<?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\Config;

use Elastic\Apm\Impl\Util\TextUtil;

/**
 * Code in this file is part of implementation internals and thus it is not covered by the backward compatibility.
 *
 * @internal
 *
 * @extends EnumOptionParser<bool>
 */
final class BoolOptionParser extends EnumOptionParser
{
    /** @var array<string> */
    public static $trueRawValues = ['true', 'yes', 'on', '1'];

    /** @var array<string> */
    public static $falseRawValues = ['false', 'no', 'off', '0'];

    /** @var ?array<array{string, bool}> */
    private static $boolNameToValue = null;

    public function __construct()
    {
        if (self::$boolNameToValue === null) {
            self::$boolNameToValue = [];
            foreach (self::$trueRawValues as $trueRawValue) {
                self::$boolNameToValue[] = [$trueRawValue, true];
            }
            foreach (self::$falseRawValues as $falseRawValue) {
                self::$boolNameToValue[] = [$falseRawValue, false];
            }
        }

        parent::__construct(
            'bool' /* <- dbgEnumDesc */,
            self::$boolNameToValue /* <- nameToValue */,
            false /* <- isCaseSensitive */,
            false /* <- isUnambiguousPrefixAllowed */
        );
    }

    /** @inheritDoc */
    public function parse(string $rawValue)
    {
        return TextUtil::isEmptyString($rawValue) ? false : parent::parse($rawValue);
    }
}