package de.promolitor.copymultiplayerworld;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.compress.utils.IOUtils;
import org.apache.commons.io.FileUtils;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.block.Block;
import net.minecraft.block.BlockBeacon;
import net.minecraft.block.BlockBrewingStand;
import net.minecraft.block.BlockChest;
import net.minecraft.block.BlockDispenser;
import net.minecraft.block.BlockFurnace;
import net.minecraft.block.BlockHopper;
import net.minecraft.block.BlockNote;
import net.minecraft.client.ClientBrandRetriever;
import net.minecraft.client.Minecraft;
import net.minecraft.client.entity.EntityClientPlayerMP;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.multiplayer.ChunkProviderClient;
import net.minecraft.client.multiplayer.ServerData;
import net.minecraft.client.multiplayer.WorldClient;
import net.minecraft.client.resources.I18n;
import net.minecraft.crash.CrashReport;
import net.minecraft.crash.CrashReportCategory;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagDouble;
import net.minecraft.nbt.NBTTagFloat;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.network.NetworkManager;
import net.minecraft.realms.RealmsSharedConstants;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityBeacon;
import net.minecraft.tileentity.TileEntityBrewingStand;
import net.minecraft.tileentity.TileEntityChest;
import net.minecraft.tileentity.TileEntityDispenser;
import net.minecraft.tileentity.TileEntityFurnace;
import net.minecraft.tileentity.TileEntityHopper;
import net.minecraft.tileentity.TileEntityNote;
import net.minecraft.util.IChatComponent;
import net.minecraft.util.LongHashMap;
import net.minecraft.util.ReportedException;
import net.minecraft.world.ChunkPosition;
import net.minecraft.world.MinecraftException;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.storage.AnvilSaveConverter;
import net.minecraft.world.chunk.storage.IChunkLoader;
import net.minecraft.world.chunk.storage.RegionFile;
import net.minecraft.world.chunk.storage.RegionFileCache;
import net.minecraft.world.storage.MapData;
import net.minecraft.world.storage.SaveHandler;
import net.minecraft.world.storage.ThreadedFileIOBase;
import scala.actors.threadpool.Arrays;
import net.minecraft.client.Minecraft;
import net.minecraft.client.multiplayer.ChunkProviderClient;
import net.minecraft.util.LongHashMap;
import net.minecraft.world.chunk.Chunk;

public class Download {

    private Minecraft mc;

    public Download() {
        Minecraft mc = Minecraft.getMinecraft();
    }

    @SideOnly(Side.SERVER)
    public static byte[] runDownload(int[] rId) {
        InputStream in = null;
        byte[] bytes = null;
        try {
            in = new FileInputStream("/world/region/r." + rId[0] + "." + rId[1] + ".mca");
            bytes = IOUtils.toByteArray(in);

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return bytes;

    }

    @SideOnly(Side.CLIENT)
    public static void getMCAFiles(int diameter, String saveName) {
        Minecraft mc = Minecraft.getMinecraft();
        int currentChunkX = mc.thePlayer.chunkCoordX;
        int currentChunkZ = mc.thePlayer.chunkCoordZ;
        System.out.println("Standing in Chunk: x:" + currentChunkX + " / y:" + currentChunkZ);
        ArrayList<int[]> regionIds = new ArrayList<int[]>();

        for (int x = -2; x < 5; x += 4) {
            for (int z = -2; z < 5; z += 4) {
                int regionX = (currentChunkX + x) >> 5;
                int regionZ = (currentChunkZ + z) >> 5;
                int[] region = { regionX, regionZ };
                boolean isNotAddedYet = true;
                for (int[] rIds : regionIds) {
                    if (areEqual(rIds, region)) {
                        isNotAddedYet = false;
                    }

                }
                if (isNotAddedYet) {
                    regionIds.add(region);
                }

            }

        }
        for (int[] rIds : regionIds) {
            System.out.println(Arrays.toString(rIds));
        }
        String saveFolderPath = "/saves/" + saveName;
        File directory = new File(saveFolderPath);
        if (!directory.exists()) {
            System.out.println("Folder Creation Success? " + directory.mkdirs());
        }

        for (int[] rIds : regionIds) {
            try {

                byte[] download = runDownload(rIds);
                FileUtils.writeByteArrayToFile(new File(saveFolderPath + "/r." + rIds[0] + "." + rIds[1] + ".mca"),
                        download);

            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }

    public static boolean areEqual(int[] array1, int[] array2) {
        boolean equal = false;
        if (array1.length == array2.length) {
            for (int i = 0; i < array1.length; i++) {
                if (array1[i] == array2[i]) {
                    equal = true;
                } else {
                    equal = false;
                }
            }
        }
        return equal;
    }

}