package com.se.nsl.service;

import cn.hutool.core.io.FileUtil;
import com.alibaba.fastjson.JSON;
import com.se.nsl.config.PropertiesConfig;
import com.se.nsl.domain.dto.*;
import com.se.nsl.domain.po.DataPo;
import com.se.nsl.domain.po.PondingPo;
import com.se.nsl.domain.po.SimuData;
import com.se.nsl.domain.vo.BuildingDepthVo;
import com.se.nsl.helper.ComHelper;
import com.se.nsl.helper.GdalHelper;
import com.se.nsl.helper.ShpHelper;
import lombok.extern.slf4j.Slf4j;
import org.gdal.gdal.Band;
import org.gdal.gdal.Dataset;
import org.gdal.gdal.gdal;
//import org.gdal.gdalconstConstants.gdalconst;
import org.gdal.gdalconst.gdalconstConstants;
import org.gdal.ogr.*;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

import javax.annotation.Resource;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

@Slf4j
@Service
@SuppressWarnings("ALL")
public class TestService {
    @Resource
    PropertiesConfig config;

    @Resource
    ResultService resultService;

    public final static double MIN_VAL = 0.00001;

    public final static double MAX_X_OFFSET = 0;

    public final static SimpleDateFormat SDF = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    public void test(SimuData data) throws Exception {
        String basePath = config.getInPath() + File.separator + data.getInPath() + File.separator;
        ResultDto dto = new ResultDto(
                data.getInPath(),
                basePath + config.getTerrainFile(),
                basePath + config.getBuildingFile(),
                basePath + config.getWaterPath(),
                basePath + config.getFlowPath(),
                config.getInPath(),
                config.getOutPath(),
                data.getEpsg());
        LayerDto layer = new LayerDto(config.getVer(), data.getEpsg(), config.getSizes());
        process(dto, layer);
    }

    public void test(DataPo data) throws Exception {
        String basePath = config.getInPath() + File.separator + data.getInPath() + File.separator;
        ResultDto dto = new ResultDto(
                data.getInPath(),
                basePath + config.getTerrainFile(),
                basePath + config.getBuildingFile(),
                basePath + config.getWaterPath(),
                basePath + config.getFlowPath(),
                config.getInPath(),
                config.getOutPath(),
                data.getEpsg());
        LayerDto layer = new LayerDto(config.getVer(), data.getEpsg(), config.getSizes());
        process(dto, layer);
    }

    private void process(ResultDto dto, LayerDto layer) throws Exception {
        try {
            copeTerrain(dto, layer);
            //copeBuilding(dto, layer);
            List<BuildingDepthVo> buildings = copeWater(dto, layer);
            //copeFlow(dto, layer);
            copeLayerJson(dto, layer);
            //copeRainFallJson(dto, layer);
            //copeBuildingDepthJson(dto, buildings);
        } finally {
            File dir = new File(dto.getTemp());
            if (dir.exists()) {
                FileUtil.del(dir);
            }
        }
    }

    public void copeTerrain(ResultDto dto, LayerDto layer) {
        Dataset ds = null;
        try {
            // gdalconst，gdalconstConstants
            ds = gdal.Open(dto.getTerrainFile(), gdalconstConstants.GA_ReadOnly);
            if (null == ds || 0 == ds.getRasterCount()) return;

            setTerrainInfo(ds, layer);
            setWaterInfo(dto, layer);
            createTerrainPng(dto, ds, layer);
        } finally {
            if (null != ds) ds.delete();
        }
    }

    public void setTerrainInfo(Dataset ds, LayerDto layer) {
        Geometry minPoint = GdalHelper.getMinPoint(ds);
        Geometry maxPoint = GdalHelper.getMaxPoint(ds);
        double minx = ComHelper.getMinVal(minPoint.GetX(0), 10000000);
        double miny = ComHelper.getMinVal(minPoint.GetY(0), 10000000);
        double maxx = ComHelper.getMaxVal(maxPoint.GetX(0) + MAX_X_OFFSET, 10000000);
        double maxy = ComHelper.getMaxVal(maxPoint.GetY(0), 10000000);
        //layer.setExtension(new ExtensionDto(minx, miny, maxx, maxy, Double.MAX_VALUE, Double.MIN_VALUE));

        Band band = ds.GetRasterBand(1);
        double[] mm = new double[2];
        band.ComputeRasterMinMax(mm, 0);
        //layer.getTerrain().setHeight(getMinVal(mm[0], 1000), getMaxVal(mm[1], 1000));
        layer.setExtension(new ExtensionDto(minx, miny, maxx, maxy, mm[0], mm[1]));
    }

    public void createTerrainPng(ResultDto dto, Dataset ds, LayerDto layer) {
        String terrainPath = dto.getOutPath() + File.separator + "terrain";
        File f = new File(terrainPath);
        if (!f.exists() || !f.isDirectory()) f.mkdirs();

        for (int[] sizes : layer.getTerrain().getSize()) {
            String tif = dto.getTemp() + File.separator + "terrain_" + sizes[0] + "_" + sizes[1] + ".tif";
            ComHelper.Resample(ds, tif, sizes[0], sizes[1], layer);
            if (!new File(tif).exists()) continue;

            String png = terrainPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
            Terrain2Png(layer, tif, png, sizes[0], sizes[1]);
        }
    }

    public void Terrain2Png(LayerDto layer, String tif, String png, int width, int height) {
        Dataset ds = null;
        try {
            ds = gdal.Open(tif, gdalconstConstants.GA_ReadOnly);
            if (null == ds || 0 == ds.getRasterCount()) return;

            Band band = ds.GetRasterBand(1);
            float[] buffer = new float[width * height];
            //band.ReadRaster(0, 0, width, height, buffer, width, height, 0, 0);
            band.ReadRaster(0, 0, width, height, buffer);
            layer.getTerrain().getVals().put(width + "_" + height, buffer);

            BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
            double differ = layer.getExtension().getMaxHeight() - layer.getExtension().getMinHeight(), minHeight = layer.getExtension().getMinHeight();
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    int offset = x + y * width;
                    if (Float.isNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue;

                    int r = 0, g, b;
                    if (buffer[offset] - layer.getExtension().getMaxHeight() > 0) {
                        g = b = 255;
                    } else {
                        int val = (int) ((buffer[offset] - minHeight) / differ * 65535);
                        g = val / 256;
                        b = val % 256;
                    }

                    Color color = new Color(r, g, b, 127);
                    //graphic.drawImage(image, x, y, 1, 1, color, null);
                    image.setRGB(x, y, color.getRGB());
                }
            }
            ComHelper.savePng(image, png);
        } finally {
            if (null != ds) ds.delete();
        }
    }

    public void setWaterInfo(ResultDto dto, LayerDto layer) {
        List<String> files = getFiles(dto.getWaterPath(), ".tif");
        layer.getWaters().setFiles(files);
        if (null == files || files.size() == 0) return;

        setWaterData(layer, files);
        setWaterHeight(layer, files);
    }

    public List<BuildingDepthVo> copeWater(ResultDto dto, LayerDto layer) {
        List<String> files = layer.getWaters().getFiles();
        if (files.size() == 0 || files.size() != layer.getWaters().getData().size()) return null;

        processWaters(dto, files, layer);

        if (new File(dto.getBuildingFile()).exists()) {
            return processBuilding(dto, files, layer);
        }

        return null;
    }

    public List<String> getFiles(String path, String suffix) {
        List<String> files = new ArrayList<>();
        ComHelper.getFiles(files, new File(path), suffix);
        files.sort((a, b) -> a.compareToIgnoreCase(b));

        return files;
    }

    public void setWaterData(LayerDto layer, List<String> files) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        calendar.set(Calendar.MILLISECOND, 0);

        for (String file : files) {
            String fileName = ComHelper.getNameWithExt(file);
            int year = Integer.parseInt(fileName.substring(0, 4));
            int month = Integer.parseInt(fileName.substring(4, 6));
            int day = Integer.parseInt(fileName.substring(6, 8));
            int hour = Integer.parseInt(fileName.substring(8, 10));
            int minute = Integer.parseInt(fileName.substring(10, 12));
            int second = Integer.parseInt(fileName.substring(12, 14));

            calendar.set(Calendar.YEAR, year);
            calendar.set(Calendar.MONTH, month);
            calendar.set(Calendar.DAY_OF_MONTH, day);
            calendar.set(Calendar.HOUR_OF_DAY, hour);
            calendar.set(Calendar.MINUTE, minute);
            calendar.set(Calendar.SECOND, second);

            layer.getWaters().getData().add(calendar.getTime().getTime());
        }
        layer.getDuration().setStart(layer.getWaters().getData().get(0));
        layer.getDuration().setEnd(layer.getWaters().getData().get(layer.getWaters().getData().size() - 1));
    }

    public void setWaterHeight(LayerDto layer, List<String> files) {
        /*files.parallelStream().forEach(file -> {
            Dataset ds = null;
            try {
                ds = gdal.Open(file, gdalconstConstants.GA_ReadOnly);
                if (null == ds || 0 == ds.getRasterCount()) return;

                double[] mm = new double[2];
                ds.GetRasterBand(1).ComputeRasterMinMax(mm, 0);
                layer.getWaters().setHeight(mm[0], mm[1]);
            } finally {
                if (null != ds) ds.delete();
            }
        });*/

        int c = files.size(), step = files.size() / 10;
        if (step < 1) step = 1;
        for (int i = 0; i < c; i += step) {
            Dataset ds = null;
            try {
                ds = gdal.Open(files.get(i), gdalconstConstants.GA_ReadOnly);
                if (null == ds || 0 == ds.getRasterCount()) return;

                double[] mm = new double[2];
                ds.GetRasterBand(1).ComputeRasterMinMax(mm, 0);
                layer.getWaters().setHeight(mm[0], mm[1]);
            } finally {
                if (null != ds) ds.delete();
            }
        }

        layer.getExtension().setMaxHeight(layer.getExtension().getMaxHeight() + layer.getWaters().getMaxHeight() + 1);
        layer.getExtension().setMaxHeight(ComHelper.getMaxVal(layer.getExtension().getMaxHeight(), 1000000));
        layer.getExtension().setMinHeight(ComHelper.getMaxVal(layer.getExtension().getMinHeight(), 1000000));
        layer.getExtension().setDiffer();
    }

    public void processWaters(ResultDto dto, List<String> files, LayerDto layer) {
        for (int i = 0, c = files.size(); i < c; i++) {
            Dataset ds = null;
            try {
                ds = gdal.Open(files.get(i), gdalconstConstants.GA_ReadOnly);
                if (null == ds || 0 == ds.getRasterCount()) return;
                if (null == ds.GetSpatialRef()) ds.SetSpatialRef(dto.getSpatialReference());

                createWaterPng(dto, ds, layer, layer.getWaters().getData().get(i));
                //if (config.getCopyTif()) copyWaterTif(dto, ds, layer.getWaters().getData().get(i));
                ///createVectors(dto, ds, layer, layer.getWaters().getData().get(i));
            } finally {
                if (null != ds) ds.delete();
            }
        }
    }

    public void createWaterPng(ResultDto dto, Dataset ds, LayerDto layer, long ticks) {
        String waterPath = dto.getOutPath() + File.separator + "waters" + File.separator + ticks;
        File dir = new File(waterPath);
        if (!dir.exists() || !dir.isDirectory()) dir.mkdirs();

        for (int[] sizes : layer.getTerrain().getSize()) {
            String fileName = ComHelper.getNameWithExt(ds.GetDescription()) + "_" + sizes[0] + "_" + sizes[1];
            String tif = dto.getTemp() + File.separator + fileName + ".tif";
            ComHelper.Resample2(ds, tif, sizes[0], sizes[1], layer);
            if (!new File(tif).exists()) continue;

            String png = waterPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
            water2Png(dto, layer, tif, png, sizes[0], sizes[1]);
        }
    }

    public void water2Png(ResultDto dto, LayerDto layer, String tif, String png, int width, int height) {
        Dataset ds = null;
        try {
            ds = gdal.Open(tif, gdalconstConstants.GA_ReadOnly);
            if (null == ds || 0 == ds.getRasterCount()) return;

            Band band = ds.GetRasterBand(1);
            float[] buffer = new float[width * height];
            band.ReadRaster(0, 0, width, height, buffer);
            double[] transform = ds.GetGeoTransform();
            buffer = interpolateGrid(buffer, width);

            BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
            //double differ = layer.getWaters().getMaxHeight() - layer.getWaters().getMinHeight(), minHeight = layer.getWaters().getMinHeight();
            double differ = layer.getExtension().getDiffer(), maxHeight = layer.getExtension().getMaxHeight(), minHeight = layer.getExtension().getMinHeight();
            float[] ts = layer.getTerrain().getVals().get(width + "_" + height);
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {
                    int offset = x + y * width;
                    //if (Float.isNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue;
                    if (Float.isNaN(buffer[offset]) || buffer[offset] < MIN_VAL || Float.isNaN(ts[offset])) continue;

                    //double X = transform[0] + x * transform[1] + y * transform[2];
                    //double Y = transform[3] + x * transform[4] + y * transform[5];
                    //BuildingDto building = intersects(dto, X, Y);
                    //if (null != building) continue;

                    int r = 0, g, b;
                    if (buffer[offset] + ts[offset] > maxHeight) {
                        g = b = 255;
                    } else {
                        int val = (int) ((buffer[offset] + ts[offset] - minHeight) / differ * 65535);
                        //int val = (int) (buffer[offset] / differ * 65535);
                        g = val / 256;
                        b = val % 256;
                    }

                    Color color = new Color(r, g, b, 127);
                    image.setRGB(x, y, color.getRGB());
                }
            }
            ComHelper.savePng(image, png);
        } finally {
            if (null != ds) ds.delete();
        }
    }

    /**
     * 插值处理-四邻域
     */
    public float[] interpolateGrid(float[] buffer, int size) {
        float[] tempBuffer = new float[size * size];
        for (int i = 0; i < size; i++) {
            for (int j = 0; j < size; j++) {
                int index = i * size + j;
                float current = buffer[index];
                if (current == 0) {
                    float sum = 0;
                    int count = 0;
                    // 检查上邻
                    if (i > 0) {
                        float neighbor = buffer[(i - 1) * size + j];
                        if (neighbor > MIN_VAL) {
                            sum += neighbor;
                            count++;
                        }
                    }
                    // 检查下邻
                    if (i < size - 1) {
                        float neighbor = buffer[(i + 1) * size + j];
                        if (neighbor > MIN_VAL) {
                            sum += neighbor;
                            count++;
                        }
                    }
                    // 检查左邻
                    if (j > 0) {
                        float neighbor = buffer[i * size + (j - 1)];
                        if (neighbor > MIN_VAL) {
                            sum += neighbor;
                            count++;
                        }
                    }
                    // 检查右邻
                    if (j < size - 1) {
                        float neighbor = buffer[i * size + (j + 1)];
                        if (neighbor > MIN_VAL) {
                            sum += neighbor;
                            count++;
                        }
                    }
                    // 计算新值
                    if (count > 0) {
                        tempBuffer[index] = (sum / count) * 0.5f;
                    } else {
                        tempBuffer[index] = 0;
                    }
                } else {
                    tempBuffer[index] = current;
                }
            }
        }
        // 将临时数组复制回原数组
        //System.arraycopy(tempBuffer, 0, buffer, 0, tempBuffer.length);
        return tempBuffer;
    }

    public List<BuildingDepthVo> processBuilding(ResultDto dto, List<String> files, LayerDto layer) {
        List<BuildingDepthVo> list = new CopyOnWriteArrayList<>();
        for (int i = 0, c = files.size(); i < c; i++) {
            Dataset ds = null;
            try {
                ds = gdal.Open(files.get(i), gdalconstConstants.GA_ReadOnly);
                if (null == ds || 0 == ds.getRasterCount()) continue;
                if (null == ds.GetSpatialRef()) ds.SetSpatialRef(dto.getSpatialReference());

                copeBuildingDepth(dto, ds, layer.getWaters().getData().get(i), list);
            } finally {
                if (null != ds) ds.delete();
            }
        }

        return list;
    }

    public void copeBuildingDepth(ResultDto dto, Dataset ds, long ticks, List<BuildingDepthVo> list) {
        double[] transform = ds.GetGeoTransform();
        int xSize = ds.getRasterXSize(), ySize = ds.getRasterYSize();
        double minX = transform[0], pixelWidth = transform[1], maxY = transform[3], pixelHeight = Math.abs(transform[5]);

        for (BuildingDto building : dto.getBuildingList()) {
            Double val = getValue(ds, building, xSize, ySize, minX, maxY, pixelWidth, pixelHeight);
            list.add(new BuildingDepthVo(building.getId(), ticks, val));
        }
    }

    public Double getValue(Dataset ds, BuildingDto building, int xSize, int ySize, double minX, double maxY, double pixelWidth, double pixelHeight) {
        double[] env = new double[4];
        building.getGeom().GetEnvelope(env);

        int startX = (int) Math.floor((env[0] - minX) / pixelWidth);
        int endX = (int) Math.floor((env[1] - minX) / pixelWidth);
        int startY = (int) Math.floor((maxY - env[3]) / Math.abs(pixelHeight));
        int endY = (int) Math.floor((maxY - env[2]) / Math.abs(pixelHeight));
        if (startX < 0) startX = 0;
        if (startY < 0) startY = 0;
        if (endX > ds.getRasterXSize()) endX = ds.getRasterXSize();
        if (endY > ds.getRasterYSize()) endY = ds.getRasterYSize();
        if (endX - startX < 1 || endY - startY < 1) return null;

        int width = endX - startX;
        int height = endY - startY;
        double[] pixelValues = new double[width * height];
        ds.GetRasterBand(1).ReadRaster(startX, startY, width, height, pixelValues);

        Double val = Arrays.stream(pixelValues).max().getAsDouble();

        return ComHelper.isValid(val) ? val : null;
    }

    public void createVectors(ResultDto dto, Dataset ds, LayerDto layer, Long ticks) {
        String filePath = dto.getOutPath() + File.separator + "waters" + File.separator + ticks + File.separator + "polygonize.geojson";
        ShpHelper.polygonize2Geojson(ds, filePath);

        /*List<Geometry> geometries = getGeometries(filePath);
        if (CollectionUtils.isEmpty(geometries)) return;

        List<PondingPo> list = copePonding(dto, ds, layer, geometries);
        if (CollectionUtils.isEmpty(list)) return;

        try {
            filePath = dto.getOutPath() + File.separator + "waters" + File.separator + ticks + File.separator + "water.json";
            ComHelper.writeJson(filePath, JSON.toJSONString(list));
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
        }*/
    }

    public List<Geometry> getGeometries(String filePath) {
        if (!FileUtil.exist(filePath)) return null;

        Driver driver = null;
        DataSource dataSource = null;
        org.gdal.ogr.Layer layer = null;
        try {
            driver = ogr.GetDriverByName("GeoJSON");
            if (null == driver) return null;

            DataSource ds = driver.Open(filePath);
            if (null == ds) return null;

            layer = ds.GetLayer(0);
            List<Geometry> list = new ArrayList<>();
            for (long i = 0, d = layer.GetFeatureCount(); i < d; i++) {
                Feature f = layer.GetFeature(i);
                if (f.GetFieldAsDouble("val") < -999) continue;

                list.add(f.GetGeometryRef());
            }

            return list;
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
            return null;
        } finally {
            GdalHelper.delete(layer, dataSource, driver);
        }
    }

    public List<PondingPo> copePonding(ResultDto dto, Dataset ds, LayerDto layer, List<Geometry> geometries) {
        double[] transform = ds.GetGeoTransform();
        int xSize = ds.getRasterXSize(), ySize = ds.getRasterYSize();

        List<PondingPo> list = new ArrayList<>();
        for (Geometry geometry : geometries) {
            //List<PointDto> points = getValues(ds, geometry, transform, xSize, ySize);
            //if (CollectionUtils.isEmpty(points)) continue;

            //PointDto point = Collections.max(points);
            PointDto point = getValues(ds, geometry, transform, xSize, ySize);
            if (null == point) continue;

            list.add(new PondingPo(geometry, point));
        }

        return list;
    }

    public PointDto getValues(Dataset ds, Geometry g, double[] transform, int xSize, int ySize) {
        double[] env = new double[4];
        g.GetEnvelope(env);

        int startX = (int) Math.floor((env[0] - transform[0]) / transform[1]);
        int endX = (int) Math.floor((env[1] - transform[0]) / transform[1]);
        int startY = (int) Math.floor((transform[3] - env[3]) / Math.abs(transform[5]));
        int endY = (int) Math.floor((transform[3] - env[2]) / Math.abs(transform[5]));
        if (startX < 0) startX = 0;
        if (startY < 0) startY = 0;
        if (endX > ds.getRasterXSize()) endX = ds.getRasterXSize();
        if (endY > ds.getRasterYSize()) endY = ds.getRasterYSize();
        if (endX - startX < 1 || endY - startY < 1) return null;

        int width = endX - startX;
        int height = endY - startY;
        double[] pixelValues = new double[width * height];
        ds.GetRasterBand(1).ReadRaster(startX, startY, width, height, pixelValues);

        Double val = Arrays.stream(pixelValues).max().getAsDouble();

        return new PointDto(g.Centroid().GetX(), g.Centroid().GetY(), ComHelper.isValid(val) ? val : 0.0);
    }

    public void copeFlow(ResultDto dto, LayerDto layer) {
        List<String> files = getFiles(dto.getFlowPath(), ".tif");
        if (null == files || files.size() != layer.getWaters().getData().size()) return;

        for (int i = 0, c = files.size(); i < c; i++) {
            Dataset ds = null;
            try {
                ds = gdal.Open(files.get(i), gdalconstConstants.GA_ReadOnly);
                if (null == ds || 0 == ds.getRasterCount()) return;
                if (null == ds.GetSpatialRef()) ds.SetSpatialRef(dto.getSpatialReference());

                createFlowPng(dto, ds, layer, layer.getWaters().getData().get(i));
            } finally {
                if (null != ds) ds.delete();
            }
        }
    }

    public void createFlowPng(ResultDto dto, Dataset ds, LayerDto layer, long ticks) {
        String flowPath = dto.getOutPath() + File.separator + "flows" + File.separator + ticks;
        File dir = new File(flowPath);
        if (!dir.exists() || !dir.isDirectory()) dir.mkdirs();

        for (int[] sizes : layer.getTerrain().getSize()) {
            String name = ComHelper.getNameWithExt(ds.GetDescription()) + "_" + sizes[0] + "_" + sizes[1];
            String tif = dto.getTemp() + File.separator + name + ".tif";
            ComHelper.Resample(ds, tif, sizes[0], sizes[1], layer);
            if (!new File(tif).exists()) continue;

            String png = flowPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
            vxyTif2Png(layer, tif, png, sizes[0], sizes[1]);
        }
    }

    public void vxyTif2Png(LayerDto layer, String tif, String png, int width, int height) {
        Dataset ds = null;
        try {
            ds = gdal.Open(tif, gdalconstConstants.GA_ReadOnly);
            if (null == ds || 0 == ds.getRasterCount()) return;

            float[] vxBuffer = new float[width * height], vyBuffer = new float[width * height];
            ds.GetRasterBand(1).ReadRaster(0, 0, width, height, vxBuffer);
            ds.GetRasterBand(2).ReadRaster(0, 0, width, height, vyBuffer);

            createFlowPng(vxBuffer, vyBuffer, png, width, height);
        } finally {
            if (null != ds) ds.delete();
        }
    }

    public void createFlowPng(float[] vxBuffer, float[] vyBuffer, String png, int width, int height) {
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                int offset = x + y * width;
                float fx = ComHelper.getFloatValue(vxBuffer[offset]);
                float fy = ComHelper.getFloatValue(vyBuffer[offset]);
                if (Float.isNaN(fx) && Float.isNaN(fy) || (fx < MIN_VAL && fy < MIN_VAL)) continue;

                fx = Float.isNaN(fx) ? 0 : fx;
                fy = Float.isNaN(fy) ? 0 : fy;
                double dr = Math.sqrt(Math.pow(fx, 2) + Math.pow(fy, 2));

                int r = (int) (dr / 4 * 255);
                int g = (int) ((fx / dr * 0.5 + 0.5) * 255);
                int b = (int) ((fy / dr * 0.5 + 0.5) * 255);

                Color color = new Color(ComHelper.getSafeValue(r), ComHelper.getSafeValue(g), ComHelper.getSafeValue(b), 127);
                image.setRGB(x, y, color.getRGB());
            }
        }
        ComHelper.savePng(image, png);
    }

    public void copeLayerJson(ResultDto dto, LayerDto layer) throws IOException {
        layer.getWaters().setFiles(null);
        layer.getTerrain().setEpsg(null);
        layer.getExtension().setDiffer(null);

        String path = dto.getOutPath().replace(config.getOutPath() + File.separator, "");
        layer.setWaterUrl("/hls/w" + path + ".m3u8");
        layer.setFlowUrl("/hls/f" + path + ".m3u8");

        String json = JSON.toJSONString(layer);
        // String json = JSONUtil.toJsonPrettyStr(layer);
        String filePath = dto.getOutPath() + File.separator + "layer.json";

        ComHelper.writeJson(filePath, json);
    }
}