package gtPlusPlus.xmod.gregtech.api.objects;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import net.minecraft.item.ItemStack;

import gregtech.api.objects.GT_ArrayList;
import gtPlusPlus.xmod.gregtech.api.enums.GregtechOrePrefixes;
import gtPlusPlus.xmod.gregtech.api.enums.GregtechOrePrefixes.GT_Materials;

public class GregtechItemData {

    private static final GregtechMaterialStack[] EMPTY_GT_MaterialStack_ARRAY = new GregtechMaterialStack[0];

    public final List<Object> mExtraData = new GT_ArrayList<>(false, 1);
    public final GregtechOrePrefixes mPrefix;
    public final GregtechMaterialStack mMaterial;
    public final GregtechMaterialStack[] mByProducts;
    public boolean mBlackListed = false;
    public ItemStack mUnificationTarget = null;

    public GregtechItemData(final GregtechOrePrefixes aPrefix, final GT_Materials aMaterial,
        final boolean aBlackListed) {
        this.mPrefix = aPrefix;
        this.mMaterial = aMaterial == null ? null : new GregtechMaterialStack(aMaterial, aPrefix.mMaterialAmount);
        this.mBlackListed = aBlackListed;
        this.mByProducts = (aPrefix.mSecondaryMaterial == null) || (aPrefix.mSecondaryMaterial.mMaterial == null)
            ? EMPTY_GT_MaterialStack_ARRAY
            : new GregtechMaterialStack[] { aPrefix.mSecondaryMaterial.clone() };
    }

    public GregtechItemData(final GregtechOrePrefixes aPrefix, final GT_Materials aMaterial) {
        this(aPrefix, aMaterial, false);
    }

    public GregtechItemData(final GregtechMaterialStack aMaterial, final GregtechMaterialStack... aByProducts) {
        this.mPrefix = null;
        this.mMaterial = aMaterial.mMaterial == null ? null : aMaterial.clone();
        this.mBlackListed = true;
        if (aByProducts == null) {
            this.mByProducts = EMPTY_GT_MaterialStack_ARRAY;
        } else {
            final GregtechMaterialStack[] tByProducts = aByProducts.length < 1 ? EMPTY_GT_MaterialStack_ARRAY
                : new GregtechMaterialStack[aByProducts.length];
            int j = 0;
            for (GregtechMaterialStack aByProduct : aByProducts) {
                if ((aByProduct != null) && (aByProduct.mMaterial != null)) {
                    tByProducts[j++] = aByProduct.clone();
                }
            }
            this.mByProducts = j > 0 ? new GregtechMaterialStack[j] : EMPTY_GT_MaterialStack_ARRAY;
            for (int i = 0; i < this.mByProducts.length; i++) {
                this.mByProducts[i] = tByProducts[i];
            }
        }
    }

    public GregtechItemData(final GT_Materials aMaterial, final long aAmount,
        final GregtechMaterialStack... aByProducts) {
        this(new GregtechMaterialStack(aMaterial, aAmount), aByProducts);
    }

    public GregtechItemData(final GT_Materials aMaterial, final long aAmount, final GT_Materials aByProduct,
        final long aByProductAmount) {
        this(new GregtechMaterialStack(aMaterial, aAmount), new GregtechMaterialStack(aByProduct, aByProductAmount));
    }

    public GregtechItemData(final GregtechItemData... aData) {
        this.mPrefix = null;
        this.mBlackListed = true;

        final ArrayList<GregtechMaterialStack> aList = new ArrayList<>(), rList = new ArrayList<>();

        for (final GregtechItemData tData : aData) {
            if (tData != null) {
                if (tData.hasValidMaterialData() && (tData.mMaterial.mAmount > 0)) {
                    aList.add(tData.mMaterial.clone());
                }
                for (final GregtechMaterialStack tMaterial : tData.mByProducts) {
                    if (tMaterial.mAmount > 0) {
                        aList.add(tMaterial.clone());
                    }
                }
            }
        }

        for (final GregtechMaterialStack aMaterial : aList) {
            boolean temp = true;
            for (final GregtechMaterialStack tMaterial : rList) {
                if (aMaterial.mMaterial == tMaterial.mMaterial) {
                    tMaterial.mAmount += aMaterial.mAmount;
                    temp = false;
                    break;
                }
            }
            if (temp) {
                rList.add(aMaterial.clone());
            }
        }

        rList.sort((a, b) -> Long.compare(b.mAmount, a.mAmount));

        if (rList.isEmpty()) {
            this.mMaterial = null;
        } else {
            this.mMaterial = rList.get(0);
            rList.remove(0);
        }

        this.mByProducts = rList.toArray(new GregtechMaterialStack[0]);
    }

    public boolean hasValidPrefixMaterialData() {
        return (this.mPrefix != null) && (this.mMaterial != null) && (this.mMaterial.mMaterial != null);
    }

    public boolean hasValidPrefixData() {
        return this.mPrefix != null;
    }

    public boolean hasValidMaterialData() {
        return (this.mMaterial != null) && (this.mMaterial.mMaterial != null);
    }

    public ArrayList<GregtechMaterialStack> getAllGT_MaterialStacks() {
        final ArrayList<GregtechMaterialStack> rList = new ArrayList<>();
        if (this.hasValidMaterialData()) {
            rList.add(this.mMaterial);
        }
        rList.addAll(Arrays.asList(this.mByProducts));
        return rList;
    }

    public GregtechMaterialStack getByProduct(final int aIndex) {
        return (aIndex >= 0) && (aIndex < this.mByProducts.length) ? this.mByProducts[aIndex] : null;
    }

    @Override
    public String toString() {
        if ((this.mPrefix == null) || (this.mMaterial == null) || (this.mMaterial.mMaterial == null)) {
            return "";
        }
        return this.mPrefix.name() + this.mMaterial.mMaterial.name();
    }
}