package com.lf.server.service.show;

import com.lf.server.entity.ctrl.MarkJsonEntity;
import com.lf.server.entity.data.DownloadEntity;
import com.lf.server.entity.data.MetaEntity;
import com.lf.server.entity.show.MarkEntity;
import com.lf.server.entity.sys.UserEntity;
import com.lf.server.helper.*;
import com.lf.server.mapper.show.MarkMapper;
import com.lf.server.service.data.DownloadService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * 标绘
 * @author WWW
 */
@Service
public class MarkService implements MarkMapper {
    @Autowired
    MarkMapper markMapper;

    @Autowired
    PathHelper pathHelper;

    @Autowired
    DownloadService downloadService;

    @Override
    public Integer selectCount(Integer uid) {
        return markMapper.selectCount(uid);
    }

    @Override
    public List<MarkEntity> selectByPage(Integer uid, Integer limit, Integer offset) {
        return markMapper.selectByPage(uid, limit, offset);
    }

    @Override
    public List<MarkEntity> selectAll() {
        return markMapper.selectAll();
    }

    @Override
    public MarkEntity selectById(int id) {
        return markMapper.selectById(id);
    }

    @Override
    public Integer insert(MarkEntity entity) {
        return markMapper.insert(entity);
    }

    @Override
    public Integer inserts(List<MarkEntity> list) {
        return markMapper.inserts(list);
    }

    @Override
    public Integer delete(int id) {
        return markMapper.delete(id);
    }

    @Override
    public Integer deletes(List<Integer> ids) {
        return markMapper.deletes(ids);
    }

    @Override
    public Integer update(MarkEntity entity) {
        return markMapper.update(entity);
    }

    @Override
    public Integer updates(List<MarkEntity> list) {
        return markMapper.updates(list);
    }

    /**
     * 下载ShapeFile文件
     *
     * @param ue   用户实体
     * @param list 标绘JSON实体类集合
     * @param req  请求
     * @param res  响应
     * @return GUID
     * @throws Exception 异常
     */
    public String downloadShp(UserEntity ue, List<MarkJsonEntity> list, HttpServletRequest req, HttpServletResponse res) throws Exception {
        String parent = pathHelper.getTempPath();

        String path = createShapeFiles(ue, list, parent);
        File[] files = new File(path).listFiles();
        if (files == null || files.length == 0) {
            return null;
        }

        String zip = getZip();
        ZipHelper.zip(zip, parent);
        FileHelper.deleteDir(parent);

        String guid = FileHelper.getFileMd5(zip);
        DownloadEntity entity = downloadService.selectByGuid(guid);
        if (entity != null) {
            return entity.getGuid();
        }

        DownloadEntity de = getDownloadEntity(ue, zip);
        int rows = downloadService.insert(de);

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

    private String createShapeFiles(UserEntity ue, List<MarkJsonEntity> list, String parent) {
        String path = getShpDir(ue, parent);

        List<MarkJsonEntity> points = getMarkByType(list, "POINT");
        if (points.size() > 0) {
            String pointFile = ShpHelper.createShp(points, path, "POINT");
        }
        List<MarkJsonEntity> lines = getMarkByType(list, "LINESTRING");
        if (lines.size() > 0) {
            String lineFile = ShpHelper.createShp(lines, path, "LINESTRING");
        }
        List<MarkJsonEntity> polygons = getMarkByType(list, "POLYGON");
        if (polygons.size() > 0) {
            String polygonFile = ShpHelper.createShp(polygons, path, "POLYGON");
        }

        return path;
    }

    private String getShpDir(UserEntity ue, String parent) {
        String path = parent + File.separator + WebHelper.getRandomInt(100000, 1000000);

        File file = new File(path);
        if (!file.exists() && !file.isDirectory()) {
            file.mkdirs();
        }

        return path;
    }

    private List<MarkJsonEntity> getMarkByType(List<MarkJsonEntity> list, String type) {
        List<MarkJsonEntity> rs = new ArrayList<MarkJsonEntity>();
        for (MarkJsonEntity mark : list) {
            if (StringHelper.isEmpty(mark.getWkt())) {
                continue;
            }
            if (mark.getWkt().indexOf(type) > -1) {
                rs.add(mark);
            }
        }

        return rs;
    }

    private String getZip() {
        String path = pathHelper.getDownloadFullPath() + File.separator + StringHelper.YMDHMS2_FORMAT.format(new Date()) + ".zip";

        File file = new File(path);
        if (file.exists() && !file.isDirectory()) {
            file.delete();
        }

        return path;
    }

    private DownloadEntity getDownloadEntity(UserEntity ue, String file) throws Exception {
        DownloadEntity de = new DownloadEntity();
        de.setName(FileHelper.getFileName(file));
        de.setType(1);
        de.setSizes(FileHelper.sizeToMb(new File(file).length()));
        de.setDepid(ue.getDepid());
        de.setDcount(0);
        // de.setPwd(null)
        de.setUrl(FileHelper.getRelativePath(file));
        de.setDescr("ShapeFile文件");
        de.setGuid(FileHelper.getFileMd5(file));
        de.setCreateUser(ue.getId());
        // de.setGeom(null)

        return de;
    }

    /**
     * 获取下载文件路径
     *
     * @param de 下载实体类
     * @return 下载文件路径
     */
    public String getDownloadFilePath(DownloadEntity de) {
        return pathHelper.getConfig().getDownloadPath() + File.separator + de.getUrl();
    }

    /**
     * 读取ShapeFile文件获取Mark实体类
     *
     * @param list ShapeFile文件列表
     * @return Mark实体类集合
     */
    public List<MarkJsonEntity> readShpForMarks(List<MetaEntity> list) {
        String fileName = null;
        for (MetaEntity mf : list) {
            if (mf.getName().toLowerCase().indexOf(".shp") > -1) {
                fileName = mf.getPath();
                break;
            }
        }
        if (StringHelper.isEmpty(fileName)) {
            return null;
        }

        List<MarkJsonEntity> mjeList = ShpHelper.readShpForMarks(fileName);
        FileHelper.deleteFiles(list);

        return mjeList;
    }
}