gnu-social/src/Entity/Actor.php

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<?php
declare(strict_types = 1);
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
namespace App\Entity;
use App\Core\ActorLocalRoles;
use App\Core\Cache;
use App\Core\DB\DB;
use App\Core\Entity;
use App\Core\Event;
use App\Core\Router\Router;
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use App\Util\Exception\BugFoundException;
use App\Util\Exception\NicknameException;
use App\Util\Exception\NotFoundException;
use App\Util\Exception\NotImplementedException;
use App\Util\Formatting;
use App\Util\Nickname;
use Component\Avatar\Avatar;
use Component\Group\Entity\GroupMember;
use Component\Group\Entity\LocalGroup;
use Component\Language\Entity\ActorLanguage;
use Component\Language\Entity\Language;
use Component\Subscription\Entity\ActorSubscription;
use Functional as F;
/**
* Entity for actors
*
* @category DB
* @package GNUsocial
*
* @author Zach Copley <zach@status.net>
* @copyright 2010 StatusNet Inc.
* @author Mikael Nordfeldth <mmn@hethane.se>
* @copyright 2009-2014 Free Software Foundation, Inc http://www.fsf.org
* @author Hugo Sales <hugo@hsal.es>
* @copyright 2020-2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
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class Actor extends Entity
{
// {{{ Autocode
// @codeCoverageIgnoreStart
private int $id;
private string $nickname;
private ?string $fullname = null;
private int $roles;
private int $type;
private ?string $homepage = null;
private ?string $bio = null;
private ?string $location = null;
private ?float $lat = null;
private ?float $lon = null;
private ?int $location_id = null;
private ?int $location_service = null;
private bool $is_local;
private \DateTimeInterface $created;
private \DateTimeInterface $modified;
public function setId(int $id): self
{
$this->id = $id;
return $this;
}
public function getId(): int
{
return $this->id;
}
public function setNickname(string $nickname): self
{
$this->nickname = \mb_substr($nickname, 0, 64);
return $this;
}
public function getNickname(): string
{
return $this->nickname;
}
public function setFullname(?string $fullname): self
{
$this->fullname = $fullname;
return $this;
}
public function getFullname(): ?string
{
return $this->fullname;
}
public function setRoles(int $roles): self
{
$this->roles = $roles;
return $this;
}
public function getRoles(): int
{
return $this->roles;
}
public function setType(int $type): self
{
$this->type = $type;
return $this;
}
public function getType(): int
{
return $this->type;
}
public function setHomepage(?string $homepage): self
{
$this->homepage = $homepage;
return $this;
}
public function getHomepage(): ?string
{
return $this->homepage;
}
public function setBio(?string $bio): self
{
$this->bio = $bio;
return $this;
}
public function getBio(): ?string
{
return $this->bio;
}
public function setLocation(?string $location): self
{
$this->location = $location;
return $this;
}
public function getLocation(): ?string
{
return $this->location;
}
public function setLat(?float $lat): self
{
$this->lat = $lat;
return $this;
}
public function getLat(): ?float
{
return $this->lat;
}
public function setLon(?float $lon): self
{
$this->lon = $lon;
return $this;
}
public function getLon(): ?float
{
return $this->lon;
}
public function setLocationId(?int $location_id): self
{
$this->location_id = $location_id;
return $this;
}
public function getLocationId(): ?int
{
return $this->location_id;
}
public function setLocationService(?int $location_service): self
{
$this->location_service = $location_service;
return $this;
}
public function getLocationService(): ?int
{
return $this->location_service;
}
public function setIsLocal(bool $is_local): self
{
$this->is_local = $is_local;
return $this;
}
public function getIsLocal(): bool
{
return $this->is_local;
}
public function setCreated(\DateTimeInterface $created): self
{
$this->created = $created;
return $this;
}
public function getCreated(): \DateTimeInterface
{
return $this->created;
}
public function setModified(\DateTimeInterface $modified): self
{
$this->modified = $modified;
return $this;
}
public function getModified(): \DateTimeInterface
{
return $this->modified;
}
// @codeCoverageIgnoreEnd
// }}} Autocode
public const PERSON = 1;
public const GROUP = 2;
public const BOT = 3;
public static function cacheKeys(int|self $actor_id, mixed $other = null): array
{
$actor_id = \is_int($actor_id) ? $actor_id : $actor_id->getId();
return [
'id' => "actor-id-{$actor_id}",
'nickname' => "actor-nickname-id-{$actor_id}",
'fullname' => "actor-fullname-id-{$actor_id}",
'self-tags' => "actor-self-tags-{$actor_id}",
'circles' => "actor-circles-{$actor_id}",
'subscribers' => "subscribers-{$actor_id}",
'subscribed' => "subscribed-{$actor_id}",
'relative-nickname' => "actor-{$actor_id}-relative-nickname-{$other}", // $other is $nickname
'can-admin' => "actor-{$actor_id}-can-admin-{$other}", // $other is an actor id
];
}
/**
* Note: You will receive a Local from Database, it's a persisted instance
*
* @return LocalUser|LocalGroup Returns the local, if actor is local, null otherwise
*/
public function getLocal(): LocalUser|LocalGroup|null
{
if ($this->getIsLocal()) {
switch ($this->getType()) {
case Actor::PERSON:
return DB::findOneBy(LocalUser::class, ['id' => $this->getId()]);
case Actor::GROUP:
return DB::findOneBy(LocalGroup::class, ['actor_id' => $this->getId()]);
case Actor::BOT:
throw new NotImplementedException('We don\'t exactly have a local application abstraction yet...');
}
}
return null;
}
public function getAvatarUrl(string $size = 'medium')
{
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return Avatar::getUrl($this->getId(), $size);
}
public function getAvatarDimensions(string $size = 'medium')
{
return Avatar::getDimensions($this->getId(), $size);
}
public static function getById(int $id): ?self
{
return Cache::get(self::cacheKeys($id)['id'], fn() => DB::findOneBy(self::class, ['id' => $id]));
}
public static function getNicknameById(int $id): string
{
return Cache::get(self::cacheKeys($id)['nickname'], fn() => self::getById($id)->getNickname());
}
public static function getFullnameById(int $id): ?string
{
return Cache::get(self::cacheKeys($id)['fullname'], fn() => self::getById($id)->getFullname());
}
/**
* For consistency with Note
*/
public function getActorId(): int
{
return $this->getId();
}
/**
* @return array ActorTag[] Self Tag Circles of which this actor is a member
*/
public function getSelfTags(): array
{
return Cache::getList(
self::cacheKeys($this->getId())['self-tags'],
fn() => DB::findBy('actor_tag', ['tagger' => $this->getId(), 'tagged' => $this->getId()], order_by: ['modified' => 'DESC']),
);
}
/**
* @return array ActorCircle[]
*/
public function getCircles(): array
{
return Cache::getList(
self::cacheKeys($this->getId())['circles'],
fn() => DB::findBy('actor_circle', ['tagger' => $this->getId()]),
);
}
private function getSubCount(string $which, string $column): int
{
return Cache::get(
self::cacheKeys($this->getId())[$which],
fn() => DB::count(ActorSubscription::class, [$column => $this->getId()]) - ($this->getIsLocal() ? 1 : 0)
);
}
public function getSubscribersCount(): int
{
return $this->getSubCount(which: 'subscribers', column: 'subscribed_id');
}
public function getSubscribedCount(): int
{
return $this->getSubCount(which: 'subscribed', column: 'subscriber_id');
}
public function getSubscriptions(): array
{
return DB::dql(<<<EOF
SELECT a FROM actor AS a
INNER JOIN actor_subscription AS s
WITH a.id = s.subscribed_id
WHERE s.subscriber_id = :self AND a.id != :self
EOF, ['self' => $this->getId()]);
}
public function getSubscribers(): array
{
return DB::dql(<<<EOF
SELECT a FROM actor AS a
INNER JOIN actor_subscription AS s
WITH a.id = s.subscriber_id
WHERE s.subscribed_id = :self AND a.id != :self
EOF, ['self' => $this->getId()]);
}
public function getSubscriptionsUrl(): string
{
return Router::url('actor_subscriptions_id', ['id' => $this->getId()]);
}
public function getSubscribersUrl(): string
{
return Router::url('actor_subscribers_id', ['id' => $this->getId()]);
}
/**
* Resolve an ambiguous nickname reference, checking in following order:
* - Actors that $sender subscribes to
* - Actors that subscribe to $sender
* - Any Actor
*
* @param string $nickname validated nickname of
*
* @throws NicknameException
*/
public function findRelativeActor(string $nickname): ?self
{
// Will throw exception on invalid input.
$nickname = Nickname::normalize($nickname, check_already_used: false);
return Cache::get(
self::cacheKeys($this->getId(), $nickname)['relative-nickname'],
fn () => DB::dql(
<<<'EOF'
SELECT a FROM actor AS a WHERE
a.id IN (SELECT sa.subscribed_id FROM actor_subscription sa JOIN actor aa WITH sa.subscribed_id = aa.id WHERE sa.subscriber_id = :actor_id AND aa.nickname = :nickname) OR
a.id IN (SELECT sb.subscriber_id FROM actor_subscription sb JOIN actor ab WITH sb.subscriber_id = ab.id WHERE sb.subscribed_id = :actor_id AND ab.nickname = :nickname) OR
a.nickname = :nickname
EOF,
['nickname' => $nickname, 'actor_id' => $this->getId()],
['limit' => 1],
)[0] ?? null,
);
}
/**
* Get a URI for this actor, i.e. a unique and stable identifier, using the ID
*/
public function getUri(int $type = Router::ABSOLUTE_URL): string
{
$uri = null;
if (Event::handle('StartGetActorUri', [$this, $type, &$uri]) === Event::next) {
switch ($this->type) {
case self::PERSON:
case self::BOT:
case self::GROUP:
$uri = Router::url('actor_view_id', ['id' => $this->getId()], $type);
break;
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default:
throw new BugFoundException('Actor type added but `Actor::getUri` was not updated');
}
Event::handle('EndGetActorUri', [$this, $type, &$uri]);
}
return $uri;
}
/**
* Get a URL for this actor, i.e. a user friendly URL, using the nickname
*
* @param int $type
* @return string
* @throws BugFoundException
*/
public function getUrl(int $type = Router::ABSOLUTE_URL): string
{
if ($this->getIsLocal()) {
$url = null;
if (Event::handle('StartGetActorUrl', [$this, $type, &$url]) === Event::next) {
$url = match ($this->type) {
self::PERSON, self::BOT => Router::url('person_actor_view_nickname', ['nickname' => mb_strtolower($this->getNickname())], $type),
self::GROUP => Router::url('group_actor_view_nickname', ['nickname' => $this->getNickname()], $type),
default => throw new BugFoundException('Actor type added but `Actor::getUrl` was not updated'),
};
Event::handle('EndGetActorUrl', [$this, $type, &$url]);
}
} else {
return Router::url('actor_view_id', ['id' => $this->getId()], $type);
}
return $url;
}
public function getAliases(): array
{
return array_keys($this->getAliasesWithIDs());
}
public function getAliasesWithIDs(): array
{
$aliases = [];
$aliases[$this->getUri(Router::ABSOLUTE_URL)] = $this->getId();
$aliases[$this->getUrl(Router::ABSOLUTE_URL)] = $this->getId();
return $aliases;
}
public function getTopLanguage(): Language
{
return ActorLanguage::getActorLanguages($this, context: null)[0];
}
/**
* Get the most appropriate language for $this to use when
* referring to $context (a reply or a group, for instance)
*
* @return Language[]
*/
public function getPreferredLanguageChoices(?self $context = null): array
{
$langs = ActorLanguage::getActorLanguages($this, context: $context);
return array_merge(...F\map($langs, fn ($l) => $l->toChoiceFormat()));
}
public function isVisibleTo(null|LocalUser|self $other): bool
{
return true; // TODO
}
/**
* Check whether $this has permission for performing actions on behalf of $other
*/
public function canModerate(self $other): bool
{
if ($this->getIsLocal()) {
switch ($other->getType()) {
case self::PERSON:
return $this->getId() === $other->getId();
case self::GROUP:
return Cache::get(
self::cacheKeys($this->getId(), $other->getId())['can-admin'],
function () use ($other) {
try {
$member_roles = DB::findOneBy(GroupMember::class, ['group_id' => $other->getId(), 'actor_id' => $this->getId()])->getRoles();
// Either a moderator or the group owner
return $member_roles & ActorLocalRoles::MODERATOR || $member_roles & ActorLocalRoles::OPERATOR;
} catch (NotFoundException) {
return false;
}
},
);
default:
return false;
}
} else {
$canAdmin = false;
Event::handle('FreeNetworkActorCanAdmin', [$this, $other, &$canAdmin]);
return $canAdmin;
}
}
/**
* @method bool isPerson()
* @method bool isGroup()
* @method bool isBot()
*/
public function __call(string $name, array $arguments): mixed
{
if (Formatting::startsWith($name, 'is')) {
$type = Formatting::removePrefix($name, 'is');
$const = self::class . '::' . mb_strtoupper($type);
if (\defined($const)) {
return $this->type === \constant($const);
} else {
throw new BugFoundException("Actor cannot be a '{$type}', check your spelling");
}
} else {
return parent::__call($name, $arguments);
}
}
public static function schemaDef(): array
{
return [
'name' => 'actor',
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'description' => 'local and remote users, groups and bots are actors, for instance',
'fields' => [
'id' => ['type' => 'serial', 'not null' => true, 'description' => 'unique identifier'],
'nickname' => ['type' => 'varchar', 'length' => 64, 'not null' => true, 'description' => 'nickname or username'],
'fullname' => ['type' => 'text', 'description' => 'display name', 'default' => null],
'roles' => ['type' => 'int', 'not null' => true, 'description' => 'Bitmap of permissions this actor has'],
'type' => ['type' => 'int', 'not null' => true, 'description' => 'The type of actor (person, group, bot, etc)'],
'homepage' => ['type' => 'text', 'description' => 'identifying URL', 'default' => null],
'bio' => ['type' => 'text', 'description' => 'descriptive biography', 'default' => null],
'location' => ['type' => 'text', 'description' => 'physical location', 'default' => null],
'lat' => ['type' => 'numeric', 'precision' => 10, 'scale' => 7, 'description' => 'latitude', 'default' => null],
'lon' => ['type' => 'numeric', 'precision' => 10, 'scale' => 7, 'description' => 'longitude', 'default' => null],
'location_id' => ['type' => 'int', 'description' => 'location id if possible', 'default' => null],
'location_service' => ['type' => 'int', 'description' => 'service used to obtain location id', 'default' => null],
'is_local' => ['type' => 'bool', 'not null' => true, 'description' => 'Does this actor have a LocalUser associated'],
'created' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was created'],
'modified' => ['type' => 'timestamp', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
],
'primary key' => ['id'],
'indexes' => [
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'actor_nickname_idx' => ['nickname'],
],
'fulltext indexes' => [
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'actor_fulltext_idx' => ['nickname', 'fullname', 'location', 'bio', 'homepage'],
],
];
}
}