using Prism.Events;
using System.Text.Json;
using YY.Admin.Core;
using YY.Admin.Core.Events;
using YY.Admin.Core.Services;

namespace YY.Admin.Services.Service.MixerMaterialTareStrategy;

public class MixerMaterialTareStrategySyncCoordinator : ISingletonDependency
{
    private readonly IEventAggregator _eventAggregator;
    private readonly ILoggerService _logger;

    public MixerMaterialTareStrategySyncCoordinator(
        IEventAggregator eventAggregator,
        SyncPollManager pollManager,
        ILoggerService logger)
    {
        _eventAggregator = eventAggregator;
        _logger = logger;
        _eventAggregator.GetEvent<RemoteCommandReceivedEvent>()
            .Subscribe(OnRemoteCommand, ThreadOption.BackgroundThread);
        _eventAggregator.GetEvent<NetworkStatusChangedEvent>()
            .Subscribe(OnNetworkStatusChanged, ThreadOption.BackgroundThread);

        pollManager.Register("密炼物料皮重策略", () =>
        {
            _eventAggregator.GetEvent<MixerMaterialTareStrategyChangedEvent>()
                .Publish(new MixerMaterialTareStrategyChangedPayload { Action = "poll" });
            return Task.CompletedTask;
        });

        _logger.Information("[密炼物料皮重策略推送] MixerMaterialTareStrategySyncCoordinator 已启动");
    }

    private void OnNetworkStatusChanged(NetworkStatusChangedPayload payload)
    {
        if (!payload.IsOnline) return;
        _logger.Information("[密炼物料皮重策略推送] 网络恢复，触发补偿刷新");
        _eventAggregator.GetEvent<MixerMaterialTareStrategyChangedEvent>()
            .Publish(new MixerMaterialTareStrategyChangedPayload { Action = "reconnect" });
    }

    private void OnRemoteCommand(RemoteCommandPayload payload)
    {
        try
        {
            var json = payload.CommandJson ?? string.Empty;
            if (string.IsNullOrWhiteSpace(json)) return;

            using var doc = JsonDocument.Parse(json);
            if (!doc.RootElement.TryGetProperty("cmd", out var cmdEl)) return;
            if (!cmdEl.GetString().Equals("MES_MIXER_MATERIAL_TARE_STRATEGY_CHANGED", StringComparison.OrdinalIgnoreCase))
                return;

            doc.RootElement.TryGetProperty("action", out var actionEl);
            doc.RootElement.TryGetProperty("tareStrategyId", out var idEl);

            var changed = new MixerMaterialTareStrategyChangedPayload
            {
                Action = actionEl.GetString() ?? string.Empty,
                TareStrategyId = idEl.ValueKind == JsonValueKind.String ? idEl.GetString() : null
            };
            _logger.Information($"[密炼物料皮重策略推送] action={changed.Action}, tareStrategyId={changed.TareStrategyId}");
            _eventAggregator.GetEvent<MixerMaterialTareStrategyChangedEvent>().Publish(changed);
        }
        catch (Exception ex)
        {
            _logger.Warning($"[密炼物料皮重策略推送] 处理STOMP命令失败：{ex.Message}");
        }
    }
}