package com.se.simu.service;

import com.se.simu.domain.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * 内涝服务类
 *
 * @author WWW
 * @date   2024-07-16
 */
@Slf4j
@Service
public class WaterService {
    @Value("${sys.ver}")
    String ver;

    @Value("${sys.path.out}")
    String outPath;

    /**
     * 获取元数据信息
     */
    public byte[] getLayerJson(String serviceName) {
        try {
            String filePath = outPath + File.separator + serviceName + File.separator + "layer.json";

            File dat = new File(filePath);
            if (!dat.exists()) {
                return null;
            }

            byte[] bytes = new byte[(int) dat.length()];

            FileInputStream fs = new FileInputStream(filePath);
            fs.read(bytes);
            fs.close();

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

    /**
     * 获取地形高度图
     */
    public String getTerraMap(String serviceName, Integer width, Integer height) {
        return outPath + File.separator + serviceName + File.separator + "terrain" + File.separator + width + "_" + height + ".png";
    }

    /**
     * 获取水面高度图
     */
    public String getWaterMap(String serviceName, Integer width, Integer height, Long timestamp) {
        return outPath + File.separator + serviceName + File.separator + "waters" + File.separator + timestamp + File.separator + width + "_" + height + ".png";
    }

    /**
     * 获取水流向流速图
     */
    public String getFlowMap(String serviceName, Integer width, Integer height, Long timestamp) {
        return outPath + File.separator + serviceName + File.separator + "flows" + File.separator + timestamp + File.separator + width + "_" + height + ".png";
    }

    /**
     * 获取图层 *
     */
    public Layer getLayer(String serviceName) {
        Layer layer = new Layer();
        layer.setVersion(ver);
        layer.setDuration(new Duration(1719812810225L, 1719812810225L));
        layer.setExtension(new Extension(2.11062743358, 0.53812160220, 2.11070827834, 0.53819799453, 1.151, 38.83));

        List<Integer[]> sizes = new ArrayList<>();
        sizes.add(new Integer[]{64, 64});
        sizes.add(new Integer[]{128, 128});
        sizes.add(new Integer[]{256, 256});
        sizes.add(new Integer[]{512, 512});
        sizes.add(new Integer[]{1024, 1024});
        sizes.add(new Integer[]{2048, 2048});
        layer.setTerrain(new Terrain(sizes));

        List<Long> data = new ArrayList<>(Arrays.asList(1719812812225L, 1719812812225L, 1719812812225L, 1719812812225L, 1719812812225L, 1719812812225L));
        layer.setWaters(new Water(data));

        return layer;
    }
}