package com.doumee.service.business.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.doumee.biz.system.SystemDictDataBiz;
import com.doumee.core.constants.Constants;
import com.doumee.core.constants.ResponseStatus;
import com.doumee.core.exception.BusinessException;
import com.doumee.core.model.LoginUserInfo;
import com.doumee.core.model.PageData;
import com.doumee.core.model.PageWrap;
import com.doumee.core.utils.Utils;
import com.doumee.dao.business.BannerMapper;
import com.doumee.dao.business.model.Banner;
import com.doumee.service.business.BannerService;
import org.apache.commons.lang3.StringUtils;
import org.apache.shiro.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.util.Date;
import java.util.List;
import java.util.Objects;

/**
 * 轮播图Service实现
 * @author rk
 * @date 2026/04/08
 */
@Service
public class BannerServiceImpl implements BannerService {

    @Autowired
    private BannerMapper bannerMapper;

    @Autowired
    private SystemDictDataBiz systemDictDataBiz;

    @Override
    @Transactional(rollbackFor = {Exception.class, BusinessException.class})
    public Integer create(Banner banner) {
        validateBanner(banner, false);
        LoginUserInfo loginUserInfo = (LoginUserInfo) SecurityUtils.getSubject().getPrincipal();
        banner.setDeleted(Constants.ZERO);
        banner.setCreateTime(new Date());
        banner.setCreateUser(loginUserInfo.getId());
        banner.setUpdateTime(new Date());
        banner.setUpdateUser(loginUserInfo.getId());
        bannerMapper.insert(banner);
        return banner.getId();
    }

    @Override
    public void deleteById(Integer id) {
        bannerMapper.update(new UpdateWrapper<Banner>().lambda()
                .set(Banner::getDeleted, Constants.ONE)
                .eq(Banner::getId, id));
    }

    @Override
    public void delete(Banner banner) {
        UpdateWrapper<Banner> deleteWrapper = new UpdateWrapper<>(banner);
        bannerMapper.delete(deleteWrapper);
    }

    @Override
    public void deleteByIdInBatch(List<Integer> ids) {
        if (CollectionUtils.isEmpty(ids)) {
            return;
        }
        for (Integer id : ids) {
            this.deleteById(id);
        }
    }

    @Override
    @Transactional(rollbackFor = {Exception.class, BusinessException.class})
    public void updateById(Banner banner) {
        validateBanner(banner, true);
        LoginUserInfo loginUserInfo = (LoginUserInfo) SecurityUtils.getSubject().getPrincipal();
        banner.setUpdateTime(new Date());
        banner.setUpdateUser(loginUserInfo.getId());
        bannerMapper.updateById(banner);
    }

    @Override
    public void updateStatus(Banner banner) {
        if (Objects.isNull(banner) || Objects.isNull(banner.getId()) || Objects.isNull(banner.getStatus())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST);
        }
        LoginUserInfo loginUserInfo = (LoginUserInfo) SecurityUtils.getSubject().getPrincipal();
        banner.setUpdateTime(new Date());
        banner.setUpdateUser(loginUserInfo.getId());
        bannerMapper.updateById(banner);
    }

    @Override
    public void updateByIdInBatch(List<Banner> banners) {
        if (CollectionUtils.isEmpty(banners)) {
            return;
        }
        for (Banner banner : banners) {
            this.updateById(banner);
        }
    }

    @Override
    public Banner findById(Integer id) {
        Banner banner = bannerMapper.selectById(id);
        if (Objects.isNull(banner)) {
            throw new BusinessException(ResponseStatus.DATA_EMPTY);
        }
        if (StringUtils.isNotBlank(banner.getImgurl())) {
            String path = getBannerPath();
            banner.setImgurlFull(path + banner.getImgurl());
        }
        return banner;
    }

    @Override
    public Banner findOne(Banner banner) {
        QueryWrapper<Banner> wrapper = new QueryWrapper<>(banner);
        return bannerMapper.selectOne(wrapper);
    }

    @Override
    public List<Banner> findList(Banner banner) {
        QueryWrapper<Banner> wrapper = new QueryWrapper<>(banner);
        return bannerMapper.selectList(wrapper);
    }

    @Override
    public PageData<Banner> findPage(PageWrap<Banner> pageWrap) {
        IPage<Banner> page = new Page<>(pageWrap.getPage(), pageWrap.getCapacity());
        QueryWrapper<Banner> queryWrapper = new QueryWrapper<>();
        Utils.MP.blankToNull(pageWrap.getModel());
        pageWrap.getModel().setDeleted(Constants.ZERO);
        if (pageWrap.getModel().getDeleted() != null) {
            queryWrapper.lambda().eq(Banner::getDeleted, pageWrap.getModel().getDeleted());
        }
        if (pageWrap.getModel().getStatus() != null) {
            queryWrapper.lambda().eq(Banner::getStatus, pageWrap.getModel().getStatus());
        }
        if (pageWrap.getModel().getPosition() != null) {
            queryWrapper.lambda().eq(Banner::getPosition, pageWrap.getModel().getPosition());
        }
        if (StringUtils.isNotBlank(pageWrap.getModel().getTitle())) {
            queryWrapper.lambda().like(Banner::getTitle, pageWrap.getModel().getTitle());
        }
        if (pageWrap.getModel().getType() != null) {
            queryWrapper.lambda().eq(Banner::getType, pageWrap.getModel().getType());
        }
        for (PageWrap.SortData sortData : pageWrap.getSorts()) {
            if (sortData.getDirection().equalsIgnoreCase(PageWrap.DESC)) {
                queryWrapper.orderByDesc(sortData.getProperty());
            } else {
                queryWrapper.orderByAsc(sortData.getProperty());
            }
        }
        PageData<Banner> result = PageData.from(bannerMapper.selectPage(page, queryWrapper));
        if (result != null && result.getRecords() != null) {
            String path = getBannerPath();
            for (Banner b : result.getRecords()) {
                if (StringUtils.isNotBlank(b.getImgurl())) {
                    b.setImgurlFull(path + b.getImgurl());
                }
            }
        }
        return result;
    }

    @Override
    public long count(Banner banner) {
        QueryWrapper<Banner> wrapper = new QueryWrapper<>(banner);
        return bannerMapper.selectCount(wrapper);
    }

    @Override
    public List<Banner> findListByPosition(Integer position) {
        QueryWrapper<Banner> wrapper = new QueryWrapper<>();
        wrapper.lambda()
                .eq(Banner::getDeleted, Constants.ZERO)
                .eq(Banner::getStatus, Constants.ZERO)
                .eq(Banner::getPosition, position)
                .orderByAsc(Banner::getSortnum);
        List<Banner> list = bannerMapper.selectList(wrapper);
        if (list != null && !list.isEmpty()) {
            String path = getBannerPath();
            for (Banner b : list) {
                if (StringUtils.isNotBlank(b.getImgurl())) {
                    b.setImgurlFull(path + b.getImgurl());
                }
            }
        }
        return list;
    }

    private void validateBanner(Banner banner, boolean requireId) {
        if (Objects.isNull(banner)) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST);
        }
        if (requireId && Objects.isNull(banner.getId())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST);
        }
        if (StringUtils.isBlank(banner.getTitle())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "标题不能为空");
        }
        if (StringUtils.isBlank(banner.getImgurl())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "图片不能为空");
        }
        if (Objects.isNull(banner.getStatus())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "状态不能为空");
        }
        if (Objects.isNull(banner.getPosition())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "显示位置不能为空");
        }
        if (Objects.isNull(banner.getType())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "跳转类型不能为空");
        }
        // 跳转类型为1(富文本)或2(外链)时，内容必填
        if (!Constants.equalsInteger(banner.getType(), Constants.ZERO) && StringUtils.isBlank(banner.getContent())) {
            throw new BusinessException(ResponseStatus.BAD_REQUEST.getCode(), "内容不能为空");
        }
    }

    private String getBannerPath() {
        return systemDictDataBiz.queryByCode(Constants.SYSTEM, Constants.RESOURCE_PATH).getCode()
                + systemDictDataBiz.queryByCode(Constants.SYSTEM, Constants.BANNER_FILES).getCode();
    }
}