refactor: Pomodoro, StudyLog 기능 전반 Kotlin 마이그레이션(#120)

* feat: PomodoroQueryService.kt, PomodoroCommandService.kt 구현
* feat: PomodoroRepository.kt, PomodoroJpaRepository.kt, PomodoroRepositoryAdapter.kt 구현
* feat: PomodoroErrorCode.kt, PomodoroPolicy.kt 구현
* feat: PomodoroFactory.kt 구현

* feat: StudyLogController.kt 구현
* feat: StudyLogFacade.kt 구현
* feat: StudyLogQueryService.kt, StudyLogCommandService.kt 구현
* feat: StudyLogRepository.kt, StudyLogJpaRepository.kt, StudyLogRepositoryAdapter.kt 구현
* feat: StudyLogErrorCode, StudyLogPolicy 구현
* feat: StudyLogFactory.kt 구현

* feat: CreatePomodoroRequest.kt DTO 추가
* feat: PomodoroInfo.kt DTO 추가
* feat: CreateStudyLogRequest.kt, PresignStudyLogImageRequest.kt, ConfirmStudyLogImageRequest.kt DTO 추가
* feat: CreateStudyLogResponse.kt, PresignedStudyLogImageResponse.kt, LoadStudyLogsSliceResponse.kt DTO 추가
* feat: StudyLogInfo.kt, StudyLogDetail.kt, StudyLogSliceInfo.kt, PresignedStudyLogImageInfo.kt DTO 추가

* refactor: Kotlin–Java 혼용 환경에서 안정적인 접근을 위해 도메인 엔티티에 명시적 getter 추가
* refactor: Kotlin–Java 혼용 환경에서 안정적인 접근을 위해 BaseTimeEntity에 명시적 getter 추가
* refactor: record → data class 전환에 따른 DTO 접근자 호출 방식(x() → getX()) 수정
* refactor: Policy에서 삭제 여부 판단을 위해 BaseTimeEntity에 isDeleted 메서드 추가

* refactor: java pomodoro presentation, application 패키지 제거 (Kotlin 마이그레이션 완료)
* refactor: java pomodoro domain factory, policy, error 패키지 제거 (Kotlin 마이그레이션 완료)
* refactor: java pomodoro infra jpa 패키지 제거 (Kotlin 마이그레이션 완료)
* refactor: java studyLog presentation 패키지 제거 (Kotlin 마이그레이션 완료)
* refactor: java studyLog application facade 패키지 제거 (Kotlin 마이그레이션 완료)
* refactor: java studyLog domain error, policy 패키지 제거 (Kotlin 마이그레이션 완료)

* test: PomodoroFixture.kt, CreatePomodoroRequestFixture.kt 추가
* test: PomodoroTestHelper.kt 추가
* test: PomodoroQueryServiceTest.kt, PomodoroCommandServiceTest.kt 단위 테스트 추가
* test: test java pomodoro 패키지 제거 (Kotlin 마이그레이션 완료)

* test: StudyLogFixture.kt, CreateStudyLogRequestFixture.kt, PresignStudyLogImageRequestFixture.kt, ConfirmStudyLogImageRequestFixture.kt 추가
* test: StudyLogTestHelper.kt 추가
* test: StudyLogQueryServiceTest, StudyLogCommandServiceTest 단위 테스트 추가
* test: StudyLogControllerIntegrationTest 통합 테스트 추가

* test: TokenFixture에 authorization 정적 메서드 추가
* test: StampTestHelper에 getStamp 정적 메서드 추가

* chore: build.gradle에 Kotlin 환경 설정 추가
* chore: build.gradle에 Spotless Kotlin 포맷팅 설정 추가

Author: chaiminwoo0223

build.gradle

@@ -2,9 +2,12 @@ plugins {
     id 'java'
     id 'org.springframework.boot' version '3.5.0'
     id 'io.spring.dependency-management' version '1.1.7'
-    id 'com.diffplug.spotless' version '6.21.0'
+    id 'com.diffplug.spotless' version '8.1.0'
     id 'org.flywaydb.flyway' version '11.11.2'
-    id 'org.jetbrains.kotlin.jvm'
+    id 'org.jetbrains.kotlin.jvm' version '2.2.21'
+    id 'org.jetbrains.kotlin.plugin.spring' version '2.2.21'
+    id 'org.jetbrains.kotlin.plugin.jpa' version '2.2.21'
+//    id 'org.jetbrains.kotlin.kapt' version '2.2.21'
 }
 
 group = 'com.ject'
@@ -52,6 +55,11 @@ dependencies {
     annotationProcessor "jakarta.annotation:jakarta.annotation-api"
     annotationProcessor "jakarta.persistence:jakarta.persistence-api"
 
+    // Querydsl (Kotlin용 – kapt 추가, Java용 Querydsl과 충돌이 발생하여 주석 처리)
+//    kapt "com.querydsl:querydsl-apt:5.0.0:jakarta"
+//    kapt "jakarta.annotation:jakarta.annotation-api"
+//    kapt "jakarta.persistence:jakarta.persistence-api"
+
     // Redis
     implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 
@@ -71,14 +79,20 @@ dependencies {
     // Tika : 이미지 타입 검사
     implementation 'org.apache.tika:tika-core:2.5.0'
 
+    // Kotlin
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation "org.jetbrains.kotlin:kotlin-reflect"
+    implementation "com.fasterxml.jackson.module:jackson-module-kotlin"
+    testImplementation "org.jetbrains.kotlin:kotlin-test"
+
     // Test
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.batch:spring-batch-test'
     testImplementation 'org.springframework.security:spring-security-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
     testImplementation 'org.mockito:mockito-core'
     testImplementation 'org.mockito:mockito-junit-jupiter'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    testImplementation "org.mockito.kotlin:mockito-kotlin:6.1.0"
 }
 
 jar.enabled = false // 일반 JAR 파일 생성 비활성화
@@ -96,6 +110,13 @@ spotless {
         endWithNewline()            // 파일 끝부분 개행 처리
         googleJavaFormat().aosp()   // google java format 스타일 적용
     }
+
+    kotlin {
+        target("**/*.kt")            // 모든 .kt 파일에 적용
+        ktlint("1.8.0")              // Kotlin 코드 스타일 검사 및 자동 포맷팅
+        trimTrailingWhitespace()     // 공백 제거
+        endWithNewline()             // 파일 끝부분 개행 처리
+    }
 }
 
 // pre-commit spotless check script

src/main/java/com/ject/studytrip/global/common/entity/BaseTimeEntity.java

@@ -4,14 +4,12 @@
 import jakarta.persistence.EntityListeners;
 import jakarta.persistence.MappedSuperclass;
 import java.time.LocalDateTime;
-import lombok.Getter;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 
 @EntityListeners(AuditingEntityListener.class)
 @MappedSuperclass
-@Getter
 public abstract class BaseTimeEntity {
 
     @CreatedDate
@@ -21,4 +19,20 @@ public abstract class BaseTimeEntity {
     @LastModifiedDate private LocalDateTime updatedAt;
 
     protected LocalDateTime deletedAt;
+
+    public boolean isDeleted() {
+        return deletedAt != null;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public LocalDateTime getDeletedAt() {
+        return deletedAt;
+    }
 }

src/main/java/com/ject/studytrip/member/domain/model/Member.java

@@ -10,7 +10,6 @@
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
-@Getter
 @Builder(access = AccessLevel.PRIVATE)
 public class Member extends BaseTimeEntity {
 
@@ -74,4 +73,36 @@ public void updateProfileImage(String profileImage) {
     public void updateDeletedAt() {
         this.deletedAt = LocalDateTime.now();
     }
+
+    public MemberCategory getCategory() {
+        return category;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public String getProfileImage() {
+        return profileImage;
+    }
+
+    public MemberRole getRole() {
+        return role;
+    }
+
+    public String getSocialId() {
+        return socialId;
+    }
+
+    public SocialProvider getSocialProvider() {
+        return socialProvider;
+    }
 }

src/main/java/com/ject/studytrip/mission/domain/model/DailyMission.java

@@ -9,7 +9,6 @@
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
-@Getter
 @Builder(access = AccessLevel.PRIVATE)
 public class DailyMission extends BaseTimeEntity {
 
@@ -32,4 +31,16 @@ public static DailyMission of(Mission mission, DailyGoal dailyGoal) {
     public void updateDeletedAt() {
         this.deletedAt = LocalDateTime.now();
     }
+
+    public DailyGoal getDailyGoal() {
+        return dailyGoal;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Mission getMission() {
+        return mission;
+    }
 }

src/main/java/com/ject/studytrip/mission/domain/model/Mission.java

@@ -11,7 +11,6 @@
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
-@Getter
 @Builder(access = AccessLevel.PRIVATE)
 public class Mission extends BaseTimeEntity {
 
@@ -43,4 +42,20 @@ public void updateDeletedAt() {
     public void updateCompleted() {
         this.completed = true;
     }
+
+    public boolean isCompleted() {
+        return completed;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Stamp getStamp() {
+        return stamp;
+    }
 }