mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/DiscussionTools
synced 2024-11-30 19:16:39 +00:00
359 lines
8.7 KiB
PHP
359 lines
8.7 KiB
PHP
<?php
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namespace MediaWiki\Extension\DiscussionTools;
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use Config;
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use ConfigFactory;
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use MediaWiki\Linker\LinkTarget;
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use MediaWiki\User\UserFactory;
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use MediaWiki\User\UserIdentity;
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use MediaWiki\User\UserIdentityUtils;
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use ReadOnlyMode;
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use stdClass;
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use TitleValue;
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use Wikimedia\Rdbms\FakeResultWrapper;
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use Wikimedia\Rdbms\IConnectionProvider;
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use Wikimedia\Rdbms\IReadableDatabase;
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use Wikimedia\Rdbms\IResultWrapper;
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class SubscriptionStore {
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/**
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* Constants for the values of the sub_state field.
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*/
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public const STATE_UNSUBSCRIBED = 0;
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public const STATE_SUBSCRIBED = 1;
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public const STATE_AUTOSUBSCRIBED = 2;
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private Config $config;
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private IConnectionProvider $dbProvider;
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private ReadOnlyMode $readOnlyMode;
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private UserFactory $userFactory;
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private UserIdentityUtils $userIdentityUtils;
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public function __construct(
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ConfigFactory $configFactory,
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IConnectionProvider $dbProvider,
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ReadOnlyMode $readOnlyMode,
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UserFactory $userFactory,
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UserIdentityUtils $userIdentityUtils
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) {
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$this->config = $configFactory->makeConfig( 'discussiontools' );
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$this->dbProvider = $dbProvider;
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$this->readOnlyMode = $readOnlyMode;
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$this->userFactory = $userFactory;
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$this->userIdentityUtils = $userIdentityUtils;
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}
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/**
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* @param IReadableDatabase $db
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* @param UserIdentity|null $user
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* @param array|null $itemNames
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* @param int|int[]|null $state One of (or an array of) SubscriptionStore::STATE_* constants
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* @return IResultWrapper|false
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*/
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private function fetchSubscriptions(
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IReadableDatabase $db,
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?UserIdentity $user = null,
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?array $itemNames = null,
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$state = null
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) {
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$conditions = [];
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if ( $user ) {
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$conditions[ 'sub_user' ] = $user->getId();
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}
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if ( $itemNames !== null ) {
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if ( !count( $itemNames ) ) {
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// We are not allowed to construct a filter with an empty array.
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// Any empty array should result in no items being returned.
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return new FakeResultWrapper( [] );
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}
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$conditions[ 'sub_item' ] = $itemNames;
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}
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if ( $state !== null ) {
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$conditions[ 'sub_state' ] = $state;
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}
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return $db->newSelectQueryBuilder()
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->from( 'discussiontools_subscription' )
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->fields( [
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'sub_user', 'sub_item', 'sub_namespace', 'sub_title', 'sub_section', 'sub_state',
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'sub_created', 'sub_notified'
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] )
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->where( $conditions )
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->caller( __METHOD__ )
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->fetchResultSet();
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}
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/**
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* @param UserIdentity $user
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* @param array|null $itemNames
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* @param int[]|null $state Array of SubscriptionStore::STATE_* constants
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* @param array $options
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* @return SubscriptionItem[]
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*/
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public function getSubscriptionItemsForUser(
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UserIdentity $user,
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?array $itemNames = null,
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?array $state = null,
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array $options = []
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): array {
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// Only a registered user can be subscribed
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if ( !$user->isRegistered() || $this->userIdentityUtils->isTemp( $user ) ) {
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return [];
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}
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$options += [ 'forWrite' => false ];
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if ( $options['forWrite'] ) {
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$db = $this->dbProvider->getPrimaryDatabase();
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} else {
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$db = $this->dbProvider->getReplicaDatabase();
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}
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$rows = $this->fetchSubscriptions(
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$db,
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$user,
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$itemNames,
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$state
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);
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if ( !$rows ) {
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return [];
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}
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$items = [];
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foreach ( $rows as $row ) {
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$target = new TitleValue( (int)$row->sub_namespace, $row->sub_title, $row->sub_section );
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$items[] = $this->getSubscriptionItemFromRow( $user, $target, $row );
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}
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return $items;
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}
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/**
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* @param string $itemName
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* @param int[]|null $state An array of SubscriptionStore::STATE_* constants
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* @param array $options
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* @return array
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*/
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public function getSubscriptionItemsForTopic(
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string $itemName,
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?array $state = null,
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array $options = []
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): array {
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$options += [ 'forWrite' => false ];
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if ( $options['forWrite'] ) {
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$db = $this->dbProvider->getPrimaryDatabase();
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} else {
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$db = $this->dbProvider->getReplicaDatabase();
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}
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$rows = $this->fetchSubscriptions(
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$db,
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null,
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[ $itemName ],
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$state
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);
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if ( !$rows ) {
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return [];
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}
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$items = [];
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foreach ( $rows as $row ) {
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$target = new TitleValue( (int)$row->sub_namespace, $row->sub_title, $row->sub_section );
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$user = $this->userFactory->newFromId( $row->sub_user );
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$items[] = $this->getSubscriptionItemFromRow( $user, $target, $row );
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}
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return $items;
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}
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/**
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* @param UserIdentity $user
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* @param LinkTarget $target
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* @param stdClass $row
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* @return SubscriptionItem
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*/
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private function getSubscriptionItemFromRow(
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UserIdentity $user,
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LinkTarget $target,
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stdClass $row
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): SubscriptionItem {
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return new SubscriptionItem(
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$user,
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$row->sub_item,
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$target,
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$row->sub_state,
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$row->sub_created,
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$row->sub_notified
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);
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}
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/**
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* @param UserIdentity $user
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* @param LinkTarget $target
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* @param string $itemName
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* @param int $state
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* @return bool
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*/
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public function addSubscriptionForUser(
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UserIdentity $user,
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LinkTarget $target,
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string $itemName,
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// Can not use static:: in compile-time constants
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int $state = self::STATE_SUBSCRIBED
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): bool {
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if ( $this->readOnlyMode->isReadOnly() ) {
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return false;
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}
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// Only a registered user can subscribe
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if ( !$user->isRegistered() || $this->userIdentityUtils->isTemp( $user ) ) {
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return false;
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}
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$section = $target->getFragment();
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// Truncate to the database field length, taking care not to mess up multibyte characters,
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// appending a marker so that we can recognize this happened and display an ellipsis later.
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// Using U+001F "Unit Separator" seems appropriate, and it can't occur in wikitext.
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$truncSection = strlen( $section ) > 254 ? mb_strcut( $section, 0, 254 ) . "\x1f" : $section;
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$dbw = $this->dbProvider->getPrimaryDatabase();
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$dbw->newInsertQueryBuilder()
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->table( 'discussiontools_subscription' )
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->row( [
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'sub_user' => $user->getId(),
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'sub_namespace' => $target->getNamespace(),
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'sub_title' => $target->getDBkey(),
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'sub_section' => $truncSection,
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'sub_item' => $itemName,
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'sub_state' => $state,
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'sub_created' => $dbw->timestamp(),
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] )
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->onDuplicateKeyUpdate()
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->uniqueIndexFields( [ 'sub_user', 'sub_item' ] )
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->set( [
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'sub_state' => $state,
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] )
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->caller( __METHOD__ )->execute();
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return (bool)$dbw->affectedRows();
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}
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/**
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* @param UserIdentity $user
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* @param string $itemName
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* @return bool
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*/
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public function removeSubscriptionForUser(
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UserIdentity $user,
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string $itemName
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): bool {
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if ( $this->readOnlyMode->isReadOnly() ) {
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return false;
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}
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// Only a registered user can subscribe
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if ( !$user->isRegistered() || $this->userIdentityUtils->isTemp( $user ) ) {
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return false;
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}
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$dbw = $this->dbProvider->getPrimaryDatabase();
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$dbw->newUpdateQueryBuilder()
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->table( 'discussiontools_subscription' )
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->set( [ 'sub_state' => static::STATE_UNSUBSCRIBED ] )
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->where( [
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'sub_user' => $user->getId(),
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'sub_item' => $itemName,
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] )
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->caller( __METHOD__ )
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->execute();
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return (bool)$dbw->affectedRows();
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}
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/**
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* @param UserIdentity $user
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* @param LinkTarget $target
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* @param string $itemName
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* @return bool
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*/
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public function addAutoSubscriptionForUser(
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UserIdentity $user,
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LinkTarget $target,
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string $itemName
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): bool {
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// Check for existing subscriptions.
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$subscriptionItems = $this->getSubscriptionItemsForUser(
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$user,
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[ $itemName ],
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[ static::STATE_SUBSCRIBED, static::STATE_AUTOSUBSCRIBED ],
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[ 'forWrite' => true ]
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);
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if ( $subscriptionItems ) {
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return false;
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}
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return $this->addSubscriptionForUser(
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$user,
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$target,
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$itemName,
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static::STATE_AUTOSUBSCRIBED
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);
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}
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/**
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* @param string $field Timestamp field name
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* @param UserIdentity|null $user
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* @param string $itemName
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* @return bool
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*/
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private function updateSubscriptionTimestamp(
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string $field,
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?UserIdentity $user,
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string $itemName
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): bool {
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if ( $this->readOnlyMode->isReadOnly() ) {
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return false;
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}
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$dbw = $this->dbProvider->getPrimaryDatabase();
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$conditions = [
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'sub_item' => $itemName,
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];
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if ( $user ) {
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$conditions[ 'sub_user' ] = $user->getId();
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}
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$dbw->newUpdateQueryBuilder()
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->table( 'discussiontools_subscription' )
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->set( [ $field => $dbw->timestamp() ] )
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->where( $conditions )
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->caller( __METHOD__ )
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->execute();
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return (bool)$dbw->affectedRows();
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}
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/**
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* Update the notified timestamp on a subscription
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*
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* This field could be used in future to cleanup notifications
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* that are no longer needed (e.g. because the conversation has
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* been archived), so should be set for muted notifications too.
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*
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* @param UserIdentity|null $user
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* @param string $itemName
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* @return bool
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*/
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public function updateSubscriptionNotifiedTimestamp(
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?UserIdentity $user,
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string $itemName
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): bool {
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return $this->updateSubscriptionTimestamp(
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'sub_notified',
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$user,
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$itemName
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);
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}
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}
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