import java.io.*;
import java.util.HashSet;
import java.util.Set;

public class MCSourceCopy {

    private static File file(String path) {
        return new File(path);
    }

    public static void main(String[] args) {
        final String classFilePath = "C:\\Users\\nghik\\OneDrive\\Máy tính\\New folder (2)\\class.txt";
        Set<String> list = readList(file(classFilePath));

        System.out.println("List result:");
        for (String clazz : list) {
            System.out.println(clazz);
        }
        System.out.println();

        final String sourceFolderPath = "D:\\Workspace\\Code\\Tuinity\\Paper\\src\\main\\java";
        final String directionFolderPath = "C:\\Users\\nghik\\OneDrive\\Máy tính\\New folder (2)";

        System.out.println("Copying...");
        copyFolder(file(sourceFolderPath)
                , file(directionFolderPath)
                , list);
        System.out.println("Done.");
    }

    private static final String NMS = "v1_16_R3";

    public static void copyFolder(File source, File to, Set<String> classList) {
        for (String clazz : classList) {
            copy(new File(source, clazz), new File(to, replace(clazz)));
        }
    }

    private static Set<String> readList(File listFile) {
        Set<String> list = new HashSet<>();
        try (BufferedReader reader = new BufferedReader(new FileReader(listFile))) {

            String line;
            while ((line = reader.readLine()) != null) {

                list.add(line.replace(".", "\\")
                    .replace("\\java", ".java"));

            }

        } catch (IOException e) {
            e.printStackTrace();
        }
        return list;
    }

    private static void copy(File source, File to) {
        if (!source.exists()) {
            System.out.println("Cannot find " + source.getPath());
            return;
        }

        File toFolder = to.getParentFile();
        if (!toFolder.exists()) {
            toFolder.mkdirs();
            System.out.println("Created folder " + toFolder);
        }

        try (BufferedWriter writer = new BufferedWriter(new FileWriter(to));
             BufferedReader reader = new BufferedReader(new FileReader(source))) {

            String line;
            while ((line = reader.readLine()) != null) {

                writer.write(replace(line));
                writer.newLine();

            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static String replace(String str) {
        return str
                .replace("net\\minecraft\\server", "net\\minecraft\\server\\" + NMS)
                .replace("org\\bukkit\\craftbukkit", "org\\bukkit\\craftbukkit\\" + NMS)
                .replace("net.minecraft.server", "net.minecraft.server." + NMS)
                .replace("org.bukkit.craftbukkit", "org.bukkit.craftbukkit." + NMS);
    }

}