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

namespace DRG.DRGInterfaceClient
{
    /// <summary>系统托盘封装：最小化收起、双击还原、右键菜单。自定义绘制 DRG 圆形图标。</summary>
    internal class TrayIcon
    {
        public NotifyIcon Icon { get; private set; }
        private MainForm _form;

        public TrayIcon(MainForm form)
        {
            _form = form;
            Icon = new NotifyIcon
            {
                Icon = BuildIcon(),
                Visible = true,
                Text = "DRG 接口客户端"
            };

            var menu = new ContextMenuStrip();
            var open = new ToolStripMenuItem("打开主界面");
            open.Click += (s, e) => _form.ShowMain();
            var sync = new ToolStripMenuItem("立即执行一次");
            sync.Click += (s, e) => _ = _form.DoSyncAsync();
            var log = new ToolStripMenuItem("打开日志");
            log.Click += (s, e) => Logger.OpenLogFile();
            var exit = new ToolStripMenuItem("退出");
            exit.Click += (s, e) => _form.ExitApp();
            menu.Items.AddRange(new ToolStripItem[] { open, sync, log, exit });

            Icon.ContextMenuStrip = menu;
            Icon.DoubleClick += (s, e) => _form.ShowMain();
        }

        /// <summary>运行时绘制一个蓝色圆形 + 白色 "DRG" 文字图标（避免依赖外部 .ico 文件）。</summary>
        private static Icon BuildIcon()
        {
            try
            {
                var bmp = new Bitmap(32, 32);
                using (var g = Graphics.FromImage(bmp))
                {
                    g.SmoothingMode = SmoothingMode.AntiAlias;
                    g.Clear(Color.Transparent);
                    using (var brush = new SolidBrush(Color.FromArgb(0x1E, 0x88, 0xE5)))
                        g.FillEllipse(brush, 2, 2, 28, 28);
                    using (var font = new Font("Microsoft YaHei", 11, FontStyle.Bold))
                    using (var sf = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center })
                    using (var brushW = new SolidBrush(Color.White))
                        g.DrawString("DRG", font, brushW, new RectangleF(0, 0, 32, 32), sf);
                }
                return System.Drawing.Icon.FromHandle(bmp.GetHicon());
            }
            catch
            {
                return SystemIcons.Application;
            }
        }

        public void ShowBalloon(string text)
        {
            try { Icon.ShowBalloonTip(3000, "DRG 接口客户端", text, ToolTipIcon.Info); }
            catch { }
        }

        public void Dispose()
        {
            Icon.Visible = false;
            Icon.Dispose();
        }
    }
}