using System.Text;
using Fake.RabbitMQ;
using InterfaceForward.Domain.Shared.Helpers;
using RabbitMQ.Client;
using TrackCenter.Application.Dtos.TrackPush;
using TrackCenter.Application.Events;

namespace TrackCenter.Application.Services.Broadcasting;

/// <summary>
/// 对外 Topic 广播（下游仍按 Newtonsoft PascalCase 契约消费，不经 Messaging 信封）。
/// </summary>
public class BroadcastingService(IRabbitMqChannelPool channelPool) : ITransientDependency
{
    public void TrackChangePublicTopic(TrackChangeEto eto, string AppCode)
    {
        PublishByConfirmSelect(
            GlobalConst.TrackChangeExchange,
            ExchangeType.Topic,
            $"TrackChange.{AppCode}",
            Encoding.UTF8.GetBytes(eto.ToJson()),
            prop => { prop.Persistent = true; });
    }

    /// <summary>
    /// 轨迹推送完成广播（批量）
    /// </summary>
    public void TrackPushCompletedPublicTopic(List<TrackPushRecordDto> list)
    {
        var data = list
            .Select(TrackPushRecordDtoToEvent)
            .Select(x => Encoding.UTF8.GetBytes(x.ToJson()));
        var log = list.First();
        PublishByConfirmSelect(
            GlobalConst.TrackPushExchange,
            ExchangeType.Topic,
            $"TrackPush.{log.AppKey}",
            data,
            prop => { prop.Persistent = true; });
    }

    /// <summary>
    /// 轨迹推送完成广播
    /// </summary>
    public void TrackPushCompletedPublicTopic(TrackPushRecordDto log)
    {
        var data = TrackPushRecordDtoToEvent(log);
        PublishByConfirmSelect(
            GlobalConst.TrackPushExchange,
            ExchangeType.Topic,
            $"TrackPush.{log.AppKey}",
            Encoding.UTF8.GetBytes(data.ToJson()),
            prop => { prop.Persistent = true; });
    }

    /// <summary>
    /// 轨迹推送失败广播
    /// </summary>
    public void TrackPushFailedPubilcTopic(TrackPushRecordDto log)
    {
        //暂时使用推送完成模型，后续可能会出现有区分度的模型
        TrackPushCompletedPublicTopic(log);
    }

    private void PublishByConfirmSelect(
        string exchange,
        string exchangeType,
        string routingKey,
        byte[] data,
        Action<IBasicProperties>? options = null)
    {
        using var channelAccessor = channelPool.Acquire(routingKey);
        var channel = channelAccessor.Channel;
        channel.ExchangeDeclare(exchange, exchangeType, durable: true);
        var props = channel.CreateBasicProperties();
        options?.Invoke(props);
        channel.ConfirmSelect();
        channel.BasicPublish(exchange, routingKey, props, data);
        channel.WaitForConfirmsOrDie();
    }

    private void PublishByConfirmSelect(
        string exchange,
        string exchangeType,
        string routingKey,
        IEnumerable<byte[]> datas,
        Action<IBasicProperties>? options = null)
    {
        using var channelAccessor = channelPool.Acquire(routingKey);
        var channel = channelAccessor.Channel;
        channel.ExchangeDeclare(exchange, exchangeType, durable: true);
        var props = channel.CreateBasicProperties();
        options?.Invoke(props);
        channel.ConfirmSelect();
        foreach (var data in datas)
            channel.BasicPublish(exchange, routingKey, props, data);
        channel.WaitForConfirmsOrDie();
    }

    private static TrackPushCompletedEvent TrackPushRecordDtoToEvent(TrackPushRecordDto log)
    {
        return new TrackPushCompletedEvent
        {
            RequestId = log.RequestId,
            IsSuccess = log.IsSuccess,
            Message = log.Message,
            OperationMan = log.OperationMan,
            PushTime = log.PushTime,
            OptionType = log.OptionType,
            IsManualPush = log.IsManualPush, //操作人不为系统用户，则认为是人推送
            PushContent = log.PushContent,
            OrderNo = log.OrderNo,
            TrackStatus = log.TrackStatus,
            TrackContent = log.TrackContent,
            TrackTimeZone = log.TrackTimeZone,
            TrackTime = log.TrackTime,
            TrackPlace = log.TrackPlace,
            TrackCode = log.TrackCode,
            Extra = log.Extra,
            InterfaceRelayData = log.InterfaceRelayData
        };
    }
}