using System.Runtime.InteropServices;

namespace CursorLang.Core.Interop;

/// <summary>
/// The right to bring a window to the foreground.
/// </summary>
internal static class ForegroundPermissionNative
{
    /// <summary>ASFW_ANY — any process gets the right.</summary>
    private const uint AnyProcess = 0xFFFFFFFF;

    /// <summary>
    /// Gives up our right to bring a window to the foreground in favour of other processes.
    /// </summary>
    /// <remarks>
    /// Windows does not let just anyone change the foreground window: you have to be
    /// the process the user interacted with last. An instance started long ago is not
    /// one of those, and its window will come up only if the right is shared by the
    /// process the user has just launched.
    /// </remarks>
    internal static void GrantToAnyProcess() => AllowSetForegroundWindow(AnyProcess);

    [DllImport("user32.dll")]
    private static extern bool AllowSetForegroundWindow(uint dwProcessId);
}