//------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------

namespace System.Runtime.DurableInstancing
{
    using System.Diagnostics.CodeAnalysis;
    using System.Runtime.Serialization;
    using System.Security;
    using System.Xml.Linq;

    [Serializable]
    public class InstanceKeyCollisionException : InstancePersistenceCommandException
    {
        const string ConflictingInstanceIdName = "instancePersistenceConflictingInstanceId";
        const string InstanceKeyName = "instancePersistenceInstanceKey";

        public InstanceKeyCollisionException()
            : this(SRCore.KeyCollisionDefault, null)
        {
        }

        public InstanceKeyCollisionException(string message)
            : this(message, null)
        {
        }

        public InstanceKeyCollisionException(string message, Exception innerException)
            : base(message, innerException)
        {
        }

        public InstanceKeyCollisionException(XName commandName, Guid instanceId, InstanceKey instanceKey, Guid conflictingInstanceId)
            : this(commandName, instanceId, instanceKey, conflictingInstanceId, null)
        {
        }

        public InstanceKeyCollisionException(XName commandName, Guid instanceId, InstanceKey instanceKey, Guid conflictingInstanceId, Exception innerException)
            : this(commandName, instanceId, instanceKey, conflictingInstanceId, ToMessage(instanceId, instanceKey, conflictingInstanceId), innerException)
        {
        }

        public InstanceKeyCollisionException(XName commandName, Guid instanceId, InstanceKey instanceKey, Guid conflictingInstanceId, string message, Exception innerException)
            : base(commandName, instanceId, message, innerException)
        {
            ConflictingInstanceId = conflictingInstanceId;
            InstanceKey = instanceKey;
        }

        [SecurityCritical]
        protected InstanceKeyCollisionException(SerializationInfo info, StreamingContext context)
            : base(info, context)
        {
            ConflictingInstanceId = (Guid)info.GetValue(ConflictingInstanceIdName, typeof(Guid));
            Guid guid = (Guid)info.GetValue(InstanceKeyName, typeof(Guid));
            InstanceKey = guid == Guid.Empty ? null : new InstanceKey(guid);
        }

        public Guid ConflictingInstanceId { get; private set; }

        public InstanceKey InstanceKey { get; private set; }

        [Fx.Tag.SecurityNote(Critical = "Overrides critical inherited method")]
        [SecurityCritical]
        [SuppressMessage(FxCop.Category.Security, FxCop.Rule.SecureGetObjectDataOverrides,
            Justification = "Method is SecurityCritical")]
        public override void GetObjectData(SerializationInfo info, StreamingContext context)
        {
            base.GetObjectData(info, context);
            info.AddValue(ConflictingInstanceIdName, ConflictingInstanceId, typeof(Guid));
            info.AddValue(InstanceKeyName, (InstanceKey != null && InstanceKey.IsValid) ? InstanceKey.Value : Guid.Empty, typeof(Guid));
        }

        static string ToMessage(Guid instanceId, InstanceKey instanceKey, Guid conflictingInstanceId)
        {
            if (instanceKey != null && instanceKey.IsValid)
            {
                if (instanceId != Guid.Empty && conflictingInstanceId != Guid.Empty)
                {
                    return SRCore.KeyCollisionSpecific(instanceId, instanceKey.Value, conflictingInstanceId);
                }
                return SRCore.KeyCollisionSpecificKeyOnly(instanceKey.Value);
            }
            return SRCore.KeyCollisionDefault;
        }
    }
}