package com.fdkankan.fusion.common.util;

import java.io.*;
import java.math.BigDecimal;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.List;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import static cn.hutool.core.util.ClassUtil.getClassLoader;

public class FileWriterUtil {

    public static void writerJson(String tagPath,String fileName,String msg){
        try {
            File file = new File(tagPath);
            if(!file.exists()){
                file.mkdirs();
            }
            FileWriter fw = new FileWriter(tagPath +File.separator +fileName);
            fw.write(msg);
            fw.flush();
            fw.close();
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    public static  String readFile(String file) throws Exception {
        BufferedReader reader = new BufferedReader(new FileReader(file));
        String line = null;
        StringBuilder stringBuilder = new StringBuilder();
        String ls = System.getProperty("line.separator");
        try {
            while((line = reader.readLine()) != null) {
                stringBuilder.append(line);
                stringBuilder.append(ls);
            }
            return stringBuilder.toString();
        } finally {
            reader.close();
        }
    }

    public static void streamToFile(String fileName,String newFilePath){
        InputStream stream = getClassLoader().getResourceAsStream(fileName);
        try {
            assert stream != null;
            java.nio.file.Files.copy(
                    stream,
                    Paths.get(newFilePath),
                    new StandardCopyOption[]{StandardCopyOption.REPLACE_EXISTING});
        }catch (Exception e){
            e.printStackTrace();
        }
    }


    public static String setFileSize(Long length) {
        BigDecimal decimal = new BigDecimal(length);
        BigDecimal size = new BigDecimal(1024);
        if(length >= 1024 * 1024 ){
            return decimal.divide(size.multiply(size)).setScale(2,BigDecimal.ROUND_HALF_UP).toString() + "MB";
        }

        return decimal.divide(size).setScale(2,BigDecimal.ROUND_HALF_UP).toString() +"KB";
    }

    public static void getCanRunList(List<File> fileList,File objPathFile) {
        File[] files = objPathFile.listFiles();
        for (File file1 : files) {
            if(file1.isFile()){
                if(file1.getName().endsWith(".obj") || file1.getName().endsWith(".las") || file1.getName().endsWith(".ply")
                || file1.getName().endsWith(".osgb") || file1.getName().endsWith(".b3dm") || file1.getName().endsWith(".laz")){
                    fileList.add(file1);
                }
            }else {
                getCanRunList(fileList,file1);
            }
        }
    }

    public static String checkB3dmTileset(File objPathFile) {
        File[] files = objPathFile.listFiles();
        if(files == null || files.length<=0){
            return null;
        }
        for (File file : files) {
            if(file.isFile()){
                if(file.getName().endsWith(".json")){
                    return file.getPath();
                }
            }

        }
        return null;
    }

    public static boolean isChinese(String str) {
        String regEx = "[\\u4e00-\\u9fa5]+";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(str);
        return m.find();
    }
}