feat : left friend

src/main/java/com/investment/findfriend/domain/feed/service/GetFeedService.java

@@ -24,7 +24,7 @@ public ResponseEntity<FeedResponse> execute(Long feedId) {
                 .name(feed.getFriend().getName())
                 .content(feed.getContent())
                 .tags(feed.getTags())
-                .url(serverProperties.getUrl() + "/file?fileId=" + feed.getFriend().getFile().getId())
+                .url(feed.getFriend().getFile() != null ? serverProperties.getUrl() + "/file?fileId=" + feed.getFriend().getFile().getId() : null)
                 .build()
         );
     }

src/main/java/com/investment/findfriend/domain/friend/presentation/FriendController.java

@@ -22,6 +22,7 @@ public class FriendController {
     private final GetFriendListService getFriendListService;
     private final UpdateAuthorityService updateAuthorityService;
     private final GetFreeFriendListService getFreeFriendListService;
+    private final DeleteFriendService deleteFriendService;
 
 
     @PostMapping(value = "/meet", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
@@ -44,4 +45,9 @@ public ResponseEntity<List<FriendResponse>> getFreeFriendList() {
         return getFreeFriendListService.execute();
     }
 
+    @DeleteMapping
+    public ResponseEntity<String> leftFriend(@RequestParam Long friendId) {
+        return deleteFriendService.execute(friendId);
+    }
+
 }

src/main/java/com/investment/findfriend/domain/friend/service/DeleteFriendService.java

@@ -0,0 +1,20 @@
+package com.investment.findfriend.domain.friend.service;
+
+import com.investment.findfriend.domain.friend.repository.FriendRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class DeleteFriendService {
+
+    private final FriendRepository friendRepository;
+
+    public ResponseEntity<String> execute(Long friendId) {
+        friendRepository.deleteById(friendId);
+        return ResponseEntity.ok("success");
+    }
+}