feat: cluster dist 별 정렬

Author: KangmoonSeo

workspace/server/src/main/java/org/hellokicktty/server/controller/KickboardController.java

@@ -2,6 +2,7 @@
 
 import lombok.RequiredArgsConstructor;
 import org.hellokicktty.server.domain.Cluster;
+import org.hellokicktty.server.domain.Coordinate;
 import org.hellokicktty.server.domain.Kickboard;
 import org.hellokicktty.server.dto.KickboardListResponseDto;
 import org.hellokicktty.server.dto.KickboardResponseDto;
@@ -10,7 +11,9 @@
 import org.slf4j.LoggerFactory;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.Comparator;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import static org.hellokicktty.server.service.ClusterService.*;
 
@@ -26,7 +29,9 @@ public class KickboardController {
     KickboardListResponseDto findKickboards(Double lat, Double lng) {
 
         List<Kickboard> kickboardList = kickboardService.findKickboardsInOrder(lat, lng);
-        List<Cluster> clusters = clusterKickboards(kickboardList);
+        List<Cluster> clusters = clusterKickboards(kickboardList, lat, lng);
+
+
         Double distance = getShortestDistance(clusters);
 
         return new KickboardListResponseDto(distance, clusters, kickboardList);

workspace/server/src/main/java/org/hellokicktty/server/controller/RecommendController.java

@@ -19,7 +19,7 @@ public class RecommendController {
 
     Logger log = LoggerFactory.getLogger(Logger.class);
     private final KickboardService kickboardService;
-    private final int LEAST_CLUSTER_NUMBER = 4;
+    private final int MAX_CLUSTER_NUMBER = 4;
 
     @GetMapping("/recommend")
     public RecommendResponseDto recommendClustersByKickboardId(Long id) {
@@ -28,8 +28,8 @@ public RecommendResponseDto recommendClustersByKickboardId(Long id) {
         if (kickboard == null) return new RecommendResponseDto();
 
         List<Kickboard> kickboardList = kickboardService.findKickboardsInOrder(kickboard.getLat(), kickboard.getLng());
-        List<Cluster> clusters = ClusterService.clusterKickboards(kickboardList);
-        clusters.subList(0, Math.min(LEAST_CLUSTER_NUMBER, clusters.size()));
+        List<Cluster> clusters = ClusterService.clusterKickboards(kickboardList, kickboard.getLat(), kickboard.getLng());
+        clusters = clusters.subList(0, Math.min(MAX_CLUSTER_NUMBER, clusters.size()));
 
         return new RecommendResponseDto(clusters);
     }

workspace/server/src/main/java/org/hellokicktty/server/controller/UpdateController.java

@@ -7,6 +7,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 
 import java.util.List;
@@ -19,7 +20,8 @@ public class UpdateController {
     private final KickboardService kickboardService;
 
     @PostMapping("/update")
-    public void updateKickboards(UpdateRequestDto dto) {
+    public void updateKickboards(@RequestBody UpdateRequestDto dto) {
+        
         List<Kickboard> kickboardList = dto.getKickboards();
         for (Kickboard k : kickboardList) {
             kickboardService.updateKickboard(k);

workspace/server/src/main/java/org/hellokicktty/server/repository/JpaKickboardRepository.java

@@ -24,6 +24,7 @@ public Long save(Kickboard kickboard) {
         return kickboard.getId();
     }
 
+    @Transactional
     public Long update(Kickboard k) {
         Kickboard kickboard = em.find(Kickboard.class, k.getId());
         kickboard.update(k.getCluster_id(), k.getDanger(), k.getBorder());

workspace/server/src/main/java/org/hellokicktty/server/service/ClusterService.java

@@ -6,10 +6,8 @@
 import org.hellokicktty.server.domain.Kickboard;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.TreeMap;
+import java.util.*;
+import java.util.stream.Collectors;
 
 @Service
 @RequiredArgsConstructor
@@ -18,9 +16,9 @@ public class ClusterService {
 
     // == utils ==
 
-    public static List<Cluster> clusterKickboards(List<Kickboard> kickboardList) {
+    public static List<Cluster> clusterKickboards(List<Kickboard> kickboardList, Double lat, Double lng) {
 
-        Map<Long, Cluster> clusterMap = new TreeMap<>();
+        Map<Long, Cluster> clusterMap = new HashMap<>();
         for (Kickboard kickboard : kickboardList) {
             if (kickboard.getBorder()) {
                 Long cluster_id = kickboard.getCluster_id();
@@ -38,8 +36,27 @@ public static List<Cluster> clusterKickboards(List<Kickboard> kickboardList) {
             List<Coordinate> borders = cluster.getBorders();
             Coordinate center = getCenter(borders);
             cluster.setCenter(center);
+
+            if (lat == null || lng == null) {
+                cluster.setDistance(-1d);
+                continue;
+            }
+            double dist = 1e9d;
+
+            for (Coordinate border : borders) {
+                Double delta = KickboardService.getCoordinateDelta(new Coordinate(lat, lng), border);
+                delta = KickboardService.coordinateToMeter(delta);
+                dist = Math.min(dist, delta);
+            }
+            cluster.setDistance(dist);
         }
-        return new ArrayList<>(clusterMap.values());
+        if (lat == null || lng == null) return clusterList;
+
+        clusterList = clusterList.stream()
+                .sorted(Comparator.comparingDouble(Cluster::getDistance))
+                .collect(Collectors.toList());
+
+        return clusterList;
     }
 
     public static Coordinate getCenter(List<Coordinate> borders) {

workspace/server/src/main/java/org/hellokicktty/server/service/KickboardService.java

@@ -29,7 +29,7 @@ public class KickboardService {
 
     public static double CLUSTER_COORDINATE_RANGE = 0.00001 * CLUSTER_METER_RANGE; // degree
 
-    private final String URL = "http://localhost:8081/cluster"; // AI Server Request End-Point
+    private final String URL = "http://localhost:8001/cluster"; // AI Server Request End-Point
 
     @PostConstruct
     public void init() {
@@ -150,9 +150,8 @@ public static Double getCoordinateDelta(Coordinate u, Coordinate v) {
         return Math.sqrt(Math.pow(dLat, 2) + Math.pow(dLng, 2));
     }
 
-    public static Double convertCtoM(Double coordinateDelta) {
-        return coordinateDelta * 0.00001;
+    public static Double coordinateToMeter(Double coordinateDelta) {
+        return coordinateDelta * 100000;
     }
 
-
 }