package ch.hslu.demo;

import java.util.Scanner;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * Demo-Applikation
 */
public final class DemoApp {

    private static final Logger LOG = LogManager.getLogger(DemoApp.class);

    /**
     * Privater Konstruktor.
     */
    private DemoApp() {
    }

    /**
     * Main-Methode.
     * @param args Startargumente.
     */
    public static void main(String[] args) {
        String input;
        Scanner scanner = new Scanner(System.in);

        do {
            System.out.println("Bitte Zahl eingeben ('exit' zum Beenden): ");
            input = scanner.next();
            float value;
            try {
                value = Float.valueOf(input);
                System.out.println(Temperatur.createFromCelsius(value).getCelsius());
            } catch (NumberFormatException e) {
                if(!input.equals("exit")) {
                    LOG.error("Bitte gebe eine gültige Zahl ein.");
                }
            } catch (IllegalArgumentException e) {
                LOG.error(e.getMessage());
            }
        } while (!input.equals("exit"));
        LOG.info("Programm beendet.");
    }
}