package rush.fgeradores.apis;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.Map.Entry;

import org.bukkit.entity.EntityType;
import org.bukkit.inventory.ItemStack;

import rush.fgeradores.util.ReflectionUtils;

public class ItemAPI {

	private static Field map;
	private static Method asNMSCopy;
	private static Method hasNBTTagCompound;
	private static Method getNBTTagCompound;

	@SuppressWarnings("deprecation")
	public static EntityType getEntityType(ItemStack item) {
        Map<String, Object> map = ItemAPI.getNBTTags(item);

        // Verificando se ele possui alguma NBTTag
        if (map == null) {
            return null;
        }

        for (Entry<String, Object> entry : map.entrySet()) {
            try {
            	String value = entry.getValue().toString().toUpperCase().replace("\"", "").replace("'", "");

                try {
                	EntityType tipo =  EntityType.valueOf(value.toUpperCase());
                    return tipo;
                } catch (Throwable e) {}

                try {
                    EntityType tipo = EntityType.fromName(value);
                    return tipo;
                } catch (Throwable e) {}

            } catch (Throwable e) {}
        }

        return null;
	}

	@SuppressWarnings("unchecked")
	private static Map<String, Object> getNBTTags(ItemStack item) {
		try {
			Object CraftItemStack = asNMSCopy.invoke(null, item);
			boolean hasNBTTag = (boolean) hasNBTTagCompound.invoke(CraftItemStack);
			if (hasNBTTag) {
				Object NBTTagCompound = getNBTTagCompound.invoke(CraftItemStack);
				return (Map<String, Object>) map.get(NBTTagCompound);
			}
			return null;
		} catch (Throwable e) {
			e.printStackTrace();
			return null;
		}
	}

	public static void load() {
		try
		{
			// Item Classes
			Class<?> CraftItemStackClass = ReflectionUtils.getOBClass("inventory.CraftItemStack");
			Class<?> ItemStackClass = ReflectionUtils.getNMSClass("ItemStack");
			Class<?> NBTTagCompoundClass = ReflectionUtils.getNMSClass("NBTTagCompound");

			// Field map
			map = NBTTagCompoundClass.getDeclaredField("map");
			map.setAccessible(true);

			// Item Handle Methods
			asNMSCopy = CraftItemStackClass.getDeclaredMethod("asNMSCopy", ItemStack.class);

			// Item NBTTag Methods
			getNBTTagCompound = ItemStackClass.getDeclaredMethod("getTag");
			hasNBTTagCompound = ItemStackClass.getDeclaredMethod("hasTag");

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

}