using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace WindowsGotify.Tray;

public sealed class TrayIconService : IDisposable
{
    private readonly NotifyIcon _notifyIcon;
    private readonly Action _onShowSettings;
    private readonly Func<Task> _onTest;
    private readonly Action _onReconnect;
    private readonly Action _onExit;

    public TrayIconService(
        Action onShowSettings,
        Func<Task> onTest,
        Action onReconnect,
        Action onExit)
    {
        _onShowSettings = onShowSettings;
        _onTest = onTest;
        _onReconnect = onReconnect;
        _onExit = onExit;

        var menu = new ContextMenuStrip();

        var showItem = new ToolStripMenuItem("打开设置 / 查看历史");
        showItem.Click += (_, _) => _onShowSettings();

        var testItem = new ToolStripMenuItem("测试通知");
        testItem.Click += async (_, _) => await _onTest();

        var reconnectItem = new ToolStripMenuItem("重新连接");
        reconnectItem.Click += (_, _) => _onReconnect();

        var exitItem = new ToolStripMenuItem("退出");
        exitItem.Click += (_, _) => _onExit();

        menu.Items.Add(showItem);
        menu.Items.Add(testItem);
        menu.Items.Add(reconnectItem);
        menu.Items.Add(new ToolStripSeparator());
        menu.Items.Add(exitItem);

        _notifyIcon = new NotifyIcon
        {
            Icon = LoadMascotIcon(),
            Visible = true,
            Text = "Windows Gotify",
            ContextMenuStrip = menu
        };

        _notifyIcon.DoubleClick += (_, _) => _onShowSettings();
    }

    public void SetStatus(string status)
    {
        try
        {
            var text = $"Gotify: {status}";
            _notifyIcon.Text = text.Length <= 63 ? text : text[..63];
        }
        catch
        {
            // ignore tray update failures
        }
    }

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

    private static Icon LoadMascotIcon()
    {
        // EXE 同目录下优先(发布后),其次源码 Assets 目录(dev),最后回退到系统默认图标
        var exeDir = AppContext.BaseDirectory;
        var candidates = new[]
        {
            Path.Combine(exeDir, "Assets", "gotify-mascot.ico"),
            Path.Combine(exeDir, "gotify-mascot.ico"),
        };
        foreach (var p in candidates)
        {
            if (File.Exists(p))
            {
                try { return new Icon(p); }
                catch { /* 损坏的 ICO 文件,继续找下一个 */ }
            }
        }
        return SystemIcons.Application;
    }
}