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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Web Push notification service. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ\Push |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2026-02-02 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Push; |
| 21 | |
| 22 | use Minishlink\WebPush\MessageSentReport; |
| 23 | use Minishlink\WebPush\Subscription; |
| 24 | use Minishlink\WebPush\VAPID; |
| 25 | use Minishlink\WebPush\WebPush; |
| 26 | use phpMyFAQ\Configuration; |
| 27 | use phpMyFAQ\Entity\PushSubscriptionEntity; |
| 28 | |
| 29 | readonly class WebPushService |
| 30 | { |
| 31 | public function __construct( |
| 32 | private Configuration $configuration, |
| 33 | private PushSubscriptionRepository $repository, |
| 34 | ) { |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Checks if Web Push is enabled and configured. |
| 39 | */ |
| 40 | public function isEnabled(): bool |
| 41 | { |
| 42 | $enableWebPush = $this->configuration->get('push.enableWebPush'); |
| 43 | // Handle null, string 'true', and boolean true |
| 44 | $isEnabled = $enableWebPush !== null && ($enableWebPush === 'true' || $enableWebPush === true); |
| 45 | |
| 46 | $vapidPublicKey = $this->configuration->get('push.vapidPublicKey'); |
| 47 | $vapidPrivateKey = $this->configuration->get('push.vapidPrivateKey'); |
| 48 | |
| 49 | return $isEnabled && (string) $vapidPublicKey !== '' && (string) $vapidPrivateKey !== ''; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Returns the VAPID public key. |
| 54 | */ |
| 55 | public function getVapidPublicKey(): string |
| 56 | { |
| 57 | return (string) ($this->configuration->get('push.vapidPublicKey') ?? ''); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Generates a new VAPID key pair. |
| 62 | * |
| 63 | * @return array{publicKey: string, privateKey: string} |
| 64 | */ |
| 65 | public static function generateVapidKeys(): array |
| 66 | { |
| 67 | $vapidKeys = VAPID::createVapidKeys(); |
| 68 | |
| 69 | return [ |
| 70 | 'publicKey' => (string) ($vapidKeys['publicKey'] ?? ''), |
| 71 | 'privateKey' => (string) ($vapidKeys['privateKey'] ?? ''), |
| 72 | ]; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Sends a push notification to all subscribers. |
| 77 | */ |
| 78 | public function sendToAll(string $title, string $body, string $url = '', string $tag = ''): void |
| 79 | { |
| 80 | if (!$this->isEnabled()) { |
| 81 | return; |
| 82 | } |
| 83 | |
| 84 | $subscriptions = $this->repository->getAll(); |
| 85 | if ($subscriptions === []) { |
| 86 | return; |
| 87 | } |
| 88 | |
| 89 | $this->sendToSubscriptions($subscriptions, $title, $body, $url, $tag); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Sends a push notification to a specific user. |
| 94 | */ |
| 95 | public function sendToUser(int $userId, string $title, string $body, string $url = '', string $tag = ''): void |
| 96 | { |
| 97 | if (!$this->isEnabled()) { |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | $subscriptions = $this->repository->getByUserId($userId); |
| 102 | if ($subscriptions === []) { |
| 103 | return; |
| 104 | } |
| 105 | |
| 106 | $this->sendToSubscriptions($subscriptions, $title, $body, $url, $tag); |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Sends a push notification to multiple specific users. |
| 111 | * |
| 112 | * @param int[] $userIds |
| 113 | */ |
| 114 | public function sendToUsers(array $userIds, string $title, string $body, string $url = '', string $tag = ''): void |
| 115 | { |
| 116 | if (!$this->isEnabled() || $userIds === []) { |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | $subscriptions = $this->repository->getByUserIds($userIds); |
| 121 | if ($subscriptions === []) { |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | $this->sendToSubscriptions($subscriptions, $title, $body, $url, $tag); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * @param PushSubscriptionEntity[] $subscriptions |
| 130 | */ |
| 131 | private function sendToSubscriptions( |
| 132 | array $subscriptions, |
| 133 | string $title, |
| 134 | string $body, |
| 135 | string $url, |
| 136 | string $tag, |
| 137 | ): void { |
| 138 | $auth = [ |
| 139 | 'VAPID' => [ |
| 140 | 'subject' => |
| 141 | $this->configuration->get('push.vapidSubject') !== '' |
| 142 | && $this->configuration->get('push.vapidSubject') !== null |
| 143 | ? $this->configuration->get('push.vapidSubject') |
| 144 | : 'mailto:' . $this->configuration->getAdminEmail(), |
| 145 | 'publicKey' => $this->configuration->get('push.vapidPublicKey'), |
| 146 | 'privateKey' => $this->configuration->get('push.vapidPrivateKey'), |
| 147 | ], |
| 148 | ]; |
| 149 | |
| 150 | try { |
| 151 | $webPush = new WebPush($auth); |
| 152 | |
| 153 | $payload = json_encode([ |
| 154 | 'title' => $title, |
| 155 | 'body' => $body, |
| 156 | 'url' => $url, |
| 157 | 'tag' => $tag, |
| 158 | 'icon' => $this->configuration->getDefaultUrl() . 'assets/img/phpmyfaq.svg', |
| 159 | ], JSON_THROW_ON_ERROR); |
| 160 | |
| 161 | foreach ($subscriptions as $subscription) { |
| 162 | $webPush->queueNotification(Subscription::create([ |
| 163 | 'endpoint' => $subscription->getEndpoint(), |
| 164 | 'publicKey' => $subscription->getPublicKey(), |
| 165 | 'authToken' => $subscription->getAuthToken(), |
| 166 | 'contentEncoding' => $subscription->getContentEncoding() ?? 'aesgcm', |
| 167 | ]), $payload); |
| 168 | } |
| 169 | |
| 170 | foreach ($webPush->flush() as $report) { |
| 171 | if (!$report instanceof MessageSentReport || !$report->isSubscriptionExpired()) { |
| 172 | continue; |
| 173 | } |
| 174 | |
| 175 | $this->repository->deleteByEndpoint($report->getEndpoint()); |
| 176 | } |
| 177 | } catch (\Throwable $exception) { |
| 178 | $this->configuration->getLogger()->error('Web Push notification failed: ' . $exception->getMessage()); |
| 179 | } |
| 180 | } |
| 181 | } |