using Ananta.SDK.Network;
using Ananta.SDK.Rpc;
using Ananta.SDK.Serialization;
using Ananta.Server.Protocol.Client4229938;
using SceneMethods = Ananta.Server.RpcTypes.Client4229938.Methods.GameScene;

namespace Ananta.Server.Handlers.Game;

/// <summary>
/// Spoon server-action output ports. The client's spoon task graph asks the SERVER which
/// output port to take (AskGetSpoonServerOutputPortIndexByType, UXRPCTask&lt;uint&gt;) or to
/// perform an action (AskDoSpoonServerActionByType). We answer port 0 — byte-identical to
/// the typed-default fallback — and, for do-action, push the nearest repair shop's
/// inventory so the mechanic's "assortment" dialog branch opens with content.
/// Full param decoding (SpoonServerActionParam) is deferred: the raw body is logged.
/// </summary>
internal sealed partial class GameRouter
{
    [Handler(MethodId.AskGetSpoonServerOutputPortIndexByType, HandlerPacketKind.Invoke)]
    private Task SpoonOutputPortProbe(Connection conn, UxRpcMessage msg)
    {
        conn.Log.Info($"[SPOON] output-port probe bytes={msg.Body.Length} -> port 0");
        return conn.ReturnAsync(msg, 0u);
    }

    [Handler(MethodId.AskDoSpoonServerActionByType, HandlerPacketKind.Invoke)]
    private async Task SpoonServerAction(Connection conn, UxRpcMessage msg)
    {
        conn.Log.Info($"[SPOON] do-action bytes={msg.Body.Length} -> ok (port 0)");
        await conn.ReturnEmptyOkAsync(msg);

        // Push the nearest repair shop's inventory when the player is close to one —
        // the mechanic's assortment dialog opens empty without this push.
        var state = GetStateIfExists(conn.Session);
        if (state is null || !state.HasLastReportedPlayerTransform)
            return;
        var px = state.LastReportedPlayerPosition.X;
        var pz = state.LastReportedPlayerPosition.Z;
        var west = ShopInteriors[0];
        var seaside = ShopInteriors[1];
        float D2(SceneMethods.UxVector3 e) => (px - e.X) * (px - e.X) + (pz - e.Z) * (pz - e.Z);
        var (shopId, dist2) = D2(west.Entrance) <= D2(seaside.Entrance) ? (94100069u, D2(west.Entrance)) : (94100070u, D2(seaside.Entrance));
        if (dist2 > 60f * 60f)
            return;
        ShopCommodityCache.Value.TryGetValue(shopId, out var ids);
        var items = (ids ?? []).Select(id => new RpcTypes.Client4229938.Methods.Game.ShopCommodityItem
        {
            TemplateId = id,
            Count = 1,
            Status = 0,
            Discount = 100,
            MaxBuyCount = 0,
        }).ToList();
        await conn.Session.NotifyAsync(MethodId.IGameToClient_SyncFullCommodityInfos, UxSerializer.Serialize(
            new RpcTypes.Client4229938.Methods.Game.SyncFullCommodityInfos
            {
                shopId = shopId,
                infos = items,
            }), CancellationToken.None);
        conn.Log.Info($"[SPOON] do-action -> pushed {items.Count} commodities shop={shopId} (dist={MathF.Sqrt(dist2):F0}m)");
    }
}