hsxtxxcykcds2026-backend/app/Support/PortalLocale.php

<?php

namespace App\Support;

final class PortalLocale
{
    public const ZH = 'zh-CN';

    public const EN = 'en';

    public const PORTAL_PARTICIPANT = 'participant';

    public const PORTAL_AUDIENCE = 'audience';

    public static function fromRequest(?string $lang): string
    {
        $value = strtolower(trim((string) $lang));

        return $value === 'en' || $value === self::EN ? self::EN : self::ZH;
    }

    public static function isValid(string $locale): bool
    {
        return $locale === self::ZH || $locale === self::EN;
    }

    public static function choose(?string $lang, string $zh, string $en): string
    {
        return self::fromRequest($lang) === self::EN ? $en : $zh;
    }

    public static function invalidCodeMessage(?string $lang): string
    {
        return self::choose(
            $lang,
            '验证码无效或已过期',
            'The verification code is invalid or has expired.',
        );
    }

    public static function competitionMissingMessage(?string $lang): string
    {
        return self::choose(
            $lang,
            '赛事不存在或未发布',
            'This competition is unavailable or unpublished.',
        );
    }
}