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path: root/src/main/java/lv/enes/mc/eris_alchemy/block/entity/EnergyCondenserEntity.java
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package lv.enes.mc.eris_alchemy.block.entity;

import jakarta.annotation.Nonnull;
import lv.enes.mc.eris_alchemy.Emc;
import lv.enes.mc.eris_alchemy.ErisAlchemyRegistry.BlockEntities;
import lv.enes.mc.eris_alchemy.ErisAlchemyRegistry.Blocks;
import lv.enes.mc.eris_alchemy.client.ErisAlchemyClientRegistry;
import lv.enes.mc.eris_alchemy.menu.ChestLikeMenu;
import lv.enes.mc.eris_alchemy.menu.EnergyCondenserMenu;
import lv.enes.mc.eris_alchemy.utils.ContainerOpenersCounterUtil;
import lv.enes.mc.eris_alchemy.utils.SyncedValue.SyncedDouble;
import net.fabricmc.fabric.api.screenhandler.v1.ExtendedScreenHandlerFactory;
import net.minecraft.client.resources.model.Material;
import net.minecraft.core.BlockPos;
import net.minecraft.core.NonNullList;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.FriendlyByteBuf;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.entity.player.Inventory;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.state.BlockState;
import org.quiltmc.loader.api.minecraft.ClientOnly;

import java.util.stream.IntStream;

public class EnergyCondenserEntity extends ChestLikeEntity implements EmcStorageEntity, ExtendedScreenHandlerFactory {
	private final static int WIDTH = 13;
	private final static int HEIGHT = 7;

	private final NonNullList<ItemStack> items = NonNullList.withSize(WIDTH * HEIGHT + 1, ItemStack.EMPTY);

	public final SyncedDouble storedEmc = new SyncedDouble(0);

	public EnergyCondenserEntity(BlockPos pos, BlockState state) {
		super(BlockEntities.ENERGY_CONDENSER, pos, state);
	}

	@Nonnull
	@Override
	protected ChestLikeMenu createMenu(int syncId, Inventory playerInventory) {
		return new EnergyCondenserMenu(syncId, playerInventory, this);
	}

	@Nonnull
	@Override
	protected NonNullList<ItemStack> getItems() {
		return items;
	}

	@Override
	public double getMaxEmc() {
		return Emc.get(items.get(0)).orElse(Double.POSITIVE_INFINITY);
	}

	@ClientOnly
	@Nonnull
	public Material getMaterial() {
		return ErisAlchemyClientRegistry.Materials.ENERGY_CONDENSER;
	}

	@Nonnull
	@Override
	protected Block getParent() {
		return Blocks.ENERGY_CONDENSER;
	}

	@Override
	public double getStoredEmc() {
		return storedEmc.getValue();
	}

	public SyncedDouble getStoredEmcSyncer() {
		return storedEmc;
	}

	@Override
	public void load(CompoundTag nbt) {
		super.load(nbt);
		storedEmc.setValue(nbt.getDouble("stored_emc"));
	}

	@Override
	protected void saveAdditional(CompoundTag nbt) {
		super.saveAdditional(nbt);
		nbt.putDouble("stored_emc", storedEmc.getValue());
	}

	public void setStoredEmc(double storedEmc) {
		this.storedEmc.setValue(storedEmc);
		setChanged();
	}

	@Override
	public void tick(Level world, BlockPos pos, BlockState state) {
		super.tick(world, pos, state);
		if (world.isClientSide) {
			return;
		}
		
		var cost = getMaxEmc();
		tryConsumeEmc(cost);
		tryCloneTemplate(cost);
		this.storedEmc.syncIfChanged(ContainerOpenersCounterUtil.getOpeners(openersCounter));
	}

	@Override
	public void writeScreenOpeningData(ServerPlayer player, FriendlyByteBuf buf) {
		storedEmc.serialize(buf);
	}

	private void tryCloneTemplate(double cost) {
		if (cost > getStoredEmc()) {
			return;
		}

		var template = items.get(0);

		items.stream()
				.skip(1) // skip template
				.filter(stack -> ItemStack.isSameItemSameTags(template, stack))
				.filter(stack -> stack.getCount() < getMaxStackSize() && stack.getCount() < stack.getMaxStackSize())
				.findFirst()
				.ifPresentOrElse(
						stack -> {
							stack.setCount(stack.getCount() + 1);
							setStoredEmc(getStoredEmc() - cost);
							setChanged();
						},
						() -> IntStream.range(1, items.size())
								.filter(i -> items.get(i).isEmpty())
								.findFirst()
								.ifPresent(emptySlot -> {
									items.set(emptySlot, template.copyWithCount(1));
									setStoredEmc(getStoredEmc() - cost);
									setChanged();
								})
				);
	}

	private void tryConsumeEmc(double cost) {
		if (cost <= getStoredEmc()) {
			return;
		}

		var template = items.get(0);
		var sacrifice = items.stream()
				.skip(1) // skip the template
				.filter(stack -> !ItemStack.isSameItemSameTags(template, stack))
				.flatMap(stack -> Emc.get(stack)
						.stream()
						.mapToObj(emcValue -> new StackEmcPair(stack, emcValue)))
				.findFirst();
		sacrifice.ifPresent(pair -> {
			pair.stack.setCount(pair.stack.getCount() - 1);
			setStoredEmc(getStoredEmc() + pair.emc());
		});
	}

	private record StackEmcPair(ItemStack stack, double emc) {}
}