/* ========================================================================
 * Copyright (c) 2005-2025 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
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * The complete license agreement can be found here:
 * http://opcfoundation.org/License/MIT/1.00/
 * ======================================================================*/

using System;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;

namespace Opc.Ua
{
    /// <summary>
    /// Canonical <see cref="ITelemetryContext"/> adapter used by
    /// <see cref="OpcUaServiceCollectionExtensions.AddOpcUa(IServiceCollection)"/>.
    /// Resolves the host's <see cref="ILoggerFactory"/> from DI at first
    /// access; falls back to <see cref="NullLoggerFactory"/> when no logger
    /// factory is registered. Activity sources and meters are derived from
    /// the calling assembly through the base implementation.
    /// </summary>
    public sealed class ServiceProviderTelemetryContext : TelemetryContextBase
    {
        /// <summary>
        /// Creates a new adapter bound to the supplied service provider.
        /// </summary>
        /// <param name="serviceProvider">The host's service provider.</param>
        /// <exception cref="ArgumentNullException"><paramref name="serviceProvider"/> is <c>null</c>.</exception>
        public ServiceProviderTelemetryContext(IServiceProvider serviceProvider)
            : base(serviceProvider is null
                ? throw new ArgumentNullException(nameof(serviceProvider))
                : serviceProvider.GetService<ILoggerFactory>()
                    ?? NullLoggerFactory.Instance)
        {
        }
    }
}