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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Availability Status Manager |
| 5 | * |
| 6 | * PHP version 8 |
| 7 | * |
| 8 | * Copyright (C) Hebis Verbundzentrale 2024. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2, |
| 12 | * as published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | * |
| 23 | * @category VuFind |
| 24 | * @package ILS_Logic |
| 25 | * @author Thomas Wagener <wagener@hebis.uni-frankfurt.de> |
| 26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
| 27 | * @link https://vufind.org/wiki/development Wiki |
| 28 | */ |
| 29 | |
| 30 | namespace VuFind\ILS\Logic; |
| 31 | |
| 32 | /** |
| 33 | * Availability Status Manager |
| 34 | * |
| 35 | * @category VuFind |
| 36 | * @package ILS_Logic |
| 37 | * @author Thomas Wagener <wagener@hebis.uni-frankfurt.de> |
| 38 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
| 39 | * @link https://vufind.org/wiki/development Wiki |
| 40 | */ |
| 41 | class AvailabilityStatusManager |
| 42 | { |
| 43 | /** |
| 44 | * Create a new Availability Status |
| 45 | * |
| 46 | * @param int|bool $availability Availability |
| 47 | * |
| 48 | * @return AvailabilityStatusInterface |
| 49 | */ |
| 50 | public function createAvailabilityStatus(int|bool $availability): AvailabilityStatusInterface |
| 51 | { |
| 52 | return new AvailabilityStatus($availability); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Get combined item info of multiple item info arrays. |
| 57 | * |
| 58 | * @param array $items Array of items |
| 59 | * |
| 60 | * @return array |
| 61 | */ |
| 62 | public function combine(array $items): array |
| 63 | { |
| 64 | if (empty($items)) { |
| 65 | return ['availability' => new AvailabilityStatus(false)]; |
| 66 | } |
| 67 | usort($items, function ($a, $b) { |
| 68 | $availabilityA = $a['availability'] ?? null; |
| 69 | $availabilityB = $b['availability'] ?? null; |
| 70 | if ($availabilityA === null && $availabilityB === null) { |
| 71 | return 0; |
| 72 | } |
| 73 | if ($availabilityA === null) { |
| 74 | return 1; |
| 75 | } |
| 76 | if ($availabilityB === null) { |
| 77 | return -1; |
| 78 | } |
| 79 | return $availabilityA->compareTo($availabilityB); |
| 80 | }); |
| 81 | return $items[0]; |
| 82 | } |
| 83 | } |