과목 배열로 받도록 수정

src/main/java/org/example/skuhomepage/domain/timetable/controller/TimeTableController.java

@@ -41,15 +41,16 @@ public ApiResponse<TimeTableResponseDTO.TimeTableListDTO> getTimeTableList(
 
   @Override
   public ApiResponse<TimeTableResponseDTO.AddSubjectDTO> addSubject(
-      UserDetails userDetails, Long subjectId) {
-    TimeTableResponseDTO.AddSubjectDTO result = timeTableService.addSubject(userDetails, subjectId);
+      UserDetails userDetails, TimeTableRequestDTO.AddSubjectDTO subjectDTO) {
+    TimeTableResponseDTO.AddSubjectDTO result =
+        timeTableService.addSubject(userDetails, subjectDTO.getSubjectIds());
     return ApiResponse.onSuccess(result);
   }
 
   @Override
-  public ApiResponse<TimeTableResponseDTO.AddSubjectDTO> addSelfSubject(
+  public ApiResponse<TimeTableResponseDTO.SelfSubjectDTO> addSelfSubject(
       UserDetails userDetails, TimeTableRequestDTO.selfSubjectDTO request) {
-    TimeTableResponseDTO.AddSubjectDTO result =
+    TimeTableResponseDTO.SelfSubjectDTO result =
         timeTableService.addSelfSubject(userDetails, request);
     return ApiResponse.onSuccess(result);
   }

src/main/java/org/example/skuhomepage/domain/timetable/controller/TimeTableControllerSpec.java

@@ -45,20 +45,20 @@ ApiResponse<TimeTableResponseDTO.TimeTableListDTO> getTimeTableList(
       @RequestParam(defaultValue = "0") int page,
       @RequestParam(defaultValue = "10") int size);
 
-  @PostMapping("/{subjectId}")
+  @PostMapping("/add")
   @Operation(summary = "선택한 과목 내 시간표에 추가하기", description = "선택한 수업 내 시간표에 추가하기")
   @ApiErrorCodeExample(TimeTableErrorStatus.class)
   ApiResponse<TimeTableResponseDTO.AddSubjectDTO> addSubject(
       @Parameter(name = "userDetails", description = "인증된 사용자 정보", hidden = true)
           @AuthenticationPrincipal
           UserDetails userDetails,
-      @Parameter(name = "subjectId", description = "과목 아이디", required = true) @PathVariable
-          Long subjectId);
+      @Parameter(name = "subjectId", description = "과목 아이디", required = true) @RequestBody
+          TimeTableRequestDTO.AddSubjectDTO subjectDTO);
 
   @PostMapping("/self")
   @Operation(summary = "수업 직접 추가하기", description = "수업 직접 추가하는 api")
   @ApiErrorCodeExample(TimeTableErrorStatus.class)
-  ApiResponse<TimeTableResponseDTO.AddSubjectDTO> addSelfSubject(
+  ApiResponse<TimeTableResponseDTO.SelfSubjectDTO> addSelfSubject(
       @Parameter(name = "userDetails", description = "인증된 사용자 정보", hidden = true)
           @AuthenticationPrincipal
           UserDetails userDetails,

src/main/java/org/example/skuhomepage/domain/timetable/dto/TimeTableRequestDTO.java

@@ -1,8 +1,11 @@
 package org.example.skuhomepage.domain.timetable.dto;
 
+import java.util.List;
+
 import jakarta.validation.constraints.NotBlank;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
 
 public class TimeTableRequestDTO {
@@ -20,4 +23,10 @@ public static class selfSubjectDTO {
     @Schema(description = "장소", example = "북악관 608호")
     private String classroom;
   }
+
+  @Getter
+  @AllArgsConstructor
+  public static class AddSubjectDTO {
+    private List<Long> subjectIds;
+  }
 }

src/main/java/org/example/skuhomepage/domain/timetable/dto/TimeTableResponseDTO.java

@@ -31,7 +31,10 @@ public record TimeTableListDTO(
       @Schema(description = "마지막 존재 여부", example = "true") boolean hasNext,
       @Schema(description = "다음 페이지", example = "2") int nextPage) {}
 
-  public record AddSubjectDTO(@Schema(description = "과목 id", example = "1") Long subjectId) {}
+  public record AddSubjectDTO(
+      @Schema(description = "과목 id", example = "1") List<Long> subjectIds) {}
+
+  public record SelfSubjectDTO(@Schema(description = "과목 id", example = "1") Long subjectId) {}
 
   public record DeleteSubjectDTO(@Schema(description = "과목 id", example = "1") Long subjectId) {}
 

src/main/java/org/example/skuhomepage/domain/timetable/service/TimeTableService.java

@@ -2,6 +2,7 @@
 
 import java.time.DayOfWeek;
 import java.time.LocalDate;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -92,11 +93,7 @@ public TimeTableListDTO getTimeTableList(UserDetails userDetails, Pageable pagea
     return new TimeTableListDTO(timeTableDTOS, subjectList.hasNext(), pageable.getPageNumber() + 1);
   }
 
-  public AddSubjectDTO addSubject(UserDetails userDetails, Long subjectId) {
-    Subject subject =
-        subjectRepository
-            .findById(subjectId)
-            .orElseThrow(() -> new GeneralException(TimeTableErrorStatus.SUBJECT_NOT_FOUND));
+  public AddSubjectDTO addSubject(UserDetails userDetails, List<Long> subjectIds) {
     TimeTable timeTable =
         timeTableRepository
             .findByUser_Account(userDetails.getUsername())
@@ -115,24 +112,33 @@ public AddSubjectDTO addSubject(UserDetails userDetails, Long subjectId) {
                           .build();
                   return timeTableRepository.save(newTimeTable);
                 });
-    boolean isAlreadyAdded =
-        timeTableSubjectRepository.existsByTimeTableAndSubject(timeTable, subject);
-    if (isAlreadyAdded) {
-      throw new GeneralException(TimeTableErrorStatus.SUBJECT_ALREADY_EXIST);
+    List<Long> addedSubjectIds = new ArrayList<>();
+
+    for (Long subjectId : subjectIds) {
+      Subject subject =
+          subjectRepository
+              .findById(subjectId)
+              .orElseThrow(() -> new GeneralException(TimeTableErrorStatus.SUBJECT_NOT_FOUND));
+
+      boolean isAlreadyAdded =
+          timeTableSubjectRepository.existsByTimeTableAndSubject(timeTable, subject);
+      if (!isAlreadyAdded) {
+        TimeTableSubject timeTableSubject =
+            TimeTableSubject.builder()
+                .timeTable(timeTable)
+                .subject(subject)
+                .isCustomSubject(false)
+                .build();
+
+        timeTableSubjectRepository.save(timeTableSubject);
+        addedSubjectIds.add(subject.getId());
+      }
     }
-
-    TimeTableSubject timeTableSubject =
-        TimeTableSubject.builder()
-            .timeTable(timeTable)
-            .subject(subject)
-            .isCustomSubject(false)
-            .build();
-
-    timeTableSubjectRepository.save(timeTableSubject);
-    return new AddSubjectDTO(subject.getId());
+    return new AddSubjectDTO(addedSubjectIds);
   }
 
-  public AddSubjectDTO addSelfSubject(UserDetails userDetails, selfSubjectDTO request) {
+  public TimeTableResponseDTO.SelfSubjectDTO addSelfSubject(
+      UserDetails userDetails, selfSubjectDTO request) {
     Subject subject =
         subjectRepository.save(
             Subject.builder()
@@ -165,7 +171,7 @@ public AddSubjectDTO addSelfSubject(UserDetails userDetails, selfSubjectDTO requ
             .build();
 
     timeTableSubjectRepository.save(timeTableSubject);
-    return new AddSubjectDTO(subject.getId());
+    return new TimeTableResponseDTO.SelfSubjectDTO(subject.getId());
   }
 
   public DeleteSubjectDTO deleteSubject(UserDetails userDetails, Long subjectId) {