MainMenu.java

package subway.menu;

import subway.util.DefaultSetting;

import java.util.Scanner;

public class MainMenu {

    private static final String MAIN_TITLE = "## 메인 화면";
    private static final String MENU1 = "1. 역 관리";
    private static final String MENU2 = "2. 노선 관리";
    private static final String MENU3 = "3. 구간 관리";
    private static final String MENU4 = "4. 지하철 노선도 출력";
    private static final String QUIT = "Q. 종료";
    private static final String CHOICE_MESSAGE = "## 원하는 기능을 선택하세요.";

    private Scanner scanner;

    public MainMenu(Scanner scanner) {
        this.scanner = scanner;
    }

    //TODO 메뉴번호 이외의 입력을 받았을 때 예외사항 출력 구현해야함
    public void start() {
        new DefaultSetting().defaultSetting();
        selectMainMenu();
    }

    private void selectMainMenu() {
        while (true) {
            printMainMenu();
            String input = scanner.nextLine();
            System.out.println();
            mainMenu(input);
            if (input.equals("Q")) {
                break;
            }
        }
    }

    private void mainMenu(String input) {
        if (input.equals("1")) {
            new StationMenu(scanner).startStationMenu();
        }
        if (input.equals("2")) {
            new LineMenu(scanner).startLineMenu();
        }
        if (input.equals("3")) {
            new SectionMenu(scanner).startSectionMenu();
        }
        if (input.equals("4")) {
            new SubwayMapMenu().printSubwayMap();
        }
    }

    private void printMainMenu() {
        StringBuilder sb = new StringBuilder();
        sb.append(MAIN_TITLE).append("\n")
                .append(MENU1).append("\n")
                .append(MENU2).append("\n")
                .append(MENU3).append("\n")
                .append(MENU4).append("\n")
                .append(QUIT).append("\n\n")
                .append(CHOICE_MESSAGE);
        System.out.println(sb);
    }
}