OnPlayerUnbanned

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

namespace Oxide.Plugins
{
    [Info("Unban Notifier", "RustPluginGenerator", "1.0.0")]
    [Description("Sends staff a chat and console message whenever a player is unbanned")]
    public class UnbanNotifier : RustPlugin
    {
        private const string PermStaff = "unbannotifier.staff";

        private PluginConfig config;

        private class PluginConfig
        {
            [JsonProperty("Notify staff in chat")]
            public bool NotifyChat = true;

            [JsonProperty("Write to server console")]
            public bool LogToConsole = 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>
            {
                ["Staff"] = "UNBAN: {0} ({1}) from {2}",
                ["Console"] = "Player unbanned: {0} ({1}) address {2}"
            }, this);
        }

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

        private void OnPlayerUnbanned(string playerName, ulong steamId, string address)
        {
            string name = string.IsNullOrEmpty(playerName) || playerName == "Unnamed" ? "unknown" : playerName;
            string ip = string.IsNullOrEmpty(address) || address == "0" ? "unknown" : address;

            if (config.LogToConsole)
                Puts(Msg("Console", null, name, steamId, ip));

            if (!config.NotifyChat) return;

            string message = Msg("Staff", null, name, steamId, ip);
            foreach (var player in BasePlayer.activePlayerList)
            {
                if (player == null || !player.IsConnected) continue;
                if (permission.UserHasPermission(player.UserIDString, PermStaff))
                    player.ChatMessage(message);
            }
        }

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