<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Validator\Constraints;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;

/**
 * Validates that a value is a valid timezone identifier.
 *
 * @author Javier Spagnoletti <phansys@gmail.com>
 * @author Hugo Hamon <hugohamon@neuf.fr>
 */
#[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
class Timezone extends Constraint
{
    public const TIMEZONE_IDENTIFIER_ERROR = '5ce113e6-5e64-4ea2-90fe-d2233956db13';
    public const TIMEZONE_IDENTIFIER_IN_ZONE_ERROR = 'b57767b1-36c0-40ac-a3d7-629420c775b8';
    public const TIMEZONE_IDENTIFIER_IN_COUNTRY_ERROR = 'c4a22222-dc92-4fc0-abb0-d95b268c7d0b';
    public const TIMEZONE_IDENTIFIER_INTL_ERROR = '45863c26-88dc-41ba-bf53-c73bd1f7e90d';

    public int $zone = \DateTimeZone::ALL;
    public ?string $countryCode = null;
    public bool $intlCompatible = false;
    public string $message = 'This value is not a valid timezone.';

    protected const ERROR_NAMES = [
        self::TIMEZONE_IDENTIFIER_ERROR => 'TIMEZONE_IDENTIFIER_ERROR',
        self::TIMEZONE_IDENTIFIER_IN_ZONE_ERROR => 'TIMEZONE_IDENTIFIER_IN_ZONE_ERROR',
        self::TIMEZONE_IDENTIFIER_IN_COUNTRY_ERROR => 'TIMEZONE_IDENTIFIER_IN_COUNTRY_ERROR',
        self::TIMEZONE_IDENTIFIER_INTL_ERROR => 'TIMEZONE_IDENTIFIER_INTL_ERROR',
    ];

    /**
     * @param int|array<string,mixed>|null $zone           Restrict valid timezones to this geographical zone (defaults to {@see \DateTimeZone::ALL})
     * @param string|null                  $countryCode    Restrict the valid timezones to this country if the zone option is {@see \DateTimeZone::PER_COUNTRY}
     * @param bool|null                    $intlCompatible Whether to restrict valid timezones to ones available in PHP's intl (defaults to false)
     * @param string[]|null                $groups
     * @param array<string,mixed>          $options
     *
     * @see \DateTimeZone
     */
    public function __construct(
        int|array|null $zone = null,
        ?string $message = null,
        ?string $countryCode = null,
        ?bool $intlCompatible = null,
        ?array $groups = null,
        mixed $payload = null,
        array $options = [],
    ) {
        if (\is_array($zone)) {
            $options = array_merge($zone, $options);
        } elseif (null !== $zone) {
            $options['value'] = $zone;
        }

        parent::__construct($options, $groups, $payload);

        $this->message = $message ?? $this->message;
        $this->countryCode = $countryCode ?? $this->countryCode;
        $this->intlCompatible = $intlCompatible ?? $this->intlCompatible;

        if (null === $this->countryCode) {
            if (0 >= $this->zone || \DateTimeZone::ALL_WITH_BC < $this->zone) {
                throw new ConstraintDefinitionException('The option "zone" must be a valid range of "\DateTimeZone" constants.');
            }
        } elseif (\DateTimeZone::PER_COUNTRY !== (\DateTimeZone::PER_COUNTRY & $this->zone)) {
            throw new ConstraintDefinitionException('The option "countryCode" can only be used when the "zone" option is configured with "\DateTimeZone::PER_COUNTRY".');
        }
        if ($this->intlCompatible && !class_exists(\IntlTimeZone::class)) {
            throw new ConstraintDefinitionException('The option "intlCompatible" can only be used when the PHP intl extension is available.');
        }
    }

    public function getDefaultOption(): ?string
    {
        return 'zone';
    }
}