课时管理

src/main/java/xyz/playedu/api/service/CourseHourService.java

@@ -0,0 +1,29 @@
+package xyz.playedu.api.service;
+
+import xyz.playedu.api.domain.CourseHour;
+import com.baomidou.mybatisplus.extension.service.IService;
+import xyz.playedu.api.exception.NotFoundException;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @author tengteng
+ * @description 针对表【course_hour】的数据库操作Service
+ * @createDate 2023-02-26 17:48:12
+ */
+public interface CourseHourService extends IService<CourseHour> {
+
+    List<CourseHour> getHoursByCourseId(Integer courseId);
+
+    CourseHour create(Integer courseId, Integer chapterId, String title, String type, Integer duration, Date publishedAt);
+
+    void update(CourseHour courseHour, Integer chapterId, String title, Integer duration, Date publishedAt);
+
+    CourseHour findOrFail(Integer id) throws NotFoundException;
+
+    CourseHour findOrFail(Integer id, Integer courseId) throws NotFoundException;
+
+    Integer getCourseClassHourByCourseId(Integer courseId);
+
+}

src/main/java/xyz/playedu/api/service/CourseService.java

@@ -34,4 +34,6 @@ public interface CourseService extends IService<Course> {
     List<Integer> getDepIdsByCourseId(Integer courseId);
 
     List<Integer> getCategoryIdsByCourseId(Integer courseId);
+
+    void updateClassHour(Integer courseId, Integer classHour);
 }

src/main/java/xyz/playedu/api/service/impl/CourseHourServiceImpl.java

@@ -0,0 +1,83 @@
+package xyz.playedu.api.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import xyz.playedu.api.domain.CourseHour;
+import xyz.playedu.api.exception.NotFoundException;
+import xyz.playedu.api.service.CourseHourService;
+import xyz.playedu.api.mapper.CourseHourMapper;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @author tengteng
+ * @description 针对表【course_hour】的数据库操作Service实现
+ * @createDate 2023-02-26 17:48:12
+ */
+@Service
+public class CourseHourServiceImpl extends ServiceImpl<CourseHourMapper, CourseHour> implements CourseHourService {
+
+    @Override
+    public List<CourseHour> getHoursByCourseId(Integer courseId) {
+        return list(query().getWrapper().eq("course_id", courseId).orderByAsc("published_at"));
+    }
+
+    @Override
+    public CourseHour create(Integer courseId, Integer chapterId, String title, String type, Integer duration, Date publishedAt) {
+        CourseHour courseHour = new CourseHour();
+        courseHour.setCourseId(courseId);
+        courseHour.setChapterId(chapterId);
+        courseHour.setTitle(title);
+        courseHour.setType(type);
+        courseHour.setDuration(duration);
+        courseHour.setPublishedAt(publishedAt);
+        courseHour.setCreatedAt(new Date());
+        courseHour.setUpdatedAt(new Date());
+
+        save(courseHour);
+
+        return courseHour;
+    }
+
+    @Override
+    public void update(CourseHour courseHour, Integer chapterId, String title, Integer duration, Date publishedAt) {
+        CourseHour newCourseHour = new CourseHour();
+        newCourseHour.setId(courseHour.getId());
+        newCourseHour.setChapterId(chapterId);
+        newCourseHour.setTitle(title);
+        newCourseHour.setDuration(duration);
+        newCourseHour.setPublishedAt(publishedAt);
+        newCourseHour.setCreatedAt(new Date());
+        newCourseHour.setUpdatedAt(new Date());
+
+        updateById(newCourseHour);
+    }
+
+    @Override
+    public CourseHour findOrFail(Integer id) throws NotFoundException {
+        CourseHour courseHour = getOne(query().getWrapper().eq("id", id));
+        if (courseHour == null) {
+            throw new NotFoundException("课时不存在");
+        }
+        return courseHour;
+    }
+
+    @Override
+    public CourseHour findOrFail(Integer id, Integer courseId) throws NotFoundException {
+        CourseHour courseHour = getOne(query().getWrapper().eq("id", id).eq("course_id", courseId));
+        if (courseHour == null) {
+            throw new NotFoundException("课时不存在");
+        }
+        return courseHour;
+    }
+
+    @Override
+    public Integer getCourseClassHourByCourseId(Integer courseId) {
+        return Math.toIntExact(count(query().getWrapper().eq("course_id", courseId)));
+    }
+}
+
+
+
+

src/main/java/xyz/playedu/api/service/impl/CourseServiceImpl.java

@@ -175,6 +175,14 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
     public List<Integer> getCategoryIdsByCourseId(Integer courseId) {
         return categoryCourseService.getCategoryIdsByCourseId(courseId);
     }
+
+    @Override
+    public void updateClassHour(Integer courseId, Integer classHour) {
+        Course course = new Course();
+        course.setId(courseId);
+        course.setClassHour(classHour);
+        updateById(course);
+    }
 }