refactor(service): 优化推荐逻辑不再排除已购买主题

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

@@ -118,22 +118,13 @@ public class KeyboardThemesServiceImpl extends ServiceImpl<KeyboardThemesMapper,
     @Override
     /*
       获取推荐主题列表
-      <p>推荐规则：根据真实下载量降序排序，排除用户已购买的主题和当前查看的主题，最多返回8个主题</p>
+      <p>推荐规则：根据真实下载量降序排序，排除当前查看的主题，最多返回8个主题</p>
 
       @param userId 用户ID
       @param themeId 当前主题ID，需要从推荐列表中排除
-     * @return 推荐主题列表，包含主题详情和购买状态（推荐列表中的主题购买状态均为未购买）
+     * @return 推荐主题列表，包含主题详情和购买状态
      */
     public List<KeyboardThemesRespVO> getRecommendedThemes(Long userId, Long themeId) {
-        // 查询用户已购买的主题ID集合
-        Set<Long> purchasedThemeIds = purchaseService.lambdaQuery()
-                .eq(KeyboardThemePurchase::getUserId, userId)
-                .eq(KeyboardThemePurchase::getPayStatus, (short) 1)
-                .list()
-                .stream()
-                .map(KeyboardThemePurchase::getThemeId)
-                .collect(Collectors.toSet());
-
         // 构建查询器
         LambdaQueryChainWrapper<KeyboardThemes> queryWrapper = this.lambdaQuery()
                 .eq(KeyboardThemes::getDeleted, false)
@@ -145,21 +136,25 @@ public class KeyboardThemesServiceImpl extends ServiceImpl<KeyboardThemesMapper,
             queryWrapper.ne(KeyboardThemes::getId, themeId);
         }
 
-        // 如果有已购买的主题，排除它们
-        if (!purchasedThemeIds.isEmpty()) {
-            queryWrapper.notIn(KeyboardThemes::getId, purchasedThemeIds);
-        }
-
         // 查询推荐主题列表，限制8条
         List<KeyboardThemes> themesList = queryWrapper.list();
 
-        // 只取前8条数据
+        // 查询用户已购买的主题ID集合
+        Set<Long> purchasedThemeIds = purchaseService.lambdaQuery()
+                .eq(KeyboardThemePurchase::getUserId, userId)
+                .eq(KeyboardThemePurchase::getPayStatus, (short) 1)
+                .list()
+                .stream()
+                .map(KeyboardThemePurchase::getThemeId)
+                .collect(Collectors.toSet());
+
+        // 只取前8条数据并设置购买状态
         return themesList.stream()
                 .limit(8)
                 .map(theme -> {
                     KeyboardThemesRespVO vo = BeanUtil.copyProperties(theme, KeyboardThemesRespVO.class);
-                    // 推荐列表中的主题均为未购买状态
-                    vo.setIsPurchased(false);
+                    // 设置主题的实际购买状态
+                    vo.setIsPurchased(purchasedThemeIds.contains(theme.getId()));
                     return vo;
                 }).collect(Collectors.toList());
     }