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friendica_2020-09-1_sharedH.../src/Model/UserItem.php

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<?php
/**
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* @copyright Copyright (C) 2020, Friendica
*
* @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;
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use Friendica\Core\Logger;
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use Friendica\Core\Hook;
use Friendica\Database\DBA;
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use Friendica\DI;
use Friendica\Util\Strings;
use Friendica\Model\Tag;
class UserItem
{
// Notification types
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const NOTIF_NONE = 0;
const NOTIF_EXPLICIT_TAGGED = 1;
const NOTIF_IMPLICIT_TAGGED = 2;
const NOTIF_THREAD_COMMENT = 4;
const NOTIF_DIRECT_COMMENT = 8;
const NOTIF_COMMENT_PARTICIPATION = 16;
const NOTIF_ACTIVITY_PARTICIPATION = 32;
const NOTIF_DIRECT_THREAD_COMMENT = 64;
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const NOTIF_SHARED = 128;
/**
* Checks an item for notifications and sets the "notification-type" field
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* @ToDo:
* - Check for mentions in posts with "uid=0" where the user hadn't interacted before
*
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* @param int $iid Item ID
*/
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public static function setNotification(int $iid)
{
$fields = ['id', 'uri-id', 'uid', 'body', 'parent', 'gravity', 'tag', 'contact-id', 'thr-parent', 'parent-uri', 'author-id'];
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$item = Item::selectFirst($fields, ['id' => $iid, 'origin' => false]);
if (!DBA::isResult($item)) {
return;
}
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// fetch all users in the thread
$users = DBA::p("SELECT DISTINCT(`contact`.`uid`) FROM `item`
INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id` AND `contact`.`uid` != 0
WHERE `parent` IN (SELECT `parent` FROM `item` WHERE `id`=?)", $iid);
while ($user = DBA::fetch($users)) {
self::setNotificationForUser($item, $user['uid']);
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}
DBA::close($users);
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}
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/**
* Checks an item for notifications for the given user and sets the "notification-type" field
*
* @param array $item Item array
* @param int $uid User ID
*/
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private static function setNotificationForUser(array $item, int $uid)
{
$thread = Item::selectFirstThreadForUser($uid, ['ignored'], ['iid' => $item['parent'], 'deleted' => false]);
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if ($thread['ignored']) {
return;
}
$notification_type = self::NOTIF_NONE;
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if (self::checkShared($item, $uid)) {
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$notification_type = $notification_type | self::NOTIF_SHARED;
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}
$profiles = self::getProfileForUser($uid);
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// Fetch all contacts for the given profiles
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$contacts = [];
$ret = DBA::select('contact', ['id'], ['uid' => 0, 'nurl' => $profiles]);
while ($contact = DBA::fetch($ret)) {
$contacts[] = $contact['id'];
}
DBA::close($ret);
// Don't create notifications for user's posts
if (in_array($item['author-id'], $contacts)) {
return;
}
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if (self::checkImplicitMention($item, $profiles)) {
$notification_type = $notification_type | self::NOTIF_IMPLICIT_TAGGED;
}
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if (self::checkExplicitMention($item, $profiles)) {
$notification_type = $notification_type | self::NOTIF_EXPLICIT_TAGGED;
}
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if (self::checkCommentedThread($item, $contacts)) {
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$notification_type = $notification_type | self::NOTIF_THREAD_COMMENT;
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}
if (self::checkDirectComment($item, $contacts)) {
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$notification_type = $notification_type | self::NOTIF_DIRECT_COMMENT;
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}
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if (self::checkDirectCommentedThread($item, $contacts)) {
$notification_type = $notification_type | self::NOTIF_DIRECT_THREAD_COMMENT;
}
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if (self::checkCommentedParticipation($item, $contacts)) {
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$notification_type = $notification_type | self::NOTIF_COMMENT_PARTICIPATION;
}
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if (self::checkActivityParticipation($item, $contacts)) {
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$notification_type = $notification_type | self::NOTIF_ACTIVITY_PARTICIPATION;
}
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if (empty($notification_type)) {
return;
}
Logger::info('Set notification', ['iid' => $item['id'], 'uid' => $uid, 'notification-type' => $notification_type]);
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DBA::update('user-item', ['notification-type' => $notification_type], ['iid' => $item['id'], 'uid' => $uid], true);
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}
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/**
* Fetch all profiles (contact URL) of a given user
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* @param int $uid User ID
*
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* @return array Profile links
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*/
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private static function getProfileForUser(int $uid)
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{
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$notification_data = ['uid' => $uid, 'profiles' => []];
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Hook::callAll('check_item_notification', $notification_data);
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$profiles = $notification_data['profiles'];
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$user = DBA::selectFirst('user', ['nickname'], ['uid' => $uid]);
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if (!DBA::isResult($user)) {
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return [];
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}
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$owner = DBA::selectFirst('contact', ['url', 'alias'], ['self' => true, 'uid' => $uid]);
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if (!DBA::isResult($owner)) {
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return [];
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}
// This is our regular URL format
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$profiles[] = $owner['url'];
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// Now the alias
$profiles[] = $owner['alias'];
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// Notifications from Diaspora are often with an URL in the Diaspora format
$profiles[] = DI::baseUrl() . '/u/' . $user['nickname'];
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// Validate and add profile links
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foreach ($profiles AS $key => $profile) {
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// Check for invalid profile urls (without scheme, host or path) and remove them
if (empty(parse_url($profile, PHP_URL_SCHEME)) || empty(parse_url($profile, PHP_URL_HOST)) || empty(parse_url($profile, PHP_URL_PATH))) {
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unset($profiles[$key]);
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continue;
}
// Add the normalized form
$profile = Strings::normaliseLink($profile);
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$profiles[] = $profile;
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// Add the SSL form
$profile = str_replace('http://', 'https://', $profile);
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$profiles[] = $profile;
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}
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return array_unique($profiles);
}
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/**
* Check for a "shared" notification for every new post of contacts from the given user
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* @param array $item
* @param int $uid User ID
* @return bool A contact had shared something
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*/
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private static function checkShared(array $item, int $uid)
{
if ($item['gravity'] != GRAVITY_PARENT) {
return false;
}
// Either the contact had posted something directly
if (DBA::exists('contact', ['id' => $item['contact-id'], 'notify_new_posts' => true])) {
return true;
}
// Or the contact is a mentioned forum
$tags = DBA::select('tag-view', ['url'], ['uri-id' => $item['uri-id'], 'type' => [Tag::MENTION, Tag::EXCLUSIVE_MENTION]]);
while ($tag = DBA::fetch($tags)) {
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$condition = ['nurl' => Strings::normaliseLink($tag['url']), 'uid' => $uid, 'notify_new_posts' => true, 'contact-type' => Contact::TYPE_COMMUNITY];
if (DBA::exists('contact', $condition)) {
return true;
}
}
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DBA::close($tags);
return false;
}
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/**
* Check for an implicit mention (only tag, no body) of the given user
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* @param array $item
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* @param array $profiles Profile links
* @return bool The user is mentioned
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*/
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private static function checkImplicitMention(array $item, array $profiles)
{
foreach ($profiles AS $profile) {
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if (strpos($item['tag'], '=' . $profile.']') || strpos($item['body'], '=' . $profile . ']')) {
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if (strpos($item['body'], $profile) === false) {
return true;
}
}
}
return false;
}
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/**
* Check for an explicit mention (tag and body) of the given user
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* @param array $item
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* @param array $profiles Profile links
* @return bool The user is mentioned
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*/
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private static function checkExplicitMention(array $item, array $profiles)
{
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foreach ($profiles AS $profile) {
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if (strpos($item['tag'], '=' . $profile.']') || strpos($item['body'], '=' . $profile . ']')) {
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if (!(strpos($item['body'], $profile) === false)) {
return true;
}
}
}
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return false;
}
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/**
* Check if the given user had created this thread
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* @param array $item
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* @param array $contacts Array of contact IDs
* @return bool The user had created this thread
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*/
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private static function checkCommentedThread(array $item, array $contacts)
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{
$condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_PARENT];
return Item::exists($condition);
}
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/**
* Check for a direct comment to a post of the given user
* @param array $item
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* @param array $contacts Array of contact IDs
* @return bool The item is a direct comment to a user comment
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*/
private static function checkDirectComment(array $item, array $contacts)
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{
$condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_COMMENT];
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return Item::exists($condition);
}
/**
* Check for a direct comment to the starting post of the given user
* @param array $item
* @param array $contacts Array of contact IDs
* @return bool The user had created this thread
*/
private static function checkDirectCommentedThread(array $item, array $contacts)
{
$condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_PARENT];
return Item::exists($condition);
}
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/**
* Check if the user had commented in this thread
* @param array $item
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* @param array $contacts Array of contact IDs
* @return bool The user had commented in the thread
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*/
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private static function checkCommentedParticipation(array $item, array $contacts)
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{
$condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_COMMENT];
return Item::exists($condition);
}
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/**
* Check if the user had interacted in this thread (Like, Dislike, ...)
* @param array $item
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* @param array $contacts Array of contact IDs
* @return bool The user had interacted in the thread
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*/
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private static function checkActivityParticipation(array $item, array $contacts)
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{
$condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY];
return Item::exists($condition);
}
}