refactor : 비밀번호 암호화 책임 변경

기존 : 도메인 클래스에서 비밀번호 암호화 로직이 포함되어있었음
문제 : 비밀번호 암호화는 비즈니스 로직
변경 : 서비스 레이어에게 암호화 로직 책임 할당

src/main/java/com/flab/offcoupon/domain/Member.java

@@ -1,7 +1,6 @@
 package com.flab.offcoupon.domain;
 
 import com.flab.offcoupon.controller.api.MemberMapperDTO;
-import com.flab.offcoupon.util.bcrypt.BcryptPassword;
 import jakarta.validation.constraints.NotBlank;
 import lombok.*;
 import org.springframework.data.annotation.Id;
@@ -37,24 +36,21 @@ public class Member {
     @NotBlank
     private LocalDate updatedAt;
 
-    @Builder
-    private Member(String email, String password, String name, String birthDate, String phone) {
-        this.email = email;
-        this.password = password;
-        this.name = name;
-        this.birthDate = birthDate;
-        this.phone = phone;
+    private Member(MemberMapperDTO memberMapperDTO) {
+        this.email = memberMapperDTO.getEmail();
+        this.password = memberMapperDTO.getPassword();
+        this.name = memberMapperDTO.getName();
+        this.birthDate = memberMapperDTO.getBirthDate();
+        this.phone = memberMapperDTO.getPhone();
         this.createdAt = LocalDate.now();
         this.updatedAt = LocalDate.now();
     }
 
     public static Member toEntity(MemberMapperDTO memberMapperDTO) {
-        return Member.builder()
-                .email(memberMapperDTO.getEmail())
-                .password(BcryptPassword.encrypt(memberMapperDTO.getPassword()))
-                .name(memberMapperDTO.getName())
-                .birthDate(memberMapperDTO.getBirthDate())
-                .phone(memberMapperDTO.getPhone())
-                .build();
+        return new Member(memberMapperDTO);
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
     }
 }

src/main/java/com/flab/offcoupon/service/MemberService.java

@@ -5,7 +5,9 @@
 import com.flab.offcoupon.exception.member.MemberBadRequestException;
 import com.flab.offcoupon.repository.MemberMapperRepository;
 import com.flab.offcoupon.util.ResponseDTO;
+import com.flab.offcoupon.util.bcrypt.BcryptPassword;
 import lombok.RequiredArgsConstructor;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.stereotype.Service;
 
 import static com.flab.offcoupon.exception.ErrorMessage.DUPLICATED_EMAIL;
@@ -19,6 +21,7 @@ public class MemberService {
     public ResponseDTO signUp(MemberMapperDTO memberMapperDTO) {
         checkDuplicatedEmail(memberMapperDTO.getEmail());
         Member entity = Member.toEntity(memberMapperDTO);
+        entity.setPassword(encryptPassword(memberMapperDTO.getPassword()));
         memberMapperRepository.save(entity);
         return ResponseDTO.getSuccessResult(memberMapperDTO);
     }
@@ -29,4 +32,8 @@ private void checkDuplicatedEmail(String email) {
             throw new MemberBadRequestException(DUPLICATED_EMAIL);
         }
     }
+
+    private String encryptPassword(String password) {
+        return BcryptPassword.encrypt(password);
+    }
 }

src/main/java/com/flab/offcoupon/util/bcrypt/BcryptPassword.java

@@ -8,7 +8,7 @@ public static String encrypt(String password) {
         return BCrypt.hashpw(password,BCrypt.gensalt());
     }
 
-    public static boolean decrypt(String password, String hashedPassword) {
+    public static boolean match(String password, String hashedPassword) {
         return BCrypt.checkpw(password, hashedPassword);
     }
 }