<?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\Util;

/**
 * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
 *
 * @internal
 */
final class ElasticApmExtensionUtil
{
    use StaticClassTrait;

    public const EXTENSION_NAME = 'elastic_apm';

    /** @var ?bool */
    private static $isLoaded = null;

    public static function isLoaded(): bool
    {
        if (self::$isLoaded === null) {
            self::$isLoaded = extension_loaded(self::EXTENSION_NAME);
        }

        return self::$isLoaded;
    }

    public static function getEnabledConfig(): bool
    {
        /**
         * elastic_apm_* functions are provided by the elastic_apm extension
         *
         * @noinspection PhpFullyQualifiedNameUsageInspection, PhpUndefinedFunctionInspection
         * @phpstan-ignore-next-line
         */
        return \elastic_apm_is_enabled();
    }
}