课程代码优化

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

@@ -13,7 +13,7 @@ import java.util.List;
 public interface CategoryCourseService extends IService<CategoryCourse> {
     List<Integer> getCourseIdsByCategoryIds(Integer[] categoryIds);
 
-    List<Integer> getDepIdsByCourseId(Integer id);
+    List<Integer> getCategoryIdsByCourseId(Integer id);
 
     void removeByCourseId(Integer courseId);
 }

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

@@ -2,16 +2,36 @@ package xyz.playedu.api.service;
 
 import xyz.playedu.api.domain.Course;
 import com.baomidou.mybatisplus.extension.service.IService;
+import xyz.playedu.api.exception.NotFoundException;
 import xyz.playedu.api.types.paginate.CoursePaginateFiler;
 import xyz.playedu.api.types.paginate.PaginationResult;
 
+import java.util.List;
+
 /**
-* @author tengteng
-* @description 针对表【courses】的数据库操作Service
-* @createDate 2023-02-24 14:14:01
-*/
+ * @author tengteng
+ * @description 针对表【courses】的数据库操作Service
+ * @createDate 2023-02-24 14:14:01
+ */
 public interface CourseService extends IService<Course> {
 
     PaginationResult<Course> paginate(int page, int size, CoursePaginateFiler filter);
 
+    void createWithCategoryIdsAndDepIds(String title, String thumb, Integer isShow, Integer[] categoryIds, Integer[] depIds);
+
+    void updateWithCategoryIdsAndDepIds(Course course, String title, String thumb, Integer isShow, Integer[] categoryIds, Integer[] depIds);
+
+    void relateDepartments(Course course, Integer[] depIds);
+
+    void resetRelateDepartments(Course course, Integer[] depIds);
+
+    void relateCategories(Course course, Integer[] categoryIds);
+
+    void resetRelateCategories(Course course, Integer[] categoryIds);
+
+    Course findOrFail(Integer id) throws NotFoundException;
+
+    List<Integer> getDepIdsByCourseId(Integer courseId);
+
+    List<Integer> getCategoryIdsByCourseId(Integer courseId);
 }

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

@@ -31,7 +31,7 @@ public class CategoryCourseServiceImpl extends ServiceImpl<CategoryCourseMapper,
     }
 
     @Override
-    public List<Integer> getDepIdsByCourseId(Integer id) {
+    public List<Integer> getCategoryIdsByCourseId(Integer id) {
         List<Integer> ids = new ArrayList<>();
         List<CategoryCourse> categoryCourses = list(query().getWrapper().eq("course_id", id));
         if (categoryCourses.size() == 0) {

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

@@ -5,7 +5,11 @@ import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.transaction.annotation.Transactional;
+import xyz.playedu.api.domain.CategoryCourse;
 import xyz.playedu.api.domain.Course;
+import xyz.playedu.api.domain.CourseDepartment;
+import xyz.playedu.api.exception.NotFoundException;
 import xyz.playedu.api.service.CategoryCourseService;
 import xyz.playedu.api.service.CourseDepartmentService;
 import xyz.playedu.api.service.CourseService;
@@ -15,6 +19,8 @@ import xyz.playedu.api.types.paginate.CoursePaginateFiler;
 import xyz.playedu.api.types.paginate.PaginationResult;
 import xyz.playedu.api.util.HelperUtil;
 
+import java.util.ArrayList;
+import java.util.Date;
 import java.util.List;
 
 /**
@@ -70,6 +76,105 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course> impleme
 
         return pageResult;
     }
+
+    @Override
+    @Transactional
+    public void createWithCategoryIdsAndDepIds(String title, String thumb, Integer isShow, Integer[] categoryIds, Integer[] depIds) {
+        Course course = new Course();
+        course.setTitle(title);
+        course.setThumb(thumb);
+        course.setIsShow(isShow);
+        course.setCreatedAt(new Date());
+        course.setUpdatedAt(new Date());
+
+        save(course);
+
+        relateCategories(course, categoryIds);
+        relateDepartments(course, depIds);
+    }
+
+    @Override
+    public void relateDepartments(Course course, Integer[] depIds) {
+        if (depIds == null || depIds.length == 0) {
+            return;
+        }
+        List<CourseDepartment> courseDepartments = new ArrayList<>();
+        for (int i = 0; i < depIds.length; i++) {
+            CourseDepartment courseDepartment = new CourseDepartment();
+            courseDepartment.setCourseId(course.getId());
+            courseDepartment.setDepId(depIds[i]);
+            courseDepartments.add(courseDepartment);
+        }
+        courseDepartmentService.saveBatch(courseDepartments);
+    }
+
+    @Override
+    public void resetRelateDepartments(Course course, Integer[] depIds) {
+        courseDepartmentService.removeByCourseId(course.getId());
+        relateDepartments(course, depIds);
+    }
+
+    @Override
+    public void relateCategories(Course course, Integer[] categoryIds) {
+        if (categoryIds == null || categoryIds.length == 0) {
+            return;
+        }
+        List<CategoryCourse> categoryCourses = new ArrayList<>();
+        for (int i = 0; i < categoryIds.length; i++) {
+            CategoryCourse categoryCourse = new CategoryCourse();
+            categoryCourse.setCourseId(course.getId());
+            categoryCourse.setCategoryId(categoryIds[i]);
+            categoryCourses.add(categoryCourse);
+        }
+        categoryCourseService.saveBatch(categoryCourses);
+    }
+
+    @Override
+    public void resetRelateCategories(Course course, Integer[] categoryIds) {
+        categoryCourseService.removeByCourseId(course.getId());
+        relateCategories(course, categoryIds);
+    }
+
+    @Override
+    @Transactional
+    public void updateWithCategoryIdsAndDepIds(Course course, String title, String thumb, Integer isShow, Integer[] categoryIds, Integer[] depIds) {
+        Course newCourse = new Course();
+        newCourse.setId(course.getId());
+
+        if (!course.getTitle().equals(title)) {
+            newCourse.setTitle(title);
+        }
+        if (!course.getThumb().equals(thumb)) {
+            newCourse.setThumb(thumb);
+        }
+        if (!course.getIsShow().equals(isShow)) {
+            newCourse.setIsShow(isShow);
+        }
+
+        updateById(newCourse);
+
+        resetRelateCategories(newCourse, categoryIds);
+        resetRelateDepartments(newCourse, depIds);
+    }
+
+    @Override
+    public Course findOrFail(Integer id) throws NotFoundException {
+        Course course = getOne(query().getWrapper().eq("id", id));
+        if (course == null) {
+            throw new NotFoundException("课程不存在");
+        }
+        return course;
+    }
+
+    @Override
+    public List<Integer> getDepIdsByCourseId(Integer courseId) {
+        return courseDepartmentService.getDepIdsByCourseId(courseId);
+    }
+
+    @Override
+    public List<Integer> getCategoryIdsByCourseId(Integer courseId) {
+        return categoryCourseService.getCategoryIdsByCourseId(courseId);
+    }
 }