[REFACTOR] Category enum 도메인 수정 (#178)

* refactor: Category enum 도메인 수정 (#177)

* refactor: 코드 리팩토링 (#177)

Author: hyunmin0317

src/main/java/com/smunity/server/domain/course/entity/Standard.java

@@ -19,7 +19,6 @@ public class Standard {
     @JoinColumn(name = "year_id")
     private Year year;
 
-    @Column(nullable = false)
     @Enumerated(EnumType.STRING)
     private Category category;
 

src/main/java/com/smunity/server/domain/course/service/CourseCommandService.java

@@ -8,7 +8,6 @@
 import com.smunity.server.domain.course.entity.Course;
 import com.smunity.server.domain.course.repository.course.CourseRepository;
 import com.smunity.server.global.common.entity.Member;
-import com.smunity.server.global.common.entity.enums.Category;
 import com.smunity.server.global.common.repository.MemberRepository;
 import com.smunity.server.global.exception.GeneralException;
 import com.smunity.server.global.exception.code.ErrorCode;
@@ -38,7 +37,7 @@ public ResultResponseDto<CourseResponseDto> createCourses(Long memberId, AuthReq
                 .toList();
         courseRepository.saveAll(courses);
         List<CourseResponseDto> responseDtoList = CourseResponseDto.from(member.getCourses());
-        int total = standardService.getTotal(member.getYear(), Category.ALL);
+        int total = standardService.getTotal(member.getYear());
         return ResultResponseDto.of(total, member.getCompletedCredits(), responseDtoList);
     }
 

src/main/java/com/smunity/server/domain/course/service/CourseQueryService.java

@@ -35,15 +35,15 @@ public ResultResponseDto<CourseResponseDto> readCourses(Long memberId, Category
                 .orElseThrow(() -> new GeneralException(ErrorCode.MEMBER_NOT_FOUND));
         List<Course> courses = courseRepository.findByMemberIdAndCategory(memberId, category);
         List<CourseResponseDto> responseDtoList = CourseResponseDto.from(courses);
-        int total = standardService.getTotal(member.getYear(), member.getDepartment(), getCategory(category));
+        int total = standardService.getTotal(member.getYear(), member.getDepartment(), category);
         int completed = calculateCompleted(courses);
         return ResultResponseDto.of(total, completed, responseDtoList);
     }
 
     public CreditResponseDto readCoursesCredit(Long memberId) {
         Member member = memberRepository.findById(memberId)
                 .orElseThrow(() -> new GeneralException(ErrorCode.MEMBER_NOT_FOUND));
-        int total = standardService.getTotal(member.getYear(), Category.ALL);
+        int total = standardService.getTotal(member.getYear());
         return CreditResponseDto.from(total, member);
     }
 
@@ -57,10 +57,6 @@ public ResultResponseDto<CultureResponseDto> readCultureCourses(Long memberId, D
         return ResultResponseDto.of(total, completed, responseDtoList);
     }
 
-    private Category getCategory(Category category) {
-        return category != null ? category : Category.ALL;
-    }
-
     private int calculateCompleted(List<Course> courses) {
         return courses.stream()
                 .mapToInt(Course::getCredit)

src/main/java/com/smunity/server/domain/course/service/StandardService.java

@@ -25,12 +25,16 @@ public int getCultureTotal(int size, Domain domain) {
         };
     }
 
+    public int getTotal(Year year) {
+        return getTotal(year, null);
+    }
+
     public int getTotal(Year year, Department department, Category category) {
         int total = getTotal(year, category);
-        return department.isHasAdvanced() ? total : getTotal(total, category);
+        return department.isHasAdvanced() || category == null ? total : getTotal(total, category);
     }
 
-    public int getTotal(Year year, Category category) {
+    private int getTotal(Year year, Category category) {
         return standardRepository.findByYearAndCategory(year, category)
                 .map(Standard::getTotal)
                 .orElse(0);

src/main/java/com/smunity/server/global/common/entity/enums/Category.java

@@ -10,7 +10,6 @@
 @RequiredArgsConstructor
 public enum Category {
 
-    ALL("전체"),
     MAJOR_ADVANCED("1전심"),
     MAJOR_OPTIONAL("1전선"),
     CULTURE("교양"),