using System.Diagnostics;


using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


namespace GameServer;


public class ShopProductCheckTicker : EntityTicker
{
    private Dictionary<int, Timestamp?> m_shop { get; set; } = new();
    
    public ShopProductCheckTicker(double onTickIntervalMilliseconds, CancellationTokenSource? cts) 
        : base(EntityType.ShopProductCheckTicker, onTickIntervalMilliseconds, cts)
    {
        foreach (var shop in ShopHelper.getShopMetaData())
        {
            var end_time = ShopHelper.calculateSaleEndTime(shop.ResetTime);
            m_shop.Add(shop.Id, end_time);
        }
    }
    
    public override async Task onTaskTick()
    {
        await Task.CompletedTask;

        Stopwatch? stopwatch = null;
        var event_tid = string.Empty;

        var server_logic = GameServerApp.getServerLogic();
        var server_config = server_logic.getServerConfig();

        if (true == server_config.PerformanceCheckEnable)
        {
            event_tid = System.Guid.NewGuid().ToString("N");
            stopwatch = Stopwatch.StartNew();
        }

        // 1. reset 상점 ids list 조회
        var reset_shop_ids = checkShopEndTime();
        if (!reset_shop_ids.Any()) return;
        
        // 2. 유저의 상점 정보 체크
        foreach (var each in server_logic.getPlayerManager().getUsers())
        {
            var player = each.Value;

            var user_create_or_load_action = player.getEntityAction<UserCreateOrLoadAction>();

            if (false == user_create_or_load_action.isCompletedLoadUser())
            {
                continue;
            }

            checkShopReset(player, reset_shop_ids.ToList());
        }

        if (null != stopwatch)
        {
            var elapsed_msec = stopwatch.ElapsedMilliseconds;
            stopwatch.Stop();
            Log.getLogger().debug($"{GetType()} Ticker Stopwatch Stop : ETID:{event_tid}, ElapsedMSec:{elapsed_msec}, TickIntervalMSec:{getOnTickIntervalMilliseconds()}");
        }
    }

    public override string toBasicString()
    {
        return $"{this.getTypeName()}";
    }

    public override string toSummaryString()
    {
        return $"{this.getTypeName()}";
    }

    private IEnumerable<int> checkShopEndTime()
    {
        var list = new List<int>(m_shop.Count);
        foreach (var shop in m_shop)
        {
            if (shop.Value == null) continue;
            if (shop.Value > DateTime.UtcNow.ToTimestamp()) continue;

            var new_end_time = newEndTime(shop.Key);
            if (new_end_time == null) continue;

            m_shop[shop.Key] = new_end_time;
            list.Add(shop.Key);
        }

        return list;
    }

    private static Timestamp? newEndTime(int shop_id)
    {
        var shop_table = ShopHelper.checkShopIdFromTableData(shop_id);
        if (shop_table.result.isFail() || shop_table.shop_data == null) return null;

        return ShopHelper.calculateSaleEndTime(shop_table.shop_data.ResetTime);
    }

    private static void checkShopReset(Player player, IReadOnlyList<int> shop_ids)
    {
        var server_logic = GameServerApp.getServerLogic();
        
        var shop_action = player.getEntityAction<ShopAction>();

        var message = new ClientToGame();
        message.Message = new();
        message.Message.NtfShopProductChange = new();
        
        foreach (var shop in shop_action.getMyShopProducts())
        {
            var attribute = shop.getEntityAttribute<ShopProductTradingMeterAttribute>();
            NullReferenceCheckHelper.throwIfNull(attribute, () => $"attribute is null !!!");

            if (!shop_ids.Contains(attribute.ShopId)) continue;
            
            message.Message.NtfShopProductChange.ShopId = attribute.ShopId;
            server_logic.onSendPacket(player, message);
        }
    }
}