feat：增加获取课程下一章节详情接口

src/main/java/com/peanut/modules/sociology/controller/CourseController.java

@@ -148,6 +148,17 @@ public class CourseController {
         return R.ok().put("data",chapterDetail);
     }
 
+    /**
+     * 获取下一章节详情
+     * @param param
+     * @return
+     */
+    @RequestMapping("/getNextCourseCatalogueChapter")
+    public R getNextCourseCatalogueChapter(@RequestBody ParamTo param){
+        Map<String, Object> chapterDetail = courseCatalogueChapterService.getNextChapterDetail(param.getId());
+        return R.ok().put("data",chapterDetail);
+    }
+
     /**
      * 开通免费课程
      * @param map

src/main/java/com/peanut/modules/sociology/service/CourseCatalogueChapterService.java

@@ -10,4 +10,5 @@ public interface CourseCatalogueChapterService extends IService<CourseCatalogueC
     List<CourseCatalogueChapterEntity> getCourseCatalogueChapterList(int id);
 
     Map<String,Object> getChapterDetail(Integer chapterId);
+    Map<String, Object> getNextChapterDetail(Integer chapterId);
 }

src/main/java/com/peanut/modules/sociology/service/impl/CourseCatalogueChapterServiceImpl.java

@@ -83,6 +83,23 @@ public class CourseCatalogueChapterServiceImpl extends ServiceImpl<CourseCatalog
         return flag;
     }
 
+    @Override
+    public Map<String, Object> getNextChapterDetail(Integer chapterId) {
+        CourseCatalogueChapterEntity currentChapter = this.getById(chapterId);
+        if (currentChapter==null) return null;
+
+        CourseCatalogueChapterEntity nextChapter = this.getOne(
+                new LambdaQueryWrapper<CourseCatalogueChapterEntity>()
+                    .eq(CourseCatalogueChapterEntity::getCatalogueId, currentChapter.getCatalogueId())
+                        .gt(CourseCatalogueChapterEntity::getSort, currentChapter.getSort() )
+                        .orderByAsc(CourseCatalogueChapterEntity::getSort)
+                        .last("limit 1")
+        );
+        if (nextChapter==null) return null;
+
+        return getChapterDetail(nextChapter.getId());
+    }
+
 
     private int getCurrentVideo(Integer chapterId){
         MPJLambdaWrapper<CourseCatalogueChapterVideoEntity> wrapper = new MPJLambdaWrapper<>();