package com.xcong.farmer.cms.modules.system.service.Impl;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.file.FileWriter;
import cn.hutool.core.util.StrUtil;
import cn.hutool.core.util.ZipUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xcong.farmer.cms.common.exception.GlobalException;
import com.xcong.farmer.cms.common.response.Result;
import com.xcong.farmer.cms.common.utils.FileUtils;
import com.xcong.farmer.cms.configurations.properties.CmsProperties;
import com.xcong.farmer.cms.modules.system.dto.AdminSaveTemplateInfoDto;
import com.xcong.farmer.cms.modules.system.dto.TemplateListDto;
import com.xcong.farmer.cms.modules.system.entity.CmsTemplateEntity;
import com.xcong.farmer.cms.modules.system.mapper.CmsTemplateMapper;
import com.xcong.farmer.cms.modules.system.service.ICmsTemplateService;
import com.xcong.farmer.cms.modules.system.util.LoginUserUtil;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;

/**
 * @author wzy
 * @date 2022-07-04
 **/
@Service
public class CmsTemplateServiceImpl extends ServiceImpl<CmsTemplateMapper, CmsTemplateEntity> implements ICmsTemplateService {

    @Autowired
    private CmsProperties properties;

    private List<String> fileSuffix = Arrays.asList(".zip", ".html");

    @Override
    public void updateTemplate(MultipartFile upload) {
        String templatePath = properties.getTemplatePath();
        String staticPath = properties.getStaticPath();
        Long companyId = LoginUserUtil.getCompanyId();

        String filename = upload.getOriginalFilename();
        String suffix = filename.substring(filename.lastIndexOf("."));

        if (!fileSuffix.contains(suffix)) {
            throw new GlobalException("请上传正确格式文件");
        }

        try {
            String path = FileUtils.path(templatePath, filename);
            File file = new File(path);
            upload.transferTo(file);

            if (".zip".equals(suffix)) {
                ZipUtil.unzip(file, new File(templatePath));
                FileUtil.del(file);

                File template = new File(templatePath);
                File[] files = template.listFiles();
                if (files == null) {
                    return;
                }

                for (File templateFile : files) {
                    if (!templateFile.isFile()) {
                        FileUtil.move(templateFile, new File(staticPath), true);
                        continue;
                    }

                    if (!"html".equals(FileUtil.extName(templateFile))) {
                        continue;
                    }

                    String name = templateFile.getName();
                    if (!name.endsWith(".list.html") && !name.endsWith(".article.html") && !name.endsWith("index.html")) {
                        continue;
                    }

                    insertTemplate(templateFile, companyId);
                }
            }

            if (".html".equals(suffix)) {
                FileUtil.touch(file);

                insertTemplate(file, companyId);
            }
        } catch (IOException e) {
            e.printStackTrace();
            throw new GlobalException("模板上传失败");
        }
    }

    private void insertTemplate(File file, Long companyId) throws IOException {
        Document parse = Jsoup.parse(file, null);
        String attr = parse.head().attr("name");

        staticPathParser(parse, "img", "src");
        staticPathParser(parse, "link", "href");
        staticPathParser(parse, "script", "src");

        FileOutputStream outputStream = new FileOutputStream(file);
        outputStream.write(parse.html().getBytes());
        outputStream.close();

        CmsTemplateEntity cmsTemplate = new CmsTemplateEntity();
        cmsTemplate.setCompanyId(companyId);
        if (file.getName().endsWith(".list.html")) {
            cmsTemplate.setType(2);
        } else if (file.getName().endsWith(".article.html")) {
            cmsTemplate.setType(3);
        } else {
            cmsTemplate.setType(1);
        }
        cmsTemplate.setName(StrUtil.isNotBlank(attr) ? attr : file.getName());
        cmsTemplate.setPath(file.getName());

        this.baseMapper.insert(cmsTemplate);
    }

    private void staticPathParser(Document document, String tagName, String attrKey) {
        Elements elements = document.getElementsByTag(tagName);
        if (elements.isEmpty()) {
            return;
        }

        for (Element element : elements) {
            String attr = element.attr(attrKey);
            if (StrUtil.isNotBlank(attr) && !attr.contains("http://") && !attr.contains("https://")) {
                element.attr(attrKey, cmsProperties.getStaticUrl() + attr);
            }
        }
    }

    @Override
    public IPage<CmsTemplateEntity> findInPage(TemplateListDto templateListDto) {
        Long companyId = LoginUserUtil.getCompanyId();
        IPage<CmsTemplateEntity> page = new Page<>(templateListDto.getPageNum(), templateListDto.getPageSize());

        CmsTemplateEntity template = new CmsTemplateEntity();
        template.setCompanyId(companyId);
        return this.baseMapper.selectInPage(page, template);
    }

    @Override
    public void delete(Long id) {
        Long companyId = LoginUserUtil.getCompanyId();
        this.baseMapper.delete(id, companyId);
    }

    @Override
    public Result dropdownList() {
        Long companyId = LoginUserUtil.getCompanyId();
        QueryWrapper<CmsTemplateEntity> objectQueryWrapper = new QueryWrapper<>();
        objectQueryWrapper.eq("company_id",companyId);
        List<CmsTemplateEntity> cmsTemplateEntities = this.baseMapper.selectList(objectQueryWrapper);
        return Result.ok(cmsTemplateEntities);
    }

    @Autowired
    private CmsProperties cmsProperties;

    @Override
    public Result viewTemplateInfo(Long id) {
        Result result = new Result();
        CmsTemplateEntity cmsTemplateEntity = this.baseMapper.selectById(id);
        String templatePath = cmsProperties.getTemplatePath();
        String pathName = FileUtils.path(templatePath, cmsTemplateEntity.getPath());

        byte[] bytes = new byte[0];
        try {
            bytes = Files.readAllBytes(Paths.get(pathName));
        } catch (IOException e) {
            e.printStackTrace();
            return result.fail("未找到模板");
        }

        String content = new String(bytes, StandardCharsets.UTF_8);
        result.setData(content);
        return result;
    }

    @Override
    @Transactional
    public Result saveTemplateInfo(AdminSaveTemplateInfoDto adminSaveTemplateInfoDto) {
        Long companyId = LoginUserUtil.getCompanyId();
        Long id = adminSaveTemplateInfoDto.getId();
        CmsTemplateEntity cmsTemplateEntity = this.baseMapper.selectByIdAndCompanyId(id,companyId);
        String name = cmsTemplateEntity.getName();
        Integer type = cmsTemplateEntity.getType();
        String templatePath = cmsProperties.getTemplatePath();
        String path = cmsTemplateEntity.getPath();

        this.baseMapper.delete(id,companyId);
        String pathNew = FileUtils.path(templatePath, path);
        File file = new File(pathNew);
        FileUtil.touch(file);

        //文件写入，直接覆盖
        FileWriter writer = new FileWriter(file);
        writer.write(adminSaveTemplateInfoDto.getTemplateInfo(), false);

        CmsTemplateEntity cmsTemplate = new CmsTemplateEntity();
        cmsTemplate.setCompanyId(companyId);
        cmsTemplate.setType(type);
        cmsTemplate.setName(name);
        cmsTemplate.setPath(path);
        this.baseMapper.insert(cmsTemplate);

        return Result.ok("保存成功");
    }

}