BloodMagic/src/main/java/WayofTime/bloodmagic/api/recipe/AlchemyTableRecipe.java

package WayofTime.bloodmagic.api.recipe;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import com.google.common.collect.ImmutableList;
import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.oredict.OreDictionary;
import org.apache.commons.lang3.builder.ToStringBuilder;

public class AlchemyTableRecipe
{
    protected ItemStack output = ItemStack.EMPTY;
    protected ArrayList<Object> input = new ArrayList<Object>();
    protected int lpDrained;
    protected int ticksRequired;
    protected int tierRequired;

    public AlchemyTableRecipe(Block result, int lpDrained, int ticksRequired, int tierRequired, Object... recipe)
    {
        this(new ItemStack(result), lpDrained, ticksRequired, tierRequired, recipe);
    }

    public AlchemyTableRecipe(Item result, int lpDrained, int ticksRequired, int tierRequired, Object... recipe)
    {
        this(new ItemStack(result), lpDrained, ticksRequired, tierRequired, recipe);
    }

    public AlchemyTableRecipe(ItemStack result, int lpDrained, int ticksRequired, int tierRequired, Object... recipe)
    {
        output = result.copy();
        this.lpDrained = lpDrained;
        this.ticksRequired = ticksRequired;
        this.tierRequired = tierRequired;
        for (Object in : recipe)
        {
            if (in instanceof ItemStack)
            {
                input.add(((ItemStack) in).copy());
            } else if (in instanceof Item)
            {
                input.add(new ItemStack((Item) in));
            } else if (in instanceof Block)
            {
                input.add(new ItemStack((Block) in));
            } else if (in instanceof String)
            {
                input.add(OreDictionary.getOres((String) in));
            } else
            {
                String ret = "Invalid alchemy recipe: ";
                for (Object tmp : recipe)
                {
                    ret += tmp + ", ";
                }
                ret += output;
                throw new RuntimeException(ret);
            }
        }
    }

    /**
     * Returns the size of the recipe area
     */
    public int getRecipeSize()
    {
        return input.size();
    }

    /**
     * Returns the output of the recipe, sensitive to the input list provided.
     * If the input list does not technically match, the recipe should return
     * the default output.
     * 
     * @param inputList
     * @return
     */
    public ItemStack getRecipeOutput(List<ItemStack> inputList)
    {
        return output.copy();
    }

    /**
     * Used to check if a recipe matches current crafting inventory. World and
     * BlockPos are for future-proofing
     */
    @SuppressWarnings("unchecked")
    public boolean matches(List<ItemStack> checkedList, World world, BlockPos pos)
    {
        ArrayList<Object> required = new ArrayList<Object>(input);

        for (ItemStack slot : checkedList)
        {
            if (!slot.isEmpty())
            {
                boolean inRecipe = false;

                for (Object aRequired : required)
                {
                    boolean match = false;

                    if (aRequired instanceof ItemStack)
                    {
                        match = OreDictionary.itemMatches((ItemStack) aRequired, slot, false);
                    } else if (aRequired instanceof List)
                    {
                        Iterator<ItemStack> itr = ((List<ItemStack>) aRequired).iterator();
                        while (itr.hasNext() && !match)
                        {
                            match = OreDictionary.itemMatches(itr.next(), slot, false);
                        }
                    }

                    if (match)
                    {
                        inRecipe = true;
                        required.remove(aRequired);
                        break;
                    }
                }

                if (!inRecipe)
                {
                    return false;
                }
            }
        }

        return required.isEmpty();
    }

    /**
     * Returns the input for this recipe, any mod accessing this value should
     * never manipulate the values in this array as it will effect the recipe
     * itself.
     * 
     * @return The recipes input vales.
     */
    public List<Object> getInput()
    {
        return ImmutableList.copyOf(input);
    }

    public ItemStack[] getRemainingItems(ItemStack[] inventory)
    {
        ItemStack[] ret = inventory.clone();
        for (int i = 0; i < ret.length; i++)
        {
            ret[i] = getContainerItem(inventory[i]);
        }

        return ret;
    }

    protected ItemStack getContainerItem(ItemStack stack)
    {
        if (stack.isEmpty())
        {
            return ItemStack.EMPTY;
        }

        ItemStack copyStack = stack.copy();

        if (copyStack.getItem().hasContainerItem(stack))
        {
            return copyStack.getItem().getContainerItem(copyStack);
        }

        copyStack.shrink(1);
        if (copyStack.isEmpty())
        {
            return ItemStack.EMPTY;
        }

        return copyStack;
    }

    public int getLpDrained() {
        return lpDrained;
    }

    public int getTicksRequired() {
        return ticksRequired;
    }

    public int getTierRequired() {
        return tierRequired;
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this)
                .append("output", output)
                .append("input", input)
                .append("lpDrained", lpDrained)
                .append("ticksRequired", ticksRequired)
                .append("tierRequired", tierRequired)
                .append("recipeSize", getRecipeSize())
                .toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof AlchemyTableRecipe)) return false;

        AlchemyTableRecipe that = (AlchemyTableRecipe) o;

        if (lpDrained != that.lpDrained) return false;
        if (ticksRequired != that.ticksRequired) return false;
        if (tierRequired != that.tierRequired) return false;
        if (output != null ? !output.equals(that.output) : that.output != null) return false;
        return input != null ? input.equals(that.input) : that.input == null;
    }

    @Override
    public int hashCode() {
        int result = output != null ? output.hashCode() : 0;
        result = 31 * result + (input != null ? input.hashCode() : 0);
        result = 31 * result + lpDrained;
        result = 31 * result + ticksRequired;
        result = 31 * result + tierRequired;
        return result;
    }
}