fixes #851

src/main/java/com/raoulvdberge/refinedstorage/api/autocrafting/ICraftingManager.java

@@ -2,6 +2,7 @@ package com.raoulvdberge.refinedstorage.api.autocrafting;
 
 import com.raoulvdberge.refinedstorage.api.autocrafting.task.ICraftingTask;
 import com.raoulvdberge.refinedstorage.api.util.IComparer;
+import com.raoulvdberge.refinedstorage.api.util.IStackList;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 
@@ -102,6 +103,23 @@ public interface ICraftingManager {
         return chain == null ? null : chain.cycle();
     }
 
+    /**
+     * Returns a crafting pattern for an item stack.
+     * This returns a single crafting pattern, as opposed to {@link ICraftingManager#getPatterns(ItemStack, int)}.
+     * Internally, this makes a selection out of the available patterns.
+     * It makes this selection based on the item count of the pattern outputs in the {@link IStackList<ItemStack>} provided.
+     *
+     * @param pattern the stack to get a pattern for
+     * @param flags   the flags to compare on, see {@link IComparer}
+     * @param itemList the {@link IStackList<ItemStack>} used to calculate the best fitting pattern
+     * @return the pattern, or null if the pattern is not found
+     */
+    @Nullable
+    default ICraftingPattern getPattern(ItemStack pattern, int flags, IStackList<ItemStack> itemList) {
+        ICraftingPatternChain chain = getPatternChain(pattern, flags, itemList);
+        return chain == null ? null : chain.cycle();
+    }
+
     /**
      * Returns a crafting pattern for an item stack.
      * This returns a single crafting pattern, as opposed to {@link ICraftingManager#getPatterns(ItemStack, int)}.
@@ -129,6 +147,20 @@ public interface ICraftingManager {
     @Nullable
     ICraftingPatternChain getPatternChain(ItemStack pattern, int flags);
 
+    /**
+     * Returns a crafting pattern chain for an item stack.
+     * This returns a single crafting pattern, as opposed to {@link ICraftingManager#getPatterns(ItemStack, int)}.
+     * Internally, this makes a selection out of the available patterns.
+     * It makes this selection based on the item count of the pattern outputs in the {@link IStackList<ItemStack>} provided.
+     *
+     * @param pattern the stack to get a pattern for
+     * @param flags   the flags to compare on, see {@link IComparer}
+     * @param itemList the {@link IStackList<ItemStack>} used to calculate the best fitting pattern
+     * @return the pattern chain, or null if the pattern chain is not found
+     */
+    @Nullable
+    ICraftingPatternChain getPatternChain(ItemStack pattern, int flags, IStackList<ItemStack> itemList);
+
     /**
      * Returns a crafting pattern for an item stack.
      * This returns a single crafting pattern, as opposed to {@link ICraftingManager#getPatterns(ItemStack, int)}.

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/CraftingManager.java

@@ -113,6 +113,11 @@ public class CraftingManager implements ICraftingManager {
 
     @Override
     public ICraftingPatternChain getPatternChain(ItemStack pattern, int flags) {
+        return getPatternChain(pattern, flags, network.getItemStorageCache().getList().getOredicted());
+    }
+
+    @Override
+    public ICraftingPatternChain getPatternChain(ItemStack pattern, int flags, IStackList<ItemStack> itemList) {
         List<ICraftingPatternChain> patternChains = getPatternChains(pattern, flags);
 
         if (patternChains.isEmpty()) {
@@ -124,8 +129,6 @@ public class CraftingManager implements ICraftingManager {
         int highestScore = 0;
         int highestPattern = 0;
 
-        IStackList<ItemStack> itemList = network.getItemStorageCache().getList().getOredicted();
-
         for (int i = 0; i < patternChains.size(); ++i) {
             int score = 0;
 

src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java

@@ -152,7 +152,7 @@ public class CraftingTask implements ICraftingTask {
             ICraftingPattern inputPattern = null;
             int available = (extraStack == null ? 0 : extraStack.getCount()) + (networkStack == null ? 0 : networkStack.getCount());
             if (available < input.getCount()) {
-                inputPattern = network.getCraftingManager().getPattern(input, compare);
+                inputPattern = network.getCraftingManager().getPattern(input, compare, networkList);
                 if (inputPattern != null) {
                     if (inputPattern.getInputs().stream().anyMatch(s -> API.instance().getComparer().isEqual(s, lambdaInput, lambdaCompare))) {
                         int craftQuantity = inputPattern.getQuantityPerRequest(input, compare);
@@ -199,7 +199,7 @@ public class CraftingTask implements ICraftingTask {
                 } else {
                     int oreDictedCompare = compare | (pattern.isOredict() ? IComparer.COMPARE_OREDICT : 0);
                     if (inputPattern == null) {
-                        inputPattern = network.getCraftingManager().getPattern(input, oreDictedCompare);
+                        inputPattern = network.getCraftingManager().getPattern(input, oreDictedCompare, networkList);
                     }
 
                     if (inputPattern != null) {