// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#nullable disable

using System;
using System.Runtime.InteropServices;
using System.Security;
using System.Text;

#pragma warning disable CS0436 // Type conflicts with imported type: SuppressUnmanagedCodeSecurity

namespace Microsoft.CodeAnalysis.Interop
{
    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("BD39D1D2-BA2F-486A-89B0-B4B0CB466891"), SuppressUnmanagedCodeSecurity]
    internal interface IClrRuntimeInfo
    {
        [PreserveSig]
        int GetVersionString(
            [Out, MarshalAs(UnmanagedType.LPWStr, SizeParamIndex = 1)] StringBuilder buffer,
            [In, Out, MarshalAs(UnmanagedType.U4)] ref int bufferLength);

        [PreserveSig]
        int GetRuntimeDirectory(
            [Out, MarshalAs(UnmanagedType.LPWStr, SizeParamIndex = 1)] StringBuilder buffer,
            [In, Out, MarshalAs(UnmanagedType.U4)] ref int bufferLength);

        [return: MarshalAs(UnmanagedType.Bool)]
        bool IsLoaded(
            [In] IntPtr processHandle);

        [PreserveSig]
        int LoadErrorString(
            [In, MarshalAs(UnmanagedType.U4)] int resourceId,
            [Out, MarshalAs(UnmanagedType.LPWStr, SizeParamIndex = 2)] StringBuilder buffer,
            [In, Out, MarshalAs(UnmanagedType.U4)] ref int bufferLength);

        IntPtr LoadLibrary(
            [In, MarshalAs(UnmanagedType.LPWStr)] string dllName);

        IntPtr GetProcAddress(
            [In, MarshalAs(UnmanagedType.LPStr)] string procName);

        [return: MarshalAs(UnmanagedType.Interface)]
        object GetInterface(
            [In, MarshalAs(UnmanagedType.LPStruct)] Guid coClassId,
            [In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceId);

        [return: MarshalAs(UnmanagedType.Bool)]
        bool IsLoadable();

        void SetDefaultStartupFlags(
            [In, MarshalAs(UnmanagedType.U4)] int startupFlags,
            [In, MarshalAs(UnmanagedType.LPStr)] string hostConfigFile);

        [PreserveSig]
        int GetDefaultStartupFlags(
            [Out, MarshalAs(UnmanagedType.U4)] out int startupFlags,
            [Out, MarshalAs(UnmanagedType.LPWStr, SizeParamIndex = 2)] StringBuilder hostConfigFile,
            [In, Out, MarshalAs(UnmanagedType.U4)] ref int hostConfigFileLength);

        void BindAsLegacyV2Runtime();

        void IsStarted(
            [Out, MarshalAs(UnmanagedType.Bool)] out bool started,
            [Out, MarshalAs(UnmanagedType.U4)] out int startupFlags);
    }
}