Geyser/core/src/main/java/org/geysermc/geyser/translator/inventory/EnchantingInventoryTranslator.java

/*
 * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author GeyserMC
 * @link https://github.com/GeyserMC/Geyser
 */

package org.geysermc.geyser.translator.inventory;

import com.github.steveice10.mc.protocol.data.game.inventory.ContainerType;
import com.github.steveice10.mc.protocol.packet.ingame.serverbound.inventory.ServerboundContainerButtonClickPacket;
import com.nukkitx.protocol.bedrock.data.inventory.ContainerSlotType;
import com.nukkitx.protocol.bedrock.data.inventory.EnchantOptionData;
import com.nukkitx.protocol.bedrock.data.inventory.ItemStackRequest;
import com.nukkitx.protocol.bedrock.data.inventory.StackRequestSlotInfoData;
import com.nukkitx.protocol.bedrock.data.inventory.stackrequestactions.CraftRecipeStackRequestActionData;
import com.nukkitx.protocol.bedrock.data.inventory.stackrequestactions.StackRequestActionData;
import com.nukkitx.protocol.bedrock.data.inventory.stackrequestactions.StackRequestActionType;
import com.nukkitx.protocol.bedrock.packet.ItemStackResponsePacket;
import com.nukkitx.protocol.bedrock.packet.PlayerEnchantOptionsPacket;
import it.unimi.dsi.fastutil.ints.IntSets;
import org.geysermc.geyser.inventory.*;
import org.geysermc.geyser.inventory.item.Enchantment;
import org.geysermc.geyser.inventory.updater.UIInventoryUpdater;
import org.geysermc.geyser.session.GeyserSession;

import java.util.Arrays;
import java.util.Locale;

public class EnchantingInventoryTranslator extends AbstractBlockInventoryTranslator {
    public EnchantingInventoryTranslator() {
        super(2, "minecraft:enchanting_table", com.nukkitx.protocol.bedrock.data.inventory.ContainerType.ENCHANTMENT, UIInventoryUpdater.INSTANCE);
    }

    @Override
    public void updateProperty(GeyserSession session, Inventory inventory, int key, int value) {
        int slotToUpdate;
        EnchantingContainer enchantingInventory = (EnchantingContainer) inventory;
        boolean shouldUpdate = false;
        switch (key) {
            case 0:
            case 1:
            case 2:
                // Experience required
                slotToUpdate = key;
                enchantingInventory.getGeyserEnchantOptions()[slotToUpdate].setXpCost(value);
                break;
            case 4:
            case 5:
            case 6:
                // Enchantment type
                slotToUpdate = key - 4;
                // "value" here is the Java enchant ordinal, so that does not need to be changed
                // The Bedrock index might need changed, so let's look it up and see.
                int bedrockIndex = value;
                if (bedrockIndex != -1) {
                    Enchantment enchantment = Enchantment.getByJavaIdentifier("minecraft:" + Enchantment.JavaEnchantment.of(bedrockIndex).name().toLowerCase(Locale.ROOT));
                    if (enchantment != null) {
                        // Convert the Java enchantment index to Bedrock's
                        bedrockIndex = enchantment.ordinal();
                    } else {
                        // There is no Bedrock enchantment equivalent
                        bedrockIndex = -1;
                    }
                }
                enchantingInventory.getGeyserEnchantOptions()[slotToUpdate].setEnchantIndex(value, bedrockIndex);
                break;
            case 7:
            case 8:
            case 9:
                // Enchantment level
                slotToUpdate = key - 7;
                enchantingInventory.getGeyserEnchantOptions()[slotToUpdate].setEnchantLevel(value);
                shouldUpdate = true; // Java sends each property as its own packet, so let's only update after all properties have been sent
                break;
            default:
                return;
        }
        GeyserEnchantOption enchantOption = enchantingInventory.getGeyserEnchantOptions()[slotToUpdate];
        if (shouldUpdate && enchantOption.hasChanged()) {
            enchantingInventory.getEnchantOptions()[slotToUpdate] = enchantOption.build(session);
            PlayerEnchantOptionsPacket packet = new PlayerEnchantOptionsPacket();
            packet.getOptions().addAll(Arrays.asList(enchantingInventory.getEnchantOptions()));
            session.sendUpstreamPacket(packet);
        }
    }

    @Override
    protected boolean shouldHandleRequestFirst(StackRequestActionData action, Inventory inventory) {
        return action.getType() == StackRequestActionType.CRAFT_RECIPE;
    }

    @Override
    public ItemStackResponsePacket.Response translateSpecialRequest(GeyserSession session, Inventory inventory, ItemStackRequest request) {
        // Client has requested an item to be enchanted
        CraftRecipeStackRequestActionData craftRecipeData = (CraftRecipeStackRequestActionData) request.getActions()[0];
        EnchantingContainer enchantingInventory = (EnchantingContainer) inventory;
        int javaSlot = -1;
        for (int i = 0; i < enchantingInventory.getEnchantOptions().length; i++) {
            EnchantOptionData enchantData = enchantingInventory.getEnchantOptions()[i];
            if (enchantData != null) {
                if (craftRecipeData.getRecipeNetworkId() == enchantData.getEnchantNetId()) {
                    // Enchant net ID is how we differentiate between what item Bedrock wants
                    javaSlot = enchantingInventory.getGeyserEnchantOptions()[i].getJavaIndex();
                    break;
                }
            }
        }
        if (javaSlot == -1) {
            // Slot should be determined as 0, 1, or 2
            return rejectRequest(request);
        }
        ServerboundContainerButtonClickPacket packet = new ServerboundContainerButtonClickPacket(inventory.getJavaId(), javaSlot);
        session.sendDownstreamPacket(packet);
        return acceptRequest(request, makeContainerEntries(session, inventory, IntSets.emptySet()));
    }

    @Override
    public int bedrockSlotToJava(StackRequestSlotInfoData slotInfoData) {
        if (slotInfoData.getContainer() == ContainerSlotType.ENCHANTING_INPUT) {
            return 0;
        }
        if (slotInfoData.getContainer() == ContainerSlotType.ENCHANTING_LAPIS) {
            return 1;
        }
        return super.bedrockSlotToJava(slotInfoData);
    }

    @Override
    public BedrockContainerSlot javaSlotToBedrockContainer(int slot) {
        if (slot == 0) {
            return new BedrockContainerSlot(ContainerSlotType.ENCHANTING_INPUT, 14);
        }
        if (slot == 1) {
            return new BedrockContainerSlot(ContainerSlotType.ENCHANTING_LAPIS, 15);
        }
        return super.javaSlotToBedrockContainer(slot);
    }

    @Override
    public int javaSlotToBedrock(int slot) {
        if (slot == 0) {
            return 14;
        }
        if (slot == 1) {
            return 15;
        }
        return super.javaSlotToBedrock(slot);
    }

    @Override
    public Inventory createInventory(String name, int windowId, ContainerType containerType, PlayerInventory playerInventory) {
        return new EnchantingContainer(name, windowId, this.size, containerType, playerInventory);
    }
}