feat(service): 新增根据ID获取AI角色详情接口

src/main/java/com/yolo/keyborad/controller/AiCompanionController.java

@@ -70,4 +70,15 @@ public class AiCompanionController {
         List<AiCompanionVO> result = aiCompanionService.getChattedCompanions(userId);
         return ResultUtils.success(result);
     }
+
+    @GetMapping("/{companionId}")
+    @Operation(summary = "根据ID获取AI角色详情", description = "根据AI角色ID查询角色详细信息，包含点赞数、评论数和当前用户点赞状态")
+    public BaseResponse<AiCompanionVO> getCompanionById(@PathVariable Long companionId) {
+        if (companionId == null) {
+            throw new BusinessException(ErrorCode.COMPANION_ID_EMPTY);
+        }
+        Long userId = StpUtil.getLoginIdAsLong();
+        AiCompanionVO result = aiCompanionService.getCompanionById(userId, companionId);
+        return ResultUtils.success(result);
+    }
 }

src/main/java/com/yolo/keyborad/service/KeyboardAiCompanionService.java

@@ -55,4 +55,13 @@ public interface KeyboardAiCompanionService extends IService<KeyboardAiCompanion
      * @return 聊过天的AI角色列表
      */
     List<AiCompanionVO> getChattedCompanions(Long userId);
+
+    /**
+     * 根据ID获取AI角色详情（带点赞数、评论数和当前用户点赞状态）
+     *
+     * @param userId      当前用户ID
+     * @param companionId AI角色ID
+     * @return AI角色详情
+     */
+    AiCompanionVO getCompanionById(Long userId, Long companionId);
 }

src/main/java/com/yolo/keyborad/service/impl/KeyboardAiCompanionServiceImpl.java

@@ -262,4 +262,39 @@ public class KeyboardAiCompanionServiceImpl extends ServiceImpl<KeyboardAiCompan
                     return vo;
                 }).collect(Collectors.toList());
     }
+
+    @Override
+    public AiCompanionVO getCompanionById(Long userId, Long companionId) {
+        // 查询AI角色
+        KeyboardAiCompanion companion = this.getById(companionId);
+        if (companion == null) {
+            throw new BusinessException(ErrorCode.COMPANION_NOT_FOUND);
+        }
+        if (companion.getStatus() != 1 || companion.getVisibility() != 1) {
+            throw new BusinessException(ErrorCode.COMPANION_NOT_FOUND);
+        }
+
+        // 统计点赞数
+        LambdaQueryWrapper<KeyboardAiCompanionLike> likeWrapper = new LambdaQueryWrapper<>();
+        likeWrapper.eq(KeyboardAiCompanionLike::getCompanionId, companionId)
+                .eq(KeyboardAiCompanionLike::getStatus, (short) 1);
+        long likeCount = companionLikeService.count(likeWrapper);
+
+        // 统计评论数
+        LambdaQueryWrapper<KeyboardAiCompanionComment> commentWrapper = new LambdaQueryWrapper<>();
+        commentWrapper.eq(KeyboardAiCompanionComment::getCompanionId, companionId)
+                .eq(KeyboardAiCompanionComment::getStatus, (short) 1);
+        long commentCount = companionCommentService.count(commentWrapper);
+
+        // 获取当前用户点赞状态
+        boolean liked = companionLikeService.hasLiked(userId, companionId);
+
+        // 转换为VO
+        AiCompanionVO vo = BeanUtil.copyProperties(companion, AiCompanionVO.class);
+        vo.setLikeCount((int) likeCount);
+        vo.setCommentCount((int) commentCount);
+        vo.setLiked(liked);
+
+        return vo;
+    }
 }