Ser invalid password count limit (#139)

src/main/java/org/swmaestro/repl/gifthub/giftcard/entity/Giftcard.java

@@ -44,16 +44,36 @@ public class Giftcard {
 	@Column(length = 60, nullable = false)
 	private String password;
 
+	@Column
+	private Integer invalidPasswordCount;
+
 	@Builder
 	public Giftcard(String id, Voucher voucher, String message, LocalDateTime expiresAt, String password) {
 		this.id = id;
 		this.voucher = voucher;
 		this.message = message;
 		this.password = password;
 		this.expiresAt = expiresAt;
+		this.invalidPasswordCount = 0;
 	}
 
-	public void expire() {
+	public Giftcard expire() {
 		this.expiresAt = LocalDateTime.now();
+		return this;
+	}
+
+	public Giftcard increaseInvalidPasswordCount() {
+		this.invalidPasswordCount++;
+		return this;
+
+	}
+
+	public Giftcard resetInvalidPasswordCount() {
+		this.invalidPasswordCount = 0;
+		return this;
+	}
+
+	public boolean isEnable() {
+		return this.expiresAt.isAfter(LocalDateTime.now());
 	}
 }

src/main/java/org/swmaestro/repl/gifthub/giftcard/service/GiftcardService.java

@@ -78,14 +78,21 @@ public Giftcard read(String id) {
 	public GiftcardResponseDto read(String id, String password) {
 		Giftcard giftcard = read(id);
 
-		if (giftcard.getExpiresAt().isBefore(LocalDateTime.now())) {
-			throw new BusinessException("만료된 링크입니다.", StatusEnum.BAD_REQUEST);
+		if (!giftcard.isEnable()) {
+			throw new BusinessException("기간이 만료된 링크입니다.", StatusEnum.BAD_REQUEST);
+		}
+
+		if (giftcard.getInvalidPasswordCount() >= 10) {
+			throw new BusinessException("비밀번호를 10회 이상 틀렸습니다. 이 링크는 더 이상 사용할 수 없습니다.", StatusEnum.FORBIDDEN);
 		}
 
 		if (!decryptPassword(giftcard.getPassword()).equals(password)) {
+			save(giftcard.increaseInvalidPasswordCount());
 			throw new BusinessException("비밀번호가 일치하지 않습니다.", StatusEnum.FORBIDDEN);
 		}
 
+		save(giftcard.resetInvalidPasswordCount());
+
 		return GiftcardResponseDto.builder()
 				.sender(giftcard.getVoucher().getUser().getNickname())
 				.message(giftcard.getMessage())
@@ -95,6 +102,10 @@ public GiftcardResponseDto read(String id, String password) {
 				.build();
 	}
 
+	public Giftcard save(Giftcard giftcard) {
+		return giftCardRepository.save(giftcard);
+	}
+
 	/**
 	 * 기프트 카드의 소유자를 변경합니다.
 	 * @param giftcardId: 변경할 기프트 카드의 id
@@ -112,9 +123,7 @@ public Giftcard changeVoucherUser(String giftcardId, String username) {
 		User newUser = userService.read(username);
 		updatedVoucher.setUser(newUser);
 		voucherRepository.save(updatedVoucher);
-
-		giftcard.expire();
-		giftCardRepository.save(giftcard);
+		giftCardRepository.save(giftcard.expire());
 		return giftcard;
 	}