OnTurretStartup

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

namespace Oxide.Plugins
{
    [Info("Turret Lockdown On Startup", "RustPluginGenerator", "1.0.0")]
    [Description("Blocks AutoTurret startup during maintenance or event windows via OnTurretStartup.")]
    public class TurretLockdownOnStartup : RustPlugin
    {
        private const string PermToggle = "turretlockdownonstartup.toggle";

        private PluginConfig config;

        public class PluginConfig
        {
            [JsonProperty("Block turrets")]
            public bool BlockTurrets { get; set; } = false;

            [JsonProperty("Log blocked startups")]
            public bool LogBlocked { 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>
            {
                ["Blocked"] = "Turret startup is currently blocked across the server.",
                ["Allowed"] = "Turret startup is now allowed.",
                ["Denied"] = "You don't have permission to toggle turret startup.",
                ["BlockedCount"] = "Blocked turret startup at {0}"
            }, 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(PermToggle, this);
        }

        private object OnTurretStartup(AutoTurret autoTurret)
        {
            if (autoTurret == null) return null;
            if (!config.BlockTurrets) return null;

            if (config.LogBlocked)
            {
                PrintWarning(Msg("BlockedCount", null, autoTurret.transform.position));
            }

            return false;
        }

        [ChatCommand("turret.toggle")]
        private void CmdToggle(BasePlayer player, string command, string[] args)
        {
            if (player == null) return;
            if (!permission.UserHasPermission(player.UserIDString, PermToggle))
            {
                player.ChatMessage(Msg("Denied", player.UserIDString));
                return;
            }

            config.BlockTurrets = !config.BlockTurrets;
            SaveConfig();

            player.ChatMessage(Msg(config.BlockTurrets ? "Blocked" : "Allowed", player.UserIDString));
        }
    }
}