refactor(service): 优化推荐逻辑不再排除已购买主题

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

@@ -85,9 +85,9 @@ public class ThemesController {
 
     @GetMapping("/recommended")
     @Operation(summary = "推荐主题列表", description = "按真实下载数量降序返回推荐主题")
-    public BaseResponse<List<KeyboardThemesRespVO>> getRecommendedThemes() {
+    public BaseResponse<List<KeyboardThemesRespVO>> getRecommendedThemes(@RequestParam(required = false) Long themeId) {
         Long userId = StpUtil.getLoginIdAsLong();
-        List<KeyboardThemesRespVO> result = themesService.getRecommendedThemes(userId);
+        List<KeyboardThemesRespVO> result = themesService.getRecommendedThemes(userId, themeId);
         return ResultUtils.success(result);
     }
 

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

@@ -34,7 +34,7 @@ public interface KeyboardThemesService extends IService<KeyboardThemes>{
      * @param userId 用户ID
      * @return 推荐主题列表
      */
-    List<KeyboardThemesRespVO> getRecommendedThemes(Long userId);
+    List<KeyboardThemesRespVO> getRecommendedThemes(Long userId,Long themeId);
 
     /**
      * 根据主题名称模糊搜索主题

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

@@ -118,12 +118,27 @@ 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，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
-     * @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）
+      @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
      */
-    public List<KeyboardThemesRespVO> getRecommendedThemes(Long userId) {
+    public List<KeyboardThemesRespVO> getRecommendedThemes(Long userId, Long themeId) {
+        // 构建查询器
+        LambdaQueryChainWrapper<KeyboardThemes> queryWrapper = this.lambdaQuery()
+                .eq(KeyboardThemes::getDeleted, false)
+                .eq(KeyboardThemes::getThemeStatus, true)
+                .orderByDesc(KeyboardThemes::getRealDownloadCount);
+
+        // 排除传入的当前主题ID
+        if (themeId != null) {
+            queryWrapper.ne(KeyboardThemes::getId, themeId);
+        }
+
+        // 查询推荐主题列表，限制8条
+        List<KeyboardThemes> themesList = queryWrapper.list();
+
         // 查询用户已购买的主题ID集合
         Set<Long> purchasedThemeIds = purchaseService.lambdaQuery()
                 .eq(KeyboardThemePurchase::getUserId, userId)
@@ -133,27 +148,13 @@ public class KeyboardThemesServiceImpl extends ServiceImpl<KeyboardThemesMapper,
                 .map(KeyboardThemePurchase::getThemeId)
                 .collect(Collectors.toSet());
 
-        // 构建查询器
+        // 只取前8条数据并设置购买状态
-        LambdaQueryChainWrapper<KeyboardThemes> queryWrapper = this.lambdaQuery()
-                .eq(KeyboardThemes::getDeleted, false)
-                .eq(KeyboardThemes::getThemeStatus, true)
-                .orderByDesc(KeyboardThemes::getRealDownloadCount);
-
-        // 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
         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
+                    // 设置主题的实际购买状态
-                    vo.setIsPurchased(false);
+                    vo.setIsPurchased(purchasedThemeIds.contains(theme.getId()));
                     return vo;
                 }).collect(Collectors.toList());
     }