package com.jkcredit.sysnews.service.photo;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.jkcredit.sysnews.enums.PhotoStatusEnum;
import com.jkcredit.sysnews.mapper.PhotoMapper;
import com.jkcredit.sysnews.model.dto.photo.PhotoDto;
import com.jkcredit.sysnews.model.po.photo.PhotoPo;
import com.jkcredit.sysnews.model.vo.photo.PhotoVo;
import com.jkcredit.sysnews.service.base.BaseService;
import com.jkcredit.sysnews.spi.lang.constant.CommonConstant;
import com.jkcredit.sysnews.spi.lang.exception.ServiceException;
import com.jkcredit.sysnews.util.AssertUtils;
import com.jkcredit.sysnews.util.BeanUtil;
import com.jkcredit.sysnews.util.UploadUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.File;
import java.io.IOException;
import java.util.*;

/**
 * @description:
 * @author: xusonglin
 * @create: 2020/3/1 0:26
 * @version: V1.0
 **/
@Slf4j
@Service
@Transactional(readOnly = true)
public class PhotoServiceImpl extends BaseService implements PhotoService {
    @Value("${photo.uploadPath}")
    private String uploadPath;
    @Value("${photo.accessPath}")
    private String accessPath;
    @Value("${photo.accessResource}")
    private String accessResource;

    @Resource
    PhotoMapper photoMapper;

    @Override
    @Transactional(rollbackFor = ServiceException.class)
    public String upload(MultipartFile photo) {
        String fileName = UUID.randomUUID().toString().replace("-","") + "-" +
                photo.getOriginalFilename();
        Calendar cal = Calendar.getInstance();
        int month = cal.get(Calendar.MONTH) + 1;
        int year = cal.get(Calendar.YEAR);
        String directoryName = year+"-"+month;
        String filePath = uploadPath + directoryName + File.separator + fileName;
        try {
            UploadUtil.upload(photo, filePath);
        } catch (IOException ioe) {
            log.error("图片上传失败，失败原因：{}", ioe.getMessage());
            throw new ServiceException("图片上传失败");
        }

        try {
            PhotoPo photoPo = new PhotoPo();
            photoPo.setCreateTime(new Date());
            photoPo.setStatus(PhotoStatusEnum.UPLOAD_SUCCESS_NOT_USE.getValue());
            photoPo.setUrl(File.separator+ directoryName + File.separator + fileName);
            photoMapper.insert(photoPo);
        } catch (Exception e) {
            log.error("图片上传-新增图片失败, 图片地址：{}", filePath);
            log.error("图片上传-新增图片失败，失败原因：{}", e.getMessage());
            throw new ServiceException("图片上传-新增图片失败");
        }
        return accessPath + accessResource + File.separator + directoryName + File.separator + fileName;
    }

    @Override
    public IPage<PhotoVo> getPhotos(Page page, PhotoDto photoDto) {
        IPage<PhotoPo> photoPoIPage = photoMapper.getPhotos(page, photoDto);
        return photoPoIPage.convert(this::convert);
    }

    private PhotoVo convert(PhotoPo po) {
        PhotoVo vo = new PhotoVo();
        BeanUtils.copyProperties(po, vo);
        return vo;
    }

    @Override
    @Transactional(rollbackFor = ServiceException.class)
    public PhotoVo savePhoto(PhotoDto photoDto) {
        validate(photoDto);
        String fileName = UUID.randomUUID().toString().replace("-","") + "-" +
                photoDto.getPhoto().getOriginalFilename();
        Calendar cal = Calendar.getInstance();
        int month = cal.get(Calendar.MONTH) + 1;
        int year = cal.get(Calendar.YEAR);
        String directoryName = year+"-"+month;
        String filePath = uploadPath + File.separator + directoryName + File.separator + fileName;

        try {
            UploadUtil.upload(photoDto.getPhoto(), filePath);

        } catch (IOException ioe) {
            log.error("图片上传失败，失败原因：{}", ioe.getMessage());
            throw new ServiceException("图片上传失败");
        }
        File dest = new File(filePath);
        if (!dest.getParentFile().exists()) {
            log.error("图片上传失败，失败原因：服务器图片不存在");
            throw new ServiceException("图片上传失败");
        }

        photoDto.setUrl(File.separator+ directoryName + File.separator + fileName);
        PhotoPo photoPo = new PhotoPo();
        BeanUtil.copyProperties(photoPo, photoDto);
        photoPo.setCreateTime(new Date());

        try {
            photoMapper.insert(photoPo);
            PhotoVo photoVo = new PhotoVo();
            BeanUtil.copyProperties(photoVo, photoPo);
            photoVo.setStatus(2);
            return photoVo;
        } catch (Exception e) {
            log.error("新增图片数据失败，失败原因：{}", e.getMessage());
            throw new ServiceException("新增图片数据失败");
        }
    }

    @Override
    @Transactional(rollbackFor = ServiceException.class)
    public void editPhoto(PhotoDto photoDto) {
        validate(photoDto);

        PhotoPo photoPo = photoMapper.selectById(photoDto.getId());
        AssertUtils.assertNotNull(photoPo, CommonConstant.PHOTO_NOT_EXIST);

        if (!StringUtils.isBlank(photoDto.getName())) {
            photoPo.setName(photoDto.getName());
        }
        if (photoDto.getStatus() != null) {
            photoPo.setStatus(photoDto.getStatus());
        }
        if (photoDto.getType() != null) {
            photoPo.setType(photoDto.getType());
        }
        if (photoDto.getGoPageUrl() != null) {
            photoPo.setGoPageUrl(photoDto.getGoPageUrl());
        }
        photoPo.setUpdateTime(new Date());
        try {
            photoMapper.updateById(photoPo);
        } catch (Exception e) {
            log.error("修改图片数据失败，失败原因：{}", e.getMessage());
            throw new ServiceException("修改图片数据异常");
        }
    }

    @Override
    @Transactional(rollbackFor = ServiceException.class)
    public void deletePhoto(Long id) {
        PhotoPo photoPo = photoMapper.selectById(id);
        AssertUtils.assertNotNull(photoPo, CommonConstant.PHOTO_NOT_EXIST);

        String url = uploadPath + photoPo.getUrl();
        File file = new File(url);

        boolean deleteResult = false;
        if (file.exists()) {
            deleteResult = file.delete();
        }

        if (deleteResult) {
            photoPo.setActivated(CommonConstant.ACTIVATED_DELETED);
            photoPo.setUpdateTime(new Date());
            try {
                photoMapper.updateById(photoPo);
            } catch (Exception e) {
                log.error("删除图片失败，失败原因：{}", e.getMessage());
                throw new ServiceException("删除图片失败");
            }
        } else {
            throw new ServiceException("删除图片失败");
        }
    }

    @Override
    public PhotoVo getPhotoById(Long id) {
        PhotoPo photoPo = photoMapper.selectById(id);
        PhotoVo photoVo = new PhotoVo();
        BeanUtil.copyProperties(photoVo, photoPo);
        if (photoPo.getUrl() != null) {
            String url = accessPath + accessResource + photoPo.getUrl().replace("/","");
            photoVo.setUrl(url);
        }
        return photoVo;
    }

    @Override
    public PhotoPo getPhotoByUrl(String url) {
        return photoMapper.getPhotoByUrl(url);
    }

    @Override
    public JSONObject getPhotosForHomePage() {
        JSONObject result = new JSONObject();
        PhotoPo middlePhoto = photoMapper.getHomePageMiddlePhoto();
        PhotoVo middlePhotoVo = new PhotoVo();
        if (middlePhoto != null) {
            BeanUtil.copyProperties(middlePhotoVo, middlePhoto);
            if (middlePhoto.getUrl() != null) {
                String url = accessPath + accessResource + middlePhoto.getUrl().replace("/","");
                middlePhotoVo.setUrl(url);
            }
        }

        List<PhotoPo> homePageMainPhotos = photoMapper.getHomePageMainPhotos();
        List<PhotoVo> mainPhotos = new ArrayList<>();
        for (PhotoPo po : homePageMainPhotos) {
            PhotoVo vo = new PhotoVo();
            BeanUtil.copyProperties(vo, po);
            if (po.getUrl() != null) {
                String url = accessPath + accessResource + po.getUrl().replace("/","");
                vo.setUrl(url);
            }
            mainPhotos.add(vo);
        }

        result.put("1", mainPhotos);
        result.put("2", middlePhotoVo);
        return result;
    }
}