OnRentableShopClose

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

namespace Oxide.Plugins
{
    [Info("Shop Close Announcer", "RustPluginGenerator", "1.0.0")]
    [Description("Announces rentable shop closures to the owner's team and logs them to a data file")]
    public class ShopCloseAnnouncer : RustPlugin
    {
        private const string PermLog = "shopcloseannouncer.log";

        private PluginConfig config;
        private ShopLog log;

        private class PluginConfig
        {
            [JsonProperty("Announce to team")]
            public bool AnnounceToTeam = true;

            [JsonProperty("Maximum log entries")]
            public int MaxLogEntries = 200;
        }

        private class ShopLog
        {
            public List<ShopEntry> Entries = new List<ShopEntry>();
        }

        private class ShopEntry
        {
            public ulong OwnerId;
            public string OwnerName;
            public ulong ShopId;
            public string ClosedAt;
        }

        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>
            {
                ["Announce"] = "{0} closed their rental shop.",
                ["Logged"] = "Shop close logged. Total entries: {0}"
            }, this);
        }

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

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

        private void OnServerInitialized()
        {
            log = Interface.Oxide.DataFileSystem.ReadObject<ShopLog>(Name) ?? new ShopLog();
        }

        private object OnRentableShopClose(RentableShop rentableShop, bool notify)
        {
            if (rentableShop == null) return null;

            ulong ownerId = rentableShop.OwnerID;
            BasePlayer owner = ownerId != 0 ? BasePlayer.FindByID(ownerId) : null;
            string ownerName = owner != null ? owner.displayName : "An unknown player";

            if (config.AnnounceToTeam && owner != null && owner.currentTeam != 0)
            {
                var team = RelationshipManager.ServerInstance.FindTeam(owner.currentTeam);
                if (team != null)
                {
                    foreach (ulong memberId in team.members)
                    {
                        if (memberId == ownerId) continue;
                        BasePlayer member = BasePlayer.FindByID(memberId);
                        if (member == null || !member.IsConnected) continue;
                        member.ChatMessage(Msg("Announce", member.UserIDString, ownerName));
                    }
                }
            }

            if (log == null) return null;

            log.Entries.Add(new ShopEntry
            {
                OwnerId = ownerId,
                OwnerName = ownerName,
                ShopId = rentableShop.net != null ? rentableShop.net.ID.Value : 0UL,
                ClosedAt = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss")
            });

            while (log.Entries.Count > Mathf.Max(1, config.MaxLogEntries))
            {
                log.Entries.RemoveAt(0);
            }

            Interface.Oxide.DataFileSystem.WriteObject(Name, log);
            return null;
        }

        [ChatCommand("shoplog")]
        private void CmdShopLog(BasePlayer player, string command, string[] args)
        {
            if (player == null) return;
            if (!permission.UserHasPermission(player.UserIDString, PermLog))
            {
                player.ChatMessage("You do not have permission to view the shop log.");
                return;
            }

            int count = log != null ? log.Entries.Count : 0;
            player.ChatMessage(Msg("Logged", player.UserIDString, count));
        }
    }
}