package com.monkeylessey.service.impl;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.monkeylessey.domain.entity.Session;
import com.monkeylessey.domain.form.SessionForm;
import com.monkeylessey.domain.query.SessionQuery;
import com.monkeylessey.domain.vo.SessionCountVO;
import com.monkeylessey.domain.vo.SessionVO;
import com.monkeylessey.mapper.SessionMapper;
import com.monkeylessey.service.SessionService;
import com.monkeylessey.response.Result;
import com.monkeylessey.utils.DateUtil;
import com.monkeylessey.utils.PageUtil;
import org.springframework.stereotype.Service;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.BeanUtils;
import org.springframework.util.Assert;

import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

/**
 * chat对话 服务实现类
 *
 * @author 向培
 * @since 2025-04-18
 */
@Service
@RequiredArgsConstructor
public class SessionServiceImpl extends ServiceImpl<SessionMapper, Session> implements SessionService {

    private final SessionMapper sessionMapper;

    /**
     * 添加
     * @param form
     * @return
     */
    @Override
    public Result add(SessionForm form) {
        Session entity = SessionForm.getEntityByForm(form, null);
        baseMapper.insert(entity);
        return Result.ok("添加成功");
    }

    /**
     * 修改
     * @param form
     * @return
     */
    @Override
    public Result update(SessionForm form) {
        Session entity = baseMapper.selectById(form.getId());

        // 为空抛IllegalArgumentException，做全局异常处理
        Assert.notNull(entity, "记录不存在");
        BeanUtils.copyProperties(form, entity);
        baseMapper.updateById(entity);
        return Result.ok("修改成功");
    }

    /**
     * 批量删除
     * @param ids
     * @return
     */
    @Override
    public Result remove(List<String> ids) {
        baseMapper.deleteBatchIds(ids);
        return Result.ok("删除成功");
    }

    /**
     * id删除
     * @param id
     * @return
     */
    @Override
    public Result removeById(String id) {
        baseMapper.deleteById(id);
        return Result.ok("删除成功");
    }

    /**
     * 分页查询
     * @param query
     * @return
     */
    @Override
    public Result page(SessionQuery query) {
        IPage<SessionVO> page = PageUtil.getPage(query, SessionVO.class);
        baseMapper.getPage(page, query);
        return Result.ok().data(page.getRecords()).total(page.getTotal());
    }

    /**
     * 根据id查找
     * @param id
     * @return
     */
    @Override
    public Result detail(Integer id) {
        SessionVO vo = baseMapper.getById(id);
        Assert.notNull(vo, "记录不存在");
        return Result.ok().data(vo);
    }

    /**
     * 列表
     * @return
     */
    @Override
    public Result all() {
        List<Session> entities = baseMapper.selectList(null);
        List<SessionVO> vos = entities.stream()
                .map(entity -> SessionVO.getVoByEntity(entity, null))
                .collect(Collectors.toList());
        return Result.ok().data(vos);
    }


    @Override
    public Result clientList() {
        Date now = new Date();
        // TODO，userId查询
        // 今天
        List<SessionVO> todaySession = baseMapper.getTodaySessionList(DateUtil.getDayStart(now), DateUtil.getDayEnd(now));
        // 昨天
        Calendar instance = Calendar.getInstance();
        instance.setTime(now);
        instance.add(Calendar.DATE, -1);
        Date yesterday = instance.getTime();
        List<SessionVO> yesterdaySession = baseMapper.getYesterdaySessionList(DateUtil.getDayStart(yesterday), DateUtil.getDayEnd(yesterday));
        // 更早
        List<SessionVO> oldSession = baseMapper.getOldSessionList(DateUtil.getDayStart(yesterday));

        SessionCountVO vo = new SessionCountVO();
        vo.setToday(todaySession);
        vo.setYesterday(yesterdaySession);
        vo.setOld(oldSession);
        return Result.ok().data(vo);
    }
}