package gtPlusPlus.xmod.ob;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
import net.minecraftforge.event.entity.player.PlayerInteractEvent;
import net.minecraftforge.event.entity.player.PlayerInteractEvent.Action;

import org.apache.commons.lang3.StringUtils;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import gtPlusPlus.api.objects.Logger;
import gtPlusPlus.api.objects.data.AutoMap;
import gtPlusPlus.core.util.minecraft.ItemUtils;
import gtPlusPlus.core.util.minecraft.PlayerUtils;
import gtPlusPlus.core.util.reflect.ReflectionUtils;

public class GliderHandler {

    private static final AutoMap<Integer> mDimensionalBlacklist = new AutoMap<Integer>();

    @SubscribeEvent
    public void onItemUsageEx(final PlayerInteractEvent event) {
        if (event != null && event.entityPlayer != null) {

            if (event.action != Action.RIGHT_CLICK_BLOCK && event.action != Action.RIGHT_CLICK_AIR) {
                Logger.WARNING("[OpenBlocks] Wrong type of PlayerInteractEvent, skipping.");
            }
            if (event.entityPlayer.worldObj.isRemote) {
                return;
            }

            ItemStack aItem = PlayerUtils.getItemStackInPlayersHand(event.entityPlayer);
            if (ItemUtils.checkForInvalidItems(aItem)) {
                Class aItemGliderClass = ReflectionUtils.getClass("openblocks.common.item.ItemHangGlider");
                if (aItemGliderClass.isInstance(aItem.getItem())) {
                    if (!canPlayerGlideInThisDimension(event.entityPlayer)) {
                        event.setCanceled(true);
                        PlayerUtils.messagePlayer(event.entityPlayer, "Glider is blacklisted in this dimension.");
                        Logger.WARNING(
                                "[OpenBlocks] " + event.entityPlayer.getCommandSenderName()
                                        + " tried to use glider in dimension "
                                        + event.entityPlayer.getEntityWorld().provider.dimensionId
                                        + ".");
                    } else {
                        Logger.WARNING(
                                "[OpenBlocks] " + event.entityPlayer.getCommandSenderName()
                                        + " used glider in dimension "
                                        + event.entityPlayer.getEntityWorld().provider.dimensionId
                                        + ".");
                    }
                } else {
                    Logger.WARNING("[OpenBlocks] Item was not a glider.");
                }
            } else {
                Logger.WARNING("[OpenBlocks] Bad Item in player hand.");
            }
        } else {
            Logger.WARNING("[OpenBlocks] Bad event or player.");
        }
    }

    private static final boolean canPlayerGlideInThisDimension(EntityPlayer aPlayer) {
        World aWorld = aPlayer.worldObj;
        if (aWorld == null) {
            return false;
        } else {
            if (aWorld.provider == null) {
                return false;
            } else {
                int aDimID = aWorld.provider.dimensionId;
                for (int i : mDimensionalBlacklist) {
                    if (i == aDimID) {
                        return false;
                    }
                }
            }
        }
        return true;
    }

    static final void populateBlacklist() {
        if (!mDimensionalBlacklist.isEmpty()) {
            return;
        }
        File aBlacklist = gtPlusPlus.core.util.data.FileUtils.getFile("config/GTplusplus/", "GliderBlacklist", "cfg");
        List<String> lines = new ArrayList<String>();
        try {
            lines = org.apache.commons.io.FileUtils.readLines(aBlacklist, "utf-8");
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (lines.isEmpty()) {
            FileWriter fw;
            try {
                String aInfoTip = "# Add one dimension ID per line. Lines with a # are comments and are ignored.";
                fw = new FileWriter(aBlacklist);
                fw.write(aInfoTip);
                fw.close();
                lines.add(aInfoTip);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (!lines.isEmpty()) {
            for (String s : lines) {
                if (s != null && !s.equals("") && !s.contains("#")) {
                    s = StringUtils.remove(s, " ");
                    s = StringUtils.trim(s);
                    s = StringUtils.remove(s, ",");
                    Integer g = Integer.decode(s);
                    if (g != null) {
                        mDimensionalBlacklist.add(g);
                        Logger.INFO("[OpenBlocks] Added Dimension with ID '" + g + "' to Blacklist for Glider.");
                    }
                }
            }
        }
    }
}