课程管理

src/main/java/xyz/playedu/api/controller/backend/CourseController.java

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+package xyz.playedu.api.controller.backend;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.collections4.MapUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import xyz.playedu.api.PlayEduBackendThreadLocal;
+import xyz.playedu.api.bus.CourseBus;
+import xyz.playedu.api.constant.BPermissionConstant;
+import xyz.playedu.api.domain.*;
+import xyz.playedu.api.event.CourseDestroyEvent;
+import xyz.playedu.api.middleware.BackendPermissionMiddleware;
+import xyz.playedu.api.request.backend.CourseRequest;
+import xyz.playedu.api.service.CategoryCourseService;
+import xyz.playedu.api.service.CourseCategoryService;
+import xyz.playedu.api.service.CourseDepartmentService;
+import xyz.playedu.api.service.CourseService;
+import xyz.playedu.api.types.JsonResponse;
+import xyz.playedu.api.types.paginate.CoursePaginateFiler;
+import xyz.playedu.api.types.paginate.PaginationResult;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * @Author 杭州白书科技有限公司
+ * @create 2023/2/24 14:16
+ */
+@RestController
+@Slf4j
+@RequestMapping("/backend/v1/course")
+public class CourseController {
+
+    @Autowired
+    private CourseService courseService;
+
+    @Autowired
+    private CourseCategoryService categoryService;//课程分类
+
+    @Autowired
+    private CategoryCourseService categoryCourseService;//课程与分类的关联表
+
+    @Autowired
+    private CourseDepartmentService courseDepartmentService;//课程与部门的关联表
+
+    @Autowired
+    protected CourseBus courseBus;
+
+    @Autowired
+    private ApplicationContext ctx;
+
+    @GetMapping("/index")
+    public JsonResponse index(@RequestParam HashMap<String, Object> params) {
+        Integer page = MapUtils.getInteger(params, "page", 1);
+        Integer size = MapUtils.getInteger(params, "size", 10);
+        String sortField = MapUtils.getString(params, "sort_field", "id");
+        String sortAlgo = MapUtils.getString(params, "sort_algo", "desc");
+        String title = MapUtils.getString(params, "title");
+        String depIds = MapUtils.getString(params, "dep_ids");
+        String categoryIds = MapUtils.getString(params, "category_ids");
+
+        CoursePaginateFiler filter = new CoursePaginateFiler();
+        filter.setTitle(title);
+        filter.setSortField(sortField);
+        filter.setSortAlgo(sortAlgo);
+        if (depIds != null && depIds.length() > 0) {
+            filter.setDepIds(Arrays.stream(depIds.split(",")).map(Integer::valueOf).toArray(Integer[]::new));
+        }
+        if (categoryIds != null && categoryIds.length() > 0) {
+            filter.setCategoryIds(Arrays.stream(categoryIds.split(",")).map(Integer::valueOf).toArray(Integer[]::new));
+        }
+
+        log.info("filter:" + filter);
+
+        PaginationResult<Course> result = courseService.paginate(page, size, filter);
+        return JsonResponse.data(result);
+    }
+
+    @BackendPermissionMiddleware(slug = BPermissionConstant.COURSE)
+    @GetMapping("/create")
+    public JsonResponse create() {
+        Map<Integer, List<CourseCategory>> categories = categoryService.all().stream().collect(Collectors.groupingBy(CourseCategory::getParentId));
+        HashMap<String, Object> data = new HashMap<>();
+        data.put("categories", categories);
+        return JsonResponse.data(data);
+    }
+
+    @BackendPermissionMiddleware(slug = BPermissionConstant.COURSE)
+    @PostMapping("/create")
+    @Transactional
+    public JsonResponse store(@RequestBody @Validated CourseRequest request) {
+        Course course = new Course();
+        course.setTitle(request.getTitle());
+        course.setThumb(request.getThumb());
+        course.setIsShow(request.getIsShow());
+        course.setCreatedAt(new Date());
+        course.setUpdatedAt(new Date());
+
+        courseService.save(course);
+
+        courseBus.departmentRelate(course, request.getDepIds());
+        courseBus.categoryRelate(course, request.getCategoryIds());
+
+        return JsonResponse.success();
+    }
+
+    @BackendPermissionMiddleware(slug = BPermissionConstant.COURSE)
+    @GetMapping("/{id}")
+    public JsonResponse edit(@PathVariable(name = "id") Integer id) {
+        Course course = courseService.getById(id);
+        if (course == null) {
+            return JsonResponse.error("课程不存在");
+        }
+        List<Integer> depIds = courseDepartmentService.getDepIdsByCourseId(course.getId());
+        List<Integer> categoryIds = categoryCourseService.getDepIdsByCourseId(course.getId());
+
+        HashMap<String, Object> data = new HashMap<>();
+        data.put("course", course);
+        data.put("dep_ids", depIds);
+        data.put("category_ids", categoryIds);
+
+        return JsonResponse.data(data);
+    }
+
+    @BackendPermissionMiddleware(slug = BPermissionConstant.COURSE)
+    @PutMapping("/{id}")
+    @Transactional
+    public JsonResponse update(@PathVariable(name = "id") Integer id, @RequestBody @Validated CourseRequest request) {
+        Course course = courseService.getById(id);
+        if (course == null) {
+            return JsonResponse.error("课程不存在");
+        }
+
+        Course newCourse = new Course();
+        newCourse.setId(course.getId());
+
+        if (!course.getTitle().equals(request.getTitle())) {
+            newCourse.setTitle(request.getTitle());
+        }
+        if (!course.getThumb().equals(request.getThumb())) {
+            newCourse.setThumb(request.getThumb());
+        }
+        if (!course.getIsShow().equals(request.getIsShow())) {
+            newCourse.setIsShow(request.getIsShow());
+        }
+        courseService.updateById(newCourse);
+
+        // 清空depIds
+        courseBus.resetDepartmentRelate(newCourse, request.getDepIds());
+        // 清空categoryIds
+        courseBus.resetCategoryRelate(newCourse, request.getCategoryIds());
+
+        return JsonResponse.success();
+    }
+
+    @BackendPermissionMiddleware(slug = BPermissionConstant.COURSE)
+    @DeleteMapping("/{id}")
+    public JsonResponse destroy(@PathVariable(name = "id") Integer id) {
+        courseService.removeById(id);
+        ctx.publishEvent(new CourseDestroyEvent(this, PlayEduBackendThreadLocal.getAdminUserID(), id, new Date()));
+        return JsonResponse.success();
+    }
+
+}