using System;
using System.Linq;
using System.Threading.Tasks;

var activeTrader = "";
var traderId = -1;
var allReceivedItems = new HashSet<string>();

string GetItemName(int itemId, string itemType, int spriteId) {
    try {
        var type = itemType == "s" ? ItemType.Floor : ItemType.Wall;
        var furniInfo = FurniData.GetInfo(type, spriteId);
        return furniInfo.Name;
    } catch {
        return $"item_{spriteId}";
    }
}

OnIntercept(In["TradingOpen"], async e => {
    var userId1 = e.Packet.ReadInt();
    var canTrade1 = e.Packet.ReadInt();
    var userId2 = e.Packet.ReadInt();
    var canTrade2 = e.Packet.ReadInt();
    
    traderId = (userId1 == Self.Id) ? userId2 : userId1;
    allReceivedItems.Clear();
    
    var trader = Users.FirstOrDefault(u => u.Id == traderId);
    if (trader != null) {
        activeTrader = trader.Name;
    }
});

OnIntercept(In["TradingItemList"], async e => {
    var packet = e.Packet;
    
    try {
        var user1Id = packet.ReadInt();
        var user1ItemCount = packet.ReadInt();
        var user1CreditCount = packet.ReadInt();
        var user1Items = packet.ReadInt();
        
        var user2Id = packet.ReadInt();
        var user2ItemCount = packet.ReadInt();
        
        if (user2Id == traderId && user2ItemCount > 0) {
            for (int j = 0; j < user2ItemCount; j++) {
                try {
                    var itemId = packet.ReadInt();
                    var itemType = packet.ReadString();
                    var furniId = packet.ReadInt();
                    var spriteId = packet.ReadInt();
                    
                    if (spriteId > 0 && spriteId < 100000) {
                        var itemName = GetItemName(itemId, itemType, spriteId);
                        allReceivedItems.Add(itemName);
                    }
                    
                    if (j == 0) {
                        break;
                    }
                    
                } catch {
                    break;
                }
            }
            
            if (allReceivedItems.Count > 0) {
                await Task.Delay(1);
                Send(Out["AcceptTrading"]);
            }
        }
    } catch {
    }
});

OnIntercept(In["TradingConfirmation"], async e => {
    await Task.Delay(1);
    Send(Out["ConfirmAcceptTrading"]);
});

OnIntercept(In["TradingCompleted"], async e => {
    if (!string.IsNullOrEmpty(activeTrader) && allReceivedItems.Count > 0) {
        await Task.Delay(1);
        
        var itemList = string.Join(", ", allReceivedItems);
        Shout($"Hey {activeTrader} thank you for the {itemList}!");
    }
    
    activeTrader = "";
    traderId = -1;
    allReceivedItems.Clear();
});

Wait();