using System;

using Server;
using Server.Accounting;
using Server.Custom.Bridge;

namespace Server.Custom.Bridge
{
    /// <summary>
    ///     Subscribes to the PlayerVendorSale event added by the Phase 7 core patches. This file is
    ///     part of that coupled unit and is NOT in overlay/, because it references
    ///     PlayerVendorSaleEventArgs, which does not exist until the EventSink patch is applied —
    ///     shipping it in overlay/ would break the build on any install without the patch.
    ///
    ///     Deploy: apply patches/playervendor-sale-*.patch, then copy this file to
    ///     Scripts/Custom/Bridge/BridgeVendorSale.cs.
    ///
    ///     The event fires at the committed sale (PlayerVendorBuyGump.OnResponse), on the Core
    ///     thread, with buyer, vendor owner, item, price, and commission all in scope — richer than
    ///     the NPC ValidVendor* events (which lack owner and commission) and, unlike them, on a
    ///     committed sale rather than a validation stage. It is the backbone of the cheat-detection
    ///     feed: same-account buyer≈owner is gold laundering, off-market prices and burst patterns
    ///     are visible to the sidecar.
    /// </summary>
    public static class BridgeVendorSale
    {
        public static void Initialize()
        {
            if (!BridgeConfig.Enabled)
                return;

            EventSink.PlayerVendorSale += OnPlayerVendorSale;
            Console.WriteLine("[Bridge] player-vendor sale stream attached");
        }

        private static void OnPlayerVendorSale(PlayerVendorSaleEventArgs e)
        {
            try
            {
                var sb = BridgeJson.Begin("vendor.sale")
                    .Bool("committed", true);

                // Buyer
                if (e.Buyer != null)
                {
                    sb.Ser("buyerSerial", e.Buyer.Serial);
                    var ba = e.Buyer.Account as Account;
                    if (ba != null)
                        sb.Str("buyerAcct", ba.Username);
                }

                // Vendor owner — the player who actually profits.
                if (e.Owner != null)
                {
                    sb.Ser("ownerSerial", e.Owner.Serial);
                    var oa = e.Owner.Account as Account;
                    if (oa != null)
                        sb.Str("ownerAcct", oa.Username);
                }

                if (e.Vendor != null)
                    sb.Ser("vendorSerial", e.Vendor.Serial);

                if (e.Item != null)
                {
                    sb.Ser("itemSerial", e.Item.Serial);
                    sb.Str("itemType", e.Item.GetType().Name);
                    sb.Num("itemId", e.Item.ItemID);
                    sb.Num("amount", e.Item.Amount);
                }

                sb.Num("price", e.Price);
                sb.Num("commission", e.Commission);

                BridgeLink.Emit(sb.End());
            }
            catch (Exception ex)
            {
                Console.WriteLine("[Bridge] vendor.sale handler threw: {0}", ex.Message);
            }
        }
    }
}