[FEAT] 스플래시 조회 기능 구현

src/main/java/org/sopt/lequuServer/domain/common/controller/CommonController.java

@@ -0,0 +1,21 @@
+package org.sopt.lequuServer.domain.common.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.sopt.lequuServer.domain.common.facade.CommonFacade;
+import org.sopt.lequuServer.global.common.dto.ApiResponse;
+import org.sopt.lequuServer.global.exception.enums.SuccessType;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController("/api/common")
+@RequiredArgsConstructor
+public class CommonController {
+
+    private final CommonFacade commonFacade;
+
+    @GetMapping("/splash")
+    public ApiResponse<Long> getSplash() {
+        return ApiResponse.success(SuccessType.GET_SPLASH_SUCCESS, commonFacade.getSplash());
+    }
+
+}

src/main/java/org/sopt/lequuServer/domain/common/facade/CommonFacade.java

@@ -0,0 +1,17 @@
+package org.sopt.lequuServer.domain.common.facade;
+
+import lombok.RequiredArgsConstructor;
+import org.sopt.lequuServer.domain.note.service.NoteService;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class CommonFacade {
+
+    private final NoteService noteService;
+
+    public Long getSplash() {
+        return noteService.getAllNoteCount();
+    }
+
+}

src/main/java/org/sopt/lequuServer/domain/note/repository/NoteRepository.java

@@ -0,0 +1,7 @@
+package org.sopt.lequuServer.domain.note.repository;
+
+import org.sopt.lequuServer.domain.note.model.Note;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface NoteRepository extends JpaRepository<Note, Long> {
+}

src/main/java/org/sopt/lequuServer/domain/note/service/NoteService.java

@@ -0,0 +1,19 @@
+package org.sopt.lequuServer.domain.note.service;
+
+import lombok.RequiredArgsConstructor;
+import org.sopt.lequuServer.domain.note.repository.NoteRepository;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class NoteService {
+
+    private final NoteRepository noteRepository;
+
+    //TODO 되는지 검증 필요
+    public Long getAllNoteCount() {
+        return noteRepository.count();
+    }
+
+
+}

src/main/java/org/sopt/lequuServer/global/exception/enums/SuccessType.java

@@ -20,7 +20,9 @@ public enum SuccessType {
     LOGOUT_SUCCESS(HttpStatus.OK, "로그아웃에 성공했습니다."),
     KAKAO_ACCESS_TOKEN_SUCCESS(HttpStatus.OK, "카카오 엑세스 토큰을 가져오는데 성공했습니다."),
 
-    STICKER_PACK_LIST_SUCCESS(HttpStatus.OK, "스티커팩 목록 조회에 성공했습니다.");
+    STICKER_PACK_LIST_SUCCESS(HttpStatus.OK, "스티커팩 목록 조회에 성공했습니다."),
+    GET_SPLASH_SUCCESS(HttpStatus.OK, "전체 노트의 수를 성공적으로 조회했습니다."),
+    ;
 
     private final HttpStatus httpStatus;
     private final String message;