Study Controller, Service 추가

src/main/java/com/gdgoc/study_group/curriculum/domain/Curriculum.java

@@ -7,12 +7,13 @@
 import jakarta.persistence.Id;
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
-import lombok.Getter;
-import lombok.Setter;
+import lombok.*;
 
 @Entity
+@Builder
 @Getter
-@Setter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@NoArgsConstructor
 public class Curriculum {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)

src/main/java/com/gdgoc/study_group/curriculum/dto/CurriculumDTO.java

@@ -0,0 +1,11 @@
+package com.gdgoc.study_group.curriculum.dto;
+
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class CurriculumDTO {
+  private Integer week;
+  private String subject;
+}

src/main/java/com/gdgoc/study_group/day/domain/Day.java

@@ -1,5 +1,6 @@
 package com.gdgoc.study_group.day.domain;
 
+import com.fasterxml.jackson.annotation.JsonFormat;
 import com.gdgoc.study_group.study.domain.Study;
 import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
@@ -8,12 +9,13 @@
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
 import java.time.LocalTime;
-import lombok.Getter;
-import lombok.Setter;
+import lombok.*;
 
 @Entity
+@Builder
 @Getter
-@Setter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@NoArgsConstructor
 public class Day {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -24,5 +26,7 @@ public class Day {
   private Study study;
 
   private String day;
+
+  @JsonFormat(pattern = "kk:mm")
   private LocalTime startTime;
 }

src/main/java/com/gdgoc/study_group/day/dto/DayDTO.java

@@ -0,0 +1,15 @@
+package com.gdgoc.study_group.day.dto;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import java.time.LocalTime;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class DayDTO {
+  private String day;
+
+  @JsonFormat(pattern = "hh:mm") // "startTime": "14:00" 형식으로 입력
+  private LocalTime startTime;
+}

src/main/java/com/gdgoc/study_group/study/api/StudyController.java

@@ -0,0 +1,28 @@
+package com.gdgoc.study_group.study.api;
+
+import com.gdgoc.study_group.study.application.StudyService;
+import com.gdgoc.study_group.study.domain.Study;
+import com.gdgoc.study_group.study.dto.StudyCreateRequest;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/studies")
+public class StudyController {
+
+  public final StudyService studyService;
+
+  public StudyController(StudyService studyService) {
+    this.studyService = studyService;
+  }
+
+  @PostMapping()
+  public ResponseEntity<Study> createStudy(@RequestBody StudyCreateRequest request) {
+    Study newStudy = studyService.createStudy(request);
+
+    return ResponseEntity.ok(newStudy);
+  }
+}

src/main/java/com/gdgoc/study_group/study/application/StudyService.java

@@ -0,0 +1,61 @@
+package com.gdgoc.study_group.study.application;
+
+import com.gdgoc.study_group.curriculum.domain.Curriculum;
+import com.gdgoc.study_group.curriculum.dto.CurriculumDTO;
+import com.gdgoc.study_group.day.domain.Day;
+import com.gdgoc.study_group.day.dto.DayDTO;
+import com.gdgoc.study_group.study.dao.StudyRepository;
+import com.gdgoc.study_group.study.domain.Study;
+import com.gdgoc.study_group.study.dto.StudyCreateRequest;
+import java.util.ArrayList;
+import org.springframework.stereotype.Service;
+
+@Service
+public class StudyService {
+
+  public final StudyRepository studyRepository;
+
+  public StudyService(StudyRepository studyRepository) {
+    this.studyRepository = studyRepository;
+  }
+
+  public Study createStudy(StudyCreateRequest request) {
+    Study study =
+        Study.builder()
+            .name(request.getName())
+            .description(request.getDescription())
+            .requirement(request.getRequirements())
+            .question(request.getQuestion())
+            .maxParticipants(request.getMaxParticipants())
+            .studyStatus(request.getStudyStatus())
+            .curriculums(new ArrayList<>()) // 빈 리스트로 초기화
+            .days(new ArrayList<>()) // 빈 리스트로 초기화
+            .isApplicationClosed(false) // 스터디 생성할 때 false로 설정
+            .build();
+
+    if (request.getCurriculums() != null) {
+      for (CurriculumDTO curriculumDTO : request.getCurriculums()) {
+        Curriculum curriculum =
+            Curriculum.builder()
+                .study(study)
+                .week(curriculumDTO.getWeek())
+                .subject(curriculumDTO.getSubject())
+                .build();
+        study.getCurriculums().add(curriculum);
+      }
+    }
+
+    if (request.getDays() != null) {
+      for (DayDTO dayDTO : request.getDays()) {
+        Day day =
+            Day.builder()
+                .study(study)
+                .day(dayDTO.getDay())
+                .startTime(dayDTO.getStartTime())
+                .build();
+      }
+    }
+
+    return studyRepository.save(study);
+  }
+}

src/main/java/com/gdgoc/study_group/study/domain/Study.java

@@ -8,8 +8,13 @@
 import jakarta.persistence.*;
 import java.util.ArrayList;
 import java.util.List;
+import lombok.*;
 
 @Entity
+@Builder
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@NoArgsConstructor
 public class Study {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -21,10 +26,10 @@ public class Study {
   @OneToMany(mappedBy = "study")
   private List<Round> rounds = new ArrayList<>();
 
-  @OneToMany(mappedBy = "study")
+  @OneToMany(mappedBy = "study", cascade = CascadeType.ALL, orphanRemoval = true)
   private List<Curriculum> curriculums = new ArrayList<>();
 
-  @OneToMany(mappedBy = "study")
+  @OneToMany(mappedBy = "study", cascade = CascadeType.ALL, orphanRemoval = true)
   private List<Day> days = new ArrayList<>();
 
   @OneToMany(mappedBy = "study")

src/main/java/com/gdgoc/study_group/study/dto/StudyCreateRequest.java

@@ -0,0 +1,21 @@
+package com.gdgoc.study_group.study.dto;
+
+import com.gdgoc.study_group.curriculum.dto.CurriculumDTO;
+import com.gdgoc.study_group.day.dto.DayDTO;
+import com.gdgoc.study_group.study.domain.StudyStatus;
+import java.util.List;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class StudyCreateRequest {
+  private String name;
+  private String description;
+  private String requirements;
+  private String question;
+  private Integer maxParticipants;
+  private StudyStatus studyStatus;
+  private List<CurriculumDTO> curriculums;
+  private List<DayDTO> days;
+}