<?php

/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

declare(strict_types=1);

namespace Elastic\Apm\Impl;

use Elastic\Apm\Impl\Config\RawSnapshotSourceInterface as ConfigRawSnapshotSourceInterface;
use Elastic\Apm\Impl\Log\LoggableInterface;
use Elastic\Apm\Impl\Log\LogStreamInterface;

/**
 * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
 *
 * @internal
 */
final class TracerDependencies implements LoggableInterface
{
    /** @var ?ClockInterface */
    public $clock = null;

    /** @var ?ConfigRawSnapshotSourceInterface */
    public $configRawSnapshotSource = null;

    /** @var ?EventSinkInterface */
    public $eventSink = null;

    /** @var ?Log\SinkInterface */
    public $logSink = null;

    public function toLog(LogStreamInterface $stream): void
    {
        $getDependencyType = function (?object $dep): ?string {
            return  $dep === null ? null : get_class($dep);
        };

        $stream->toLogAs(
            [
                'clock'                   => $getDependencyType($this->clock),
                'configRawSnapshotSource' => $getDependencyType($this->configRawSnapshotSource),
                'eventSink'               => $getDependencyType($this->eventSink),
                'logSink'                 => $getDependencyType($this->logSink),
            ]
        );
    }
}