CanEditPlayerBoat

using System.Linq;
using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Oxide.Core;
using UnityEngine;

namespace Oxide.Plugins
{
    [Info("BoatEditControl", "RustPluginGenerator", "1.0.0")]
    [Description("Restricts who can start editing a PlayerBoat to the owner, their team, or permission holders")]
    public class BoatEditControl : RustPlugin
    {
        private const string PermAllow = "boateditcontrol.allow";

        private PluginConfig config;

        private class PluginConfig
        {
            [JsonProperty("Allow teammates")]
            public bool AllowTeammates { get; set; } = true;

            [JsonProperty("Notify on denial")]
            public bool NotifyOnDenial { get; set; } = true;
        }

        protected override void LoadDefaultConfig() => config = new PluginConfig();

        protected override void LoadConfig()
        {
            base.LoadConfig();
            try
            {
                config = Config.ReadObject<PluginConfig>();
                if (config == null) throw new Exception();
            }
            catch
            {
                PrintWarning("Configuration file is invalid, using defaults");
                LoadDefaultConfig();
            }
            SaveConfig();
        }

        protected override void SaveConfig() => Config.WriteObject(config);

        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                ["Denied"] = "You are not allowed to edit this boat."
            }, this);
        }

        private string Msg(string key, string userId = null, params object[] args) =>
            string.Format(lang.GetMessage(key, this, userId), args);

        private void Init()
        {
            permission.RegisterPermission(PermAllow, this);
        }

        private object CanEditPlayerBoat(PlayerBoat playerBoat, BasePlayer player)
        {
            if (playerBoat == null || player == null) return null;
            if (player.IsAdmin || permission.UserHasPermission(player.UserIDString, PermAllow)) return null;

            ulong ownerId = playerBoat.OwnerID;
            if (ownerId == player.userID.Get()) return null;

            if (config.AllowTeammates && ownerId != 0)
            {
                ulong team = player.currentTeam;
                if (team != 0)
                {
                    var teamInfo = RelationshipManager.ServerInstance.FindTeam(team);
                    if (teamInfo != null && teamInfo.members.Contains(ownerId)) return null;
                }
            }

            if (config.NotifyOnDenial)
            {
                player.ChatMessage(Msg("Denied", player.UserIDString));
            }
            return false;
        }
    }
}