<?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\BackendComm\SerializationUtil;

/**
 * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
 *
 * @internal
 */
final class SpanCompositeData implements SerializableDataInterface
{
    /** @var string */
    public $compressionStrategy;

    /** @var int */
    public $count;

    /** @var float */
    public $durationsSum;

    public function __construct(string $compressionStrategy, float $durationsSum)
    {
        $this->compressionStrategy = $compressionStrategy;
        $this->count = 1;
        $this->durationsSum = $durationsSum;
    }

    /** @inheritDoc */
    public function jsonSerialize()
    {
        $result = [];

        SerializationUtil::addNameValue('compression_strategy', $this->compressionStrategy, /* ref */ $result);
        SerializationUtil::addNameValueIfNotNull('count', $this->count, /* ref */ $result);
        SerializationUtil::addNameValue('sum', $this->durationsSum, /* ref */ $result);

        return SerializationUtil::postProcessResult($result);
    }
}