Create ClearWeaponsCommand.java

A command to clear unlocked and unequipped artifacts

src/main/java/emu/grasscutter/command/commands/ClearWeaponsCommand.java

+package emu.grasscutter.command.commands;
+
+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 = "clearweapons", usage = "clearweapons",
+        description = "Deletes all unequipped and unlocked weapons, including yellow rarity ones from your inventory",
+        aliases = {"clearwpns"}, permission = "player.clearweapons")
+public final class ClearWeaponsCommand implements CommandHandler {
+
+    @Override
+    public void execute(GenshinPlayer sender, List<String> args) {
+        if (sender == null) {
+            CommandHandler.sendMessage(null, "Run this command in-game.");
+            return; // TODO: clear player's weapons from console or other players
+        }
+
+        Inventory playerInventory = sender.getInventory();
+        playerInventory.getItems().values().stream()
+                .filter(item -> item.getItemType() == ItemType.ITEM_WEAPON)
+                .filter(item -> !item.isLocked() && !item.isEquipped())
+                .forEach(item -> playerInventory.removeItem(item, item.getCount()));
+    }
+}