Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @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;
use BadMethodCallException;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\Database\Database;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
use Friendica\Protocol\Activity;
class Post
{
/**
* Insert a new post entry
*
* @param integer $uri_id
* @param array $fields
* @return int ID of inserted post
* @throws \Exception
*/
public static function insert(int $uri_id, array $data = [])
{
if (empty($uri_id)) {
throw new BadMethodCallException('Empty URI_id');
}
$fields = DBStructure::getFieldsForTable('post', $data);
// Additionally assign the key fields
$fields['uri-id'] = $uri_id;
if (!DBA::insert('post', $fields, Database::INSERT_IGNORE)) {
return 0;
}
return DBA::lastInsertId();
}
/**
* Fetch a single post row
*
* @param mixed $stmt statement object
* @return array|false current row or false
* @throws \Exception
*/
public static function fetch($stmt)
{
$row = DBA::fetch($stmt);
if (!is_array($row)) {
return $row;
}
if (array_key_exists('verb', $row)) {
if (in_array($row['verb'], Item::ACTIVITIES)) {
if (array_key_exists('title', $row)) {
$row['title'] = '';
}
if (array_key_exists('body', $row)) {
$row['body'] = $row['verb'];
}
if (array_key_exists('object', $row)) {
$row['object'] = '';
}
if (array_key_exists('object-type', $row)) {
$row['object-type'] = Activity\ObjectType::NOTE;
}
} elseif (in_array($row['verb'], ['', Activity::POST, Activity::SHARE])) {
// Posts don't have a target - but having tags or files.
if (array_key_exists('target', $row)) {
$row['target'] = '';
}
}
}
if (array_key_exists('extid', $row) && is_null($row['extid'])) {
$row['extid'] = '';
}
return $row;
}
/**
* Fills an array with data from an post query
*
* @param object $stmt statement object
* @param bool $do_close
* @return array Data array
*/
public static function toArray($stmt, $do_close = true) {
if (is_bool($stmt)) {
return $stmt;
}
$data = [];
while ($row = self::fetch($stmt)) {
$data[] = $row;
}
if ($do_close) {
DBA::close($stmt);
}
return $data;
}
/**
* Check if post data exists
*
* @param array $condition array of fields for condition
*
* @return boolean Are there rows for that condition?
* @throws \Exception
*/
public static function exists($condition) {
return DBA::exists('post-user-view', $condition);
}
/**
* Counts the posts satisfying the provided condition
*
* @param array $condition array of fields for condition
* @param array $params Array of several parameters
*
* @return int
*
* Example:
* $condition = ["uid" => 1, "network" => 'dspr'];
* or:
* $condition = ["`uid` = ? AND `network` IN (?, ?)", 1, 'dfrn', 'dspr'];
*
* $count = Post::count($condition);
* @throws \Exception
*/
public static function count(array $condition = [], array $params = [])
{
return DBA::count('post-user-view', $condition, $params);
}
/**
* Retrieve a single record from the post table and returns it in an associative array
*
* @param array $fields
* @param array $condition
* @param array $params
* @return bool|array
* @throws \Exception
* @see DBA::select
*/
public static function selectFirst(array $fields = [], array $condition = [], $params = [])
{
$params['limit'] = 1;
$result = self::select($fields, $condition, $params);
if (is_bool($result)) {
return $result;
} else {
$row = self::fetch($result);
DBA::close($result);
return $row;
}
}
/**
* Retrieve a single record from the post-thread table and returns it in an associative array
*
* @param array $fields
* @param array $condition
* @param array $params
* @return bool|array
* @throws \Exception
* @see DBA::select
*/
public static function selectFirstThread(array $fields = [], array $condition = [], $params = [])
{
$params['limit'] = 1;
$result = self::selectThread($fields, $condition, $params);
if (is_bool($result)) {
return $result;
} else {
$row = self::fetch($result);
DBA::close($result);
return $row;
}
}
/**
* Select rows from the post table and returns them as an array
*
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return array
* @throws \Exception
*/
public static function selectToArray(array $fields = [], array $condition = [], $params = [])
{
$result = self::select($fields, $condition, $params);
if (is_bool($result)) {
return [];
}
$data = [];
while ($row = self::fetch($result)) {
$data[] = $row;
}
DBA::close($result);
return $data;
}
/**
* Select rows from the given view
*
* @param string $view View (post-user-view or post-thread-user-view)
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
private static function selectView(string $view, array $selected = [], array $condition = [], $params = [])
{
if (empty($selected)) {
$selected = array_merge(Item::DISPLAY_FIELDLIST, Item::ITEM_FIELDLIST);
if ($view == 'post-thread-user-view') {
$selected = array_merge($selected, ['ignored']);
}
}
$selected = array_unique($selected);
return DBA::select($view, $selected, $condition, $params);
}
/**
* Select rows from the post table
*
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
public static function select(array $selected = [], array $condition = [], $params = [])
{
return self::selectView('post-user-view', $selected, $condition, $params);
}
/**
* Select rows from the post table
*
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
public static function selectThread(array $selected = [], array $condition = [], $params = [])
{
return self::selectView('post-thread-user-view', $selected, $condition, $params);
}
/**
* Select rows from the given view for a given user
*
* @param string $view View (post-user-view or post-thread-user-view)
* @param integer $uid User ID
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
private static function selectViewForUser(string $view, $uid, array $selected = [], array $condition = [], $params = [])
{
if (empty($selected)) {
$selected = Item::DISPLAY_FIELDLIST;
}
$condition = DBA::mergeConditions($condition,
["`visible` AND NOT `deleted`
AND NOT `author-blocked` AND NOT `owner-blocked`
AND (NOT `causer-blocked` OR `causer-id` = ? OR `causer-id` IS NULL) AND NOT `contact-blocked`
AND ((NOT `contact-readonly` AND NOT `contact-pending` AND (`contact-rel` IN (?, ?)))
OR `self` OR `gravity` != ? OR `contact-uid` = ?)
AND NOT EXISTS (SELECT `uri-id` FROM `post-user` WHERE `uid` = ? AND `uri-id` = `" . $view . "`.`uri-id` AND `hidden`)
AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `author-id` AND `blocked`)
AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `owner-id` AND `blocked`)
AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `author-id` AND `ignored` AND `gravity` = ?)
AND NOT EXISTS (SELECT `cid` FROM `user-contact` WHERE `uid` = ? AND `cid` = `owner-id` AND `ignored` AND `gravity` = ?)",
0, Contact::SHARING, Contact::FRIEND, GRAVITY_PARENT, 0, $uid, $uid, $uid, $uid, GRAVITY_PARENT, $uid, GRAVITY_PARENT]);
$select_string = implode(', ', array_map([DBA::class, 'quoteIdentifier'], $selected));
$condition_string = DBA::buildCondition($condition);
$param_string = DBA::buildParameter($params);
$sql = "SELECT " . $select_string . " FROM `" . $view . "` " . $condition_string . $param_string;
$sql = DBA::cleanQuery($sql);
return DBA::p($sql, $condition);
}
/**
* Select rows from the post view for a given user
*
* @param integer $uid User ID
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
public static function selectForUser($uid, array $selected = [], array $condition = [], $params = [])
{
return self::selectViewForUser('post-user-view', $uid, $selected, $condition, $params);
}
/**
* Select rows from the post view for a given user
*
* @param integer $uid User ID
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
public static function selectThreadForUser($uid, array $selected = [], array $condition = [], $params = [])
{
return self::selectViewForUser('post-thread-user-view', $uid, $selected, $condition, $params);
}
/**
* Retrieve a single record from the post view for a given user and returns it in an associative array
*
* @param integer $uid User ID
* @param array $selected
* @param array $condition
* @param array $params
* @return bool|array
* @throws \Exception
* @see DBA::select
*/
public static function selectFirstForUser($uid, array $selected = [], array $condition = [], $params = [])
{
$params['limit'] = 1;
$result = self::selectForUser($uid, $selected, $condition, $params);
if (is_bool($result)) {
return $result;
} else {
$row = self::fetch($result);
DBA::close($result);
return $row;
}
}
/**
* Select pinned rows from the item table for a given user
*
* @param integer $uid User ID
* @param array $selected Array of selected fields, empty for all
* @param array $condition Array of fields for condition
* @param array $params Array of several parameters
*
* @return boolean|object
* @throws \Exception
*/
public static function selectPinned(int $uid, array $selected = [], array $condition = [], $params = [])
{
$postthreaduser = DBA::select('post-thread-user', ['uri-id'], ['uid' => $uid, 'pinned' => true]);
if (!DBA::isResult($postthreaduser)) {
return $postthreaduser;
}
$pinned = [];
while ($useritem = DBA::fetch($postthreaduser)) {
$pinned[] = $useritem['uri-id'];
}
DBA::close($postthreaduser);
if (empty($pinned)) {
return [];
}
$condition = DBA::mergeConditions(['uri-id' => $pinned, 'uid' => $uid, 'gravity' => GRAVITY_PARENT], $condition);
return self::selectForUser($uid, $selected, $condition, $params);
}
/**
* Update existing post entries
*
* @param array $fields The fields that are to be changed
* @param array $condition The condition for finding the item entries
*
* A return value of "0" doesn't mean an error - but that 0 rows had been changed.
*
* @return integer|boolean number of affected rows - or "false" if there was an error
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function update(array $fields, array $condition)
{
$affected = 0;
Logger::info('Start Update', ['fields' => $fields, 'condition' => $condition, 'uid' => local_user(),'callstack' => System::callstack(10)]);
// Don't allow changes to fields that are responsible for the relation between the records
unset($fields['id']);
unset($fields['parent']);
unset($fields['uid']);
unset($fields['uri']);
unset($fields['uri-id']);
unset($fields['thr-parent']);
unset($fields['thr-parent-id']);
unset($fields['parent-uri']);
unset($fields['parent-uri-id']);
$thread_condition = DBA::mergeConditions($condition, ['gravity' => GRAVITY_PARENT]);
// To ensure the data integrity we do it in an transaction
DBA::transaction();
$update_fields = DBStructure::getFieldsForTable('post-user', $fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['post-user-id'], $condition);
while ($rows = DBA::toArray($posts, false, 100)) {
$puids = array_column($rows, 'post-user-id');
if (!DBA::update('post-user', $update_fields, ['id' => $puids])) {
DBA::rollback();
Logger::notice('Updating post-user failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = $affected_count;
}
$update_fields = DBStructure::getFieldsForTable('post-content', $fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
while ($rows = DBA::toArray($posts, false, 100)) {
$uriids = array_column($rows, 'uri-id');
if (!DBA::update('post-content', $update_fields, ['uri-id' => $uriids])) {
DBA::rollback();
Logger::notice('Updating post-content failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = max($affected, $affected_count);
}
$update_fields = DBStructure::getFieldsForTable('post', $fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
while ($rows = DBA::toArray($posts, false, 100)) {
$uriids = array_column($rows, 'uri-id');
if (!DBA::update('post', $update_fields, ['uri-id' => $uriids])) {
DBA::rollback();
Logger::notice('Updating post failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = max($affected, $affected_count);
}
$update_fields = Post\DeliveryData::extractFields($fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['uri-id'], $condition, ['group_by' => ['uri-id']]);
while ($rows = DBA::toArray($posts, false, 100)) {
$uriids = array_column($rows, 'uri-id');
if (!DBA::update('post-delivery-data', $update_fields, ['uri-id' => $uriids])) {
DBA::rollback();
Logger::notice('Updating post-delivery-data failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = max($affected, $affected_count);
}
$update_fields = DBStructure::getFieldsForTable('post-thread', $fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['uri-id'], $thread_condition, ['group_by' => ['uri-id']]);
while ($rows = DBA::toArray($posts, false, 100)) {
$uriids = array_column($rows, 'uri-id');
if (!DBA::update('post-thread', $update_fields, ['uri-id' => $uriids])) {
DBA::rollback();
Logger::notice('Updating post-thread failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = max($affected, $affected_count);
}
$update_fields = DBStructure::getFieldsForTable('post-thread-user', $fields);
if (!empty($update_fields)) {
$affected_count = 0;
$posts = DBA::select('post-user-view', ['post-user-id'], $thread_condition);
while ($rows = DBA::toArray($posts, false, 100)) {
$thread_puids = array_column($rows, 'post-user-id');
if (!DBA::update('post-thread-user', $update_fields, ['post-user-id' => $thread_puids])) {
DBA::rollback();
Logger::notice('Updating post-thread-user failed', ['fields' => $update_fields, 'condition' => $condition]);
return false;
}
$affected_count += DBA::affectedRows();
}
DBA::close($posts);
$affected = max($affected, $affected_count);
}
DBA::commit();
Logger::info('Updated posts', ['rows' => $affected]);
return $affected;
}
/**
* Delete a row from the post table
*
* @param array $conditions Field condition(s)
* @param array $options
* - cascade: If true we delete records in other tables that depend on the one we're deleting through
* relations (default: true)
*
* @return boolean was the delete successful?
* @throws \Exception
*/
public static function delete(array $conditions, array $options = [])
{
return DBA::delete('post', $conditions, $options);
}
}