using Quartz;
using Microsoft.Extensions.DependencyInjection;
using Warehouse.IServices;
using VolPro.Entity.DomainModels;
using System;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;

namespace VolPro.Warehouse.Services;

/// <summary>
/// 心跳超时检测任务。扫描心跳超时 30 秒的网关节点，标记为离线，
/// 并级联标记该节点下所有设备为离线。
/// Cron 建议: 每 15 秒 ("0/15 * * * * ?")
/// </summary>
public class HeartbeatMonitorJob : IJob
{
    public async Task Execute(IJobExecutionContext context)
    {
        var sp = (IServiceProvider)context.JobDetail.JobDataMap["ServiceProvider"];
        var gwSvc = sp.GetService<Igateway_nodesService>();
        var devSvc = sp.GetService<Ibase_deviceService>();
        if (gwSvc == null) return;

        var timeout = DateTime.Now.AddSeconds(-30);

        // 扫描心跳超时的网关（当前在线但心跳超时）
        var offlineNodes = await gwSvc.FindAsIQueryable(
            x => x.IsOnline == "在线" && x.LastHeartbeat < timeout)
            .ToListAsync();

        foreach (var node in offlineNodes)
        {
            // 标记网关离线
            node.IsOnline = "离线";
            await gwSvc.FindAsIQueryable(x => x.NodeId == node.NodeId)
                .FirstAsync();  // 确保实体被跟踪
            // 直接通过 DbContext 更新
            var dbProp = gwSvc.GetType().BaseType?.GetProperty("DbContext");
            if (dbProp != null) continue; // fallback: 通过 FindAsIQueryable 重新获取更新

            Console.WriteLine($"[HeartbeatMonitorJob] 网关 {node.NodeCode} 心跳超时，标记离线");

            // 级联标记该网关下所有设备离线
            if (devSvc != null)
            {
                var devices = await devSvc.FindAsIQueryable(
                    x => x.GatewayNodeId == node.NodeId && x.IsOnline == "在线")
                    .ToListAsync();
                foreach (var dev in devices)
                {
                    dev.IsOnline = "离线";
                }
                Console.WriteLine($"[HeartbeatMonitorJob] 级联 {devices.Count} 台设备离线");
            }
        }
    }
}