using System;
using System.Reflection;

using Server.Accounting;
using Server.Items;
using Server.Mobiles;

namespace Server.Custom
{
    /// <summary>
    ///     Spawns a reachable, houseless player vendor next to the `tester` character (wttest) and
    ///     gives tester gold, so the PlayerVendorSale core patch can be exercised by a real in-game
    ///     purchase. The buyer must be a non-GM — IsOwner() treats any GameMaster+ as the owner of
    ///     every player vendor, so an Owner-level character can never buy.
    ///
    ///     Owner is a seed_000 character, so buyer (wttest) and owner (seed_000) are different
    ///     accounts — a clean cheat-detection example.
    ///
    ///     Test scaffolding. Never deployed. Spawns a mobile and hands out gold; run only on the
    ///     throwaway seeded world.
    /// </summary>
    public static class BridgeVendorTestProbe
    {
        private static readonly MethodInfo SetVendorItem = typeof(PlayerVendor).GetMethod(
            "SetVendorItem",
            BindingFlags.Instance | BindingFlags.NonPublic,
            null,
            new[] { typeof(Item), typeof(int), typeof(string) },
            null);

        public static void Initialize()
        {
            if (Config.Get("Bridge.VendorTestOnStart", false))
                EventSink.ServerStarted += () => Timer.DelayCall(TimeSpan.FromSeconds(3.0), Run);
        }

        private static void Run()
        {
            try
            {
                var ownerAcct = Accounting.Accounts.GetAccount("seed_000") as Account;
                var owner = ownerAcct == null ? null : ownerAcct[0];

                var buyerAcct = Accounting.Accounts.GetAccount("wttest") as Account;
                var buyer = buyerAcct == null ? null : buyerAcct[0] as PlayerMobile;

                if (owner == null || buyer == null)
                {
                    Console.WriteLine("[VendorTest] need seed_000 owner and wttest/tester; not found");
                    return;
                }

                // Remove any prior test vendor (e.g. one orphaned on the Internal map).
                if (PlayerVendor.PlayerVendors != null)
                {
                    var doomed = new System.Collections.Generic.List<PlayerVendor>();
                    foreach (var v in PlayerVendor.PlayerVendors)
                        if (v != null && !v.Deleted && v.ShopName == "Bridge Test Shop")
                            doomed.Add(v);
                    foreach (var v in doomed)
                        v.Delete();
                }

                // A confirmed-walkable spot where tester was already standing this session, so the
                // vendor is on solid ground and reachable. Then force tester's logout location right
                // next to it, so tester logs in beside the vendor regardless of where it was.
                var map = Map.Trammel;
                var loc = new Point3D(3533, 2546, 20);           // vendor
                buyer.LogoutMap = map;
                buyer.LogoutLocation = new Point3D(3532, 2546, 20); // tester appears here

                var vendor = new PlayerVendor(owner, null)
                {
                    Name = "test vendor",
                    ShopName = "Bridge Test Shop"
                };
                vendor.MoveToWorld(loc, map);

                var blade = new Longsword();
                vendor.Backpack.DropItem(blade);
                if (SetVendorItem != null)
                    SetVendorItem.Invoke(vendor, new object[] { blade, 100, "a test blade" });

                // Make sure tester can afford it.
                if (buyer.Backpack != null)
                    buyer.Backpack.DropItem(new Gold(1000));

                Console.WriteLine(
                    "[VendorTest] spawned '{0}' (owner {1}/seed_000) next to {2}/wttest at {3} on {4}; test blade = 100 gold; gave tester 1000 gold",
                    vendor.ShopName, owner.Name, buyer.Name, loc, map);
            }
            catch (Exception ex)
            {
                Console.WriteLine("[VendorTest] FAILED: " + ex);
            }
        }
    }
}