using System;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Controls;
using Newtonsoft.Json.Linq;

namespace YKC
{
    public partial class GatewayPage : Page
    {
        private static readonly Regex IpRegex = new Regex(
            @"^(?:(?:25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)\.){3}(?:25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)$");
        private static readonly Regex DomainRegex = new Regex(
            @"^(?!-)[A-Za-z0-9-]{1,63}(?<!-)(\.[A-Za-z]{2,})+$");

        public GatewayPage()
        {
            InitializeComponent();
            Loaded += (s, e) =>
            {
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    if (txtGwId != null) RefreshAll();
                }), System.Windows.Threading.DispatcherPriority.Background);
            };
        }

        private bool IsValidIp(string s) => IpRegex.IsMatch(s);
        private bool IsValidDomain(string s) => DomainRegex.IsMatch(s);
        private bool IsValidHost(string s) => IsValidIp(s) || IsValidDomain(s);

        private void ShowResult(TextBlock el, string msg, bool ok)
        {
            el.Text = msg;
            el.Foreground = new System.Windows.Media.SolidColorBrush(
                (System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString(
                    ok ? "#10B981" : "#EF4444"));
            var timer = new System.Windows.Threading.DispatcherTimer { Interval = TimeSpan.FromSeconds(3) };
            timer.Tick += (s, _) => { el.Text = ""; timer.Stop(); };
            timer.Start();
        }

        private string FormatUptime(int sec)
        {
            if (sec <= 0) return "--";
            int d = sec / 86400;
            int h = (sec % 86400) / 3600;
            int m = (sec % 3600) / 60;
            string result = "";
            if (d > 0) result += d + "天";
            if (h > 0) result += h + "时";
            if (m > 0) result += m + "分";
            return result.Length > 0 ? result : sec + "秒";
        }

        private void RefreshAll()
        {
            RefreshGwInfo();
            Refresh4G();
        }

        private async void RefreshGwInfo()
        {
            txtGwStatus.Text = "加载中...";
            txtGwStatus.Foreground = new System.Windows.Media.SolidColorBrush(
                (System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#64748B"));
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject { ["cmd"] = Config.Cmd["GET_GW_INFO"] });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    if (result.Value<bool>("success") && result["device_id"] != null)
                    {
                        txtGwId.Text = result.Value<string>("device_id") ?? "--";
                        txtGwSw.Text = result.Value<string>("software_ver") ?? result.Value<string>("sw_ver") ?? "--";
                        txtGwHw.Text = result.Value<string>("hardware_ver") ?? result.Value<string>("hw_ver") ?? "--";
                        txtGwUptime.Text = FormatUptime(result.Value<int?>("uptime") ?? 0);
                        txtGwStatus.Text = "";
                    }
                    else
                    {
                        txtGwId.Text = "--"; txtGwSw.Text = "--"; txtGwHw.Text = "--"; txtGwUptime.Text = "--";
                        ShowResult(txtGwStatus, result.Value<string>("error") ?? "查询超时", false);
                    }
                }));
            });
        }

        private async void Refresh4G()
        {
            txt4GStatus.Text = "加载中...";
            txt4GStatus.Foreground = new System.Windows.Media.SolidColorBrush(
                (System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#64748B"));
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject { ["cmd"] = Config.Cmd["GET_4G_STATUS"] });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    if (result.Value<bool>("success") && result["sim"] != null)
                    {
                        txtSim.Text = result.Value<string>("sim") ?? result.Value<string>("iccid") ?? "--";
                        txtNetStatus.Text = result.Value<string>("net_status") ?? result.Value<string>("status_text") ?? "--";
                        txtSignal.Text = result.Value<string>("signal") != null ? result.Value<int>("signal") + " dBm" : "--";
                        txtIsp.Text = result.Value<string>("isp") ?? result.Value<string>("operator") ?? "--";
                        txt4GStatus.Text = "";
                    }
                    else
                    {
                        txtSim.Text = "--"; txtNetStatus.Text = "--"; txtSignal.Text = "--"; txtIsp.Text = "--";
                        ShowResult(txt4GStatus, result.Value<string>("error") ?? "查询超时", false);
                    }
                }));
            });
        }

        private void RefreshGwInfo_Click(object sender, RoutedEventArgs e) => RefreshGwInfo();
        private void Refresh4G_Click(object sender, RoutedEventArgs e) => Refresh4G();

        private async void LoadCloudConfig_Click(object sender, RoutedEventArgs e)
        {
            txtCloudResult.Text = "加载中...";
            txtCloudResult.Foreground = new System.Windows.Media.SolidColorBrush(
                (System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#64748B"));
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject { ["cmd"] = Config.Cmd["GET_CLOUD_CONFIG"] });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    txtCloudResult.Text = "";
                    if (result.Value<bool>("success") && result["host"] != null)
                    {
                        txtCloudHost.Text = result.Value<string>("host") ?? "";
                        txtCloudPort.Text = result.Value<string>("port") ?? result.Value<int?>("port")?.ToString() ?? "";
                    }
                    else
                    {
                        ShowResult(txtCloudResult, result.Value<string>("error") ?? "查询超时", false);
                    }
                }));
            });
        }

        private async void SaveCloudConfig_Click(object sender, RoutedEventArgs e)
        {
            string host = txtCloudHost.Text.Trim();
            string port = txtCloudPort.Text.Trim();

            if (string.IsNullOrEmpty(host)) { ShowResult(txtCloudResult, "请输入服务器地址", false); return; }
            if (!IsValidHost(host)) { ShowResult(txtCloudResult, "地址格式错误", false); return; }
            if (string.IsNullOrEmpty(port) || !int.TryParse(port, out int p) || p < 1 || p > 65535)
            { ShowResult(txtCloudResult, "端口范围 1-65535", false); return; }

            ShowResult(txtCloudResult, "保存中...", true);
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject
                {
                    ["cmd"] = Config.Cmd["SET_CLOUD_CONFIG"],
                    ["host"] = host,
                    ["port"] = p
                });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    ShowResult(txtCloudResult, result.Value<bool>("success") ? "保存成功" : (result.Value<string>("error") ?? "失败"), result.Value<bool>("success"));
                }));
            });
        }

        private async void LoadNetConfig_Click(object sender, RoutedEventArgs e)
        {
            txtNetResult.Text = "加载中...";
            txtNetResult.Foreground = new System.Windows.Media.SolidColorBrush(
                (System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString("#64748B"));
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject { ["cmd"] = Config.Cmd["GET_NET_CONFIG"] });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    txtNetResult.Text = "";
                    if (result.Value<bool>("success") && result["ip"] != null)
                    {
                        txtNetIp.Text = result.Value<string>("ip") ?? "";
                        txtNetMask.Text = result.Value<string>("mask") ?? result.Value<string>("netmask") ?? "";
                        txtNetGw.Text = result.Value<string>("gateway") ?? result.Value<string>("gw") ?? "";
                        txtNetDns.Text = result.Value<string>("dns") ?? "";
                    }
                    else
                    {
                        ShowResult(txtNetResult, result.Value<string>("error") ?? "查询超时", false);
                    }
                }));
            });
        }

        private async void SaveNetConfig_Click(object sender, RoutedEventArgs e)
        {
            string ip = txtNetIp.Text.Trim();
            string mask = txtNetMask.Text.Trim();
            string gw = txtNetGw.Text.Trim();
            string dns = txtNetDns.Text.Trim();

            if (string.IsNullOrEmpty(ip)) { ShowResult(txtNetResult, "请输入IP地址", false); return; }
            if (!IsValidIp(ip)) { ShowResult(txtNetResult, "IP格式错误", false); return; }
            if (string.IsNullOrEmpty(mask)) { ShowResult(txtNetResult, "请输入子网掩码", false); return; }
            if (!IsValidIp(mask)) { ShowResult(txtNetResult, "掩码格式错误", false); return; }
            if (!string.IsNullOrEmpty(gw) && !IsValidIp(gw)) { ShowResult(txtNetResult, "网关格式错误", false); return; }
            if (!string.IsNullOrEmpty(dns) && !IsValidIp(dns)) { ShowResult(txtNetResult, "DNS格式错误", false); return; }

            ShowResult(txtNetResult, "保存中...", true);
            await System.Threading.Tasks.Task.Run(() =>
            {
                var result = UdpClientHolder.Instance.SendSync(new JObject
                {
                    ["cmd"] = Config.Cmd["SET_NET_CONFIG"],
                    ["ip"] = ip,
                    ["mask"] = mask,
                    ["gateway"] = gw,
                    ["dns"] = dns
                });
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    ShowResult(txtNetResult, result.Value<bool>("success") ? "保存成功，重启生效" : (result.Value<string>("error") ?? "失败"), result.Value<bool>("success"));
                }));
            });
        }
    }
}