextCompat

class Memory : AppCompatActivity() {
    private lateinit var game: Game
    private lateinit var gridLayout: GridLayout
    private var selectedCardIndex: Int? = null


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

        gridLayout = findViewById(R.id.gridLayout)

        game = Game(16)
        game.shuffleCards()


        for (i in 0 until gridLayout.childCount) {
            val cardButton = gridLayout.getChildAt(i) as ImageButton
            val card = game.cards[i]

            updateCard(cardButton, card)


            cardButton.setOnClickListener {
                card.isFaceUp = !card.isFaceUp
                updateCard(cardButton, card)

                if (selectedCardIndex != null) {
                    if (game.checkCards(selectedCardIndex!!, i)) {
                        hideCards(selectedCardIndex!!, i)
                    }else {
                        val prevCardButton = gridLayout.getChildAt(selectedCardIndex!!) as ImageButton
                        val prevCard = game.cards[selectedCardIndex!!]
                        prevCard.isFaceUp = false
                        updateCard(prevCardButton, prevCard)

                        selectedCardIndex = null
                    }
                }else{
                    selectedCardIndex = i
                }
            }

        }

    }
    private fun updateCard(cardButton: ImageButton, card: Card) {
        val resourceId = if (card.isFaceUp) {
            R.color.white // Use a color resource instead of ColorDrawable
        } else {
            resources.getIdentifier("card_back_${card.value}", "drawable", packageName)
        }
        cardButton.setImageDrawable(
            if (resourceId == 0) {
                // The resource was not found, so use a placeholder drawable
                ContextCompat.getDrawable(this, R.drawable.placeholder)!!
            } else {
                ContextCompat.getDrawable(this, resourceId)!!
            }
        )
    }
    private fun hideCards(index1: Int, index2: Int) {
        val cardButton1 = gridLayout.getChildAt(index1) as ImageButton
        val cardButton2 = gridLayout.getChildAt(index2) as ImageButton
        cardButton1.isClickable = false
        cardButton2.isClickable = false
    }



}