feat: 500m 이내 FireStation 정보 반환 api 추가

src/main/java/seouldata/seoul_backend/domain/firestation/application/dto/request/FireStationRequest.java

@@ -0,0 +1,21 @@
+package seouldata.seoul_backend.domain.firestation.application.dto.request;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+public class FireStationRequest {
+
+    @Getter
+    @NoArgsConstructor
+    public static class FireStationNearRequest {
+        private double userLon;
+        private double userLat;
+
+        @Builder
+        public FireStationNearRequest(double userLon, double userLat) {
+            this.userLat = userLat;
+            this.userLon = userLon;
+        }
+    }
+}

src/main/java/seouldata/seoul_backend/domain/firestation/application/dto/response/FireStationResponse.java

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+package seouldata.seoul_backend.domain.firestation.application.dto.response;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+public class FireStationResponse {
+
+    @Getter
+    @NoArgsConstructor
+    public static class FireStationNearResponse {
+        private Long id;
+        private String name;
+        private double lon;
+        private double lat;
+
+        @Builder
+        public FireStationNearResponse(Long id, String name, double lon, double lat) {
+            this.id = id;
+            this.name = name;
+            this.lon = lon;
+            this.lat = lat;
+        }
+
+    }
+}

src/main/java/seouldata/seoul_backend/domain/firestation/application/service/FireStationGetService.java

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+package seouldata.seoul_backend.domain.firestation.application.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import seouldata.seoul_backend.common.DistanceUtils;
+import seouldata.seoul_backend.domain.firestation.application.dto.request.FireStationRequest;
+import seouldata.seoul_backend.domain.firestation.application.dto.response.FireStationResponse;
+import seouldata.seoul_backend.domain.firestation.domain.entity.FireStation;
+import seouldata.seoul_backend.domain.firestation.domain.service.FireStationQueryService;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class FireStationGetService {
+
+    private final FireStationQueryService fireStationQueryService;
+
+    public List<FireStationResponse.FireStationNearResponse> getFireStationNear(FireStationRequest.FireStationNearRequest fireStationNearRequest) {
+        // 사용자의 위치
+        double userLon = fireStationNearRequest.getUserLon();
+        double userLat = fireStationNearRequest.getUserLat();
+
+        List<FireStation> allFireStation = fireStationQueryService.findAll();
+
+        List<FireStationResponse.FireStationNearResponse> nearFireStations = new ArrayList<>();
+
+        for (FireStation fireStation : allFireStation) {
+            double lat = fireStation.getLat();
+            double lon = fireStation.getLon();
+
+            double distance = DistanceUtils.calculateDistance(userLon, userLat, lon, lat);
+            if(distance <= 500) {
+                FireStationResponse.FireStationNearResponse nearFireStation = FireStationResponse.FireStationNearResponse.builder()
+                        .id(fireStation.getId())
+                        .name(fireStation.getName())
+                        .lon(fireStation.getLon())
+                        .lat(fireStation.getLat())
+                        .build();
+
+                nearFireStations.add(nearFireStation);
+            }
+        }
+
+        return nearFireStations;
+    }
+
+}

src/main/java/seouldata/seoul_backend/domain/firestation/domain/service/FireStationQueryService.java

@@ -0,0 +1,19 @@
+package seouldata.seoul_backend.domain.firestation.domain.service;
+
+import jakarta.transaction.Transactional;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import seouldata.seoul_backend.domain.firestation.domain.entity.FireStation;
+import seouldata.seoul_backend.domain.firestation.domain.repository.FireStationRepository;
+
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class FireStationQueryService {
+    private final FireStationRepository fireStationRepository;
+    public List<FireStation> findAll() {
+        return fireStationRepository.findAll();
+    }
+}

src/main/java/seouldata/seoul_backend/domain/firestation/presentation/FireStationController.java

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+package seouldata.seoul_backend.domain.firestation.presentation;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import seouldata.seoul_backend.domain.firestation.application.dto.request.FireStationRequest;
+import seouldata.seoul_backend.domain.firestation.application.dto.response.FireStationResponse;
+import seouldata.seoul_backend.domain.firestation.application.service.FireStationGetService;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+public class FireStationController {
+
+    private final FireStationGetService fireStationGetService;
+
+    @GetMapping("/api/firestation")
+    public ResponseEntity getFireStationNear(@RequestBody FireStationRequest.FireStationNearRequest fireStationNearRequest) {
+        List<FireStationResponse.FireStationNearResponse> fireStationNear = fireStationGetService.getFireStationNear(fireStationNearRequest);
+        return ResponseEntity.ok(fireStationNear);
+    }
+
+}