package com.fastcampus.ch2;

import java.util.Calendar;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

@Controller

public class YoilTellerMVC2 {

@ExceptionHandler(Exception.class)

public String catcher(Exception ex) {

return "yoilError";

}

@RequestMapping("/getYoilMVC2") // http://localhost/ch2/getYoilMVC2

public String main(@RequestParam(required=true) int year,

@RequestParam(required=true) int month,

@RequestParam(required=true) int day, Model model) {

// 1. 유효성 검사

if(!isValid(year, month, day))

return "yoilError"; // 유효하지 않으면, /WEB-INF/views/yoilError.jsp로 이동

// 2. 처리

char yoil = getYoil(year, month, day);

// 3. Model에 작업 결과 저장

model.addAttribute("year", year);

model.addAttribute("month", month);

model.addAttribute("day", day);

model.addAttribute("yoil", yoil);

// 4. 작업 결과를 보여줄 View의 이름을 반환

return "yoil"; // /WEB-INF/views/yoil.jsp

}

private char getYoil(int year, int month, int day) {

Calendar cal = Calendar.getInstance();

cal.set(year, month - 1, day);

int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);

return " 일월화수목금토".charAt(dayOfWeek);

}

private boolean isValid(int year, int month, int day) {

if(year==-1 || month==-1 || day==-1)

return false;

return (1<=month && month<=12) && (1<=day && day<=31); // 간단히 체크

}

}