OnDoorKnocked

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

namespace Oxide.Plugins
{
    [Info("Door Knock Alerts", "RustPluginGenerator", "1.0.0")]
    [Description("Sends a chat alert to a door owner and their team when an unauthorized player knocks.")]
    public class DoorKnockAlerts : RustPlugin
    {
        private const string PermUse = "doorknockalerts.use";

        private class PluginConfig
        {
            [JsonProperty("Alert cooldown per player in seconds")]
            public float CooldownSeconds = 30f;

            [JsonProperty("Only alert when no building privilege")]
            public bool RequireNoPrivilege = true;
        }

        private PluginConfig config;
        private readonly Dictionary<string, double> lastAlert = new Dictionary<string, double>();

        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>
            {
                ["Alert"] = "{0} knocked on your door at {1}."
            }, 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(PermUse, this);
        }

        private void OnDoorKnocked(Door door, BasePlayer player)
        {
            if (door == null || player == null || player.IsNpc) return;

            var owner = BasePlayer.FindAwakeOrSleeping(door.OwnerID.ToString());
            if (owner == null || owner.userID == player.userID) return;

            if (config.RequireNoPrivilege)
            {
                var privilege = door.GetBuildingPrivilege();
                if (privilege != null && privilege.IsAuthed(player)) return;
            }

            string key = player.UserIDString + "|" + door.net.ID.Value;
            double now = UnityEngine.Time.realtimeSinceStartup;
            double last;
            if (lastAlert.TryGetValue(key, out last) && now - last < config.CooldownSeconds) return;
            lastAlert[key] = now;

            string message = Msg("Alert", owner.UserIDString, player.displayName,
                door.transform.position.ToString("F0"));

            owner.ChatMessage(message);

            if (owner.currentTeam != 0)
            {
                var team = RelationshipManager.ServerInstance.FindTeam(owner.currentTeam);
                if (team != null)
                {
                    foreach (ulong memberId in team.members)
                    {
                        if (memberId == owner.userID.Get()) continue;
                        var member = BasePlayer.FindByID(memberId);
                        if (member != null && member.IsConnected)
                            member.ChatMessage(message);
                    }
                }
            }
        }

        private void Unload()
        {
            lastAlert.Clear();
        }
    }
}