package com.moon.server.service.all;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moon.server.controller.all.BaseController;
import com.moon.server.entity.all.*;
import com.moon.server.entity.ctrl.KeyValueEntity;
import com.moon.server.entity.data.DownloadEntity;
import com.moon.server.entity.data.MetaEntity;
import com.moon.server.entity.data.MetaFileEntity;
import com.moon.server.entity.sys.AttachEntity;
import com.moon.server.entity.sys.UserEntity;
import com.moon.server.helper.*;
import com.moon.server.mapper.all.BasicMapper;
import com.moon.server.mapper.data.DownloadMapper;
import com.moon.server.service.sys.AttachService;
import net.lingala.zip4j.ZipFile;
import net.lingala.zip4j.model.FileHeader;
import net.lingala.zip4j.model.ZipParameters;
import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.lang.reflect.Field;
import java.util.*;

@Service
@SuppressWarnings("ALL")
public class UploadAttachService {
    @Autowired
    PathHelper pathHelper;

    @Autowired
    AttachService attachService;

    @Autowired
    DownloadMapper downloadMapper;

    private static String tabs = "''";

    public final static Map<String, String> ATTACH_TABS = new HashMap<>();

    private final static Log log = LogFactory.getLog(UploadAttachService.class);

    public static String getTabs() {
        return tabs;
    }

    public static void init(String cfg) {
        if (StringHelper.isEmpty(cfg)) {
            return;
        }

        String[] strs = cfg.split(StaticData.COMMA);
        if (strs.length == 0) {
            return;
        }

        List<String> keys = new ArrayList<>();
        for (String str : strs) {
            if (ATTACH_TABS.containsKey(str)) {
                continue;
            }

            ATTACH_TABS.put(str, str.contains("bd.") ? "materiname" : "photono");
            keys.add("'" + str + "'");
        }
        tabs = StringHelper.join(keys, ",");
    }

    public ResponseMsg<String> upload(UserEntity ue, String tab, MultipartFile file, BaseController ctrl) {
        try {
            if (file == null && file.isEmpty()) {
                return ctrl.fail("文件上传为空", null);
            }
            if (file.getSize() > SettingData.MAX_FILE_SIZE) {
                return ctrl.fail(String.format("文件大于 %d MB", SettingData.MAX_FILE_SIZE / 1024 / 1024), null);
            }

            String oldName = file.getOriginalFilename();
            String filePath = pathHelper.getTempPath() + File.separator + oldName;
            File newFile = new File(filePath);
            file.transferTo(newFile);
            double sizes = FileHelper.sizeToMb(file.getSize());

            String md5 = FileHelper.getFileMd5(filePath);
            AttachEntity entity = attachService.selectByGuid(md5);
            if (entity != null) {
                newFile.delete();
                return ctrl.success("文件已存在", md5);
            }

            AttachEntity ae = getAttachEntity(ue, tab, oldName, md5, sizes);
            String targetPath = pathHelper.getConfig().getUploadPath() + File.separator + ae.getPath();
            newFile.renameTo(new File(targetPath));

            int rows = attachService.insert(ae);

            return rows > 0 ? ctrl.success(md5) : ctrl.fail("保存文件失败", null);
        } catch (Exception ex) {
            return ctrl.fail(ex.getMessage(), null);
        }
    }

    protected AttachEntity getAttachEntity(UserEntity ue, String tab, String oldName, String md5, double sizes) {
        AttachEntity entity = new AttachEntity();
        entity.setName(oldName);
        entity.setTab(tab);
        entity.setGuid(md5);
        String subPath = PathHelper.getUploadPath() + File.separator + md5 + FileHelper.getExtension(oldName);
        entity.setPath(subPath);
        entity.setSizes(sizes);
        if (ue != null) {
            entity.setCreateUser(ue.getId());
        }

        return entity;
    }

    public void download(String guid, HttpServletResponse res) {
        download(guid, false, res);
    }

    public void download(String guid, boolean inline, HttpServletResponse res) {
        try {
            if (StringHelper.isEmpty(guid)) {
                WebHelper.writeStr2Page(res, StaticData.NO_FILE);
                return;
            }

            AttachEntity entity = attachService.selectByGuid(guid);
            if (entity == null) {
                WebHelper.writeStr2Page(res, StaticData.NO_FILE);
                return;
            }

            String filePath = pathHelper.getConfig().getUploadPath() + File.separator + entity.getPath();
            File file = new File(filePath);
            if (!file.exists() || file.isDirectory()) {
                WebHelper.writeJson2Page(res, "文件不存在");
            }

            WebHelper.download(filePath, entity.getName(), inline, res);
        } catch (Exception ex) {
            WebHelper.writeJson2Page(res, "文件下载出错");
            log.error(ex.getMessage(), ex);
        }
    }

    public List<KeyValueEntity> uploadXlsAnnex(UserEntity ue, List<MetaEntity> ms, List<MetaFileEntity> list, String path) {
        List<String> files = getAttachFiles(list, path);
        if (files.size() == 0) {
            return null;
        }

        List<KeyValueEntity> rs = new ArrayList<>();
        for (MetaEntity meta : ms) {
            int rows = uploadXlsAnnex(ue, meta, files);
            rs.add(new KeyValueEntity(meta.getName(), String.valueOf(rows)));
        }

        return rs;
    }

    private List<String> getAttachFiles(List<MetaFileEntity> list, String path) {
        List<String> files = new ArrayList<>();

        for (MetaFileEntity mf : list) {
            if (mf.getName().contains(StaticData.ZIP)) {
                List<String> subs = getZipFiles(mf, path);
                if (null != subs && subs.size() > 0) {
                    files.addAll(subs);
                }
                continue;
            }

            files.add(mf.getPath());
        }

        return files;
    }

    private List<String> getZipFiles(MetaFileEntity mf, String path) {
        File file = new File(mf.getPath());
        if (!file.exists() || file.isDirectory()) {
            return null;
        }

        File zipFolder = new File(pathHelper.getConfig().getTempPath() + File.separator + path + "_zip");
        if (!zipFolder.exists() || !zipFolder.isDirectory()) {
            zipFolder.mkdirs();
        }

        String subPath = zipFolder + File.separator + mf.getName().toLowerCase().replace(".zip", "");
        ZipHelper.unzip(mf.getPath(), subPath);

        List<String> files = new ArrayList<>();
        getFilesByPath(files, subPath);

        return files;
    }

    private void getFilesByPath(List<String> list, String path) {
        File file = new File(path);
        if (!file.isDirectory()) {
            list.add(file.getPath());
            return;
        }

        File[] files = file.listFiles();
        if (null == files) {
            return;
        }

        for (File f : files) {
            if (f.isDirectory()) {
                getFilesByPath(list, f.getPath());
            } else {
                list.add(f.getPath());
            }
        }
    }

    private int uploadXlsAnnex(UserEntity ue, MetaEntity meta, List<String> files) {
        List<?> list = queryXlsData(meta);
        if (null == list || list.size() == 0) {
            return 0;
        }

        Field field = getAnnexField(list.get(0), meta.getTab());
        String folder = meta.getName().split("\\.")[0].trim().toLowerCase() + File.separator;

        int rows = 0;
        for (Object obj : list) {
            String[] names = getNames(getAnnexName(obj, field));
            if (null == names || names.length == 0) {
                continue;
            }

            for (String name : names) {
                String file = findAnnexFile(name, folder, files);
                if (null == file) {
                    continue;
                }

                rows += insertXlsAnnex(ue, meta, (BaseEntity) obj, file);
            }
        }

        return rows;
    }

    public static String[] getNames(String str) {
        if (StringHelper.isEmpty(str)) {
            return null;
        }

        return str.replace("；", ",").replace("，", ",").split(",");
    }

    private List<?> queryXlsData(MetaEntity meta) {
        String entity = meta.getTab().substring(meta.getTab().indexOf(".") + 1).replace("_", "").toLowerCase();
        BasicMapper basicMapper = ClassHelper.getBasicMapper(entity);
        if (null == basicMapper) {
            return null;
        }

        QueryWrapper wrapper = new QueryWrapper();
        wrapper.eq("parentid", meta.getEventid());

        List<?> list = basicMapper.selectList(wrapper);
        if (null == list || list.size() == 0) {
            return null;
        }
        if (!(list.get(0) instanceof BaseEntity)) {
            return null;
        }

        return list;
    }

    public static Field getAnnexField(Object obj, String tab) {
        try {
            String str = ATTACH_TABS.get(tab);

            Field field = obj.getClass().getDeclaredField(str);
            field.setAccessible(true);

            return field;
        } catch (Exception ex) {
            return null;
        }
    }

    public static String getAnnexName(Object obj, Field field) {
        try {
            Object val = field.get(obj);

            return null == val ? null : val.toString().trim();
        } catch (Exception ex) {
            return null;
        }
    }

    private String findAnnexFile(String name, String folder, List<String> files) {
        name = File.separator + name.split("\\.")[0].trim().toLowerCase();
        for (String file : files) {
            if (file.toLowerCase().contains(folder) && file.toLowerCase().contains(name)) {
                return file;
            }
        }
        for (String file : files) {
            if (file.toLowerCase().contains(name)) {
                return file;
            }
        }

        return null;
    }

    private int insertXlsAnnex(UserEntity ue, MetaEntity meta, BaseEntity be, String file) {
        File f = new File(file);
        if (!f.exists() || f.isDirectory()) {
            return 0;
        }

        String md5 = FileHelper.getFileMd5(file);
        AttachEntity old = attachService.selectByTabAndGuid(meta.getTab(), be.getEventid(), md5);
        if (null != old) {
            return 0;
        }

        String fileName = FileHelper.getFileName(file);
        double sizes = FileHelper.sizeToMb(f.length());

        AttachEntity ae = getAttachEntity(ue, meta.getTab(), be.getEventid(), fileName, md5, sizes);
        String targetPath = pathHelper.getConfig().getUploadPath() + File.separator + ae.getPath();

        try {
            FileUtils.copyFile(f, new File(targetPath));
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }

        return attachService.insert(ae);
    }

    protected AttachEntity getAttachEntity(UserEntity ue, String tabName, String eventid, String fileName, String md5, double sizes) {
        AttachEntity entity = new AttachEntity();
        entity.setTab(tabName);
        entity.setTabGuid(eventid);
        entity.setName(fileName);
        entity.setGuid(md5);
        String subPath = PathHelper.getUploadPath() + File.separator + md5 + FileHelper.getExtension(fileName);
        entity.setPath(subPath);
        entity.setSizes(sizes);
        if (ue != null) {
            entity.setCreateUser(ue.getId());
        }

        return entity;
    }

    public String downloadReqForGuids(UserEntity ue, List<String> guids) {
        List<AttachEntity> list = attachService.selectByGuids(guids);

        return downloadReq(ue, list);
    }

    public String downloadReqForTabGuids(UserEntity ue, String tab, List<String> guids) {
        List<AttachEntity> list = attachService.selectByTabGuids(tab, guids);

        return downloadReq(ue, list);
    }

    protected String downloadReq(UserEntity ue, List<AttachEntity> list) {
        if (null == list || list.isEmpty()) {
            return null;
        }

        String zipName = StringHelper.YMDHMS2_FORMAT.format(new Date()) + ".zip";
        String zipFile = pathHelper.getDownloadFullPath() + File.separator + zipName;

        ZipFile zip = Zip4jHelper.createZipFile(zipFile, null);
        ZipParameters params = Zip4jHelper.getZipParams(false);
        addZipFiles(zip, params, list);

        DownloadEntity downloadEntity = getDownloadEntity(ue, zipFile, null);
        int rows = downloadMapper.insert(downloadEntity);

        return rows > 0 ? downloadEntity.getGuid() : null;
    }

    private void addZipFiles(ZipFile zip, ZipParameters params, List<AttachEntity> list) {
        int i = 1;
        String uploadPath = pathHelper.getConfig().getUploadPath();
        for (AttachEntity ae : list) {
            try {
                String filePath = uploadPath + File.separator + ae.getPath();

                File file = new File(filePath);
                if (!file.exists() || file.isDirectory()) {
                    continue;
                }

                zip.addFile(file, params);
                FileHeader header = zip.getFileHeader(file.getName());
                if (null != header) {
                    zip.renameFile(header, i + "_" + ae.getName());
                }
            } catch (Exception ex) {
                log.error(ex.getMessage(), ex);
            }
        }
    }

    private DownloadEntity getDownloadEntity(UserEntity ue, String file, String pwd) {
        DownloadEntity de = new DownloadEntity();
        de.setName(FileHelper.getFileName(file));
        // 1-Shp文件，2-专题图，3-元数据，4-业务数据，5-管道分析，6-统计报告，7-附件文件，8-瓦片文件
        de.setType(7);
        de.setSizes(FileHelper.sizeToMb(new File(file).length()));
        de.setDepid(ue.getDepid());
        de.setDcount(0);
        de.setPwd(pwd);
        de.setUrl(FileHelper.getRelativePath(file));
        de.setDescr("附件文件");
        de.setGuid(FileHelper.getFileMd5(file));
        de.setCreateUser(ue.getId());
        // de.setGeom(null)

        return de;
    }
}