using System;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using Newtonsoft.Json.Linq;
using OxyPlot;

namespace YKC
{
    public partial class DashboardPage : Page
    {
        private Timer _timer;

        public class PileRow
        {
            public int Index { get; set; }
            public string Serial { get; set; } = "--";
            public string StatusText { get; set; } = "--";
            public string Gun1Text { get; set; } = "--";
            public string Gun2Text { get; set; } = "--";
        }

        public ObservableCollection<PileRow> Rows { get; } = new ObservableCollection<PileRow>();

        public DashboardPage()
        {
            InitializeComponent();
            dgPiles.ItemsSource = Rows;
            Loaded += (s, e) =>
            {
                Dispatcher.BeginInvoke(new Action(() => RefreshData()),
                    System.Windows.Threading.DispatcherPriority.Background);
                _timer = new Timer((_) => Dispatcher.BeginInvoke(new Action(RefreshData)), null, 5000, 5000);
            };
            Unloaded += (s, e) => _timer?.Dispose();
        }

        private void Refresh_Click(object sender, RoutedEventArgs e) => RefreshData();

        private void RefreshData()
        {
            try
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject
                {
                    ["cmd"] = Config.Cmd["GET_STATUS"]
                });
                if (result.Value<bool>("success") == false && result["piles"] == null)
                {
                    Dispatcher.BeginInvoke(new Action(() => txtConnStatus.Text = "无响应"));
                    return;
                }

                Dispatcher.BeginInvoke(new Action(() => txtConnStatus.Text = "在线"));

                var piles = result["piles"] as JArray ?? new JArray();
                int online = 0, charging = 0;
                var rows = new ObservableCollection<PileRow>();

                foreach (var p in piles)
                {
                    bool isOnline = p.Value<bool>("is_online");
                    if (isOnline) online++;

                    var guns = p["guns"] as JArray ?? new JArray();
                    foreach (var g in guns)
                        if (g.Value<int?>("status") == 3) charging++;

                    rows.Add(new PileRow
                    {
                        Index = rows.Count + 1,
                        Serial = p.Value<string>("serial") ?? "--",
                        StatusText = isOnline ? "在线" : "离线",
                        Gun1Text = guns.Count > 0 ? GunStatusText(guns[0].Value<int>("status")) : "--",
                        Gun2Text = guns.Count > 1 ? GunStatusText(guns[1].Value<int>("status")) : "--",
                    });
                }

                Dispatcher.BeginInvoke(new Action(() =>
                {
                    txtOnlineCount.Text = online.ToString();
                    txtChargingCount.Text = charging.ToString();
                    Rows.Clear();
                    foreach (var r in rows) Rows.Add(r);
                }));
            }
            catch { }
        }

        private string GunStatusText(int status)
        {
            switch (status)
            {
                case 0: return "离线";
                case 1: return "故障";
                case 2: return "空闲";
                case 3: return "充电中";
                default: return status.ToString();
            }
        }
    }
}