package com.moon.server.service.show;

import com.moon.server.entity.all.StaticData;
import com.moon.server.entity.ctrl.DownloadTileEntity;
import com.moon.server.entity.ctrl.ShpRecordEntity;
import com.moon.server.entity.data.DownloadEntity;
import com.moon.server.entity.data.MetaFileEntity;
import com.moon.server.entity.data.PublishEntity;
import com.moon.server.entity.sys.UserEntity;
import com.moon.server.service.data.DownloadService;
import com.moon.server.service.data.PublishService;
import com.moon.server.helper.*;
import net.lingala.zip4j.ZipFile;
import net.lingala.zip4j.model.ZipParameters;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Service;

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

@Service
@SuppressWarnings("ALL")
public class InquiryService {
    @Resource
    PathHelper pathHelper;

    @Resource
    PublishService publishService;

    @Resource
    DownloadService downloadService;

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

    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;
    }

    public String zipTiles(DownloadTileEntity dt, PublishEntity pub, UserEntity ue) {
        if (!isTilePathExist(pub)) {
            return null;
        }

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

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

        ZipFile zip = Zip4jHelper.createZipFile(zipFile, dt.getPwd());
        ZipParameters params = Zip4jHelper.getZipParams(true);
        addFiles(zip, params, list, pub.getPath() + File.separator);

        String dbPwd = Md5Helper.reverse(Md5Helper.generate(dt.getPwd()));
        DownloadEntity de = getDownloadEntity(ue, zipFile, dbPwd);
        int rows = downloadService.insert(de);
        if (de.getId() > 0) {
            insertPubDown(pub, de, ue);
        }

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

    private boolean isTilePathExist(PublishEntity pub) {
        String tilePath = pathHelper.getConfig().getTilePath() + pub.getPath();

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

        pub.setPath(tilePath);

        return true;
    }

    private List<File> findTiles(DownloadTileEntity dt, PublishEntity pub) {
        List<File> list = new ArrayList<>();

        File view = new File(pub.getPath() + File.separator + "view.htm");
        if (view.exists() && !view.isDirectory()) {
            list.add(view);
        }

        for (int i = 0; i < StaticData.I23; i++) {
            List<File> files = findTilesByZoom(dt, pub, i);
            if (files.size() > 0) {
                list.addAll(files);
            }
        }

        return list;
    }

    private List<File> findTilesByZoom(DownloadTileEntity dt, PublishEntity pub, int zoom) {
        List<File> list = new ArrayList<>();
        File f = new File(pub.getPath() + File.separator + zoom);
        if (!f.exists() || !f.isDirectory()) {
            return list;
        }

        int[] leftTop = deg2num(zoom, dt.getXmin(), dt.getYmax());
        int[] rightBottom = deg2num(zoom, dt.getXmax(), dt.getYmin());

        for (int x = leftTop[0]; x <= rightBottom[0]; x++) {
            for (int y = leftTop[1]; y <= rightBottom[1]; y++) {
                String pngPath = String.format("%s\\%d\\%d\\%d.png", pub.getPath(), zoom, x, y);

                File pngFile = new File(pngPath);
                if (pngFile.exists()) {
                    list.add(pngFile);
                }
            }
        }

        return list;
    }

    private int[] deg2num(int zoom, double x, double y) {
        double yRad = Math.toRadians(y);
        double n = Math.pow(2.0, zoom);

        int xTile = (int) ((x + 180.0) / 360.0 * n);
        int yTile = (int) ((1.0 - Math.log(Math.tan(yRad) + (1 / Math.cos(yRad))) / Math.PI) / 2.0 * n);

        return new int[]{xTile, yTile};
    }

    private void addFiles(ZipFile zip, ZipParameters params, List<File> list, String basePath) {
        for (File f : list) {
            try {
                params.setFileNameInZip(f.getPath().replace(basePath, ""));
                zip.addStream(new FileInputStream(f), params);
            } 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(8);
        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("瓦片文件");
        de.setGuid(FileHelper.getFileMd5(file));
        de.setCreateUser(ue.getId());
        // de.setGeom(null)

        return de;
    }

    private void insertPubDown(PublishEntity pub, DownloadEntity de, UserEntity ue) {
        publishService.insertPubDown(pub.getId(), de.getId(), ue.getId());
    }
}