package com.gkhy.exam.institutionalaccess.service.serviceImpl;
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import com.gkhy.exam.institutionalaccess.entity.ThCourse;
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import com.gkhy.exam.institutionalaccess.entity.ThCourseChapter;
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import com.gkhy.exam.institutionalaccess.model.query.ThCourseQuery;
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import com.gkhy.exam.institutionalaccess.model.resp.ThCourseChapterRespDTO;
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import com.gkhy.exam.institutionalaccess.model.resp.ThCourseRespDTO;
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import com.gkhy.exam.institutionalaccess.model.vo.ThCourseChapterVO;
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import com.gkhy.exam.institutionalaccess.model.vo.ThStatisticStudentVO;
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import com.gkhy.exam.institutionalaccess.service.*;
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import org.springframework.beans.BeanUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.util.CollectionUtils;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Collectors;
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@Service("ThCourseManagerService")
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public class ThCourseManagerServiceImpl implements ThCourseManagerService {
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@Autowired
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private ThCourseService courseService;
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@Autowired
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private ThCourseChapterService courseChapterService;
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@Autowired
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private ThStudentCourseService studentCourseService;
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@Override
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public List<ThCourseRespDTO> listByPage(ThCourseQuery query) {
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List<ThCourse> courseList = courseService.listByPage(query);
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//分许获取数据
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List<ThStatisticStudentVO> thStatisticStudentVOS = studentCourseService.statisticByCourseUuid();
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List<ThCourseRespDTO> courseRespDTOList = new ArrayList<>();
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if(!CollectionUtils.isEmpty(courseList)){
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//根据courseids获取所有章节
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List<ThCourseChapterVO> courseChapterVOS = new ArrayList<>();
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List<String> courseUuids = courseList.stream().map(ThCourse::getUuid).collect(Collectors.toList());
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if(!CollectionUtils.isEmpty(courseUuids)){
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courseChapterVOS = courseChapterService.listByCourseUuids(courseUuids);
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}
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for (ThCourse course : courseList) {
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ThCourseRespDTO courseRespDTO = new ThCourseRespDTO();
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BeanUtils.copyProperties(course, courseRespDTO);
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//获取章
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List<ThCourseChapterVO> finalCourseChapterVOS = courseChapterVOS;
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List<ThCourseChapterRespDTO> chapterList = courseChapterVOS
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.stream()
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.filter(cc -> course.getUuid().equals(cc.getCourseUuid()) && cc.getParentUuid().equals("0"))
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.map(cc -> {
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ThCourseChapterRespDTO courseChapterRespDTO = new ThCourseChapterRespDTO();
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BeanUtils.copyProperties(cc, courseChapterRespDTO);
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courseChapterRespDTO.setChildren(getChildren(finalCourseChapterVOS,cc.getUuid()));
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return courseChapterRespDTO;
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})
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.collect(Collectors.toList());
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courseRespDTO.setOutline(chapterList);
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//学员数量
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List<ThStatisticStudentVO> statisticList = thStatisticStudentVOS.stream().filter(s -> s.getCourseUuid().equals(course.getUuid())).collect(Collectors.toList());
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if(statisticList.size()>0){
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ThStatisticStudentVO thStatisticStudentVO = statisticList.get(0);
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courseRespDTO.setStudentCount(thStatisticStudentVO.getCount());
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}else {
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courseRespDTO.setStudentCount(0);
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}
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courseRespDTOList.add(courseRespDTO);
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}
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}
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return courseRespDTOList;
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}
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//获取单条课程
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@Override
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public ThCourseRespDTO findById(Long id) {
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ThCourse thCourse = courseService.getById(id);
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ThCourseRespDTO thCourseRespDTO = new ThCourseRespDTO();
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BeanUtils.copyProperties(thCourse, thCourseRespDTO);
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List<ThCourseChapterVO> thCourseChapterVOS = courseChapterService.listByCourseUuid(thCourse.getUuid());
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List<ThCourseChapterRespDTO> chapterRespDTOS = thCourseChapterVOS.stream()
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.filter(c -> c.getParentUuid().equals("0"))
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.map(c -> {
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ThCourseChapterRespDTO chapterRespDTO = new ThCourseChapterRespDTO();
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BeanUtils.copyProperties(c, chapterRespDTO);
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chapterRespDTO.setChildren(getChildren(thCourseChapterVOS,c.getUuid()));
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return chapterRespDTO;
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}).collect(Collectors.toList());
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thCourseRespDTO.setOutline(chapterRespDTOS);
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return thCourseRespDTO;
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}
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//获取章节
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private List<ThCourseChapterRespDTO> getChildren(List<ThCourseChapterVO> courseChapterVOS, String parentUuid) {
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List<ThCourseChapterRespDTO> chapterList = courseChapterVOS
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.stream()
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.filter(cc -> cc.getParentUuid().equals(parentUuid))
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.map(cc -> {
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ThCourseChapterRespDTO courseChapterRespDTO = new ThCourseChapterRespDTO();
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BeanUtils.copyProperties(cc, courseChapterRespDTO);
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return courseChapterRespDTO;
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})
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.collect(Collectors.toList());
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return chapterList;
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}
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}
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