feat: #74 겹치는 트랙 있으면 위치 약간 조정해서 업로드

Author: dgh06175

src/main/java/com/cabin/plat/domain/track/service/TrackServiceImpl.java

@@ -21,6 +21,7 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
+import java.util.Random;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
@@ -103,6 +104,20 @@ public TrackResponse.TrackId likeTrack(Member member, Long trackId, Boolean isLi
     public TrackResponse.TrackId addTrack(Member member, TrackRequest.TrackUpload trackUpload) {
         double latitude = trackUpload.getLatitude();
         double longitude = trackUpload.getLongitude();
+
+        List<Track> nearTracks = trackRepository.findAllTracksWithinBounds(
+                latitude - 0.001,
+                latitude + 0.001,
+                longitude - 0.001,
+                longitude + 0.001
+        );
+
+        if (hasNearTrack(latitude, longitude, nearTracks)) {
+            List<Double> editedPosition = editOverlapPosition(latitude, longitude, nearTracks);
+            latitude = editedPosition.get(0);
+            longitude = editedPosition.get(1);
+        }
+
         AddressInfo addressInfo = reverseGeoCoding.getAddressInfo(latitude, longitude);
 
         Location location = locationRepository.save(trackMapper.toLocation(
@@ -117,6 +132,38 @@ public TrackResponse.TrackId addTrack(Member member, TrackRequest.TrackUpload tr
         return trackMapper.toTrackId(savedTrack.getId());
     }
 
+    private List<Double> editOverlapPosition(double latitude, double longitude, List<Track> nearTracks) {
+        List<Double> editedPosition = new ArrayList<>();
+        Random random = new Random();
+
+        int count = 0;
+        while (hasNearTrack(latitude, longitude, nearTracks)) {
+            if (count > 10) {
+                return editedPosition;
+            }
+            count++;
+            latitude += -0.0001 + (0.0002 * random.nextDouble());
+            longitude += -0.0001 + (0.0002 * random.nextDouble());
+            latitude = Math.round(latitude * 1_000_000) / 1_000_000.0;
+            longitude = Math.round(longitude * 1_000_000) / 1_000_000.0;
+        }
+
+        return List.of(latitude, longitude);
+    }
+
+    private boolean hasNearTrack(double la1, double lo1, List<Track> overlayTracks) {
+        for (Track track : overlayTracks) {
+            double la2 = track.getLocation().getLatitude();
+            double lo2 = track.getLocation().getLongitude();
+            double distance = Math.sqrt(Math.pow(la1 - la2, 2) + Math.pow(lo1 - lo2, 2));
+
+            if (distance <= 0.0001) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     @Override
     public TrackResponse.TrackDetailList getTrackFeeds(Member member, int page, int size) {
         List<Sort.Order> sorts = new ArrayList<>();

src/test/java/com/cabin/plat/domain/track/service/TrackServiceTest.java

@@ -357,6 +357,39 @@ void addTrackTest() {
         assertThat(trackDetail.getMember().getMemberId()).isEqualTo(member.getId());
     }
 
+    @Test
+    void 겹치는_트랙이_있으면_위치를_조정한다() {
+        // given
+        Member member = members.get(0);
+        TrackRequest.TrackUpload trackUpload1 = TrackRequest.TrackUpload.builder()
+                .isrc("isrc9")
+                .imageUrl("https://testimage9.com")
+                .content("테스트9")
+                .latitude(36.014188)
+                .longitude(129.325802)
+                .build();
+
+        TrackRequest.TrackUpload trackUpload2 = TrackRequest.TrackUpload.builder()
+                .isrc("test")
+                .imageUrl("https://testtest.com")
+                .content("테스트test")
+                .latitude(36.014108)
+                .longitude(129.325841)
+                .build();
+
+        // when
+        Long trackId1 = trackService.addTrack(member, trackUpload1).getTrackId();
+        Long trackId2 = trackService.addTrack(member, trackUpload2).getTrackId();
+
+        // then
+        TrackResponse.TrackDetail trackDetail1 = trackService.getTrackById(member, trackId1);
+        assertThat(trackDetail1.getLatitude()).isEqualTo(36.014188);
+        assertThat(trackDetail1.getLongitude()).isEqualTo(129.325802);
+        TrackResponse.TrackDetail trackDetail2 = trackService.getTrackById(member, trackId2);
+        assertThat(trackDetail2.getLatitude()).isNotEqualTo(36.014108);
+        assertThat(trackDetail2.getLongitude()).isNotEqualTo(129.325841);
+    }
+
     @Test
     void getTrackFeedsTest_개수만() {
         // given