✨ feat : 근처 가게 위치 목록 조회 API 구현

Author: oroi2009

src/main/java/com/example/Centralthon/domain/store/repository/StoreRepository.java

@@ -1,9 +1,30 @@
 package com.example.Centralthon.domain.store.repository;
 
+import com.example.Centralthon.domain.menu.entity.Menu;
 import com.example.Centralthon.domain.store.entity.Store;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.stereotype.Repository;
 
+import java.time.LocalDateTime;
+import java.util.List;
+
 @Repository
 public interface StoreRepository extends JpaRepository<Store, Long> {
+    @Query(value = "SELECT s.* FROM stores s " +
+            "WHERE s.latitude BETWEEN :minLat AND :maxLat AND s.longitude BETWEEN :minLng AND :maxLng " +
+            "AND ST_Distance_Sphere(POINT(s.longitude, s.latitude), POINT(:lng, :lat)) <= 2000 " +
+            "AND EXISTS ( " +
+            "    SELECT 1 FROM menus m " +
+            "    WHERE m.store_id = s.store_id AND m.quantity > 0 AND m.deadline > NOW())"
+            , nativeQuery = true)
+    List<Store> findNearbyStores(
+            double lat,
+            double lng,
+            LocalDateTime now,
+            double minLat,
+            double maxLat,
+            double minLng,
+            double maxLng
+    );
 }

src/main/java/com/example/Centralthon/domain/store/service/StoreService.java

@@ -0,0 +1,10 @@
+package com.example.Centralthon.domain.store.service;
+
+import com.example.Centralthon.domain.store.web.dto.NearbyStoresRes;
+
+import java.util.List;
+
+public interface StoreService {
+    List<NearbyStoresRes> nearbyStores(double lat, double lng);
+
+}

src/main/java/com/example/Centralthon/domain/store/service/StoreServiceImpl.java

@@ -0,0 +1,36 @@
+package com.example.Centralthon.domain.store.service;
+
+import com.example.Centralthon.domain.store.entity.Store;
+import com.example.Centralthon.domain.store.repository.StoreRepository;
+import com.example.Centralthon.domain.store.web.dto.NearbyStoresRes;
+import com.example.Centralthon.global.util.geo.BoundingBox;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+import static com.example.Centralthon.global.util.geo.GeoUtils.calculateBoundingBox;
+
+@Service
+@RequiredArgsConstructor
+public class StoreServiceImpl implements StoreService {
+    private final StoreRepository storeRepository;
+
+    @Override
+    @Transactional(readOnly = true)
+    public List<NearbyStoresRes> nearbyStores(double lat, double lng) {
+        LocalDateTime now = LocalDateTime.now();
+
+        // 사용자 위치를 기반으로 2km 반경의 Bounding Box 계산
+        BoundingBox bbox = calculateBoundingBox(lat, lng, 2.0);
+
+        List<Store> stores = storeRepository.findNearbyStores(lat, lng, now,
+                bbox.minLat(), bbox.maxLat(), bbox.minLng(), bbox.maxLng());
+
+        return stores.stream()
+                .map(store -> NearbyStoresRes.from(store))
+                .toList();
+    }
+}

src/main/java/com/example/Centralthon/domain/store/web/controller/StoreController.java

@@ -0,0 +1,31 @@
+package com.example.Centralthon.domain.store.web.controller;
+
+import com.example.Centralthon.domain.store.service.StoreService;
+import com.example.Centralthon.domain.store.web.dto.NearbyStoresRes;
+import com.example.Centralthon.global.response.SuccessResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/stores")
+@RequiredArgsConstructor
+public class StoreController {
+    private final StoreService storeService;
+
+    // 근처 가게 위치 목록 조회
+    @GetMapping("")
+    public ResponseEntity<SuccessResponse<List<NearbyStoresRes>>> nearbyStores(
+            @RequestParam("lat") Double lat,
+            @RequestParam("lng") Double lng){
+
+        List<NearbyStoresRes> stores = storeService.nearbyStores(lat, lng);
+
+        return ResponseEntity.status(HttpStatus.OK).body(SuccessResponse.from(stores));
+    }
+}

src/main/java/com/example/Centralthon/domain/store/web/dto/NearbyStoresRes.java

@@ -0,0 +1,17 @@
+package com.example.Centralthon.domain.store.web.dto;
+
+import com.example.Centralthon.domain.store.entity.Store;
+
+public record NearbyStoresRes(
+        Long storeId,
+        Double lat,
+        Double lng
+) {
+    public static NearbyStoresRes from(Store store){
+        return new NearbyStoresRes(
+                store.getId(),
+                store.getLatitude(),
+                store.getLongitude()
+        );
+    }
+}