feat: kakao-navi-api 연동 DistanceSearchService 및 distanceInfo Dto생성

backend/src/main/java/com/team14/cherrybnb/revervation/application/DistanceSearchService.java

@@ -0,0 +1,58 @@
+package com.team14.cherrybnb.revervation.application;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.team14.cherrybnb.revervation.dto.DistanceInfo;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.util.UriComponentsBuilder;
+
+@Service
+public class DistanceSearchService {
+
+    @Value("${kakao.rest.api.key}")
+    private String kakaoKey;
+
+    public DistanceInfo navi(double originX, double originY, double destinationX, double destionationY) throws JsonProcessingException {
+        RestTemplate restTemplate = new RestTemplate();
+        String url = getUrl(originX, originY, destinationX, destionationY);
+        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.GET, new HttpEntity<>(getHeaders()), String.class);
+
+        ObjectMapper objectMapper = new ObjectMapper();
+
+        JsonNode body = objectMapper.readTree(response.getBody());
+        JsonNode summary = body.get("Summary");
+        double distance = summary.get("distance").asDouble();
+        double duration = summary.get("duration").asDouble();
+
+        return new DistanceInfo(distance, duration);
+    }
+
+    private MultiValueMap<String, String> getHeaders() {
+        MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
+        headers.add("host", "apis-navi.kakaomobility.com");
+        headers.add("Authorization", "KakaoAK " + kakaoKey);
+
+        return headers;
+    }
+
+    private String getUrl(double originX, double originY, double destinationX, double destinationY) {
+        String url = "https://apis-navi.kakaomobility.com/v1/directions";
+        String origin = originX + ", " + originY;
+        String destination = destinationX + ", " + destinationY;
+        return UriComponentsBuilder.fromHttpUrl(url)
+                .queryParam("origin", origin)
+                .queryParam("destination", destination)
+                .queryParam("summary", true)
+                .encode()
+                .toUriString();
+
+    }
+}

backend/src/main/java/com/team14/cherrybnb/revervation/dto/DistanceInfo.java

@@ -0,0 +1,23 @@
+package com.team14.cherrybnb.revervation.dto;
+
+import lombok.Getter;
+
+@Getter
+public class DistanceInfo {
+
+    private double distance;
+    private double duration;
+
+    public DistanceInfo(double distance, double duration) {
+        this.distance = toKm(distance);
+        this.duration = toMin(duration);
+    }
+
+    private double toKm(double distance) {
+        return distance/1000;
+    }
+
+    private double toMin(double duration) {
+        return duration/60;
+    }
+}

backend/src/main/resources/application.yml

@@ -27,3 +27,5 @@ spring:
 
 logging.level:
   org.hibernate.SQL: debug
+
+kakao.rest.api.key: ${KAKAO_REST_KEY}