package com.wimbli.WorldBorder;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.bukkit.Bukkit;
import org.bukkit.plugin.Plugin;
import org.bukkit.World;

import org.dynmap.DynmapAPI;
import org.dynmap.markers.AreaMarker;
import org.dynmap.markers.CircleMarker;
import org.dynmap.markers.MarkerAPI;
import org.dynmap.markers.MarkerSet;


public class DynMapFeatures
{
	private static DynmapAPI api;
	private static MarkerAPI markApi;
	private static MarkerSet markSet;
	private static int lineWeight = 3;
	private static double lineOpacity = 1.0;
	private static int lineColor = 0xFF0000;

	// Whether re-rendering functionality is available
	public static boolean renderEnabled()
	{
		return api != null;
	}

	// Whether circular border markers are available
	public static boolean borderEnabled()
	{
		return markApi != null;
	}

	public static void setup()
	{
		Plugin test = Bukkit.getServer().getPluginManager().getPlugin("dynmap");
		if (test == null || !test.isEnabled()) return;

		api = (DynmapAPI)test;

		// make sure DynMap version is new enough to include circular markers
		try
		{
			Class.forName("org.dynmap.markers.CircleMarker");

			// for version 0.35 of DynMap, CircleMarkers had just been introduced and were bugged (center position always 0,0)
			if (api.getDynmapVersion().startsWith("0.35-"))
				throw new ClassNotFoundException();
		}
		catch (ClassNotFoundException ex)
		{
			Config.logConfig("DynMap is available, but border display is currently disabled: you need DynMap v0.36 or newer.");
			return;
		}
		catch (NullPointerException ex)
		{
			Config.logConfig("DynMap is present, but an NPE (type 1) was encountered while trying to integrate. Border display disabled.");
			return;
		}

		try
		{
			markApi = api.getMarkerAPI();
			if (markApi == null) return;
		}
		catch (NullPointerException ex)
		{
			Config.logConfig("DynMap is present, but an NPE (type 2) was encountered while trying to integrate. Border display disabled.");
			return;
		}

		// go ahead and show borders for all worlds
		showAllBorders();

		Config.logConfig("Successfully hooked into DynMap for the ability to display borders.");
	}


	/*
	 * Re-rendering methods, used for updating trimmed chunks to show them as gone
	 * Sadly, not currently working. Might not even be possible to make it work.
	 */

	public static void renderRegion(String worldName, CoordXZ coord)
	{
		if (!renderEnabled()) return;

		World world = Bukkit.getWorld(worldName);
		int y = (world != null) ? world.getMaxHeight() : 255;
		int x = CoordXZ.regionToBlock(coord.x);
		int z = CoordXZ.regionToBlock(coord.z);
		api.triggerRenderOfVolume(worldName, x, 0, z, x+511, y, z+511);
	}

	public static void renderChunks(String worldName, List<CoordXZ> coords)
	{
		if (!renderEnabled()) return;

		World world = Bukkit.getWorld(worldName);
		int y = (world != null) ? world.getMaxHeight() : 255;

		for (CoordXZ coord : coords)
		{
			renderChunk(worldName, coord, y);
		}
	}

	public static void renderChunk(String worldName, CoordXZ coord, int maxY)
	{
		if (!renderEnabled()) return;

		int x = CoordXZ.chunkToBlock(coord.x);
		int z = CoordXZ.chunkToBlock(coord.z);
		api.triggerRenderOfVolume(worldName, x, 0, z, x+15, maxY, z+15);
	}


	/*
	 * Methods for displaying our borders on DynMap's world maps
	 */

    private static Map<String, CircleMarker> roundBorders = new HashMap<String, CircleMarker>();
    private static Map<String, AreaMarker> squareBorders = new HashMap<String, AreaMarker>();

	public static void showAllBorders()
	{
		if (!borderEnabled()) return;

		// in case any borders are already shown
		removeAllBorders();

		if (!Config.DynmapBorderEnabled())
		{
			// don't want to show the marker set in DynMap if our integration is disabled
			if (markSet != null)
				markSet.deleteMarkerSet();
			markSet = null;
			return;
		}

		// make sure the marker set is initialized
		markSet = markApi.getMarkerSet("worldborder.markerset");
		if(markSet == null)
			markSet = markApi.createMarkerSet("worldborder.markerset", "WorldBorder", null, false);
		else
			markSet.setMarkerSetLabel("WorldBorder");
		markSet.setLayerPriority(Config.DynmapPriority());
		markSet.setHideByDefault(Config.DynmapHideByDefault());
		Map<String, BorderData> borders = Config.getBorders();
		for(Entry<String, BorderData> stringBorderDataEntry : borders.entrySet())
		{
			String worldName = stringBorderDataEntry.getKey();
			BorderData border = stringBorderDataEntry.getValue();
			showBorder(worldName, border);
		}
	}

	public static void showBorder(String worldName, BorderData border)
	{
		if (!borderEnabled()) return;

		if (!Config.DynmapBorderEnabled()) return;

		if ((border.getShape() == null) ? Config.ShapeRound() : border.getShape())
			showRoundBorder(worldName, border);
		else
			showSquareBorder(worldName, border);
	}

	private static void showRoundBorder(String worldName, BorderData border)
	{
		if (squareBorders.containsKey(worldName))
			removeBorder(worldName);

		CircleMarker marker = roundBorders.get(worldName);
		if (marker == null)
		{
			marker = markSet.createCircleMarker("worldborder_"+worldName, Config.DynmapMessage(), false, worldName, border.getX(), 64.0, border.getZ(), border.getRadiusX(), border.getRadiusZ(), true);
			marker.setLineStyle(lineWeight, lineOpacity, lineColor);
			marker.setFillStyle(0.0, 0x000000);
			roundBorders.put(worldName, marker);
		}
		else
		{
			marker.setCenter(worldName, border.getX(), 64.0, border.getZ());
			marker.setRadius(border.getRadiusX(), border.getRadiusZ());
		}
	}

	private static void showSquareBorder(String worldName, BorderData border)
	{
		if (roundBorders.containsKey(worldName))
			removeBorder(worldName);

		// corners of the square border
		double[] xVals = {border.getX() - border.getRadiusX(), border.getX() + border.getRadiusX()};
		double[] zVals = {border.getZ() - border.getRadiusZ(), border.getZ() + border.getRadiusZ()};

		AreaMarker marker = squareBorders.get(worldName);
		if (marker == null)
		{
			marker = markSet.createAreaMarker("worldborder_"+worldName, Config.DynmapMessage(), false, worldName, xVals, zVals, true);
			marker.setLineStyle(3, 1.0, 0xFF0000);
			marker.setFillStyle(0.0, 0x000000);
			squareBorders.put(worldName, marker);
		}
		else
		{
			marker.setCornerLocations(xVals, zVals);
		}
	}

	public static void removeAllBorders()
	{
		if (!borderEnabled()) return;

		for(CircleMarker marker : roundBorders.values())
		{
			marker.deleteMarker();
		}
		roundBorders.clear();

		for(AreaMarker marker : squareBorders.values())
		{
			marker.deleteMarker();
		}
		squareBorders.clear();
	}

	public static void removeBorder(String worldName)
	{
		if (!borderEnabled()) return;

		CircleMarker marker = roundBorders.remove(worldName);
		if (marker != null)
			marker.deleteMarker();

		AreaMarker marker2 = squareBorders.remove(worldName);
		if (marker2 != null)
			marker2.deleteMarker();
	}
}