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

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;
+    }
 }

src/main/java/com/ject/studytrip/pomodoro/domain/model/Pomodoro.java

@@ -9,7 +9,6 @@
 @Entity
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
-@Getter
 @Builder(access = AccessLevel.PRIVATE)
 public class Pomodoro extends BaseTimeEntity {
 
@@ -49,4 +48,28 @@ public void updateTotalFocusTimeInSeconds(int totalFocusTimeInSeconds) {
     public void updateDeletedAt() {
         this.deletedAt = LocalDateTime.now();
     }
+
+    public Long getId() {
+        return id;
+    }
+
+    public DailyGoal getDailyGoal() {
+        return dailyGoal;
+    }
+
+    public int getFocusDurationInSeconds() {
+        return focusDurationInSeconds;
+    }
+
+    public int getFocusSessionCount() {
+        return focusSessionCount;
+    }
+
+    public int getBreakDurationInSeconds() {
+        return breakDurationInSeconds;
+    }
+
+    public int getTotalFocusTimeInSeconds() {
+        return totalFocusTimeInSeconds;
+    }
 }