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 * Copyright (c) 2005-2026 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
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 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
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 *
 * The above copyright notice and this permission notice shall be
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using System;
using Microsoft.Extensions.Logging;
using Opc.Ua.Bindings;

namespace Opc.Ua.Bindings.Pcap.Bindings
{
    /// <summary>
    /// <see cref="IMessageSocketFactory"/> decorator that wraps every
    /// socket created by an inner factory in a
    /// <see cref="CapturingMessageSocket"/>. Installed once at binding
    /// registration time; every channel created through the binding gets
    /// its socket transparently capture-enabled.
    /// </summary>
    public sealed class CapturingMessageSocketFactory : IMessageSocketFactory
    {
        private readonly IMessageSocketFactory m_inner;
        private readonly IChannelCaptureRegistry m_registry;
        private readonly ILoggerFactory? m_loggerFactory;

        /// <summary>
        /// Constructs a capturing factory.
        /// </summary>
        /// <exception cref="ArgumentNullException">
        /// <paramref name="inner"/> or <paramref name="registry"/> is <c>null</c>.
        /// </exception>
        public CapturingMessageSocketFactory(
            IMessageSocketFactory inner,
            IChannelCaptureRegistry registry,
            ILoggerFactory? loggerFactory = null)
        {
            ArgumentNullException.ThrowIfNull(inner);
            ArgumentNullException.ThrowIfNull(registry);

            m_inner = inner;
            m_registry = registry;
            m_loggerFactory = loggerFactory;
        }

        /// <inheritdoc/>
        public string Implementation => m_inner.Implementation + "+pcap";

        /// <inheritdoc/>
        public IMessageSocket Create(
            IMessageSink sink,
            BufferManager bufferManager,
            int receiveBufferSize)
        {
            IMessageSocket inner = m_inner.Create(sink, bufferManager, receiveBufferSize);
            return new CapturingMessageSocket(inner, m_registry, sink, m_loggerFactory);
        }
    }
}