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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * Visibility of a single FAQ record on public read paths. |
| 7 | * |
| 8 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 9 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 10 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 11 | * |
| 12 | * @package phpMyFAQ |
| 13 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 14 | * @copyright 2026 phpMyFAQ Team |
| 15 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 16 | * @link https://www.phpmyfaq.de |
| 17 | * @since 2026-08-02 |
| 18 | */ |
| 19 | |
| 20 | namespace phpMyFAQ\Faq; |
| 21 | |
| 22 | /** |
| 23 | * Answers whether an FAQ record may be disclosed to the current requester: permitted, |
| 24 | * activated by an editor and inside its publication window. |
| 25 | * |
| 26 | * Neither Faq::getFaq() nor Faq::getFaqBySolutionId() filters by publication state. An |
| 27 | * inactive, not yet published or already expired record comes back with its metadata |
| 28 | * intact and only the answer replaced by a placeholder, and a non-existing or |
| 29 | * non-permitted record is flagged with the solution ID 42. Public read paths must ask |
| 30 | * this before rendering or exporting a record, otherwise they leak the title, solution |
| 31 | * ID, author and update date of unpublished FAQs. |
| 32 | */ |
| 33 | final readonly class RecordVisibility |
| 34 | { |
| 35 | /** |
| 36 | * The solution ID Faq::getFaq() stamps on its placeholder for records that do not |
| 37 | * exist or that the requester has no permission for. |
| 38 | */ |
| 39 | private const int ACCESS_DENIED_SOLUTION_ID = 42; |
| 40 | |
| 41 | /** |
| 42 | * @param array<string, mixed> $faqRecord a record as populated by Faq::getFaq() |
| 43 | */ |
| 44 | public function __construct( |
| 45 | private array $faqRecord, |
| 46 | ) { |
| 47 | } |
| 48 | |
| 49 | public function isVisible(): bool |
| 50 | { |
| 51 | return $this->isPermitted() && $this->isActivated() && $this->isWithinPublicationWindow(); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * An empty record means getFaq() was never called; treat that as denied so a missing |
| 56 | * load cannot be mistaken for a visible record. |
| 57 | */ |
| 58 | private function isPermitted(): bool |
| 59 | { |
| 60 | if ($this->faqRecord === []) { |
| 61 | return false; |
| 62 | } |
| 63 | |
| 64 | $solutionId = (int) ($this->faqRecord['solution_id'] ?? self::ACCESS_DENIED_SOLUTION_ID); |
| 65 | |
| 66 | return self::ACCESS_DENIED_SOLUTION_ID !== $solutionId; |
| 67 | } |
| 68 | |
| 69 | private function isActivated(): bool |
| 70 | { |
| 71 | return 'yes' === ($this->faqRecord['active'] ?? 'no'); |
| 72 | } |
| 73 | |
| 74 | private function isWithinPublicationWindow(): bool |
| 75 | { |
| 76 | $now = date(format: 'YmdHis'); |
| 77 | $dateStart = (string) ($this->faqRecord['dateStart'] ?? ''); |
| 78 | $dateEnd = (string) ($this->faqRecord['dateEnd'] ?? ''); |
| 79 | |
| 80 | $hasStarted = $dateStart === '' || $now >= $dateStart; |
| 81 | $hasNotEnded = $dateEnd === '' || $now <= $dateEnd; |
| 82 | |
| 83 | return $hasStarted && $hasNotEnded; |
| 84 | } |
| 85 | } |