feat(themes): 为主题列表接口增加用户购买状态标记

在 KeyboardThemesRespVO 中新增 isPurchased 字段；
selectThemesByStyle 方法增加 userId 参数并查询用户已购主题 ID，
返回结果标记当前用户是否已购买。

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

@@ -42,8 +42,8 @@ public class ThemesController {
     @GetMapping("/listByStyle")
     @Operation(summary = "按风格查询主题", description = "按主题风格查询主题列表接口")
     public BaseResponse<List<KeyboardThemesRespVO>> listByStyle(@RequestParam("themeStyle") Long themeStyleId) {
-        return ResultUtils.success(themesService.selectThemesByStyle(themeStyleId));
-    }
+        Long userId = StpUtil.getLoginIdAsLong();
+        return ResultUtils.success(themesService.selectThemesByStyle(themeStyleId,userId));}
 
     @GetMapping("/listAllStyles")
     @Operation(summary = "查询所有主题风格", description = "查询所有主题风格列表接口")

src/main/java/com/yolo/keyborad/model/vo/themes/KeyboardThemesRespVO.java

@@ -67,4 +67,7 @@ public class KeyboardThemesRespVO {
 
     @Schema(description = "是否免费")
     private Boolean isFree;
+
+    @Schema(description = "当前用户是否已购买")
+    private Boolean isPurchased;
 }

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

@@ -12,11 +12,13 @@ import java.util.List;
     
 public interface KeyboardThemesService extends IService<KeyboardThemes>{
 
+
     /**
-     * 按主题风格查询主题列表(未删除且上架)
+     * 按主题风格查询主题列表(未删除且上架)，包含用户购买状态
      * @param themeStyle 主题风格
+     * @param userId 用户ID
      * @return 主题列表
      */
-    List<KeyboardThemesRespVO> selectThemesByStyle(Long themeStyle);
+    List<KeyboardThemesRespVO> selectThemesByStyle(Long themeStyle, Long userId);
 
 }

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

@@ -1,9 +1,15 @@
 package com.yolo.keyborad.service.impl;
 
 import cn.hutool.core.bean.BeanUtil;
+import com.yolo.keyborad.model.entity.KeyboardThemePurchase;
+import com.yolo.keyborad.service.KeyboardThemePurchaseService;
+import jakarta.annotation.Resource;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.yolo.keyborad.mapper.KeyboardThemesMapper;
 import com.yolo.keyborad.model.entity.KeyboardThemes;
@@ -17,21 +23,39 @@ import com.yolo.keyborad.service.KeyboardThemesService;
 @Service
 public class KeyboardThemesServiceImpl extends ServiceImpl<KeyboardThemesMapper, KeyboardThemes> implements KeyboardThemesService {
 
+    @Resource
+    @Lazy  // 延迟加载，打破循环依赖
+    private KeyboardThemePurchaseService purchaseService;
 
     @Override
-    public List<KeyboardThemesRespVO> selectThemesByStyle(Long themeStyle) {
+    public List<KeyboardThemesRespVO> selectThemesByStyle(Long themeStyle, Long userId) {
+        List<KeyboardThemes> themesList;
         if (themeStyle == 9999) {
-            List<KeyboardThemes> themesList = this.lambdaQuery()
+            themesList = this.lambdaQuery()
                     .eq(KeyboardThemes::getDeleted, false)
                     .eq(KeyboardThemes::getThemeStatus, true)
+                    .orderByAsc(KeyboardThemes::getSort)
+                    .list();
+        } else {
+            themesList = this.lambdaQuery()
+                    .eq(KeyboardThemes::getDeleted, false)
+                    .eq(KeyboardThemes::getThemeStatus, true)
+                    .eq(KeyboardThemes::getThemeStyle, themeStyle)
                     .list();
-            return BeanUtil.copyToList(themesList, KeyboardThemesRespVO.class);
         }
-        List<KeyboardThemes> themesList = this.lambdaQuery()
-                .eq(KeyboardThemes::getDeleted, false)
-                .eq(KeyboardThemes::getThemeStatus, true)
-                .eq(KeyboardThemes::getThemeStyle, themeStyle)
-                .list();
-        return BeanUtil.copyToList(themesList, KeyboardThemesRespVO.class);
+
+        Set<Long> purchasedThemeIds = purchaseService.lambdaQuery()
+                .eq(KeyboardThemePurchase::getUserId, userId)
+                .eq(KeyboardThemePurchase::getPayStatus, (short) 1)
+                .list()
+                .stream()
+                .map(KeyboardThemePurchase::getThemeId)
+                .collect(Collectors.toSet());
+
+        return themesList.stream().map(theme -> {
+            KeyboardThemesRespVO vo = BeanUtil.copyProperties(theme, KeyboardThemesRespVO.class);
+            vo.setIsPurchased(purchasedThemeIds.contains(theme.getId()));
+            return vo;
+        }).collect(Collectors.toList());
     }
 }