friendica/src/Model/Subscription.php

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<?php
/**
* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Model;
use Friendica\Core\Logger;
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use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\DI;
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use Minishlink\WebPush\VAPID;
class Subscription
{
/**
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* Select a subscription record exists
*
* @param int $applicationid
* @param int $uid
* @param array $fields
*
* @return bool Does it exist?
*/
public static function select(int $applicationid, int $uid, array $fields = [])
{
return DBA::selectFirst('subscription', $fields, ['application-id' => $applicationid, 'uid' => $uid]);
}
/**
* Check if a subscription record exists
*
* @param int $applicationid
* @param int $uid
*
* @return bool Does it exist?
*/
public static function exists(int $applicationid, int $uid)
{
return DBA::exists('subscription', ['application-id' => $applicationid, 'uid' => $uid]);
}
/**
* Update a subscription record
*
* @param int $applicationid
* @param int $uid
* @param array $fields subscription fields
*
* @return bool result of update
*/
public static function update(int $applicationid, int $uid, array $fields)
{
return DBA::update('subscription', $fields, ['application-id' => $applicationid, 'uid' => $uid]);
}
/**
* Insert or replace a subscription record
*
* @param array $fields subscription fields
*
* @return bool result of replace
*/
public static function replace(array $fields)
{
return DBA::replace('subscription', $fields);
}
/**
* Delete a subscription record
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*
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* @param int $applicationid
* @param int $uid
* @return bool
*/
public static function delete(int $applicationid, int $uid)
{
return DBA::delete('subscription', ['application-id' => $applicationid, 'uid' => $uid]);
}
/**
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* Fetch a VAPID keypair
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*
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* @return array
*/
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private static function getKeyPair(): array
{
$keypair = DI::config()->get('system', 'ec_keypair');
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if (empty($keypair['publicKey']) || empty($keypair['privateKey'])) {
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$keypair = VAPID::createVapidKeys();
DI::config()->set('system', 'ec_keypair', $keypair);
}
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return $keypair;
}
/**
* Fetch the public VAPID key
*
* @return string
*/
public static function getPublicVapidKey(): string
{
$keypair = self::getKeyPair();
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return $keypair['publicKey'];
}
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/**
* Fetch the public VAPID key
*
* @return string
*/
public static function getPrivateVapidKey(): string
{
$keypair = self::getKeyPair();
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return $keypair['privateKey'];
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}
/**
* Prepare push notification
*
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* @param int $nid
* @return void
*/
public static function pushByNotificationId(int $nid)
{
$notification = DBA::selectFirst('notification', [], ['id' => $nid]);
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$type = Notification::getType($notification);
if (empty($type)) {
return;
}
$subscriptions = DBA::select('subscription', [], ['uid' => $notification['uid'], $type => true]);
while ($subscription = DBA::fetch($subscriptions)) {
Logger::info('Push notification', ['id' => $subscription['id'], 'uid' => $subscription['uid'], 'type' => $type]);
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Worker::add(PRIORITY_HIGH, 'PushSubscription', $subscription['id'], $nid);
}
DBA::close($subscriptions);
}
}