package cn.iocoder.yudao.module.system.service.notice;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
import cn.iocoder.yudao.framework.common.exception.ServiceException;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.system.controller.admin.notice.vo.NoticeImportExcelVO;
import cn.iocoder.yudao.module.system.controller.admin.notice.vo.NoticeImportReqVO;
import cn.iocoder.yudao.module.system.controller.admin.notice.vo.NoticeImportRespVO;
import cn.iocoder.yudao.module.system.controller.admin.notice.vo.NoticePageReqVO;
import cn.iocoder.yudao.module.system.controller.admin.notice.vo.NoticeSaveReqVO;
import cn.iocoder.yudao.module.system.dal.dataobject.notice.NoticeDO;
import cn.iocoder.yudao.module.system.dal.mysql.notice.NoticeMapper;
import com.google.common.annotations.VisibleForTesting;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.filterList;
import static cn.iocoder.yudao.module.system.enums.ErrorCodeConstants.*;

/**
 * 通知公告 Service 实现类
 *
 * @author 超级管理员
 */
@Service
public class NoticeServiceImpl implements NoticeService {

    @Resource
    private NoticeMapper noticeMapper;

    @Override
    public Long createNotice(NoticeSaveReqVO createReqVO) {
        NoticeDO notice = BeanUtils.toBean(createReqVO, NoticeDO.class);
        noticeMapper.insert(notice);
        return notice.getId();
    }

    @Override
    public void updateNotice(NoticeSaveReqVO updateReqVO) {
        // 校验是否存在
        validateNoticeExists(updateReqVO.getId());
        // 更新通知公告
        NoticeDO updateObj = BeanUtils.toBean(updateReqVO, NoticeDO.class);
        noticeMapper.updateById(updateObj);
    }

    @Override
    public void deleteNotice(Long id) {
        // 校验是否存在
        validateNoticeExists(id);
        // 删除通知公告
        noticeMapper.deleteById(id);
    }

    @Override
    public void deleteNoticeList(List<Long> ids) {
        noticeMapper.deleteByIds(ids);
    }

    @Override
    public PageResult<NoticeDO> getNoticePage(NoticePageReqVO reqVO) {
        return noticeMapper.selectPage(reqVO);
    }

    @Override
    public NoticeDO getNotice(Long id) {
        return noticeMapper.selectById(id);
    }

    @Override
    public NoticeImportRespVO importNoticeList(List<NoticeImportExcelVO> importNotices, NoticeImportReqVO importReqVO) {
        importNotices = filterList(importNotices, item -> StrUtil.isNotBlank(item.getTitle()));
        if (CollUtil.isEmpty(importNotices)) {
            throw exception(NOTICE_IMPORT_LIST_IS_EMPTY);
        }
        NoticeImportRespVO respVO = NoticeImportRespVO.builder()
                .createNoticeNames(new ArrayList<>())
                .updateNoticeNames(new ArrayList<>())
                .failureNoticeNames(new LinkedHashMap<>())
                .build();
        importNotices.forEach(importNotice -> {
            try {
                // 1. 公告类型必填
                if (importNotice.getType() == null) {
                    throw exception(NOTICE_TYPE_NOT_EXISTS);
                }
                // 2. 判断是否存在（按标题）
                NoticeDO existNotice = noticeMapper.selectByTitle(importNotice.getTitle());
                if (existNotice == null) {
                    // 2.1 新增
                    NoticeDO notice = BeanUtils.toBean(importNotice, NoticeDO.class)
                            .setStatus(ObjUtil.defaultIfNull(importNotice.getStatus(), CommonStatusEnum.ENABLE.getStatus()));
                    noticeMapper.insert(notice);
                    respVO.getCreateNoticeNames().add(importNotice.getTitle());
                    return;
                }
                // 2.2 已存在，判断是否允许更新
                if (!importReqVO.getUpdateSupport()) {
                    respVO.getFailureNoticeNames().put(importNotice.getTitle(),
                            StrUtil.format(NOTICE_TITLE_DUPLICATE.getMsg(), importNotice.getTitle()));
                    return;
                }
                NoticeDO updateNotice = BeanUtils.toBean(importNotice, NoticeDO.class)
                        .setId(existNotice.getId());
                noticeMapper.updateById(updateNotice);
                respVO.getUpdateNoticeNames().add(importNotice.getTitle());
            } catch (ServiceException ex) {
                respVO.getFailureNoticeNames().put(importNotice.getTitle(), ex.getMessage());
            }
        });
        return respVO;
    }

    @VisibleForTesting
    public void validateNoticeExists(Long id) {
        if (id == null) {
            return;
        }
        NoticeDO notice = noticeMapper.selectById(id);
        if (notice == null) {
            throw exception(NOTICE_NOT_FOUND);
        }
    }

}