feat(ads/seo/release): v1.2.0 with live Google Ads, isolated ad profile, ads.txt, and SEO/AEO/GEO optimization

src/Paca.App/Services/GlobalHotkeyService.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Windows.Input;
+
+namespace Paca.App.Services;
+
+public sealed class GlobalHotkeyService : IDisposable
+{
+    public const uint MOD_ALT = 0x0001;
+    public const uint MOD_CONTROL = 0x0002;
+    public const uint MOD_SHIFT = 0x0004;
+    public const uint MOD_WIN = 0x0008;
+    public const uint MOD_NOREPEAT = 0x4000;
+    public const int WM_HOTKEY = 0x0312;
+
+    [DllImport("user32.dll", SetLastError = true)]
+    private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);
+
+    [DllImport("user32.dll", SetLastError = true)]
+    private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
+
+    private IntPtr _hWnd;
+    private int _currentId;
+    private bool _isRegistered;
+
+    public bool IsRegistered => _isRegistered;
+
+    public event Action? HotkeyPressed;
+
+    public bool Register(IntPtr hWnd, int id, string hotkeyStr)
+    {
+        Unregister();
+
+        if (!TryParseHotkey(hotkeyStr, out uint modifiers, out uint vk))
+        {
+            return false;
+        }
+
+        _hWnd = hWnd;
+        _currentId = id;
+        _isRegistered = RegisterHotKey(_hWnd, _currentId, modifiers | MOD_NOREPEAT, vk);
+        return _isRegistered;
+    }
+
+    public void Unregister()
+    {
+        if (_isRegistered && _hWnd != IntPtr.Zero)
+        {
+            UnregisterHotKey(_hWnd, _currentId);
+            _isRegistered = false;
+        }
+    }
+
+    public IntPtr HandleWindowMessages(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+    {
+        if (msg == WM_HOTKEY && wParam.ToInt32() == _currentId)
+        {
+            HotkeyPressed?.Invoke();
+            handled = true;
+        }
+        return IntPtr.Zero;
+    }
+
+    public static bool TryParseHotkey(string? hotkeyStr, out uint fsModifiers, out uint vk)
+    {
+        fsModifiers = 0;
+        vk = 0;
+
+        if (string.IsNullOrWhiteSpace(hotkeyStr)) return false;
+
+        var parts = hotkeyStr.Split('+', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
+        if (parts.Length == 0) return false;
+
+        for (int i = 0; i < parts.Length - 1; i++)
+        {
+            var part = parts[i].ToLowerInvariant();
+            if (part is "ctrl" or "control") fsModifiers |= MOD_CONTROL;
+            else if (part is "alt") fsModifiers |= MOD_ALT;
+            else if (part is "shift") fsModifiers |= MOD_SHIFT;
+            else if (part is "win" or "windows") fsModifiers |= MOD_WIN;
+            else return false;
+        }
+
+        var keyPart = parts[^1].ToUpperInvariant();
+        if (keyPart is "SPACE") vk = 0x20;
+        else if (keyPart is "RETURN" or "ENTER") vk = 0x0D;
+        else if (keyPart is "ESCAPE" or "ESC") vk = 0x1B;
+        else if (keyPart.Length == 1 && keyPart[0] >= 'A' && keyPart[0] <= 'Z') vk = (uint)keyPart[0];
+        else if (keyPart.Length == 1 && keyPart[0] >= '0' && keyPart[0] <= '9') vk = (uint)keyPart[0];
+        else if (keyPart.StartsWith("F") && int.TryParse(keyPart[1..], out int fNum) && fNum >= 1 && fNum <= 24)
+        {
+            vk = (uint)(0x70 + (fNum - 1)); // VK_F1 = 0x70
+        }
+        else
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    public void Dispose()
+    {
+        Unregister();
+    }
+}