package com.volmit.iris;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;

import org.bstats.bukkit.Metrics;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.World.Environment;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.event.HandlerList;
import org.bukkit.generator.ChunkGenerator;
import org.bukkit.plugin.Plugin;

import com.volmit.iris.command.CommandIris;
import com.volmit.iris.command.PermissionIris;
import com.volmit.iris.gen.IrisTerrainProvider;
import com.volmit.iris.gen.nms.INMS;
import com.volmit.iris.gen.provisions.ProvisionBukkit;
import com.volmit.iris.gen.scaffold.IrisGenConfiguration;
import com.volmit.iris.gen.scaffold.TerrainTarget;
import com.volmit.iris.link.MultiverseCoreLink;
import com.volmit.iris.link.MythicMobsLink;
import com.volmit.iris.manager.EditManager;
import com.volmit.iris.manager.IrisBoardManager;
import com.volmit.iris.manager.IrisDataManager;
import com.volmit.iris.manager.IrisHotloadManager;
import com.volmit.iris.manager.ProjectManager;
import com.volmit.iris.manager.StructureManager;
import com.volmit.iris.manager.WandManager;
import com.volmit.iris.object.IrisCompat;
import com.volmit.iris.util.C;
import com.volmit.iris.util.Form;
import com.volmit.iris.util.GroupedExecutor;
import com.volmit.iris.util.IO;
import com.volmit.iris.util.IrisLock;
import com.volmit.iris.util.J;
import com.volmit.iris.util.KList;
import com.volmit.iris.util.M;
import com.volmit.iris.util.MortarPlugin;
import com.volmit.iris.util.NastyRunnable;
import com.volmit.iris.util.Permission;
import com.volmit.iris.util.Queue;
import com.volmit.iris.util.RNG;
import com.volmit.iris.util.ShurikenQueue;

import io.papermc.lib.PaperLib;

public class Iris extends MortarPlugin
{
	public static KList<GroupedExecutor> executors = new KList<>();
	public static Iris instance;
	public static IrisDataManager globaldata;
	public static ProjectManager proj;
	public static IrisHotloadManager hotloader;
	public static WandManager wand;
	public static StructureManager struct;
	public static EditManager edit;
	public static IrisBoardManager board;
	public static MultiverseCoreLink linkMultiverseCore;
	public static MythicMobsLink linkMythicMobs;
	private static IrisLock lock = new IrisLock("Iris");
	private static final Queue<Runnable> syncJobs = new ShurikenQueue<>();
	public static boolean customModels = doesSupportCustomModels();
	public static boolean awareEntities = doesSupportAwareness();
	public static boolean biome3d = doesSupport3DBiomes();
	public static boolean lowMemoryMode = false;
	public static IrisCompat compat;

	@Permission
	public static PermissionIris perm;

	@com.volmit.iris.util.Command
	public CommandIris commandIris;

	public Iris()
	{
		INMS.get();
		IO.delete(new File("iris"));
		lowMemoryMode = Runtime.getRuntime().maxMemory() < 4000000000L; // 4 * 1000 * 1000 * 1000 // 4gb
	}

	public static int getThreadCount()
	{
		int tc = IrisSettings.get().forceThreadCount;

		if(tc <= 0)
		{
			int p = Runtime.getRuntime().availableProcessors();

			return p > 16 ? 16 : p < 4 ? 4 : p;
		}

		return tc;
	}

	public ProvisionBukkit createProvisionBukkit(IrisGenConfiguration config)
	{
		return new ProvisionBukkit(createIrisProvider(config));
	}

	public IrisTerrainProvider createIrisProvider(IrisGenConfiguration config)
	{
		return new IrisTerrainProvider(config);
	}

	private static boolean doesSupport3DBiomes()
	{
		int v = Integer.parseInt(Bukkit.getBukkitVersion().split("\\Q-\\E")[0].split("\\Q.\\E")[1]);

		return v >= 15;
	}

	private static boolean doesSupportCustomModels()
	{
		int v = Integer.parseInt(Bukkit.getBukkitVersion().split("\\Q-\\E")[0].split("\\Q.\\E")[1]);

		return v >= 14;
	}

	private static boolean doesSupportAwareness()
	{
		int v = Integer.parseInt(Bukkit.getBukkitVersion().split("\\Q-\\E")[0].split("\\Q.\\E")[1]);

		return v >= 15;
	}

	@Override
	public void start()
	{

	}

	@Override
	public void stop()
	{

	}

	@Override
	public String getTag(String subTag)
	{
		return C.BOLD + "" + C.DARK_GRAY + "[" + C.BOLD + "" + C.GREEN + "Iris" + C.BOLD + C.DARK_GRAY + "]" + C.RESET + "" + C.GRAY + ": ";
	}

	public void onEnable()
	{
		instance = this;
		compat = IrisCompat.configured(getDataFile("compat.json"));
		lock = new IrisLock("Iris");
		proj = new ProjectManager();
		hotloader = new IrisHotloadManager();
		globaldata = new IrisDataManager(getDataFolder());
		wand = new WandManager();
		struct = new StructureManager();
		board = new IrisBoardManager();
		linkMultiverseCore = new MultiverseCoreLink();
		linkMythicMobs = new MythicMobsLink();
		edit = new EditManager();
		J.a(() -> IO.delete(getTemp()));
		J.a(this::bstats);
		J.s(this::splash, 20);
		J.sr(this::tickQueue, 0);
		PaperLib.suggestPaper(this);
		super.onEnable();
	}

	public static void sq(Runnable r)
	{
		synchronized(syncJobs)
		{
			syncJobs.queue(r);
		}
	}

	private void tickQueue()
	{
		synchronized(Iris.syncJobs)
		{
			if(!Iris.syncJobs.hasNext())
			{
				return;
			}

			long ms = M.ms();

			while(Iris.syncJobs.hasNext() && M.ms() - ms < 25)
			{
				try
				{
					Iris.syncJobs.next().run();
				}

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

	private void bstats()
	{
		new Metrics(this, 8757);
	}

	public static File getTemp()
	{
		return instance.getDataFolder("cache", "temp");
	}

	public void onDisable()
	{
		if(IrisSettings.get().isStudio())
		{
			proj.close();

			for(World i : Bukkit.getWorlds())
			{
				if(i.getGenerator() instanceof ProvisionBukkit)
				{
					((IrisTerrainProvider) ((ProvisionBukkit) i.getGenerator()).getProvider()).close();
				}
			}

			for(GroupedExecutor i : executors)
			{
				i.close();
			}
		}

		executors.clear();
		board.disable();
		Bukkit.getScheduler().cancelTasks(this);
		HandlerList.unregisterAll((Plugin) this);
		super.onDisable();
	}

	@Override
	public boolean onCommand(CommandSender sender, Command command, String label, String[] args)
	{
		return super.onCommand(sender, command, label, args);
	}

	public void imsg(CommandSender s, String msg)
	{
		s.sendMessage(C.GREEN + "[" + C.DARK_GRAY + "Iris" + C.GREEN + "]" + C.GRAY + ": " + msg);
	}

	@Override
	public ChunkGenerator getDefaultWorldGenerator(String worldName, String id)
	{
		// @NoArgsConstructor
		return createProvisionBukkit(IrisGenConfiguration.builder().threads(getThreadCount()).target(TerrainTarget.builder().environment(Environment.NORMAL).folder(new File(worldName)).name(worldName).seed(worldName.hashCode()).build()).build());
		//@done
	}

	public static void msg(String string)
	{
		lock.lock();
		if(instance == null)
		{
			System.out.println("[Iris]: " + string);
			lock.unlock();
			return;
		}

		String msg = C.GREEN + "[Iris]: " + C.GRAY + string;
		Bukkit.getConsoleSender().sendMessage(msg);
		lock.unlock();
	}

	public static File getCached(String name, String url)
	{
		String h = IO.hash(name + "@" + url);
		File f = Iris.instance.getDataFile("cache", h.substring(0, 2), h.substring(3, 5), h);

		if(!f.exists())
		{
			try(BufferedInputStream in = new BufferedInputStream(new URL(url).openStream()); FileOutputStream fileOutputStream = new FileOutputStream(f))
			{
				byte[] dataBuffer = new byte[1024];
				int bytesRead;
				while((bytesRead = in.read(dataBuffer, 0, 1024)) != -1)
				{
					fileOutputStream.write(dataBuffer, 0, bytesRead);
					Iris.verbose("Aquiring " + name);
				}
			}

			catch(IOException ignored)
			{

			}
		}

		return f.exists() ? f : null;
	}

	public static String getNonCached(String name, String url)
	{
		String h = IO.hash(name + "*" + url);
		File f = Iris.instance.getDataFile("cache", h.substring(0, 2), h.substring(3, 5), h);

		try(BufferedInputStream in = new BufferedInputStream(new URL(url).openStream()); FileOutputStream fileOutputStream = new FileOutputStream(f))
		{
			byte[] dataBuffer = new byte[1024];
			int bytesRead;
			while((bytesRead = in.read(dataBuffer, 0, 1024)) != -1)
			{
				fileOutputStream.write(dataBuffer, 0, bytesRead);
			}
		}

		catch(IOException ignored)
		{

		}

		try
		{
			return IO.readAll(f);
		}

		catch(IOException ignored)
		{

		}

		return "";
	}

	public static File getNonCachedFile(String name, String url)
	{
		String h = IO.hash(name + "*" + url);
		File f = Iris.instance.getDataFile("cache", h.substring(0, 2), h.substring(3, 5), h);

		try(BufferedInputStream in = new BufferedInputStream(new URL(url).openStream()); FileOutputStream fileOutputStream = new FileOutputStream(f))
		{
			byte[] dataBuffer = new byte[1024];
			int bytesRead;
			while((bytesRead = in.read(dataBuffer, 0, 1024)) != -1)
			{
				fileOutputStream.write(dataBuffer, 0, bytesRead);
			}
		}

		catch(IOException ignored)
		{

		}

		return f;
	}

	public static void warn(String string)
	{
		msg(C.YELLOW + string);
	}

	public static void error(String string)
	{
		msg(C.RED + string);
	}

	public static void verbose(String string)
	{
		if(IrisSettings.get().verbose)
		{
			msg(C.GRAY + string);
		}
	}

	public static void success(String string)
	{
		msg(C.GREEN + string);
	}

	public static void info(String string)
	{
		msg(C.WHITE + string);
	}

	public void hit(long hits2)
	{
		board.hits.put(hits2);
	}

	public void splash()
	{
		// @NoArgsConstructor
		String padd = Form.repeat(" ", 8);
		String padd2 = Form.repeat(" ", 4);
		String[] info = {"", "", "", "", "", padd2 + C.GREEN + " Iris", padd2 + C.GRAY + " by " + C.randomColor() + "V" + C.randomColor() + "o" + C.randomColor() + "l" + C.randomColor() + "m" + C.randomColor() + "i" + C.randomColor() + "t" + C.randomColor() + "S" + C.randomColor() + "o" + C.randomColor() + "f" + C.randomColor() + "t" + C.randomColor() + "w" + C.randomColor() + "a" + C.randomColor() + "r" + C.randomColor() + "e", padd2 + C.GRAY + " v" + getDescription().getVersion(),
		};
		String[] splash = {padd + C.GRAY + "   @@@@@@@@@@@@@@" + C.DARK_GRAY + "@@@", padd + C.GRAY + " @@&&&&&&&&&" + C.DARK_GRAY + "&&&&&&" + C.GREEN + "   .(((()))).                     ", padd + C.GRAY + "@@@&&&&&&&&" + C.DARK_GRAY + "&&&&&" + C.GREEN + "  .((((((())))))).                  ", padd + C.GRAY + "@@@&&&&&" + C.DARK_GRAY + "&&&&&&&" + C.GREEN + "  ((((((((()))))))))               " + C.GRAY + " @", padd + C.GRAY + "@@@&&&&" + C.DARK_GRAY + "@@@@@&" + C.GREEN + "    ((((((((-)))))))))              " + C.GRAY + " @@", padd + C.GRAY + "@@@&&" + C.GREEN + "            ((((((({ }))))))))           " + C.GRAY + " &&@@@", padd + C.GRAY + "@@" + C.GREEN + "               ((((((((-)))))))))    " + C.DARK_GRAY + "&@@@@@" + C.GRAY + "&&&&@@@", padd + C.GRAY + "@" + C.GREEN + "                ((((((((()))))))))  " + C.DARK_GRAY + "&&&&&" + C.GRAY + "&&&&&&&@@@", padd + C.GRAY + "" + C.GREEN + "                  '((((((()))))))'  " + C.DARK_GRAY + "&&&&&" + C.GRAY + "&&&&&&&&@@@", padd + C.GRAY + "" + C.GREEN + "                     '(((())))'   " + C.DARK_GRAY + "&&&&&&&&" + C.GRAY + "&&&&&&&@@", padd + C.GRAY + "                               " + C.DARK_GRAY + "@@@" + C.GRAY + "@@@@@@@@@@@@@@"
		};
		//@done
		Iris.info(Bukkit.getVersion());
		Iris.info(Bukkit.getBukkitVersion() + "   bk");
		for(int i = 0; i < info.length; i++)
		{
			splash[i] += info[i];
		}

		Iris.info("\n\n " + new KList<>(splash).toString("\n") + "\n");

		if(lowMemoryMode)
		{
			Iris.verbose("* Low Memory mode Activated! For better performance, allocate 4gb or more to this server.");
		}

		if(!biome3d)
		{
			Iris.verbose("* This version of minecraft does not support 3D biomes (1.15 and up). Iris will generate as normal, but biome colors will not vary underground & in the sky.");
		}

		if(!customModels)
		{
			Iris.verbose("* This version of minecraft does not support custom model data in loot items (1.14 and up). Iris will generate as normal, but loot will not have custom models.");
		}

		if(!doesSupportAwareness())
		{
			Iris.verbose("* This version of minecraft does not support entity awareness.");
		}
	}

	@SuppressWarnings("deprecation")
	public static void later(NastyRunnable object)
	{
		Bukkit.getScheduler().scheduleAsyncDelayedTask(instance, () ->
		{
			try
			{
				object.run();
			}

			catch(Throwable e)
			{
				e.printStackTrace();
			}
		}, RNG.r.i(100, 1200));
	}

	public static int jobCount()
	{
		return syncJobs.size();
	}

	public static void clearQueues()
	{
		synchronized(syncJobs)
		{
			syncJobs.clear();
		}
	}
}