using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Globalization;
using System.Windows.Forms;

namespace ClaudeProxy
{
    class BufferedPanel : Panel { public BufferedPanel() { DoubleBuffered = true; } }

    class MainForm : Form
    {
        // palette
        static Color Cream = Color.FromArgb(250, 249, 245), Ink = Color.FromArgb(41, 40, 36),
            Head = Color.FromArgb(26, 25, 21), Muted = Color.FromArgb(131, 129, 123),
            Card = Color.FromArgb(255, 255, 255), Border = Color.FromArgb(232, 229, 220),
            Coral = Color.FromArgb(193, 95, 60), CoralLo = Color.FromArgb(224, 137, 101),
            CoralHi = Color.FromArgb(168, 79, 48), TrackOff = Color.FromArgb(206, 202, 192),
            OkC = Color.FromArgb(74, 122, 80), RedC = Color.FromArgb(196, 74, 61),
            Glyph = Color.FromArgb(248, 246, 239);
        Font fReg = new Font("Segoe UI", 9.5f), fSemi = new Font("Segoe UI Semibold", 9.5f),
            fHead = new Font("Segoe UI Semibold", 15f), fSub = new Font("Segoe UI", 9f),
            fPill = new Font("Segoe UI Semibold", 12f), fMono = new Font("Consolas", 8.5f);

        bool switchOn = false, busy = false;
        RadioButton rbProxy, rbVless, rbAwg;
        BufferedPanel mark, tgl, card;
        Label title, subtitle, lblFieldCap, lblReach, rDot, lblFwCap, lblFw, lblClCap, lblCl, lblXrayCap, lblXray;
        TextBox txtField, log;
        CheckBox chkRestart, chkFail;
        Button btnSave, btnLaunch, btnVerify, btnRefresh, btnXray;
        Panel sep;
        Timer timer;

        string Mode { get { return rbAwg.Checked ? "awg" : (rbVless.Checked ? "vless" : "proxy"); } }

        public MainForm()
        {
            Text = "Claude Proxy";
            AutoScaleMode = AutoScaleMode.None;
            ClientSize = new Size(452, 512);
            StartPosition = FormStartPosition.CenterScreen;
            FormBorderStyle = FormBorderStyle.FixedSingle;
            MaximizeBox = false;
            BackColor = Cream; ForeColor = Ink; Font = fReg;
            try { Icon = Icon.ExtractAssociatedIcon(Application.ExecutablePath); } catch { }

            mark = new BufferedPanel { Size = new Size(46, 46), Location = new Point(24, 22), BackColor = Cream };
            mark.Paint += (s, e) => PaintTile(e.Graphics, 46);
            Controls.Add(mark);

            title = MkLabel("Claude Proxy", fHead, Head, 82, 22); title.AutoSize = true; Controls.Add(title);
            subtitle = MkLabel("весь трафик Claude через прокси", fSub, Muted, 84, 48);
            subtitle.AutoSize = false; subtitle.Size = new Size(196, 18); Controls.Add(subtitle);

            rbProxy = MkRadio("Прямой прокси", 292, 14);
            rbVless = MkRadio("VLESS + Reality", 292, 36);
            rbAwg = MkRadio("AmneziaWG", 292, 58);
            Controls.Add(rbProxy); Controls.Add(rbVless); Controls.Add(rbAwg);

            tgl = new BufferedPanel { Size = new Size(172, 58), Location = new Point(24, 88), BackColor = Cream, Cursor = Cursors.Hand };
            tgl.Paint += (s, e) => PaintToggle(e.Graphics, tgl.Width, tgl.Height);
            tgl.Click += (s, e) => ToggleSwitch();
            Controls.Add(tgl);

            var hint = MkLabel("Включено = наружу только через прокси, всё остальное заблокировано", fSub, Muted, 208, 92);
            hint.AutoSize = false; hint.Size = new Size(224, 52); Controls.Add(hint);

            // status card
            card = new BufferedPanel { Size = new Size(412, 158), Location = new Point(20, 162), BackColor = Cream };
            card.Paint += (s, e) => { var g = e.Graphics; g.SmoothingMode = SmoothingMode.AntiAlias;
                using (var path = Round(card.Width - 1, card.Height - 1, 14))
                using (var b = new SolidBrush(Card)) using (var pen = new Pen(Border, 1))
                { g.FillPath(b, path); g.DrawPath(pen, path); } };
            Controls.Add(card);

            lblFieldCap = MkLabel("Прокси", fReg, Muted, 18, 18); lblFieldCap.AutoSize = true; card.Controls.Add(lblFieldCap);
            txtField = new TextBox { Location = new Point(84, 15), Size = new Size(214, 24), BorderStyle = BorderStyle.FixedSingle, BackColor = Cream, ForeColor = Ink };
            card.Controls.Add(txtField);
            btnSave = MkButton("Сохранить", 308, 13, 88, 28, false); btnSave.Click += (s, e) => OnSave(); card.Controls.Add(btnSave);

            rDot = MkLabel("●", new Font("Segoe UI", 11f), Muted, 17, 54); rDot.AutoSize = true; card.Controls.Add(rDot);
            lblReach = MkLabel("", fReg, Ink, 38, 56); lblReach.AutoSize = true; card.Controls.Add(lblReach);

            lblXrayCap = MkLabel("Xray-core", fReg, Muted, 18, 68); lblXrayCap.AutoSize = true; card.Controls.Add(lblXrayCap);
            lblXray = MkLabel("", fSemi, Ink, 120, 68); lblXray.AutoSize = true; card.Controls.Add(lblXray);
            btnXray = MkButton("Распаковать", 300, 64, 96, 26, false); btnXray.Click += (s, e) => { if (Mode == "awg") OnBrowseAwg(); else OnXray(); }; card.Controls.Add(btnXray);

            sep = new Panel { Location = new Point(18, 86), Size = new Size(378, 1), BackColor = Border }; card.Controls.Add(sep);
            lblFwCap = MkLabel("Firewall-лок", fReg, Muted, 18, 98); lblFwCap.AutoSize = true; card.Controls.Add(lblFwCap);
            lblFw = MkLabel("", fSemi, Ink, 120, 98); lblFw.AutoSize = true; card.Controls.Add(lblFw);
            lblClCap = MkLabel("Claude", fReg, Muted, 18, 122); lblClCap.AutoSize = true; card.Controls.Add(lblClCap);
            lblCl = MkLabel("", fSemi, Ink, 120, 122); lblCl.AutoSize = true; card.Controls.Add(lblCl);

            chkRestart = new CheckBox { Text = "Перезапускать Claude при переключении", ForeColor = Ink, AutoSize = true, Checked = true, Location = new Point(22, 324), Font = fReg };
            chkFail = new CheckBox { Text = "Fail-closed: блокировать любой трафик мимо прокси (firewall)", ForeColor = Ink, AutoSize = true, Checked = true, Location = new Point(22, 348), Font = fReg };
            Controls.Add(chkRestart); Controls.Add(chkFail);

            btnLaunch = MkButton("Запустить Claude", 20, 384, 170, 36, true); btnLaunch.Click += (s, e) => LaunchProxied(); Controls.Add(btnLaunch);
            btnVerify = MkButton("Проверить", 198, 386, 142, 32, false); btnVerify.Click += (s, e) => OnVerify(); Controls.Add(btnVerify);
            btnRefresh = MkButton("Обновить", 348, 386, 84, 32, false); btnRefresh.Click += (s, e) => { UpdateUi(true); Log("статус обновлён."); }; Controls.Add(btnRefresh);

            log = new TextBox { Multiline = true, ReadOnly = true, ScrollBars = ScrollBars.Vertical, Location = new Point(20, 430), Size = new Size(412, 66), BorderStyle = BorderStyle.FixedSingle, BackColor = Card, ForeColor = Muted, Font = fMono };
            Controls.Add(log);

            EventHandler modeCh = (s, e) => { if (!((RadioButton)s).Checked) return; ApplyModeLayout(); var c = Core.LoadConfig(); c.Mode = Mode; Core.SaveConfig(c); UpdateUi(true); };
            rbVless.CheckedChanged += modeCh; rbAwg.CheckedChanged += modeCh; rbProxy.CheckedChanged += modeCh;

            timer = new Timer { Interval = 4000 };
            timer.Tick += (s, e) => { if (!busy) UpdateUi(false); };
            timer.Start();

            Load += (s, e) => {
                var cfg = Core.LoadConfig();
                chkFail.Checked = cfg.FailClosed;
                if (cfg.Mode == "awg") rbAwg.Checked = true; else if (cfg.Mode == "vless") rbVless.Checked = true; else rbProxy.Checked = true;
                ApplyModeLayout();
                Log("готово. рубильник управляет проксированием Claude.");
                UpdateUi(true);
            };
        }

        // ---- factories ----
        Label MkLabel(string t, Font f, Color c, int x, int y)
        { return new Label { Text = t, Font = f, ForeColor = c, Location = new Point(x, y), BackColor = Color.Transparent }; }
        RadioButton MkRadio(string t, int x, int y)
        { return new RadioButton { Text = t, ForeColor = Ink, Font = fReg, AutoSize = false, TextAlign = ContentAlignment.MiddleLeft, BackColor = Cream, Size = new Size(150, 22), Location = new Point(x, y) }; }
        Button MkButton(string t, int x, int y, int w, int h, bool primary)
        {
            var b = new Button { Text = t, Location = new Point(x, y), Size = new Size(w, h), FlatStyle = FlatStyle.Flat, Cursor = Cursors.Hand };
            b.FlatAppearance.BorderSize = primary ? 0 : 1;
            if (primary) { b.BackColor = Coral; b.ForeColor = Color.White; b.Font = fSemi; b.FlatAppearance.MouseOverBackColor = CoralHi; }
            else { b.BackColor = Card; b.ForeColor = Ink; b.Font = fReg; b.FlatAppearance.BorderColor = Border; b.FlatAppearance.MouseOverBackColor = Cream; }
            b.Region = new Region(Round(w, h, 9));
            b.SizeChanged += (s, e) => { try { b.Region = new Region(Round(b.Width, b.Height, 9)); } catch { } };
            return b;
        }

        static GraphicsPath Round(int w, int h, int r)
        {
            int d = r * 2; var p = new GraphicsPath();
            p.AddArc(0, 0, d, d, 180, 90); p.AddArc(w - d, 0, d, d, 270, 90);
            p.AddArc(w - d, h - d, d, d, 0, 90); p.AddArc(0, h - d, d, d, 90, 90);
            p.CloseFigure(); return p;
        }

        // ---- painting ----
        void PaintTile(Graphics g, int S)
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            using (var path = Round(S - 1, S - 1, 12))
            using (var br = new LinearGradientBrush(new Rectangle(0, 0, S, S), CoralLo, CoralHi, 90f))
                g.FillPath(br, path);
            DrawToggleGlyph(g, S);
        }
        void DrawToggleGlyph(Graphics g, float S)
        {
            float tw = S * 0.58f, th = S * 0.34f, tx = (S - tw) / 2f, ty = (S - th) / 2f;
            using (var tp = new GraphicsPath())
            {
                tp.AddArc(tx, ty, th, th, 90, 180); tp.AddArc(tx + tw - th, ty, th, th, 270, 180); tp.CloseFigure();
                using (var tb = new SolidBrush(Glyph)) g.FillPath(tb, tp);
            }
            float kd = th - S * 0.10f, kx = tx + tw - kd - S * 0.05f, ky = ty + (th - kd) / 2f;
            using (var kb = new SolidBrush(CoralHi)) g.FillEllipse(kb, kx, ky, kd, kd);
        }
        void PaintToggle(Graphics g, int w, int h)
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            using (var path = Round(w, h, h / 2))
            {
                if (switchOn) using (var br = new LinearGradientBrush(new Rectangle(0, 0, w, h), CoralLo, Coral, 0f)) g.FillPath(br, path);
                else using (var br = new SolidBrush(TrackOff)) g.FillPath(br, path);
            }
            int knobD = h - 12, knobX = switchOn ? w - knobD - 6 : 6;
            using (var sh = new SolidBrush(Color.FromArgb(40, 0, 0, 0))) g.FillEllipse(sh, knobX + 1, 7, knobD, knobD);
            using (var kb = new SolidBrush(Color.White)) g.FillEllipse(kb, knobX, 6, knobD, knobD);
            string txt = switchOn ? "ВКЛ" : "ВЫКЛ";
            using (var tb = new SolidBrush(switchOn ? Color.White : Color.FromArgb(106, 104, 98)))
                g.DrawString(txt, fPill, tb, switchOn ? 22 : 66, 16);
        }

        // ---- mode layout ----
        void ApplyModeLayout()
        {
            var cfg = Core.LoadConfig();
            bool tunnel = Mode == "vless" || Mode == "awg";
            lblXrayCap.Visible = lblXray.Visible = btnXray.Visible = tunnel;
            if (tunnel) { sep.Top = 100; lblFwCap.Top = lblFw.Top = 112; lblClCap.Top = lblCl.Top = 134; }
            else { sep.Top = 74; lblFwCap.Top = lblFw.Top = 86; lblClCap.Top = lblCl.Top = 108; }

            if (Mode == "vless")
            {
                lblFieldCap.Text = "VLESS"; subtitle.Text = "через VLESS + Reality тоннель";
                txtField.UseSystemPasswordChar = true; txtField.Text = cfg.Vless ?? "";
                lblXrayCap.Text = "Xray-core"; UpdateXrayStatus();
            }
            else if (Mode == "awg")
            {
                lblFieldCap.Text = "Конфиг"; subtitle.Text = "через AmneziaWG тоннель";
                txtField.UseSystemPasswordChar = false; txtField.Text = cfg.Awg ?? "";
                lblXrayCap.Text = "AmneziaWG"; UpdateAwgStatus();
            }
            else
            {
                lblFieldCap.Text = "Прокси"; subtitle.Text = "весь трафик Claude через прокси";
                txtField.UseSystemPasswordChar = false; txtField.Text = cfg.Proxy ?? "";
            }
        }

        void UpdateXrayStatus()
        {
            if (Core.XrayPresent()) { lblXray.Text = "готов (" + Core.XrayVersion + ")"; lblXray.ForeColor = OkC; btnXray.Text = "Переустановить"; }
            else { lblXray.Text = "встроен (" + Core.XrayVersion + ")"; lblXray.ForeColor = OkC; btnXray.Text = "Распаковать"; }
            btnXray.Width = 96; btnXray.Left = 300;
        }

        void UpdateAwgStatus()
        {
            bool ok = !string.IsNullOrWhiteSpace(txtField.Text) && System.IO.File.Exists(txtField.Text.Trim());
            lblXray.Text = ok ? "конфиг выбран" : "не выбран"; lblXray.ForeColor = ok ? OkC : RedC;
            btnXray.Text = "Обзор..."; btnXray.Width = 96; btnXray.Left = 300;
        }

        // ---- helpers ----
        void Log(string m) { log.AppendText(DateTime.Now.ToString("HH:mm:ss") + "  " + m + "\r\n"); }
        void SetBusy(bool b)
        {
            busy = b;
            btnSave.Enabled = btnRefresh.Enabled = btnVerify.Enabled = btnLaunch.Enabled = btnXray.Enabled = !b;
            UpdateModeLock();
            Cursor = b ? Cursors.WaitCursor : Cursors.Default;
        }

        // Mode can't be switched while the lock is active (ON) or during an operation.
        void UpdateModeLock() { rbProxy.Enabled = rbVless.Enabled = rbAwg.Enabled = !switchOn && !busy; }

        Config CaptureConfig()
        {
            var c = Core.LoadConfig();
            c.Mode = Mode; c.FailClosed = chkFail.Checked;
            if (Mode == "vless") c.Vless = txtField.Text;
            else if (Mode == "awg") c.Awg = txtField.Text;
            else c.Proxy = txtField.Text;
            Core.SaveConfig(c); return c;
        }

        void UpdateUi(bool checkReach)
        {
            try
            {
                ClaudeApp app = null;
                try { app = Core.GetClaudeApp(); } catch { }
                string fw = app != null ? Core.FirewallState(app.Exe) : Core.FirewallState(null);
                bool newOn = fw == "ok";
                if (newOn != switchOn) { switchOn = newOn; tgl.Invalidate(); }
                UpdateModeLock();

                lblFw.Text = fw == "ok" ? "установлен" : (fw == "stale" ? "устарел (путь изменился)" : "нет");
                lblFw.ForeColor = fw == "ok" ? Coral : (fw == "stale" ? RedC : Muted);

                bool running = Core.ClaudeRunning();
                if (!running) { lblCl.Text = "не запущен"; lblCl.ForeColor = Muted; }
                else { lblCl.Text = "запущен"; lblCl.ForeColor = Ink; }

                if (checkReach)
                {
                    bool ok; string text;
                    if (Mode == "vless") { string ep; ok = Vless.ServerReachable(txtField.Text, out ep); text = (ok ? "сервер доступен  " : "не отвечает  ") + ep; }
                    else if (Mode == "awg") { string ep; ok = Core.AwgConfigInfo(txtField.Text, out ep); text = ok ? ("конфиг: " + ep) : "конфиг не выбран"; }
                    else { string h; int p; if (Core.TryParseProxy(txtField.Text, out h, out p)) { ok = Core.TcpReachable(h, p, 1500); text = (ok ? "сервер доступен  " : "не отвечает  ") + h + ":" + p; } else { ok = false; text = "некорректный адрес"; } }
                    rDot.ForeColor = ok ? OkC : RedC;
                    lblReach.Text = text;
                }
                if (Mode == "vless") UpdateXrayStatus();
                else if (Mode == "awg") UpdateAwgStatus();
            }
            catch (Exception ex) { Log("ошибка обновления: " + ex.Message); }
        }

        // ---- orchestration ----
        bool Preflight()
        {
            if (Mode == "vless")
            {
                if (string.IsNullOrWhiteSpace(txtField.Text)) { MessageBox.Show("Вставь VLESS-ссылку из 3x-ui.", "Нужна ссылка", MessageBoxButtons.OK, MessageBoxIcon.Warning); return false; }
                try { string h, u, r; int p; Vless.Parse(txtField.Text, out h, out p, out u, out r); }
                catch (Exception ex) { MessageBox.Show(ex.Message, "Некорректная ссылка", MessageBoxButtons.OK, MessageBoxIcon.Error); return false; }
                if (!Core.XrayPresent())
                {
                    SetBusy(true);
                    try { Core.EnsureXray(); UpdateXrayStatus(); }
                    catch (Exception ex) { Log("ОШИБКА Xray: " + ex.Message); MessageBox.Show(ex.Message, "Ошибка Xray", MessageBoxButtons.OK, MessageBoxIcon.Error); SetBusy(false); return false; }
                    SetBusy(false);
                }
                string ep; if (!Vless.ServerReachable(txtField.Text, out ep))
                    if (MessageBox.Show("Сервер " + ep + " не отвечает. Всё равно продолжить?", "Сервер недоступен", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) != DialogResult.Yes) return false;
            }
            else if (Mode == "awg")
            {
                if (string.IsNullOrWhiteSpace(txtField.Text) || !System.IO.File.Exists(txtField.Text.Trim()))
                { MessageBox.Show("Выбери файл AmneziaWG .conf (кнопка «Обзор...»).", "Нужен конфиг", MessageBoxButtons.OK, MessageBoxIcon.Warning); return false; }
                if (!Core.AwgPresent())
                {
                    SetBusy(true);
                    try { Core.EnsureAwg(); UpdateAwgStatus(); }
                    catch (Exception ex) { Log("ОШИБКА AmneziaWG: " + ex.Message); MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); SetBusy(false); return false; }
                    SetBusy(false);
                }
            }
            else
            {
                string h; int p;
                if (!Core.TryParseProxy(txtField.Text, out h, out p)) { MessageBox.Show("Некорректный адрес прокси.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); return false; }
                if (!Core.TcpReachable(h, p, 1500))
                    if (MessageBox.Show("Прокси " + h + ":" + p + " не отвечает. Всё равно включить?", "Прокси недоступен", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) != DialogResult.Yes) return false;
            }
            CaptureConfig();
            return true;
        }

        void DoEnable(bool restart)
        {
            var cfg = Core.LoadConfig();
            string proxyArg;
            if (cfg.Mode == "vless") { Core.EnsureXray(); Core.StartXray(cfg.Vless, cfg.LocalPort); proxyArg = "socks5://127.0.0.1:" + cfg.LocalPort; }
            else if (cfg.Mode == "awg") { Core.EnsureAwg(); Core.StartAwg(cfg.Awg, cfg.LocalPort); proxyArg = "socks5://127.0.0.1:" + cfg.LocalPort; }
            else proxyArg = Core.ProxyArg(cfg.Proxy);

            if (cfg.FailClosed)
                if (!Core.ElevateSelf("fwapply")) { Core.StopXray(); Core.StopAwg(); throw new Exception("Установка firewall отменена в UAC."); }

            if (restart) { Core.StopClaude(); string a = "--proxy-server=" + proxyArg; Core.LaunchClaude(a); }
        }

        void DoDisable(bool restart)
        {
            string exe = null; try { exe = Core.GetClaudeApp().Exe; } catch { }
            if (Core.FirewallState(exe) != "absent")
                if (!Core.ElevateSelf("fwremove")) throw new Exception("Снятие firewall отменено в UAC (лок остался).");
            Core.StopXray(); Core.StopAwg();
            if (restart) { Core.StopClaude(); Core.LaunchClaude(""); }
        }

        void ToggleSwitch()
        {
            if (busy) return;
            bool restart = chkRestart.Checked;
            try
            {
                if (!switchOn)
                {
                    if (!Preflight()) return;
                    bool running = Core.ClaudeRunning();
                    bool doRestart = false;
                    if (running) { if (restart) { if (MessageBox.Show("Claude запущен. Перезапустить его через прокси? (текущее окно закроется)", "Перезапуск Claude", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) != DialogResult.OK) return; doRestart = true; } }
                    else doRestart = true;
                    SetBusy(true); Log("включаю..."); DoEnable(doRestart);
                    Log("ВКЛ. " + (!running ? "Claude запущен через прокси." : (doRestart ? "Claude перезапущен." : "лок установлен; перезапусти Claude, чтобы применить.")));
                }
                else
                {
                    bool restartOff = restart;
                    if (restartOff && MessageBox.Show("Выключение перезапустит Claude напрямую (текущее окно закроется). Продолжить?", "Перезапуск Claude", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) != DialogResult.OK) restartOff = false;
                    SetBusy(true); Log("выключаю прокси..."); DoDisable(restartOff); Log("прокси ВЫКЛ. firewall-лок снят.");
                }
            }
            catch (Exception ex) { Log("ОШИБКА: " + ex.Message); MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
            finally { SetBusy(false); UpdateUi(true); }
        }

        void LaunchProxied()
        {
            if (busy) return;
            try
            {
                if (!Preflight()) return;
                if (Core.ClaudeRunning() && MessageBox.Show("Claude уже запущен. Перезапустить его через прокси? (текущее окно закроется)", "Перезапуск Claude", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) != DialogResult.OK) return;
                SetBusy(true); Log("запускаю Claude через прокси..."); DoEnable(true); Log("Claude запущен через прокси.");
            }
            catch (Exception ex) { Log("ОШИБКА: " + ex.Message); MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
            finally { SetBusy(false); UpdateUi(true); }
        }

        void OnVerify()
        {
            try
            {
                var r = Verify.Run(Core.LoadConfig());
                foreach (var l in r.Lines) Log(l);
                string stamp = DateTime.Now.ToString("yyyyMMdd-HHmmss");
                string p = Verify.WriteLog(r, stamp);
                if (p.Length > 0) Log("лог: " + p);
                MessageBox.Show(r.Verdict, "Результат проверки", MessageBoxButtons.OK,
                    r.Ok ? MessageBoxIcon.Information : (r.Verdict.StartsWith("ПРОВАЛ") ? MessageBoxIcon.Error : MessageBoxIcon.Warning));
            }
            catch (Exception ex) { MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
        }

        void OnSave()
        {
            try
            {
                if (Mode == "vless") { string h, u, rm; int p; Vless.Parse(txtField.Text, out h, out p, out u, out rm); CaptureConfig(); Log("VLESS сохранён: " + h + ":" + p + " [" + rm + "]"); }
                else if (Mode == "awg") { if (string.IsNullOrWhiteSpace(txtField.Text) || !System.IO.File.Exists(txtField.Text.Trim())) throw new Exception("Файл AmneziaWG-конфига не найден."); CaptureConfig(); Log("AmneziaWG-конфиг сохранён: " + txtField.Text.Trim()); }
                else { string h; int p; if (!Core.TryParseProxy(txtField.Text, out h, out p)) throw new Exception("Некорректный адрес."); CaptureConfig(); Log("прокси сохранён: " + Core.ProxyArg(txtField.Text)); }
                if (switchOn) Log("ВНИМАНИЕ: режим активен со старой настройкой — переключи рубильник, чтобы применить.");
                UpdateUi(true);
            }
            catch (Exception ex) { MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
        }

        void OnXray()
        {
            if (busy) return;
            try
            {
                SetBusy(true); Core.StopXray();
                try { if (Core.XrayPresent()) System.IO.File.Delete(Core.XrayExe); } catch { }
                Log("готовлю Xray-core..."); Core.EnsureXray(); UpdateXrayStatus(); Log("Xray готов.");
            }
            catch (Exception ex) { Log("ОШИБКА: " + ex.Message); MessageBox.Show(ex.Message, "Ошибка Xray", MessageBoxButtons.OK, MessageBoxIcon.Error); }
            finally { SetBusy(false); }
        }

        void OnBrowseAwg()
        {
            using (var dlg = new OpenFileDialog())
            {
                dlg.Title = "Выбери AmneziaWG .conf";
                dlg.Filter = "AmneziaWG config (*.conf)|*.conf|Все файлы (*.*)|*.*";
                if (dlg.ShowDialog() != DialogResult.OK) return;
                txtField.Text = dlg.FileName;
                CaptureConfig();
                UpdateAwgStatus();
                Log("конфиг выбран: " + dlg.FileName);
                UpdateUi(true);
            }
        }
    }
}