AddMedicationScreen.kt

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun AddMedicationScreen() {
    
    // Previously implemented code.

    Column(
        modifier = Modifier
            .padding(16.dp, 16.dp)
            .verticalScroll(rememberScrollState()),
        verticalArrangement = Arrangement.spacedBy(8.dp)
    ) {

        // Previously implemented code.

        Spacer(modifier = Modifier.padding(8.dp))
        Button(
            modifier = Modifier
                .fillMaxWidth()
                .height(56.dp)
                .align(Alignment.CenterHorizontally),
            onClick = {
                validateMedication(
                    name = medicationName,
                    dosage = numberOfDosage.toIntOrNull() ?: 0,
                    recurrence = recurrence,
                    endDate = endDate,
                    morningSelection = isMorningSelected,
                    afternoonSelection = isAfternoonSelected,
                    eveningSelection = isEveningSelected,
                    nightSelection = isNightSelected,
                    onInvalidate = {
                        Toast.makeText(
                            context,
                            context.getString(R.string.value_is_empty, context.getString(it)),
                            Toast.LENGTH_LONG
                        ).show()
                    },
                    onValidate = {
                        // TODO: Navigate to next screen / Store medication info
                        Toast.makeText(
                            context,
                            context.getString(R.string.success),
                            Toast.LENGTH_LONG
                        ).show()
                    }
                )
            },
            shape = MaterialTheme.shapes.extraLarge
        ) {
            Text(
                text = stringResource(id = R.string.save),
                style = MaterialTheme.typography.bodyLarge
            )
        }
    }
}