import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class Main {

    private static final Path EMAILS_PATH = Path.of("emails that have guessed the winner.txt");
    private static final Random RANDOM = new SecureRandom();

    public static void main(String[] args) {
        List<String> emails = readEmailsFromFile();

        draw(emails, "ADIDAS PERFORMANCE Футболна топка");
        draw(emails, "Ваучера за подарък на стойност от 50 лв");
    }

    private static List<String> readEmailsFromFile() {
        try {
            return new ArrayList<>(Files.readAllLines(EMAILS_PATH));
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    private static void draw(List<String> emails, String prize) {
        for (int i = 0; i < 3; i++) {
            int rand = RANDOM.nextInt(emails.size());

            String winner = emails.get(rand);

            System.out.printf("Поздравления! %s спечели %s!%n", winner, prize);

            emails.remove(winner);
        }
    }
}