package services;

import utils.Formatters;
import utils.ConstValues;

import java.text.ParseException;

import java.util.Date;
import java.util.Scanner;

/**
 * Prompts and stores the configuration that the app needs to be run with.
 */
public class AppConfigService {
    public String countryName;
    public Date date;

    /**
     * Prompts the user to input the country name and date, and stores the input.
     * It will keep prompting the user until the date is in the correct format.
     */
    public void promptAndSetUserArguments() {
        final Scanner scanner = new Scanner(System.in);
        System.out.println(ConstValues.inputCountryName);
        countryName = scanner.nextLine();
        System.out.println();

        System.out.println(ConstValues.inputDate);
        while (true) {
            try {
                date = Formatters.APPLICATION_DATE_FORMATTER.parse(scanner.nextLine());
                // Always using exact current date. Otherwise, different day possible at the start of the run.
                if (date.after(new Date())) {
                    System.out.println("There is no data available for the future yet... Try again:");
                    continue;
                }

                // Not doing anymore month/day validations.

                break;
            } catch (ParseException e) {
                System.out.printf("Unable to parse date. Should be in format '%s'.\nTry again:%n", Formatters.APPLICATION_DATE_FORMATTER.toPattern());
            }
        }

        scanner.close();
    }
}