From 27e70bc4645fb8877c42c6a99f5da12ee7f4fa07 Mon Sep 17 00:00:00 2001
From: Kim HyunSik <hsik0225@gmail.com>
Date: Thu, 4 Jun 2020 12:33:26 +0900
Subject: [PATCH] =?UTF-8?q?[#38]=20feat:=20=EC=98=88=EC=95=BD=20=EB=82=A0?=
 =?UTF-8?q?=EC=A7=9C=20validation=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../exception/InputMistakeException.java      |  4 +--
 .../reservation/domain/ReservationDate.java   | 33 ++++++++++++++++---
 .../airbnb/room/ui/MainController.java        |  1 +
 3 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/BE/src/main/java/com/codesquad/airbnb/common/exception/InputMistakeException.java b/BE/src/main/java/com/codesquad/airbnb/common/exception/InputMistakeException.java
index 46005b4..9389973 100644
--- a/BE/src/main/java/com/codesquad/airbnb/common/exception/InputMistakeException.java
+++ b/BE/src/main/java/com/codesquad/airbnb/common/exception/InputMistakeException.java
@@ -2,7 +2,7 @@
 
 public class InputMistakeException extends RuntimeException {
 
-    public InputMistakeException() {
-        super();
+    public InputMistakeException(String message) {
+        super(message);
     }
 }
diff --git a/BE/src/main/java/com/codesquad/airbnb/reservation/domain/ReservationDate.java b/BE/src/main/java/com/codesquad/airbnb/reservation/domain/ReservationDate.java
index 903b843..b940161 100644
--- a/BE/src/main/java/com/codesquad/airbnb/reservation/domain/ReservationDate.java
+++ b/BE/src/main/java/com/codesquad/airbnb/reservation/domain/ReservationDate.java
@@ -1,7 +1,10 @@
 package com.codesquad.airbnb.reservation.domain;
 
+import com.codesquad.airbnb.common.exception.InputMistakeException;
 import lombok.*;
 
+import javax.validation.constraints.AssertTrue;
+import javax.validation.constraints.FutureOrPresent;
 import javax.validation.constraints.NotNull;
 import java.time.LocalDate;
 
@@ -12,9 +15,31 @@
 @ToString
 public class ReservationDate {
 
-    @NotNull
-    private LocalDate checkInDate = LocalDate.MIN;
+    @NotNull(message = "Please provide a date")
+    @FutureOrPresent
+    private LocalDate checkInDate = LocalDate.now();
 
-    @NotNull
-    private LocalDate checkOutDate = LocalDate.MAX;
+    @NotNull(message = "Please provide a date")
+    @FutureOrPresent
+    private LocalDate checkOutDate = LocalDate.now();
+
+    @AssertTrue
+    private boolean isAfterThanCheckInDate() {
+        if(checkOutDate.isBefore(checkInDate)) {
+            throw new InputMistakeException("체크아웃 날짜를 확인해주세요");
+        }
+
+        return true;
+    }
+
+    public void validateReservationDate() {
+        validateCheckInDate();
+        isAfterThanCheckInDate();
+    }
+
+    private void validateCheckInDate() {
+        if(checkInDate.isBefore(LocalDate.now())) {
+            throw new InputMistakeException("체크인 날짜를 확인해주세요");
+        }
+    }
 }
diff --git a/BE/src/main/java/com/codesquad/airbnb/room/ui/MainController.java b/BE/src/main/java/com/codesquad/airbnb/room/ui/MainController.java
index 4afe41b..b87128a 100644
--- a/BE/src/main/java/com/codesquad/airbnb/room/ui/MainController.java
+++ b/BE/src/main/java/com/codesquad/airbnb/room/ui/MainController.java
@@ -30,6 +30,7 @@ public Main showMain(ReservationDate reservationDate,
                          Guest guest,
                          Budget budget) {
 
+        reservationDate.validateReservationDate();
         return viewDAO.main(utilDAO, reservationDate, guest, budget);
     }