Form Handling.kt

enum class ValidationType {
    Text, Phone, Email, Password
}

data class InputWrapper(
        var inputValue: MutableState<String> = mutableStateOf(""),
        var borderColor: String = Gray,
        val validationType: ValidationType? = ValidationType.Text
) {
    var validationMessageResourceId: Int = R.string.empty_lbl
    fun onValueChange(input: String) {
        inputValue.value = input
        validationMessageResourceId = when (validationType) {
            ValidationType.Email -> input.validateEmail()
            ValidationType.Phone -> input.validatePhone()
            else -> input.validateRequired()
        }
         borderColor = if (isValid) {
            Gray // make border red if input is not valid
        } else {
            Red // make border gray if input is valid
        }
    }

   val isValid: Boolean
        get() = validationMessageResourceId == R.string.empty_lbl && inputValue.value.isNotEmpty()

}

FormState.kt

class FormState() {
    
    val mobile: InputWrapper = InputWrapper(
        validationType = ValidationType.Phone
    ),
    val name: InputWrapper = InputWrapper(
        validationType = ValidationType.Text
    ),
    val email: InputWrapper = InputWrapper(
        validationType = ValidationType.Email
    ),
    val password: InputWrapper = InputWrapper(
        validationType = ValidationType.Password
    )
    
    val isSendEnabled = name.isValid && mobile.isValid && email.isValid && message.isValid
}

How to use it.kt

// in viewmodel 
    val contactFormState = FormState()
    
// in your screen 

@Composable
private fun ContactContent(
    contactFormState: ContactFormState,
    isLoading: Boolean = false,
    onSaveUpdatesClick: () -> Unit,
) {

    Column(
        Modifier
            .fillMaxSize()
            .background(WalletBg)
            .verticalScroll(rememberScrollState())
            .padding(horizontal = 24.dp),
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Text(
            text = stringResource(R.string.welcom),
            style = lightWithoutLineStyle,
            fontSize = 25.sp
        )

        InputText(
            text = contactFormState.name,
            onValueChange = contactFormState.name::onValueChange,
            hint = stringResource(id = R.string.full_name),
        )

        Spacer(modifier = Modifier.height(15.dp))

        InputText(
            text = contactFormState.mobile,
            onValueChange = contactFormState.mobile::onValueChange,
            hint = stringResource(id = R.string.mobile),
            inputType = KeyboardType.Phone,

            )
        Spacer(modifier = Modifier.height(15.dp))

        InputText(
            text = contactFormState.email,
            onValueChange = contactFormState.email::onValueChange,
            hint = stringResource(id = R.string.email),
            inputType = KeyboardType.Email,

            )
        Spacer(modifier = Modifier.height(15.dp))
        
         Button(
            onClick = onSaveUpdatesClick, title = stringResource(R.string.send_message),
            hasBoarder = false,
            modifier = Modifier.fillMaxWidth(
            ),
            isEnabled = viewModel.contactFormState.isSendEnabled,
            isLoading = isLoading
        )
    }