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

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 * * * * ?")
/// 
/// 设备与网关的关联通过 AdapterCode 前缀匹配（如设备 AdapterCode="MC4:31ku" 匹配网关 AdapterTypes="MC4:31ku"）。
/// </summary>
public class HeartbeatMonitorJob : IJob
{
    public async Task Execute(IJobExecutionContext context)
    {
        var sp = (IServiceProvider)context.JobDetail.JobDataMap["ServiceProvider"];
        if (sp == null) return;

        var gwSvc = sp.GetService<Igateway_nodesService>();
        var gwRepo = sp.GetService<Igateway_nodesRepository>();
        var devRepo = sp.GetService<Ibase_deviceRepository>();
        if (gwSvc == null || gwRepo == null || devRepo == 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";
            try { gwRepo.Update(node); } catch { }
            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（批量 SQL）
            try
            {
                var adapterPrefixes = (node.AdapterTypes ?? "")
                    .Split(',', StringSplitOptions.RemoveEmptyEntries)
                    .Select(t => t.Trim()).ToList();

                if (adapterPrefixes.Any())
                {
                    var allDevices = await devRepo.FindAsIQueryable(
                        d => d.IsOnline == "在线").ToListAsync();
                    var matched = allDevices
                        .Where(d => adapterPrefixes.Any(p => (d.AdapterCode ?? "").StartsWith(p)))
                        .ToList();

                    if (matched.Any())
                    {
                        foreach (var dev in matched) dev.IsOnline = "离线";
                        devRepo.UpdateRange(matched);
                        Console.WriteLine($"[HeartbeatMonitorJob] 级联 {matched.Count} 台设备离线");
                    }
                }
            }
            catch (Exception ex)
            {
                Console.Error.WriteLine($"[HeartbeatMonitorJob] 级联离线失败: {ex.Message}");
            }
        }
    }
}