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.constants.enums.status.DirectionStatus;
import com.qxgmat.data.dao.UserCourseAppointmentMapper;
import com.qxgmat.data.dao.entity.CourseNo;
import com.qxgmat.data.dao.entity.UserCourseAppointment;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.*;

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

    @Resource
    private UserCourseAppointmentMapper userCourseAppointmentMapper;

    public Page<UserCourseAppointment> listAdmin(int page, int size, Integer recordId, Integer userId, Integer courseId, String startTime, String endTime, String order, DirectionStatus direction){
        Example example = new Example(UserCourseAppointment.class);
        if(recordId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("recordId", recordId)
            );
        }
        if (userId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("userId", userId)
            );
        }
        if (courseId != null){
            example.and(
                    example.createCriteria()
                            .andEqualTo("courseId", courseId)
            );
        }
        // 在课程结束前完成预习作业逻辑
        if (startTime != null){
            example.and(
                    example.createCriteria()
                            .andGreaterThanOrEqualTo("endTime", startTime)
            );
        }
        if (endTime != null){
            example.and(
                    example.createCriteria()
                            .andLessThanOrEqualTo("endTime", endTime)
            );
        }
        if(order == null || order.isEmpty()) order = "id";
        switch(direction){
            case ASC:
                example.orderBy(order).asc();
                break;
            case DESC:
            default:
                example.orderBy(order).desc();
        }
        return select(userCourseAppointmentMapper, example, page, size);
    }

    /**
     * 获取课程课时分组列表
     * @param recordIds
     * @return
     */
    public Map<Object, Collection<UserCourseAppointment>> groupByRecordId(Collection recordIds){
        Map<Object, Collection<UserCourseAppointment>> relationMap = new HashMap<>();
        Example example = new Example(UserCourseAppointment.class);
        example.and(
                example.createCriteria()
                        .andIn("recordId", recordIds)
        );
        example.setOrderByClause("recordId asc, no asc");
        List<UserCourseAppointment> nos =  select(userCourseAppointmentMapper, example);
        Collection<UserCourseAppointment> list;
        for(UserCourseAppointment no : nos){
            if (!relationMap.containsKey(no.getRecordId())){
                list = new ArrayList<>();
                relationMap.put(no.getRecordId(), list);
            }else{
                list = relationMap.get(no.getRecordId());
            }
            list.add(no);
        }
        return relationMap;
    }

    public List<UserCourseAppointment> listByRecord(Integer recordId){
        Example example = new Example(UserCourseAppointment.class);
        example.and(
                example.createCriteria()
                .andEqualTo("recordId", recordId)
        );
        return select(userCourseAppointmentMapper, example);
    }

    public UserCourseAppointment addAppointment(UserCourseAppointment appointment){
        List<UserCourseAppointment> list = listByRecord(appointment.getRecordId());
        Integer max = 0;
        for(UserCourseAppointment no:list){
            if (max < no.getNo()) max = no.getNo();
        }
        appointment.setNo(max + 1);
        return add(appointment);
    }

    public Boolean deleteAppointment(Number id){
        UserCourseAppointment in = get(id);
        List<UserCourseAppointment> nos = listByRecord(in.getRecordId());
        for(UserCourseAppointment no : nos){
            if (no.getNo() < in.getNo()){
                continue;
            }
            edit(UserCourseAppointment.builder().id(no.getId()).no(no.getNo() - 1).build());
        }
        return delete(id);
    }

    public UserCourseAppointment add(UserCourseAppointment appointment){
        int result = insert(userCourseAppointmentMapper, appointment);
        appointment = one(userCourseAppointmentMapper, appointment.getId());
        if(appointment == null){
            throw new SystemException("预约添加失败");
        }
        return appointment;
    }

    public UserCourseAppointment edit(UserCourseAppointment appointment){
        UserCourseAppointment in = one(userCourseAppointmentMapper, appointment.getId());
        if(in == null){
            throw new ParameterException("预约不存在");
        }
        int result = update(userCourseAppointmentMapper, appointment);
        return appointment;
    }

    public boolean delete(Number id){
        UserCourseAppointment in = one(userCourseAppointmentMapper, id);
        if(in == null){
            throw new ParameterException("预约不存在");
        }
        int result = delete(userCourseAppointmentMapper, id);
        return result > 0;
    }

    public UserCourseAppointment get(Number id){
        UserCourseAppointment in = one(userCourseAppointmentMapper, id);

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

    public Page<UserCourseAppointment> select(int page, int pageSize){
        return select(userCourseAppointmentMapper, page, pageSize);
    }

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

    public List<UserCourseAppointment> select(Collection ids){
        return select(userCourseAppointmentMapper, ids);
    }

}