dd

import java.util.Scanner;
import java.util.Calendar;
import java.text.SimpleDateFormat;

public class Main {

	public static void main(String[] args) {
		Scanner sn = new Scanner(System.in);
		Board board = new Board();
		board.setScanner(sn);
		board.start();
		
		sn.close();
	}

}
class Board {
	Scanner sn;
	Article[] articles;
	int articlesLastIndex;
	
	Board() {
		articles = new Article[100];
		articlesLastIndex = -1;
	}
	
	// 게시물 객체 개수
	int getArticlesCount() {
		return articlesLastIndex + 1;
	}
	
	// 스캐너 통로
	void setScanner(Scanner sn) {
		this.sn = sn;
	}

	// 시작
	void start() {
		help();
		
		
		while(true) {
			System.out.printf("게시판) ");
			String cmd = sn.next().trim();
			if(cmd.equals("help")) {
				sn.nextLine();
				help();
			}
			else if(cmd.equals("add")) {
				sn.nextLine();
				doCmdAdd();
			}
			else if(cmd.equals("list")) {
				sn.nextLine();
				doCmdList();
			}
			else if(cmd.equals("detail")) {
				int detNm = sn.nextInt();
				sn.nextLine();
				doCmddetail(detNm);
			}
			else if(cmd.equals("modify")) {
				int modNm = sn.nextInt();
				sn.nextLine();
				doCmdmodify(modNm);
			}
			else if(cmd.equals("delete")) {
				int delNm = sn.nextInt();
				sn.nextLine();
				doCmddelete(delNm);
			}
			else if(cmd.equals("exit")) {
				sn.nextLine();
				System.out.println("== 게시판 종료 ==");
				break;
			}
		
		}
		
	}
	
	// 게시물 삭제
	private void doCmddelete(int id) {
		Article index = getIdIndex(id);
		
		if(index == null) {
			System.out.println("게시물이 없습니다.");
			return;
		} else {
			for(int i = id; i <= articlesLastIndex-1; i++) {
				articles[i] = articles[i+1];
			}
			articlesLastIndex--;
			System.out.println("게시물 삭제완료.");
		}
	}

	// 게시물 수정
	void doCmdmodify(int id) {
		Article article = getIdIndex(id);
		
		if(article == null) {
			System.out.println("게시물이 없습니다.");
			return;
		} else {
			System.out.print("제목 : ");
			String title = sn.nextLine().trim();
			System.out.print("내용 : ");
			String body = sn.nextLine().trim();
			
			article.title = title;
			article.body = body;
		}
		
	}

	// 게시물 상세
	void doCmddetail(int id) {
		Article article = getIdIndex(id);
		
		if(article == null) {
			System.out.println("게시물이 없습니다.");
			return;
		} else {
			System.out.printf("번호 : %d\n", article.id);
			System.out.printf("날짜 : %s\n", article.regDate);
			System.out.printf("제목 : %s\n", article.title);
			System.out.printf("내용 : %s\n", article.body);
		}
	}

	// 게시물 리스트
	void doCmdList() {
		if(articlesLastIndex == -1) {
			System.out.println("게시물이 없습니다.");
		} else {
			System.out.println("번호, 날짜, 제목");
			for(int i = 0; i <= articlesLastIndex; i++) {
				Article article = articles[i];
				System.out.printf("%d, %s, %s\n", article.id, article.regDate, article.title);
			}
		}
	}

	// 게시물 추가
	void doCmdAdd() {
		Article article = new Article();
		
		int articleCnt = getArticlesCount();
		int newNm;
		
		Article art = getLastArticle();
		
		if(art == null) {
			newNm = 1;
		} else {
			newNm = art.id + 1;
		}
		
		article.id = newNm;
		article.regDate = getNowDate();
		
		System.out.print("제목 : ");
		article.title = sn.nextLine().trim();
		System.out.print("내용 : ");
		article.body = sn.nextLine().trim();
		System.out.printf("%d번 게시물이 저장되었습니다.\n", article.id);
		
		articles[articleCnt] = article;
		articlesLastIndex++;
	}
	
	// 마지막에 저장된 게시물 리모컨
	Article getLastArticle() {
		if(getArticlesCount() > 0) {
			return articles[articlesLastIndex];
		}
		return null;
	}
	
	// id에 해당하는 객체 리모컨
	Article getIdIndex(int id) {
		for(int i = 0; i <= articlesLastIndex; i++) {
			if(articles[i].id == id) {
				return articles[i];
			}
		}
		return null;
	}
	
	// 현재 날짜
	String getNowDate() {
		SimpleDateFormat date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Calendar cal = Calendar.getInstance();
		String dateStr = date.format(cal.getTime());
		return dateStr;
	}


	void help() {
		System.out.println("== 명령어리스트 ==");
		System.out.println("help : 명령어리스트");
		System.out.println("list : 게시물리스트");
		System.out.println("add : 게시물 추가");
		System.out.println("exit : 종료");
		System.out.println("detail ${게시물 번호} : 게시물 상세보기");
		
		
	}
	
	
	
}
class Article {
	int id;
	String regDate;
	String title;
	String body;
}