[J2KB-3rd-Season#21]feat: 답변 삭제 추가

Author: enjay27

src/main/java/com/devin/dev/controller/reply/ReplyController.java

@@ -1,5 +1,6 @@
 package com.devin.dev.controller.reply;
 
+import com.devin.dev.controller.post.ReplyUpdateForm;
 import com.devin.dev.dto.reply.ReplyDto;
 import com.devin.dev.model.DefaultResponse;
 import com.devin.dev.service.ReplyService;
@@ -10,6 +11,7 @@
 import org.springframework.data.domain.Pageable;
 import org.springframework.web.bind.annotation.*;
 
+import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;
 import javax.validation.constraints.NotEmpty;
 import java.util.List;
@@ -30,6 +32,11 @@ public DefaultResponse<?> reply(@PathVariable("id") Long replyId, @RequestBody @
         return replyService.editReply(replyId, form, request);
     }
 
+    @DeleteMapping("/reply/{id}")
+    public DefaultResponse<?> reply(@PathVariable("id") Long replyId, HttpServletRequest request) {
+        return replyService.deleteReply(replyId, request);
+    }
+
     @Data
     private static class CreateReplyResponse {
         private Long id;
@@ -39,18 +46,6 @@ public CreateReplyResponse(Long id) {
         }
     }
 
-    @Data
-    private static class CreateReplyRequest {
-        @NotEmpty
-        private Long postId;
-        @NotEmpty
-        private Long userId;
-        @NotEmpty
-        private String content;
-        @NotEmpty
-        private List<String> replyImages;
-    }
-
     @Data
     @AllArgsConstructor
     static class Result<T> {

src/main/java/com/devin/dev/service/ReplyService.java

@@ -302,4 +302,44 @@ public DefaultResponse<?> editReply(Long replyId, ReplyUpdateForm form, HttpServ
         return new DefaultResponse<>(StatusCode.SUCCESS, ResponseMessage.REPLY_EDIT_SUCCESS, replyDto);
     }
 
+    @Transactional
+    public DefaultResponse<?> deleteReply(Long replyId, HttpServletRequest request) {
+        String token = tokenProvider.parseToken(request);
+        Long userId;
+        if (tokenProvider.validateToken(token)) {
+            userId = tokenProvider.getUserId(token);
+        } else {
+            return new DefaultResponse<>(StatusCode.FAIL_AUTH, ResponseMessage.NOT_FOUND_USER);
+        }
+        Optional<User> userOptional = userRepository.findById(userId);
+        if (userOptional.isEmpty()) {
+            return new DefaultResponse<>(StatusCode.NOT_EXIST, ResponseMessage.NOT_FOUND_USER);
+        }
+        User user = userOptional.get();
+
+        Optional<Reply> replyOptional = replyRepository.findById(replyId);
+        if (replyOptional.isEmpty()) {
+            return new DefaultResponse<>(StatusCode.NOT_EXIST, ResponseMessage.NOT_FOUND_REPLY);
+        }
+        Reply reply = replyOptional.get();
+
+        // 작성자 확인
+        if (isNotSameUser(user, reply.getUser())) {
+            return new DefaultResponse<>(StatusCode.CONDITION_FAIL, ResponseMessage.NOT_SAME_USER);
+        }
+
+        // 채택된 답변인지 확인
+        if (reply.getStatus() == ReplyStatus.SELECTED) {
+            return new DefaultResponse<>(StatusCode.CONDITION_FAIL, ResponseMessage.CANNOT_DELETE_SELECTED);
+        }
+
+        // 리플 작성자 경험치 삭제
+        user.changeExp(User.ExpChangeType.DELETE_REPLY);
+
+        // 댓글 상태변경 DELETED 후 저장
+        reply.setStatus(ReplyStatus.DELETED);
+        replyRepository.save(reply);
+
+        return new DefaultResponse<>(StatusCode.SUCCESS, ResponseMessage.REPLY_DELETE_SUCCESS);
+    }
 }