// TestRadioButton1 Example
// Source code file: MainActivity.kt
// Display the currently checked radio button when
// the button is clicked.

// Jetpack Compose does not have radiobutton groups.
// Instead, keep a single state variable that indicates
// which radiobutton is selected.

package it372.ssmith.testradiobutton1
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material3.Button
import androidx.compose.material3.RadioButton
import androidx.compose.material3.Switch
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            MainLayout( )
        }
    }
}

@Composable
fun MainLayout( ) {

    // State variables for composables
    var selected = remember { mutableStateOf(0) }
    var textDisplay = remember { mutableStateOf("") }

    Column(Modifier.padding(all = 50.dp),
        horizontalAlignment = Alignment.CenterHorizontally) {

        Row(verticalAlignment = Alignment.CenterVertically) {
            RadioButton(
                selected = selected.value == 1,
                onClick = {
                    selected.value = 1
                },
                modifier = Modifier
                    .padding(all = 20.dp)
                    .size(width = 50.dp, height = 50.dp)
            )
            Text(text = "Asparagus")
        }

        Row(verticalAlignment = Alignment.CenterVertically) {
            RadioButton(
                selected = selected.value == 2,
                onClick = {
                    selected.value = 2
                },
                modifier = Modifier
                    .padding(all = 20.dp)
                    .size(width = 50.dp, height = 50.dp)
            )
            Text(text = "Broccoli")
        }

        Row(verticalAlignment = Alignment.CenterVertically) {
            RadioButton(
                selected = selected.value == 3,
                onClick = {
                    selected.value = 3
                },
                modifier = Modifier
                    .padding(all = 20.dp)
                    .size(width = 50.dp, height = 50.dp)
            )
            Text(text = "Cabbage")
        }

        Button(onClick = {
            val vegetable =
                if (selected.value == 1) "Asparagus"
                else if (selected.value == 2) "Banana"
                else if (selected.value == 3) "Cabbage"
                else { "" }
            textDisplay.value = "Fruit: $vegetable"
        })  {
                Text(text = "Show Checked Vegetable")
            }

        Text(text = textDisplay.value , Modifier
            .padding(all = 30.dp)
            .size(width=200.dp, height=100.dp),
            fontSize = 25.sp)

    }
}

@Preview(showBackground = true)
@Composable
fun GreetingPreview() {
    MainLayout( )
}