feat: 유저의 친구 조회 기능을 개발한다

depromeet · Jan 3, 2024 · 40cb649 · 40cb649
1 parent efbcd30
commit 40cb649
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diff --git a/src/main/java/net/teumteum/user/controller/UserController.java b/src/main/java/net/teumteum/user/controller/UserController.java
@@ -5,6 +5,7 @@
 import net.teumteum.core.context.LoginContext;
 import net.teumteum.core.error.ErrorResponse;
 import net.teumteum.user.domain.request.UserUpdateRequest;
+import net.teumteum.user.domain.response.FriendsResponse;
 import net.teumteum.user.domain.response.UserGetResponse;
 import net.teumteum.user.domain.response.UsersGetByIdResponse;
 import net.teumteum.user.service.UserService;
@@ -56,6 +57,11 @@ public void addFriend(@PathVariable("friendId") Long friendId) {
         userService.addFriends(loginContext.getUserId(), friendId);
     }
 
+    @GetMapping("/{userId}/friends")
+    @ResponseStatus(HttpStatus.OK)
+    public FriendsResponse findFriends(@PathVariable("userId") Long userId) {
+        return userService.findFriendsByUserId(userId);
+    }
 
     @ResponseStatus(HttpStatus.BAD_REQUEST)
     @ExceptionHandler(IllegalArgumentException.class)

diff --git a/src/main/java/net/teumteum/user/service/UserService.java b/src/main/java/net/teumteum/user/service/UserService.java
@@ -5,6 +5,7 @@
 import net.teumteum.user.domain.User;
 import net.teumteum.user.domain.UserRepository;
 import net.teumteum.user.domain.request.UserUpdateRequest;
+import net.teumteum.user.domain.response.FriendsResponse;
 import net.teumteum.user.domain.response.UserGetResponse;
 import net.teumteum.user.domain.response.UsersGetByIdResponse;
 import org.springframework.stereotype.Service;
@@ -52,6 +53,13 @@ public void addFriends(Long myId, Long friendId) {
         me.addFriend(friend);
     }
 
+    public FriendsResponse findFriendsByUserId(Long userId) {
+        var user = getUser(userId);
+        var friends = userRepository.findAllById(user.getFriends());
+
+        return FriendsResponse.of(friends);
+    }
+
     private User getUser(Long userId) {
         return userRepository.findById(userId)
             .orElseThrow(() -> new IllegalArgumentException("userId에 해당하는 user를 찾을 수 없습니다. \"" + userId + "\""));