Android Dev - Hoist State Button Click

package com.test.testbutton

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import id.ruff.testbutton.ui.theme.TestButtonTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            TestButtonTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    TestButtonPreview()
                }
            }
        }
    }
}

@Composable
fun TestButton(modifier: Modifier = Modifier) {

    var currentState by remember { mutableStateOf(true) }

    val myWord = when (currentState) {
        true -> "RED"
        false -> "BLUE"
    }

    val myColor = when (currentState) {
        true -> Color(red = 205, green = 45, blue = 85)
        false -> Color(red = 45, green = 145, blue = 205)
    }

    Column(
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.Center
    ) {
        Text(myWord, fontSize = 128.sp, color = myColor)
        Spacer(Modifier.height(16.dp))

        // Hoist State of the button click activity to change colour here
        ButtonSection({currentState = !currentState},modifier)
    }
}

@Composable
fun ButtonSection(
    onButtonPressed: () -> Unit,
    modifier: Modifier = Modifier) {
        Button(
            onClick = { onButtonPressed() }
        ) {
            Text("clicky click")
        }
}

@Preview(showBackground = true)
@Composable
fun TestButtonPreview() {
    TestButtonTheme {
        TestButton()
    }
}