247 lines
11 KiB
PHP
247 lines
11 KiB
PHP
<?php
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declare(strict_types = 1);
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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namespace Component\Subscription;
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use App\Core\Cache;
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use App\Core\DB\DB;
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use App\Core\Event;
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use function App\Core\I18n\_m;
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use App\Core\Modules\Component;
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use App\Core\Router\RouteLoader;
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use App\Core\Router\Router;
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use App\Entity\Activity;
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use App\Entity\Actor;
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use App\Entity\LocalUser;
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use App\Util\Common;
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use App\Util\Exception\DuplicateFoundException;
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use App\Util\Exception\NotFoundException;
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use App\Util\Exception\ServerException;
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use Component\Notification\Entity\Attention;
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use Component\Subscription\Controller\Subscribers as SubscribersController;
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use Component\Subscription\Controller\Subscriptions as SubscriptionsController;
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use Symfony\Component\HttpFoundation\Request;
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class Subscription extends Component
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{
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public function onAddRoute(RouteLoader $r): bool
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{
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$r->connect(id: 'actor_subscribe_add', uri_path: '/actor/subscribe/{object_id<\d+>}', target: [SubscribersController::class, 'subscribersAdd']);
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$r->connect(id: 'actor_subscribe_remove', uri_path: '/actor/unsubscribe/{object_id<\d+>}', target: [SubscribersController::class, 'subscribersRemove']);
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$r->connect(id: 'actor_subscriptions_id', uri_path: '/actor/{id<\d+>}/subscriptions', target: [SubscriptionsController::class, 'subscriptionsByActorId']);
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$r->connect(id: 'actor_subscribers_id', uri_path: '/actor/{id<\d+>}/subscribers', target: [SubscribersController::class, 'subscribersByActorId']);
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return Event::next;
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}
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/**
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* To use after Subscribe/Unsubscribe and DB::flush()
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*
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* @param Actor|int|LocalUser $subject The Actor who subscribed or unsubscribed
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* @param Actor|int|LocalUser $object The Actor who was subscribed or unsubscribed from
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*/
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public static function refreshSubscriptionCount(int|Actor|LocalUser $subject, int|Actor|LocalUser $object): array
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{
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$subscriber_id = \is_int($subject) ? $subject : $subject->getId();
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$subscribed_id = \is_int($object) ? $object : $object->getId();
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$cache_subscriber = Cache::delete(Actor::cacheKeys($subscriber_id)['subscribed']);
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$cache_subscribed = Cache::delete(Actor::cacheKeys($subscribed_id)['subscribers']);
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return [$cache_subscriber, $cache_subscribed];
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}
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/**
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* Persists a new Subscription Entity from Subject to Object (Actor being subscribed) and Activity
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*
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* A new notification is then handled, informing all interested Actors of this action
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*
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* @param Actor|int|LocalUser $subject The actor performing the subscription
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* @param Actor|int|LocalUser $object The target of the subscription
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*
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* @throws DuplicateFoundException
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* @throws NotFoundException
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* @throws ServerException
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*
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* @return null|Activity a new Activity if changes were made
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*
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* @see self::refreshSubscriptionCount() to delete cache after this action
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*/
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public static function subscribe(int|Actor|LocalUser $subject, int|Actor|LocalUser $object, string $source = 'web'): ?Activity
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{
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$subscriber_id = \is_int($subject) ? $subject : $subject->getId();
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$subscribed_id = \is_int($object) ? $object : $object->getId();
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$opts = [
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'subscriber_id' => $subscriber_id,
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'subscribed_id' => $subscribed_id,
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];
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$subscription = DB::findOneBy(table: Entity\ActorSubscription::class, criteria: $opts, return_null: true);
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$activity = null;
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if (\is_null($subscription)) {
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DB::persist($subscription = Entity\ActorSubscription::create($opts));
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$activity = Activity::create([
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'actor_id' => $subscriber_id,
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'verb' => 'subscribe',
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'object_type' => Actor::schemaName(),
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'object_id' => $subscribed_id,
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'source' => $source,
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]);
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DB::persist($activity);
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DB::persist(Attention::create(['object_type' => Activity::schemaName(), 'object_id' => $activity->getId(), 'target_id' => $subscribed_id]));
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Event::handle('NewNotification', [
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\is_int($subject) ? $subject : Actor::getById($subscriber_id),
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$activity,
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[$subscribed_id],
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$reason = _m('{subject} subscribed to {object}.', ['{subject}' => $activity->getActorId(), '{object}' => $activity->getObjectId()]),
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]);
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Event::handle('NewSubscriptionEnd', [$subject, $activity, $object, $reason]);
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}
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return $activity;
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}
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/**
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* Removes the Subscription Entity created beforehand, by the same Actor, and on the same object
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*
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* Informs all interested Actors of this action, handling out the NewNotification event
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*
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* @param Actor|int|LocalUser $subject The actor undoing the subscription
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* @param Actor|int|LocalUser $object The target of the subscription
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*
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* @throws DuplicateFoundException
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* @throws NotFoundException
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* @throws ServerException
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*
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* @return null|Activity a new Activity if changes were made
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*
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* @see self::refreshSubscriptionCount() to delete cache after this action
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*/
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public static function unsubscribe(int|Actor|LocalUser $subject, int|Actor|LocalUser $object, string $source = 'web'): ?Activity
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{
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$subscriber_id = \is_int($subject) ? $subject : $subject->getId();
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$subscribed_id = \is_int($object) ? $object : $object->getId();
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$opts = [
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'subscriber_id' => $subscriber_id,
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'subscribed_id' => $subscribed_id,
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];
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$subscription = DB::findOneBy(table: Entity\ActorSubscription::class, criteria: $opts, return_null: true);
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$activity = null;
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if (!\is_null($subscription)) {
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// Remove Subscription
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DB::remove($subscription);
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$previous_follow_activity = DB::findBy(Activity::class, ['verb' => 'subscribe', 'object_type' => Actor::schemaName(), 'object_id' => $subscribed_id], order_by: ['created' => 'DESC'])[0];
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// Store Activity
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$activity = Activity::create([
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'actor_id' => $subscriber_id,
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'verb' => 'undo',
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'object_type' => Activity::schemaName(),
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'object_id' => $previous_follow_activity->getId(),
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'source' => $source,
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]);
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DB::persist($activity);
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DB::persist(Attention::create(['object_type' => Activity::schemaName(), 'object_id' => $activity->getId(), 'target_id' => $subscribed_id]));
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Event::handle('NewNotification', [
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\is_int($subject) ? $subject : Actor::getById($subscriber_id),
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$activity,
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[$subscribed_id],
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_m('{subject} unsubscribed from {object}.', ['{subject}' => $activity->getActorId(), '{object}' => $previous_follow_activity->getObjectId()]),
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]);
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}
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return $activity;
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}
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/**
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* Provides ``\App\templates\cards\profile\view.html.twig`` an **additional action** to be performed **on the given
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* Actor** (which the profile card of is currently being rendered).
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*
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* In the case of ``\App\Component\Subscription``, the action added allows a **LocalUser** to **subscribe** or
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* **unsubscribe** a given **Actor**.
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*
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* @param Actor $object The Actor on which the action is to be performed
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* @param array $actions An array containing all actions added to the
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* current profile, this event adds an action to it
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*
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* @throws DuplicateFoundException
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* @throws NotFoundException
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* @throws ServerException
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*
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* @return bool EventHook
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*/
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public function onAddProfileActions(Request $request, Actor $object, array &$actions): bool
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{
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// Action requires a user to be logged in
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// We know it's a LocalUser, which has the same id as Actor
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// We don't want the Actor to unfollow itself
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if ((\is_null($subject = Common::user())) || ($subject->getId() === $object->getId())) {
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return Event::next;
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}
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// Let's retrieve from here this subject came from to redirect it to previous location
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$from = $request->query->has('from')
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? $request->query->get('from')
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: $request->getPathInfo();
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// Who is the subject attempting to subscribe to?
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$object_id = $object->getId();
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// The id of both the subject and object
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$opts = [
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'subscriber_id' => $subject->getId(),
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'subscribed_id' => $object_id,
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];
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// If subject is not subbed to object already, then route it to add subscription
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// Else, route to remove subscription
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$subscribe_action_url = ($not_subscribed_already = \is_null(DB::findOneBy(table: Entity\ActorSubscription::class, criteria: $opts, return_null: true))) ? Router::url(
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'actor_subscribe_add',
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[
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'object_id' => $object_id,
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'from' => $from . '#profile-' . $object_id,
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],
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Router::ABSOLUTE_PATH,
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) : Router::url(
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'actor_subscribe_remove',
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[
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'object_id' => $object_id,
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'from' => $from . '#profile-' . $object_id,
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],
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Router::ABSOLUTE_PATH,
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);
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// Finally, create an array with proper keys set accordingly
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// to provide Profile Card template, the info it needs in order to render it properly
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$action_extra_class = $not_subscribed_already ? 'add-actor-button-container' : 'remove-actor-button-container';
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$title = $not_subscribed_already ? 'Subscribe ' . $object->getNickname() : 'Unsubscribe ' . $object->getNickname();
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$subscribe_action = [
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'url' => $subscribe_action_url,
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'title' => _m($title),
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'classes' => 'button-container note-actions-unset ' . $action_extra_class,
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'id' => 'add-actor-button-container-' . $object_id,
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];
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$actions[] = $subscribe_action;
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return Event::next;
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}
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}
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