sourcecode/server/gateway-api/src/main/java/com/qxgmat/service/inline/CourseStudentOnlineService.java

package com.qxgmat.service.inline;

import com.github.pagehelper.Page;
import com.nuliji.tools.AbstractService;
import com.nuliji.tools.exception.ParameterException;
import com.nuliji.tools.exception.SystemException;
import com.nuliji.tools.mybatis.Example;
import com.qxgmat.data.dao.CourseStudentOnlineMapper;
import com.qxgmat.data.dao.entity.CourseStudentOnline;
import com.qxgmat.data.dao.entity.CourseTime;
import com.qxgmat.data.relation.CourseStudentOnlineRelationMapper;
import com.qxgmat.data.relation.entity.CourseStudentNumberRelation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Collection;
import java.util.List;
import java.util.Map;

@Service
public class CourseStudentOnlineService extends AbstractService {
    private static final Logger logger = LoggerFactory.getLogger(CourseStudentOnlineService.class);

    @Resource
    private CourseStudentOnlineMapper courseStudentOnlineMapper;

    @Resource
    private CourseStudentOnlineRelationMapper courseStudentOnlineRelationMapper;

    public Page<CourseStudentOnline> listAdmin(int page, int size, Integer courseId, Integer timeId){
        Example example = new Example(CourseStudentOnline.class);
        if(courseId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("courseId", courseId)
            );
        }
        if(timeId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("timeId", timeId)
            );
        }
        return select(courseStudentOnlineMapper, example, page, size);
    }

    public List<CourseStudentNumberRelation> groupByCourse(Collection ids){
        return courseStudentOnlineRelationMapper.groupByTime(ids);
    }

    public CourseStudentOnline getByUserAndTime(Integer userId, Integer timeId){
        Example example = new Example(CourseStudentOnline.class);
        example.and(
                example.createCriteria()
                .andEqualTo("userId", userId)
                .andEqualTo("timeId", timeId)
        );
        return one(courseStudentOnlineMapper, example);
    }

    public CourseStudentOnline addStudent(CourseStudentOnline course){
        CourseStudentOnline in = getByUserAndTime(course.getUserId(), course.getTimeId());
        if(in != null){
            throw new ParameterException("已添加");
        }
        return add(course);
    }

    public CourseStudentOnline add(CourseStudentOnline course){
        int result = insert(courseStudentOnlineMapper, course);
        course = one(courseStudentOnlineMapper, course.getId());
        if(course == null){
            throw new SystemException("课时添加失败");
        }
        return course;
    }

    public CourseStudentOnline edit(CourseStudentOnline course){
        CourseStudentOnline in = one(courseStudentOnlineMapper, course.getId());
        if(in == null){
            throw new ParameterException("课时不存在");
        }
        int result = update(courseStudentOnlineMapper, course);
        return course;
    }

    public boolean delete(Number id){
        CourseStudentOnline in = one(courseStudentOnlineMapper, id);
        if(in == null){
            throw new ParameterException("课时不存在");
        }
        int result = delete(courseStudentOnlineMapper, id);
        return result > 0;
    }

    public CourseStudentOnline get(Number id){
        CourseStudentOnline in = one(courseStudentOnlineMapper, id);

        if(in == null){
            throw new ParameterException("课时不存在");
        }
        return in;
    }

    public Page<CourseStudentOnline> select(int page, int pageSize){
        return select(courseStudentOnlineMapper, page, pageSize);
    }

    public Page<CourseStudentOnline> select(Integer[] ids){
        return page(()->select(courseStudentOnlineMapper, ids), 1, ids.length);
    }

    public List<CourseStudentOnline> select(Collection ids){
        return select(courseStudentOnlineMapper, ids);
    }

}