package gregtech.api.objects;

import gregtech.api.enums.Materials;
import gregtech.api.enums.OrePrefixes;

import java.util.*;

import net.minecraft.item.ItemStack;

public class ItemData {
	private static final MaterialStack[] EMPTY_MATERIALSTACK_ARRAY = new MaterialStack[0];
	
	public final List<Object> mExtraData = new GT_ArrayList<Object>(false, 1);
	
	public boolean mBlackListed = false;
	public ItemStack mUnificationTarget = null;
	
	public final OrePrefixes mPrefix;
	public final MaterialStack mMaterial;
	public final MaterialStack[] mByProducts;
	
	public ItemData(OrePrefixes aPrefix, Materials aMaterial, boolean aBlackListed) {
		mPrefix = aPrefix;
		mMaterial = aMaterial==null?null:new MaterialStack(aMaterial, aPrefix.mMaterialAmount);
		mBlackListed = aBlackListed;
		mByProducts = aPrefix.mSecondaryMaterial==null||aPrefix.mSecondaryMaterial.mMaterial==null?EMPTY_MATERIALSTACK_ARRAY:new MaterialStack[] {aPrefix.mSecondaryMaterial.clone()};
	}
	
	public ItemData(OrePrefixes aPrefix, Materials aMaterial) {
		this(aPrefix, aMaterial, false);
	}
	
	public ItemData(MaterialStack aMaterial, MaterialStack... aByProducts) {
		mPrefix = null;
		mMaterial = aMaterial.mMaterial==null?null:aMaterial.clone();
		mBlackListed = true;
		if (aByProducts == null) {
			mByProducts = EMPTY_MATERIALSTACK_ARRAY;
		} else {
			MaterialStack[] tByProducts = aByProducts.length<1?EMPTY_MATERIALSTACK_ARRAY:new MaterialStack[aByProducts.length];
			int j = 0;
			for (int i = 0; i < aByProducts.length; i++) if (aByProducts[i] != null && aByProducts[i].mMaterial != null) tByProducts[j++] = aByProducts[i].clone();
			mByProducts = j>0?new MaterialStack[j]:EMPTY_MATERIALSTACK_ARRAY;
			for (int i = 0; i < mByProducts.length; i++) mByProducts[i] = tByProducts[i];
		}
	}
	
	public ItemData(Materials aMaterial, long aAmount, MaterialStack... aByProducts) {
		this(new MaterialStack(aMaterial, aAmount), aByProducts);
	}
	
	public ItemData(Materials aMaterial, long aAmount, Materials aByProduct, long aByProductAmount) {
		this(new MaterialStack(aMaterial, aAmount), new MaterialStack(aByProduct, aByProductAmount));
	}
	
	public ItemData(ItemData... aData) {
		mPrefix = null;
		mBlackListed = true;
		
		ArrayList<MaterialStack> aList = new ArrayList<MaterialStack>(), rList = new ArrayList<MaterialStack>();
		
		for (ItemData tData : aData) if (tData != null) {
			if (tData.hasValidMaterialData() && tData.mMaterial.mAmount > 0) aList.add(tData.mMaterial.clone());
			for (MaterialStack tMaterial : tData.mByProducts) if (tMaterial.mAmount > 0) aList.add(tMaterial.clone());
		}
		
		for (MaterialStack aMaterial : aList) {
			boolean temp = true;
			for (MaterialStack tMaterial : rList) if (aMaterial.mMaterial == tMaterial.mMaterial) {
				tMaterial.mAmount += aMaterial.mAmount;
				temp = false; break;
			}
			if (temp) rList.add(aMaterial.clone());
		}
		
		Collections.sort(rList, new Comparator<MaterialStack>() {@Override public int compare(MaterialStack a, MaterialStack b) {return a.mAmount == b.mAmount ? 0 : a.mAmount > b.mAmount ? -1 : +1;}});
		
		if (rList.isEmpty()) {
			mMaterial = null;
		} else {
			mMaterial = rList.get(0);
			rList.remove(0);
		}
		
		mByProducts = rList.toArray(new MaterialStack[rList.size()]);
	}
	
	public boolean hasValidPrefixMaterialData() {
		return mPrefix != null && mMaterial != null && mMaterial.mMaterial != null;
	}
	
	public boolean hasValidPrefixData() {
		return mPrefix != null;
	}
	
	public boolean hasValidMaterialData() {
		return mMaterial != null && mMaterial.mMaterial != null;
	}
	
	public ArrayList<MaterialStack> getAllMaterialStacks() {
		ArrayList<MaterialStack> rList = new ArrayList();
		if (hasValidMaterialData()) rList.add(mMaterial);
		rList.addAll(Arrays.asList(mByProducts));
		return rList;
	}
	
	public MaterialStack getByProduct(int aIndex) {
		return aIndex>=0&&aIndex<mByProducts.length?mByProducts[aIndex]:null;
	}
	
	@Override
	public String toString() {
		if (mPrefix == null || mMaterial == null || mMaterial.mMaterial == null) return "";
		return mPrefix.name() + mMaterial.mMaterial.name();
	}
}