#nullable disable

using System.Runtime.InteropServices;

// ReSharper disable FieldCanBeMadeReadOnly.Global
// ReSharper disable UnusedMember.Global

namespace BizHawk.Common
{
	public static class Shell32Imports
	{
		public const int BFFM_INITIALIZED = 1;
		public const int BFFM_SETSELECTIONW = 0x400 + 103;

		[UnmanagedFunctionPointer(CallingConvention.Winapi)]
		public delegate int BFFCALLBACK(IntPtr hwnd, uint uMsg, IntPtr lParam, IntPtr lpData);

		[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
		public struct BROWSEINFOW
		{
			public IntPtr hwndOwner;
			public IntPtr pidlRoot;
			public IntPtr pszDisplayName;
			[MarshalAs(UnmanagedType.LPWStr)]
			public string lpszTitle;
			public FLAGS ulFlags;
			[MarshalAs(UnmanagedType.FunctionPtr)]
			public BFFCALLBACK lpfn;
			public IntPtr lParam;
			public int iImage;

			[Flags]
			public enum FLAGS
			{
				/// <remarks>BIF_RETURNONLYFSDIRS</remarks>
				RestrictToFilesystem = 0x0001,

				/// <remarks>BIF_DONTGOBELOWDOMAIN</remarks>
				RestrictToDomain = 0x0002,

				/// <remarks>BIF_RETURNFSANCESTORS</remarks>
				RestrictToSubfolders = 0x0008,

				/// <remarks>BIF_EDITBOX</remarks>
				ShowTextBox = 0x0010,

				/// <remarks>BIF_VALIDATE</remarks>
				ValidateSelection = 0x0020,

				/// <remarks>BIF_NEWDIALOGSTYLE</remarks>
				NewDialogStyle = 0x0040,

				/// <remarks>BIF_BROWSEFORCOMPUTER</remarks>
				BrowseForComputer = 0x1000,

				/// <remarks>BIF_BROWSEFORPRINTER</remarks>
				BrowseForPrinter = 0x2000,

				/// <remarks>BIF_BROWSEINCLUDEFILES</remarks>
				BrowseForEverything = 0x4000
			}
		}

		[DllImport("shell32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
		public static extern IntPtr SHBrowseForFolderW(ref BROWSEINFOW bi);

		[DllImport("shell32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
		public static extern int SHGetPathFromIDListW(IntPtr pidl, char[] pszPath);

		[DllImport("shell32.dll", ExactSpelling = true)]
		public static extern int SHGetSpecialFolderLocation(IntPtr hwndOwner, int nFolder, out IntPtr ppidl);

		[DllImport("shell32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
		public static extern int SHCreateItemFromParsingName(
			[In] string pszPath,
			[In] IntPtr pbc,
			[In, MarshalAs(UnmanagedType.LPStruct)] Guid riid,
			out IntPtr ppv);

		[DllImport("shell32.dll", ExactSpelling = true)]
		public static extern int SHGetIDListFromObject(IntPtr punk, out IntPtr ppidl);

		[DllImport("shell32.dll", EntryPoint = "#16")]
		public static extern IntPtr ILFindLastID(IntPtr pidl);
	}
}