ClearCommand.java

package emu.grasscutter.command.commands;

import emu.grasscutter.Grasscutter;
import emu.grasscutter.command.Command;
import emu.grasscutter.command.CommandHandler;
import emu.grasscutter.game.GenshinPlayer;
import emu.grasscutter.game.inventory.Inventory;
import emu.grasscutter.game.inventory.ItemType;

import java.util.List;

@Command(label = "clear", usage = "clear <all|wp|art|mat>", //Merged /clearartifacts and /clearweapons to /clear <args> [uid]
        description = "Deletes unequipped unlocked items, including yellow rarity ones from your inventory",
        aliases = {"clear"}, permission = "player.clearinv")

public final class ClearCommand implements CommandHandler {

    @Override
    public void execute(GenshinPlayer sender, List<String> args) {
        int target;
        if (sender == null) {
            CommandHandler.sendMessage(null, "Run this command in-game.");
            return; 
        }
        String cmdSwitch = args.get(1);
        
        Inventory playerInventory = sender.getInventory();
            try {
                target = Integer.parseInt(args.get(0));
                GenshinPlayer targetPlayer = Grasscutter.getGameServer().getPlayerByUid(target);
                if (targetPlayer == null) {
                    target = sender.getUid();
                } else {
                    switch (cmdSwitch) {
                        case "wp" -> {
                            playerInventory.getItems().values().stream()
                                    .filter(item -> item.getItemType() == ItemType.ITEM_WEAPON)
                                    .filter(item -> !item.isLocked() && !item.isEquipped())
                                    .forEach(item -> playerInventory.removeItem(item, item.getCount()));
                            sender.dropMessage("Cleared weapons for " + targetPlayer.getNickname() + " .");
                        }
                        case "art" -> {
                            playerInventory.getItems().values().stream()
                                    .filter(item -> item.getItemType() == ItemType.ITEM_RELIQUARY)
                                    .filter(item -> item.getLevel() == 1 && item.getExp() == 0)
                                    .filter(item -> !item.isLocked() && !item.isEquipped())
                                    .forEach(item -> playerInventory.removeItem(item, item.getCount()));
                            sender.dropMessage("Cleared artifacts for " + targetPlayer.getNickname() + " .");
                        }
                        case "mat" -> {
                            playerInventory.getItems().values().stream()
                                    .filter(item -> item.getItemType() == ItemType.ITEM_MATERIAL)
                                    .filter(item -> item.getLevel() == 1 && item.getExp() == 0)
                                    .filter(item -> !item.isLocked() && !item.isEquipped())
                                    .forEach(item -> playerInventory.removeItem(item, item.getCount()));
                            sender.dropMessage("Cleared artifacts for " + targetPlayer.getNickname() + " .");
                        }
                        case "all" -> {
                            playerInventory.getItems().values().stream()
                                    .filter(item1 -> item1.getItemType() == ItemType.ITEM_RELIQUARY)
                                    .filter(item1 -> item1.getLevel() == 1 && item1.getExp() == 0)
                                    .filter(item1 -> !item1.isLocked() && !item1.isEquipped())
                                    .forEach(item1 -> playerInventory.removeItem(item1, item1.getCount()));
                            playerInventory.getItems().values().stream()
                                    .filter(item2 -> item2.getItemType() == ItemType.ITEM_MATERIAL)
                                    .filter(item2 -> !item2.isLocked() && !item2.isEquipped())
                                    .forEach(item2 -> playerInventory.removeItem(item2, item2.getCount()));
                            playerInventory.getItems().values().stream()
                                    .filter(item3 -> item3.getItemType() == ItemType.ITEM_WEAPON)
                                    .filter(item3 -> item3.getLevel() == 1 && item3.getExp() == 0)
                                    .filter(item3 -> !item3.isLocked() && !item3.isEquipped())
                                    .forEach(item3 -> playerInventory.removeItem(item3, item3.getCount()));
                            playerInventory.getItems().values().stream()
                                    .filter(item4 -> item4.getItemType() == ItemType.ITEM_FURNITURE)
                                    .filter(item4 -> !item4.isLocked() && !item4.isEquipped())
                                    .forEach(item4 -> playerInventory.removeItem(item4, item4.getCount()));
                            playerInventory.getItems().values().stream()
                                    .filter(item5 -> item5.getItemType() == ItemType.ITEM_DISPLAY)
                                    .filter(item5 -> !item5.isLocked() && !item5.isEquipped())
                                    .forEach(item5 -> playerInventory.removeItem(item5, item5.getCount()));
                            playerInventory.getItems().values().stream()
                                    .filter(item6 -> item6.getItemType() == ItemType.ITEM_VIRTUAL)
                                    .filter(item6 -> !item6.isLocked() && !item6.isEquipped())
                                    .forEach(item6 -> playerInventory.removeItem(item6, item6.getCount()));
                            sender.dropMessage("Cleared everything for " + targetPlayer.getNickname() + " .");
                        }
                    }
                }
            } catch (NumberFormatException ignored) {
                // TODO: Parse from item name using GM Handbook.
                CommandHandler.sendMessage(sender, "Invalid playerId.");
                return;
            }

        GenshinPlayer targetPlayer = Grasscutter.getGameServer().getPlayerByUid(target);
        if (targetPlayer == null) {
            CommandHandler.sendMessage(sender, "Player not found.");
            return;
        }
    }
}