// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.ComponentModel;
using System.Runtime.Serialization;

namespace System.Security.Principal
{
    [Serializable]
    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
    public sealed class IdentityNotMappedException : SystemException
    {
        private IdentityReferenceCollection? _unmappedIdentities;

        public IdentityNotMappedException()
            : base(SR.IdentityReference_IdentityNotMapped)
        {
        }

        public IdentityNotMappedException(string? message)
            : base(message ?? SR.IdentityReference_IdentityNotMapped)
        {
        }

        public IdentityNotMappedException(string? message, Exception? inner)
            : base(message ?? SR.IdentityReference_IdentityNotMapped, inner)
        {
        }

        internal IdentityNotMappedException(string? message, IdentityReferenceCollection? unmappedIdentities)
            : this(message)
        {
            _unmappedIdentities = unmappedIdentities;
        }

        [Obsolete(Obsoletions.LegacyFormatterImplMessage, DiagnosticId = Obsoletions.LegacyFormatterImplDiagId, UrlFormat = Obsoletions.SharedUrlFormat)]
        private IdentityNotMappedException(SerializationInfo info, StreamingContext context) : base(info, context)
        {
        }

        [Obsolete(Obsoletions.LegacyFormatterImplMessage, DiagnosticId = Obsoletions.LegacyFormatterImplDiagId, UrlFormat = Obsoletions.SharedUrlFormat)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        public override void GetObjectData(SerializationInfo serializationInfo, StreamingContext streamingContext)
        {
            base.GetObjectData(serializationInfo, streamingContext);
        }

        public IdentityReferenceCollection UnmappedIdentities => _unmappedIdentities ??= new IdentityReferenceCollection();
    }
}