package com.lf.server.service.show;

import com.lf.server.config.PropertiesConfig;
import com.lf.server.entity.all.StaticData;
import com.lf.server.entity.ctrl.DownloadTileEntity;
import com.lf.server.entity.ctrl.ShpRecordEntity;
import com.lf.server.entity.data.MetaFileEntity;
import com.lf.server.entity.data.PublishEntity;
import com.lf.server.entity.sys.UserEntity;
import com.lf.server.helper.FileHelper;
import com.lf.server.helper.ShpHelper;
import com.lf.server.helper.StringHelper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * 查询服务类
 * @author WWW
 */
@Service
public class InquiryService {
    @Resource
    PropertiesConfig config;

    /**
     * 读取Shp第一条记录的WKT
     */
    public ShpRecordEntity readShpFirstRecord(List<MetaFileEntity> list) {
        String fileName = null;
        for (MetaFileEntity mf : list) {
            if (mf.getName().toLowerCase().contains(".shp")) {
                fileName = mf.getPath();
                break;
            }
        }
        if (StringHelper.isEmpty(fileName)) {
            return null;
        }

        ShpRecordEntity sr = ShpHelper.readShpFirstRecord(fileName);
        FileHelper.deleteFiles(list);

        return sr;
    }

    /**
     * 打包瓦片
     */
    public String zipTiles(DownloadTileEntity dt, PublishEntity pub, UserEntity ue) {
        if (!TilePathExist(pub)) {
            return null;
        }

        List<String> list = findTiles(dt, pub);
        if (list.isEmpty()) {
            return null;
        }

        return "aaa";
    }

    /**
     * 瓦片路径是否存在
     */
    private boolean TilePathExist(PublishEntity pub) {
        String tilePath = config.getTilePath().replace("2d\\tiles", "") + File.separator + pub.getPath();

        File f = new File(tilePath);
        if (!f.exists() || !f.isDirectory()) {
            return false;
        }

        pub.setPath(tilePath);

        return true;
    }

    /**
     * 查找瓦片
     */
    private List<String> findTiles(DownloadTileEntity dt, PublishEntity pub) {
        List<String> list = new ArrayList<>();
        for (int i = 0; i < StaticData.I23; i++) {
            findTilesByZoom(dt, pub, i, list);
        }

        return list;
    }

    /**
     * 根据层次查找瓦片
     */
    private void findTilesByZoom(DownloadTileEntity dt, PublishEntity pub, int zoom, List<String> list) {
        File f = new File(pub.getPath() + File.separator + zoom);
        if (!f.exists() || !f.isDirectory()) {
            return;
        }

        //
    }
}