using DotNetCore.CAP;
using Fake.DependencyInjection;
using InterfaceForward.Domain.Shared.Helpers;
using Microsoft.Extensions.Logging;
using TrackCenter.Application.Events;
using TrackCenter.Application.Kafka;
using TrackCenter.Application.Queries;
using TrackCenter.Application.Services.Broadcasting;
using TrackCenter.Application.Services.Warning.Signals;
using TrackCenter.Domain.Aggregates.OrderAggregate;
using TrackCenter.Domain.Aggregates.TrackDetailsAggregate;
using TrackCenter.Domain.Dtos.TrackContents;
using TrackCenter.Domain.Enums;
using TrackCenter.Domain.Extensions;
using TrackCenter.Repository.Aggregates.OrderAggregate;
using OrderIdentifier = TrackCenter.Application.Events.OrderIdentifier;

namespace TrackCenter.Application.CAP.EventHandlers;

public class TrackUpsertEventHandler : ITransientDependency, ICapSubscribe
{
    private readonly ICapPublisher _capPublisher;
    private readonly IOrderRepository _orderRepository;
    private readonly ProvideQueries _provideQueries;
    private readonly ITrackDetailsEsRepository _trackDetailsEsRepository;
    private readonly BroadcastingService _broadcastingService;
    private readonly ILogger<TrackUpsertEventHandler> _logger;
    private readonly IOrderOperationRecordEsRepository _orderOperationRecordEsRepository;
    private readonly WarningSignalPublisher _warningSignalPublisher;

    public TrackUpsertEventHandler(
        IOrderRepository orderRepository,
        ICapPublisher capPublisher,
        ProvideQueries provideQueries,
        ITrackDetailsEsRepository trackDetailsEsRepository,
        IOrderOperationRecordEsRepository orderOperationRecordEsRepository,
        BroadcastingService broadcastingService,
        ILogger<TrackUpsertEventHandler> logger,
        WarningSignalPublisher warningSignalPublisher
    )
    {
        _orderRepository = orderRepository;
        _capPublisher = capPublisher;
        _provideQueries = provideQueries;
        _trackDetailsEsRepository = trackDetailsEsRepository;
        _orderOperationRecordEsRepository = orderOperationRecordEsRepository;
        _broadcastingService = broadcastingService;
        _logger = logger;
        _warningSignalPublisher = warningSignalPublisher;
    }

    [CapSubscribe(GlobalConst.TrackUpsertSubscribe, Group = GlobalConst.TrackUpsertSubscribe)]
    [CapSubscribe(GlobalConst.TrackUpsertForRefreshSubscribe, Group = GlobalConst.TrackUpsertForRefreshSubscribe)]
    public async Task ConsumerAsync(TrackUpsertEvent @event)
    {
        if (!CanDelete(@event)) return;

        var canNextOrderIds = new List<int>();

        var content = await HandleTrackAsync(@event, canNextOrderIds);

        // 处理广播事件
        if (content != null && (content.IsToMq || @event.IsToMq))
            _ = EnsureWriteAfterPublicTopicAsync(@event, content.IsExternal, content.SubSystemCode, content.TrackStatusCode);

        if (canNextOrderIds.Count == 0) return;
        // 根据订单关联关系异步向下刷（异步）
        await DownByOrderLink(@event, canNextOrderIds);
    }

    private async Task DownByOrderLink(TrackUpsertEvent @event, List<int> canNextOrderIds)
    {
        // 根据订单关联关系异步向下刷（异步）
        var linkedOrders = await _orderRepository.GetLinkedOrdersAsync(canNextOrderIds.ToArray());
        foreach (var order in @event.OrderIdentifiers)
        {
            // 理论上小包在这不会分组
            foreach (var group in linkedOrders.Where(x => x.OwnerOrderId == order.OrderId)
                         .GroupBy(x => new
                         {
                             x.SubSystemId,
                             x.CustomId // 这里按客户分组是为了后续的推送方便
                         }))
            {
                var nextEvent = @event.DeepCopy();
                nextEvent.Visited.AddRange(canNextOrderIds);
                nextEvent.SubSystemId = group.Key.SubSystemId;
                nextEvent.CustomId = group.Key.CustomId;
                nextEvent.TrackRefreshData = new TrackRefreshStruct
                {
                    ServiceProviderCode = @event.TrackRefreshData.ServiceProviderCode,
                    OriginTrackContent = @event.TrackRefreshData.OriginTrackContent,
                    OriginTrackDataHash = @event.TrackRefreshData.OriginTrackDataHash,
                };

                // 不同子系统需要做内容映射
                if (@event.SubSystemId != nextEvent.SubSystemId)
                {
                    var mapCode = (await _provideQueries.MapTrackCodesAsync(@event.SubSystemId, nextEvent.SubSystemId, @event.TrackCode))
                        .FirstOrDefault();

                    if (mapCode == null)
                    {
                        // 跨子系统没做映射的轨迹不处理
                        continue;
                    }

                    nextEvent.TrackCode = mapCode;
                }

                var identifiers = group.Select(x => new OrderIdentifier
                {
                    OrderId = x.OrderId,
                    OrderNo = x.OrderNo,
                    OrderType = x.OrderType,
                }).ToList();
                var idx = 0;
                while (idx < identifiers.Count)
                {
                    var subEvent = nextEvent.DeepCopy();
                    var cnt = idx + GlobalConst.ChunkSize > identifiers.Count
                        ? identifiers.Count - idx
                        : GlobalConst.ChunkSize;
                    subEvent.OrderIdentifiers = identifiers.GetRange(idx, cnt).ToArray();
                    idx += GlobalConst.ChunkSize;

                    await _capPublisher.PublishAsync(GlobalConst.TrackUpsertSubscribe, subEvent);
                }
            }
        }
    }

    private static bool CanDelete(TrackUpsertEvent @event)
    {
        // 系统创建的轨迹不允许修改
        if (@event.Visited.IsNullOrEmpty() && @event is { OperationMan: GlobalConst.SystemUser, IsAdd: false })
        {
            LogHelper.Warn($"系统创建的轨迹不允许被修改：{@event}", true);
            return false;
        }

        var orderIds = @event.OrderIdentifiers.Select(x => x.OrderId).ToArray();

        var dup = @event.Visited.Intersect(orderIds).ToArray();
        if (dup.Any())
        {
            LogHelper.Warn($"{(@event.IsAdd ? "添加" : "修改")}轨迹时，发现循环依赖：{dup.JoinAsString(",")}", true);
            return false;
        }

        return true;
    }

    private async Task<TrackContentVO?> HandleTrackAsync(TrackUpsertEvent @event, List<int> canNextOrderIds)
    {
        var trackContent = await _provideQueries.GetTrackContentAsync(@event.SubSystemId, @event.TrackCode);

        if (trackContent == null)
        {
            // 找不到轨迹内容，直接结束
            LogHelper.Warn($"找不到轨迹内容：{@event}", true);
            return null;
        }

        //#7001:未来潜在需求，当轨迹内容匹配预设，记录一个标记，保证下刷过程都是使用预设内容
        //虽然在引发事件之前做了判断，引发之后并不一定立即处理，在此过程中轨迹内容仍然可能被修改，所以要二次进行判断。
        //通过来源指示是否为手动操作
        var manualOperation = @event.Source == (int) TrackSourceEnum.Artificial;
        //轨迹内容标识不允许手动创建的
        if (manualOperation && @event.IsAdd && trackContent.IsAllowManuallyCreate == false) return trackContent;
        //轨迹内容标识不允许手动更新的
        if (manualOperation && !@event.IsAdd && trackContent.IsAllowManuallyUpdate == false) return trackContent;

        // k:[orderId] v:[k:EsId,v:Version]
        var orderIdEsIdVersionDict = new Dictionary<int, KeyValuePair<string, long>>();

        var insertTracks = await UpsertTrackAsync(@event, canNextOrderIds, trackContent, orderIdEsIdVersionDict);

        if (canNextOrderIds.Count == 0) return trackContent;

        if (insertTracks.Any())
        {
            // 批量add to es tips:注意副作用填充版本号
            await _trackDetailsEsRepository.AddManyAsync(insertTracks);

            // es新增后填充版本号字典
            insertTracks.ForEach(t => orderIdEsIdVersionDict.Add(t.OrderId, KeyValuePair.Create(t.Id, t.Version)));

            //批量写入订单操作日志
            _ = _orderOperationRecordEsRepository.AddManyAsync(insertTracks.Select(t => BuildOrderOperationRecord(@event, t, new OrderIdentifier
            {
                OrderNo = t.OrderNo,
                OrderId = t.OrderId
            })).ToList());

            // 添加轨迹触发订单拉取状态更新
            await _orderRepository.UpdatePullStatusToSilenceAsync(insertTracks.Select(x => x.OrderId).ToList(),
                @event.TrackCode);

            // todo:引发预警计算 改MQ批量+分流
            WarningCalc_AddedTrack(insertTracks);

            // 添加轨迹触发预警计算（异步）todo:弃用
            // await _capPublisher.PublishAsync(GlobalConst.TrackWarningCalcSubscribe, new TrackWarningCalcEvent
            // {
            //     SubSystemId = @event.SubSystemId,
            //     CustomId = @event.CustomId,
            //     OrderIds = insertTracks.Select(x => x.OrderId).ToArray(),
            //     TrackStatusId = trackContent.TrackStatusId,
            //     TrackTime = @event.TrackTime,
            // });
        }

        // 触发订单主表更新事件（异步）
        await _capPublisher.PublishAsync(GlobalConst.TrackChangeAfterUpdateOrderSubscribe,
            new TrackChangeAfterUpdateOrderEvent
            {
                OrderIds = canNextOrderIds.ToArray(),
                IsCompleted = trackContent.IsCompleted,
                TrackStatus = trackContent.TrackStatus,
                TrackContent = trackContent.TrackContent,
                TrackEnContent = trackContent.TrackEnContent,
                TrackPlace = @event.TrackPlace,
                TrackTime = @event.NewTrackTime ?? @event.TrackTime,
                TrackTimeZone = @event.TrackTimeZone,
                DestinationTimeZone = @event.DestinationTimeZone,
                EstimatedDeliveryDate = @event.EstimatedDeliveryDate
            });

        // 触发轨迹推送事件（异步）
        // tips:同一个轨迹内容，多个订单多条轨迹
        var trackPushEvent = new TrackPushEvent
        {
            OptionType = @event.IsAdd ? OptionType.新增 : OptionType.修改,
            SubSystemId = @event.SubSystemId,
            SubSystemCode = trackContent.SubSystemCode,
            CustomId = @event.CustomId,
            OrderIdEsIdVersionDict = orderIdEsIdVersionDict,
            TrackCode = @event.TrackCode,
            SystemPushInfo = new SystemPushStruct
            {
                TrackStatusId = trackContent.TrackStatusId,
                TrackStatus = trackContent.TrackStatus,
                TrackContentId = trackContent.TrackContentId,
                TrackContent = trackContent.TrackContent,
                TrackPlace = @event.TrackPlace,
                TrackTime = @event.NewTrackTime ?? @event.TrackTime,
                TrackTimeZone = @event.TrackTimeZone,
                CompareFields = @event.CompareFields,
                Extra = @event.NewExtra ?? @event.Extra
            },
            ForcedPush = @event.ForcedPush,
            IsToMq = (trackContent.IsToMq || @event.IsToMq)
        };
        await _capPublisher.PublishAsync(GlobalConst.TrackPushSubscribe, trackPushEvent);

        return trackContent;
    }

    private async Task<List<TrackDetailsIndex>> UpsertTrackAsync(
        TrackUpsertEvent @event,
        List<int> canNextOrderIds,
        TrackContentVO trackContent,
        Dictionary<int, KeyValuePair<string, long>> orderIdEsIdVersionDict
    )
    {
        var orderIds = @event.OrderIdentifiers.Select(x => x.OrderId).ToArray();

        // important：轨迹code相同，时间、发生地不同的，可能存在多条！！
        var tracks = await _trackDetailsEsRepository.GetListAsync(orderIds, @event.TrackCode, true);

        var insertTracks = new List<TrackDetailsIndex>();
        var updateTracks = new List<TrackDetailsIndex>();
        var operationRecords = new List<OrderOperationRecordIndex>();
        var traceLog = new Dictionary<string, object>
        {
            { "@event", @event.ToJson() }
        };
        foreach (var order in @event.OrderIdentifiers)
        {
            // fast path: by update with es id case
            if (!@event.IsAdd && !string.IsNullOrWhiteSpace(@event.EsId))
            {
                var trackById = tracks.FirstOrDefault(x => x.Id == @event.EsId);
                if (trackById != null)
                {
                    updateTracks.Add(BuiltUpdateTrack(@event, trackById, order, trackContent));
                }

                continue;
            }

            var existTracks = tracks.Where(x => x.OrderId == order.OrderId).ToList();

            // tips:如果没传时区则使用+8兜底进行过滤
            var timezone = Math.Abs(@event.TrackTimeZone - GlobalConst.NoneTrackTimeZone) < 0.01f ? 8.0f : @event.TrackTimeZone;

            // todo-remove:为了照顾FBA老逻辑，暂时特殊处理一下
            var trackFirst = tracks.FirstOrDefault();
            if (trackFirst?.SubSystemId == 9517)
            {
                existTracks = @event.IsAdd
                    ? tracks.Where(x => x.TrackTime == (@event.NewTrackTime ?? @event.TrackTime)).ToList()
                    : tracks.Where(x =>
                        x.TrackTime == @event.TrackTime
                        // 修改了时间，要校验修改后的时间是否存在
                        || (@event.NewTrackTime != null && x.TrackTime == @event.NewTrackTime)
                    ).ToList();
            }
            else
            {
                // 根据时间过滤
                existTracks = @event.IsAdd
                    ? existTracks.Where(x => x.GetUtc0TrackTime() == (@event.NewTrackTime ?? @event.TrackTime).Subtract(TimeSpan.FromHours(timezone))).ToList()
                    : existTracks.Where(x =>
                        x.GetUtc0TrackTime() == @event.TrackTime.Subtract(TimeSpan.FromHours(timezone))
                        // 修改了时间，要校验修改后的时间是否存在
                        || (@event.NewTrackTime != null && x.GetUtc0TrackTime() == @event.NewTrackTime.Value.Subtract(TimeSpan.FromHours(timezone)))
                    ).ToList();
            }

            // 根据扩展信息过滤
            existTracks = @event.IsAdd
                ? existTracks.Where(x => x.Extra == (@event.NewExtra ?? @event.Extra)).ToList()
                : existTracks.Where(x =>
                    x.Extra == @event.Extra
                    // 修改了extra，要校验修改后的extra是否存在
                    || (!string.IsNullOrWhiteSpace(@event.NewExtra) && x.Extra == @event.NewExtra)).ToList();

            if (@event.IsAdd)
            {
                if (existTracks.Count > 0)
                {
                    _logger.LogInformation("订单已经存在不允许重复的轨迹，不允许重复添加：{@event}", @event);
                    traceLog.Add($"OrderNo-{order.OrderNo}", "订单已经存在不允许重复的轨迹，不允许重复添加");
                    continue;
                }

                insertTracks.Add(BuiltNewTrack(@event, order, trackContent));
            }
            else
            {
                // 不存在不让改
                if (existTracks.Count == 0)
                {
                    _logger.LogInformation("订单不存在轨迹，不允许修改：{@event}", @event);
                    traceLog.Add($"OrderNo-{order.OrderNo}", "订单不存在轨迹，不允许修改");
                    continue;
                }

                if (existTracks.Count > 1)
                {
                    _logger.LogInformation("订单存在多条轨迹不允许修改：{@event}", @event);
                    traceLog.Add($"OrderNo-{order.OrderNo}", "订单存在多条轨迹不允许修改");
                    continue;
                }

                var track = existTracks.First();
                updateTracks.Add(BuiltUpdateTrack(@event, track, order, trackContent));
                operationRecords.Add(BuildOrderOperationRecord(@event, track, order));
            }


            canNextOrderIds.Add(order.OrderId);
        }

        ActivityHelper.StartSpanActivity("UpsertTrackAsync", traceLog);

        if (updateTracks.Any())
        {
            // 批量差异化更新轨迹
            await _trackDetailsEsRepository.BulkUpdateAsync(updateTracks);
            // 获取更新后的版本号
            updateTracks.ForEach(x => orderIdEsIdVersionDict.Add(x.OrderId, KeyValuePair.Create(x.Id, x.Version)));
            // 批量写入操作日志
            _ = _orderOperationRecordEsRepository.AddManyAsync(operationRecords);

            // todo:引发预警计算 改MQ批量+分流
            WarningCalc_UpdatedTrack(updateTracks);
        }

        return insertTracks;
    }


    private static TrackDetailsIndex BuiltUpdateTrack(TrackUpsertEvent @event, TrackDetailsIndex track, OrderIdentifier order,
        TrackContentVO trackContent)
    {
        //外部轨迹，轨迹发生地，轨迹发生时间，轨迹发生时区，不允许更改
        if (track.Source != (int) TrackSourceEnum.ExternalServiceProvide)
        {
            track.TrackPlace = @event.TrackPlace;
            track.TrackTime = @event.NewTrackTime ?? @event.TrackTime;
            track.TrackTimeZone = @event.TrackTimeZone;
        }

        track.ZeroTrackTime = Math.Abs(track.TrackTimeZone - GlobalConst.NoneTrackTimeZone) < 1
            ? track.TrackTime
            : track.TrackTime.Subtract(TimeSpan.FromHours(track.TrackTimeZone));
        track.UpdateUser = @event.OperationMan ?? GlobalConst.SystemUser;
        track.UpdateTime = DateTime.Now;

        //允许二次修改，在修改了轨迹内容后进行修改轨迹操作，如果输入的轨迹内容则以输入为准
        //跨子系统?
        track.TrackContent = string.IsNullOrWhiteSpace(@event.Content) ? trackContent.TrackContent : @event.Content;
        track.TrackEnContent = string.IsNullOrWhiteSpace(@event.EnStatus) ? trackContent.TrackEnContent : @event.EnStatus;
        //当传入的IsExternal为空，则使用轨迹内容中的IsExternal
        track.IsExternal = @event.IsExternal ?? trackContent.IsExternal;
        track.Remarks = @event.Remarks ?? GlobalConst.EmptyString;
        track.Files = @event.Files?.Select(x => new FileItem
        {
            OssKey = x.OssKey,
            FileName = x.FileName
        }).ToList();
        track.TrackPlaceCity = @event.TrackPlaceCity ?? GlobalConst.EmptyString;
        track.TrackPlaceCityId = @event.TrackPlaceCityId ?? GlobalConst.NotExistId;
        track.TrackPlaceProvince = @event.TrackPlaceProvince ?? GlobalConst.EmptyString;
        track.TrackPlaceProvinceId = @event.TrackPlaceProvinceId ?? GlobalConst.NotExistId;
        track.TrackPlaceNation = @event.TrackPlaceNation ?? GlobalConst.EmptyString;
        track.TrackPlaceNationId = @event.TrackPlaceNationId ?? GlobalConst.NotExistId;
        track.TrackPlacePostcode = @event.TrackPlacePostcode ?? GlobalConst.EmptyString;
        track.DestinationTimeZone = @event.DestinationTimeZone;
        track.EstimatedDeliveryDate = @event.EstimatedDeliveryDate;
        track.Extra = @event.NewExtra ?? @event.Extra;

        return track;
    }

    private static TrackDetailsIndex BuiltNewTrack(TrackUpsertEvent @event, OrderIdentifier order, TrackContentVO trackContent)
    {
        var track = new TrackDetailsIndex
        {
            SubSystemId = @event.SubSystemId,
            OrderId = order.OrderId,
            OrderNo = order.OrderNo,
            OrderType = order.OrderType,
            TrackCode = @event.TrackCode,
            TrackPlace = @event.TrackPlace,
            TrackTime = @event.NewTrackTime ?? @event.TrackTime,
            TrackTimeZone = @event.TrackTimeZone,
            ServiceProviderCode = @event.TrackRefreshData.ServiceProviderCode ?? GlobalConst.EmptyString,
            OriginTrackContent = @event.TrackRefreshData.OriginTrackContent ?? GlobalConst.EmptyString,
            OriginTrackDataHash = @event.TrackRefreshData.OriginTrackDataHash ?? GlobalConst.EmptyString,
            CreateUser = @event.OperationMan ?? GlobalConst.SystemUser,
            CreateTime = DateTime.Now,
            //来源轨迹内容,第一次新增的时候使用轨迹内容表提供的
            TrackStatusId = trackContent.TrackStatusId,
            TrackStatus = trackContent.TrackStatus,
            TrackStatusCode = trackContent.TrackStatusCode,
            //跨子系统?
            TrackContentId = trackContent.TrackContentId,
            TrackContent = string.IsNullOrWhiteSpace(@event.Content) ? trackContent.TrackContent : @event.Content,
            TrackEnContent = string.IsNullOrWhiteSpace(@event.EnStatus) ? trackContent.TrackEnContent : @event.EnStatus,
            //当传入的IsExternal为空，则使用轨迹内容中的IsExternal
            IsExternal = @event.IsExternal ?? trackContent.IsExternal,
            Source = @event.Source,
            Remarks = @event.Remarks ?? GlobalConst.EmptyString,
            Files = @event.Files?.Select(x => new FileItem
            {
                OssKey = x.OssKey,
                FileName = x.FileName
            }).ToList(),
            TrackPlaceCity = @event.TrackPlaceCity ?? GlobalConst.EmptyString,
            TrackPlaceCityId = @event.TrackPlaceCityId ?? GlobalConst.NotExistId,
            TrackPlaceProvince = @event.TrackPlaceProvince ?? GlobalConst.EmptyString,
            TrackPlaceProvinceId = @event.TrackPlaceProvinceId ?? GlobalConst.NotExistId,
            TrackPlaceNation = @event.TrackPlaceNation ?? GlobalConst.EmptyString,
            TrackPlaceNationId = @event.TrackPlaceNationId ?? GlobalConst.NotExistId,
            TrackPlacePostcode = @event.TrackPlacePostcode ?? GlobalConst.EmptyString,
            DestinationTimeZone = @event.DestinationTimeZone,
            EstimatedDeliveryDate = @event.EstimatedDeliveryDate,
            Extra = @event.NewExtra ?? @event.Extra,
        };

        track.ZeroTrackTime = Math.Abs(track.TrackTimeZone - GlobalConst.NoneTrackTimeZone) < 1
            ? track.TrackTime
            : track.TrackTime.Subtract(TimeSpan.FromHours(track.TrackTimeZone));

        return track;
    }

    private static OrderOperationRecordIndex BuildOrderOperationRecord(TrackUpsertEvent @event, TrackDetailsIndex track, OrderIdentifier order)
    {
        return new OrderOperationRecordIndex
        {
            OrderId = order.OrderId,
            OrderNo = order.OrderNo,
            OptionType = @event.IsAdd ? OrderOperationType.创建轨迹.ToString() : OrderOperationType.修改轨迹.ToString(),
            Content = track.ToJson(),
            CreateUserId = @event.OperationManId,
            CreateUserName = @event.OperationMan ?? "",
            CreateTime = DateTime.Now
        };
    }

    private async Task EnsureWriteAfterPublicTopicAsync(TrackUpsertEvent @event, bool contentIsExternal, string subSystemCode, string statusCode)
    {
        //理想情况在写入之后1s会刷盘 https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-refresh.html
        //增加一个版本号来确定是否真的变更了
        //没有刷盘成功事件回调
        //方案1：!!【轮询等待静默刷盘】查出版本号确实发生了变更在发送广播
        //方案2：考虑强制刷盘（对es压力大）后发送
        //方案3：采用一个较大延时，不查询直接发
        await Task.Delay(1000);
        _broadcastingService.TrackChangePublicTopic(@event, contentIsExternal, subSystemCode, statusCode);
    }

    private void WarningCalc_AddedTrack(List<TrackDetailsIndex> tracks)
    {
        _warningSignalPublisher.PublishSignal(WarningSignalType.轨迹新增, tracks);
    }


    private void WarningCalc_UpdatedTrack(List<TrackDetailsIndex> tracks)
    {
        _warningSignalPublisher.PublishSignal(WarningSignalType.轨迹更新, tracks);
    }
}