package ninja.bytecode.iris;

import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;
import java.util.function.Function;

import org.bukkit.Bukkit;
import org.bukkit.Chunk;
import org.bukkit.GameMode;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.WorldCreator;
import org.bukkit.block.Biome;
import org.bukkit.entity.Player;
import org.bukkit.event.HandlerList;
import org.bukkit.event.Listener;
import org.bukkit.generator.ChunkGenerator;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.Vector;

import ninja.bytecode.iris.generator.IrisGenerator;
import ninja.bytecode.iris.schematic.Schematic;
import ninja.bytecode.iris.schematic.SchematicGroup;
import ninja.bytecode.iris.spec.IrisBiome;
import ninja.bytecode.iris.spec.IrisDimension;
import ninja.bytecode.iris.spec.IrisPack;
import ninja.bytecode.iris.util.Direction;
import ninja.bytecode.shuriken.bench.Profiler;
import ninja.bytecode.shuriken.collections.GMap;
import ninja.bytecode.shuriken.collections.GSet;
import ninja.bytecode.shuriken.execution.TaskExecutor;
import ninja.bytecode.shuriken.io.IO;
import ninja.bytecode.shuriken.json.JSONException;
import ninja.bytecode.shuriken.json.JSONObject;
import ninja.bytecode.shuriken.logging.L;

public class Iris extends JavaPlugin implements Listener
{
	public static GSet<Chunk> refresh = new GSet<>();
	public static Profiler profiler;
	public static TaskExecutor genPool;
	public static IrisGenerator gen;
	public static Settings settings;
	public static Iris instance;
	public static GMap<String, GMap<String, Function<Vector, Double>>> values;
	public static GMap<String, IrisDimension> dimensions;
	public static GMap<String, IrisBiome> biomes;
	public static GMap<String, SchematicGroup> schematics;

	public void onEnable()
	{
		Direction.calculatePermutations();
		dimensions = new GMap<>();
		biomes = new GMap<>();
		schematics = new GMap<>();
		profiler = new Profiler(512);
		values = new GMap<>();
		instance = this;
		settings = new Settings();
		loadContent();
		gen = new IrisGenerator();
		genPool = new TaskExecutor(getTC(), settings.performance.threadPriority, "Iris Generator");
		getServer().getPluginManager().registerEvents((Listener) this, this);
		getCommand("iris").setExecutor(new CommandIris());
		getCommand("ish").setExecutor(new CommandIsh());
		new WandManager();
		
		// Debug world regens
		
		if(settings.performance.loadonstart)
		{
			GSet<String> ws = new GSet<>();

			World w = createIrisWorld();
			for(Player i : Bukkit.getOnlinePlayers())
			{
				Location m = i.getLocation();
				ws.add(i.getWorld().getName());
				i.teleport(new Location(w, m.getX(), m.getY(), m.getZ(), m.getYaw(), m.getPitch()));
				i.setFlying(true);
				i.setGameMode(GameMode.SPECTATOR);
			}

			for(String i : ws)
			{
				Bukkit.unloadWorld(i, false);
			}
		}
	}

	private void loadContent()
	{
		L.i("Loading Content");
		
		try
		{
			IrisPack master = new IrisPack(loadJSON("pack/manifest.json"));
			master.load();
		}
		
		catch(Throwable e)
		{
			e.printStackTrace();
		}

		L.i("Dimensions: " + dimensions.size());
		L.i("Biomes: " + biomes.size());
		L.i("Schematic Groups: " + schematics.size());
		L.flush();
	}

	private int getTC()
	{
		switch(settings.performance.performanceMode)
		{
			case HALF_CPU:
				return Math.max(Runtime.getRuntime().availableProcessors() / 2, 1);
			case MATCH_CPU:
				return Runtime.getRuntime().availableProcessors();
			case SINGLE_THREADED:
				return 1;
			case UNLIMITED:
				return -1;
			case EXPLICIT:
				return settings.performance.threadCount;
			default:
				break;
		}

		return Math.max(Runtime.getRuntime().availableProcessors() / 2, 1);
	}

	public void onDisable()
	{
		genPool.close();
		HandlerList.unregisterAll((Plugin) this);
	}

	@Override
	public ChunkGenerator getDefaultWorldGenerator(String worldName, String id)
	{
		return new IrisGenerator();
	}

	public World createIrisWorld()
	{
		World ww = Bukkit.createWorld(new WorldCreator("iris-worlds/" + UUID.randomUUID().toString()).generator(new IrisGenerator()).seed(5944323));
		ww.setSpawnFlags(false, false);
		ww.setAutoSave(false);
		ww.setKeepSpawnInMemory(false);
		ww.setSpawnLocation(0, 256, 0);
		return ww;
	}

	public static void v(String w, String t, Function<Vector, Double> d)
	{
		if(!values.containsKey(w))
		{
			values.put(w, new GMap<>());
		}

		values.get(w).put(t, d);
	}
	
	public static IrisDimension loadDimension(String s) throws JSONException, IOException
	{
		L.i("Loading Iris Dimension " + s);
		return new IrisDimension(loadJSON("pack/dimensions/" + s + ".json"));
	}
	
	public static IrisBiome loadBiome(String s) throws JSONException, IOException
	{
		L.i("Loading Iris Biome " + s);
		return new IrisBiome(loadJSON("pack/biomes/" + s + ".json"));
	}
	
	public static Schematic loadSchematic(String s) throws IOException
	{
		L.i("Loading Iris Object " + s);
		return Schematic.load(loadResource("pack/objects/" + s + ".ish"));
	}
	
	public static JSONObject loadJSON(String s) throws JSONException, IOException
	{
		return new JSONObject(IO.readAll(loadResource(s)));
	}

	public static InputStream loadResource(String string)
	{
		L.v("Loading Resource: " + "Iris.jar/" + string);
		return Iris.class.getResourceAsStream("/" + string);
	}
}