/*
 * This file is part of LuckPerms, licensed under the MIT License.
 *
 *  Copyright (c) lucko (Luck) <luck@lucko.me>
 *  Copyright (c) contributors
 *
 *  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.
 */

package me.lucko.luckperms.nukkit.model.dummy;

import cn.nukkit.permission.PermissibleBase;
import cn.nukkit.permission.Permission;
import cn.nukkit.permission.PermissionAttachment;
import cn.nukkit.permission.PermissionAttachmentInfo;
import cn.nukkit.plugin.Plugin;

import java.lang.reflect.Field;
import java.util.Collections;
import java.util.Map;

public class DummyPermissibleBase extends PermissibleBase {
    private static final Field ATTACHMENTS_FIELD;
    private static final Field PERMISSIONS_FIELD;

    static {
        try {
            ATTACHMENTS_FIELD = PermissibleBase.class.getDeclaredField("attachments");
            ATTACHMENTS_FIELD.setAccessible(true);

            PERMISSIONS_FIELD = PermissibleBase.class.getDeclaredField("permissions");
            PERMISSIONS_FIELD.setAccessible(true);
        } catch (NoSuchFieldException e) {
            throw new ExceptionInInitializerError(e);
        }
    }

    public static void nullFields(PermissibleBase permissibleBase) {
        try {
            ATTACHMENTS_FIELD.set(permissibleBase, Collections.emptyList());
        } catch (Exception e) {
            // ignore
        }
        try {
            PERMISSIONS_FIELD.set(permissibleBase, Collections.emptyMap());
        } catch (Exception e) {
            // ignore
        }
    }

    public static void copyFields(PermissibleBase from, PermissibleBase to) {
        try {
            ATTACHMENTS_FIELD.set(to, ATTACHMENTS_FIELD.get(from));
        } catch (Exception e) {
            // ignore
        }
        try {
            PERMISSIONS_FIELD.set(to, PERMISSIONS_FIELD.get(from));
        } catch (Exception e) {
            // ignore
        }
    }

    public static final DummyPermissibleBase INSTANCE = new DummyPermissibleBase();

    private DummyPermissibleBase() {
        super(null);
        nullFields(this);
    }

    @Override public boolean isOp() { return false; }
    @Override public void setOp(boolean value) {}
    @Override public boolean isPermissionSet(String name) { return false; }
    @Override public boolean isPermissionSet(Permission perm) { return false; }
    @Override public boolean hasPermission(String inName) { return false; }
    @Override public boolean hasPermission(Permission perm) { return false; }
    @Override public PermissionAttachment addAttachment(Plugin plugin) { return null; }
    @Override public PermissionAttachment addAttachment(Plugin plugin, String name) { return null; }
    @Override public PermissionAttachment addAttachment(Plugin plugin, String name, Boolean value) { return null; }
    @Override public void removeAttachment(PermissionAttachment attachment) {}
    @Override public void recalculatePermissions() {}
    @Override public void clearPermissions() {}
    @Override public Map<String, PermissionAttachmentInfo> getEffectivePermissions() { return Collections.emptyMap(); }

}

@@ -1562,41 +1562,155 @@
 til.
-Collections;%0Aimport java.util.Map
+AbstractList;%0Aimport java.util.Collection;%0Aimport java.util.Collections;%0Aimport java.util.List;%0Aimport java.util.Map;%0Aimport java.util.RandomAccess
 ;%0A%0Ap
@@ -2425,31 +2425,18 @@
 se, 
-Collections.emptyList()
+EMPTY_LIST
 );%0A 
@@ -4233,10 +4233,715 @@
 p(); %7D%0A%0A
+    // empty list impl that doesn't throw an exception on calls to #add%0A    private static final List EMPTY_LIST = new EmptyList%3C%3E();%0A    private static class EmptyList%3CE%3E extends AbstractList%3CE%3E implements RandomAccess %7B%0A%0A        @Override%0A        public boolean add(E e) %7B%0A            // do nothing, but don't throw an exception%0A            return true;%0A        %7D%0A%0A        @Override%0A        public boolean addAll(Collection%3C? extends E%3E c) %7B%0A            // do nothing%0A            return true;%0A        %7D%0A%0A        @Override%0A        public E get(int index) %7B%0A            throw new IndexOutOfBoundsException();%0A        %7D%0A%0A        @Override%0A        public int size() %7B%0A            return 0;%0A        %7D%0A    %7D%0A%0A
 %7D%0A

Make the dummy attachment a bit more compatible