[feat] 유저 장소 저장 API 구현

src/main/java/com/wayble/server/user/controller/UserPlaceController.java

@@ -0,0 +1,36 @@
+package com.wayble.server.user.controller;
+
+import com.wayble.server.common.response.CommonResponse;
+import com.wayble.server.user.dto.UserPlaceRequestDto;
+import com.wayble.server.user.service.UserPlaceService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/v1/users/{userId}/places")
+@RequiredArgsConstructor
+public class UserPlaceController {
+
+    private final UserPlaceService userPlaceService;
+
+    @PostMapping
+    @Operation(summary = "유저 장소 저장", description = "유저가 웨이블존을 장소로 저장합니다.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "장소 저장 성공"),
+            @ApiResponse(responseCode = "400", description = "이미 저장한 장소입니다."),
+            @ApiResponse(responseCode = "404", description = "해당 유저 또는 웨이블존이 존재하지 않음")
+    })
+    public CommonResponse<String> saveUserPlace(
+            @PathVariable Long userId,
+            @RequestBody UserPlaceRequestDto request,
+
+            // 테스트를 위해 임시 허용 (로그인 구현되면 삭제)
+            @RequestHeader(value = "Authorization", required = false) String authorizationHeader
+    ) {
+        userPlaceService.saveUserPlace(request);
+        return CommonResponse.success("장소가 저장되었습니다.");
+    }
+}

src/main/java/com/wayble/server/user/dto/UserPlaceRequestDto.java

@@ -0,0 +1,9 @@
+package com.wayble.server.user.dto;
+
+import jakarta.validation.constraints.NotNull;
+
+public record UserPlaceRequestDto(
+        @NotNull Long userId,
+        @NotNull Long waybleZoneId,
+        @NotNull String title
+) {}

src/main/java/com/wayble/server/user/entity/User.java

@@ -58,5 +58,6 @@ public class User extends BaseEntity {
 
     // TODO 프로필 이미지 관련 작업 필요
 
-    // TODO 내가 저장한 장소 관련 작업 필요
+    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<UserPlace> userPlaces = new ArrayList<>();
 }

src/main/java/com/wayble/server/user/exception/UserErrorCase.java

@@ -8,7 +8,9 @@
 @RequiredArgsConstructor
 public enum UserErrorCase implements ErrorCase {
 
-    USER_NOT_FOUND(400, 1001, "사용자를 찾을 수 없습니다.");
+    USER_NOT_FOUND(400, 1001, "사용자를 찾을 수 없습니다."),
+    WAYBLE_ZONE_NOT_FOUND(404, 1002, "해당 웨이블존을 찾을 수 없습니다."),
+    PLACE_ALREADY_SAVED(400, 1003, "이미 저장한 장소입니다.");
 
     private final Integer httpStatusCode;
     private final Integer errorCode;

src/main/java/com/wayble/server/user/repository/UserPlaceRepository.java

@@ -0,0 +1,10 @@
+package com.wayble.server.user.repository;
+
+import com.wayble.server.user.entity.UserPlace;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface UserPlaceRepository extends JpaRepository<UserPlace, Long> {
+    Optional<UserPlace> findByUser_IdAndTitle(Long userId, String title);
+}

src/main/java/com/wayble/server/user/repository/UserPlaceWaybleZoneMappingRepository.java

@@ -0,0 +1,8 @@
+package com.wayble.server.user.repository;
+
+import com.wayble.server.user.entity.UserPlaceWaybleZoneMapping;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserPlaceWaybleZoneMappingRepository extends JpaRepository<UserPlaceWaybleZoneMapping, Long> {
+    boolean existsByUserPlace_User_IdAndWaybleZone_Id(Long userId, Long zoneId);
+}

src/main/java/com/wayble/server/user/service/UserPlaceService.java

@@ -0,0 +1,57 @@
+package com.wayble.server.user.service;
+
+
+import com.wayble.server.common.exception.ApplicationException;
+import com.wayble.server.user.dto.UserPlaceRequestDto;
+import com.wayble.server.user.entity.User;
+import com.wayble.server.user.entity.UserPlace;
+import com.wayble.server.user.entity.UserPlaceWaybleZoneMapping;
+import com.wayble.server.user.exception.UserErrorCase;
+import com.wayble.server.user.repository.UserPlaceRepository;
+import com.wayble.server.user.repository.UserPlaceWaybleZoneMappingRepository;
+import com.wayble.server.user.repository.UserRepository;
+import com.wayble.server.wayblezone.entity.WaybleZone;
+import com.wayble.server.wayblezone.repository.WaybleZoneRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class UserPlaceService {
+
+    private final UserRepository userRepository;
+    private final WaybleZoneRepository waybleZoneRepository;
+    private final UserPlaceRepository userPlaceRepository;
+    private final UserPlaceWaybleZoneMappingRepository mappingRepository;
+
+    public void saveUserPlace(UserPlaceRequestDto request) {
+        // 유저 존재 확인
+        User user = userRepository.findById(request.userId())
+                .orElseThrow(() -> new ApplicationException(UserErrorCase.USER_NOT_FOUND));
+
+        // 웨이블존 존재 확인
+        WaybleZone waybleZone = waybleZoneRepository.findById(request.waybleZoneId())
+                .orElseThrow(() -> new ApplicationException(UserErrorCase.WAYBLE_ZONE_NOT_FOUND));
+
+        // 중복 저장 확인
+        boolean alreadySaved = mappingRepository.existsByUserPlace_User_IdAndWaybleZone_Id(request.userId(), request.waybleZoneId());
+        if (alreadySaved) {
+            throw new ApplicationException(UserErrorCase.PLACE_ALREADY_SAVED);
+        }
+
+        // 저장
+        UserPlace userPlace = userPlaceRepository.save(
+                UserPlace.builder()
+                        .title(request.title())
+                        .user(user)
+                        .build()
+        );
+
+        mappingRepository.save(
+                UserPlaceWaybleZoneMapping.builder()
+                        .userPlace(userPlace)
+                        .waybleZone(waybleZone)
+                        .build()
+        );
+    }
+}