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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* 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 <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
class SupAction extends Action
{
function handle($args)
{
parent::handle($args);
$seconds = $this->trimmed('seconds');
if (!$seconds) {
$seconds = 15;
}
$updates = $this->getUpdates($seconds);
header('Content-Type: application/json; charset=utf-8');
print json_encode(array('updated_time' => date('c'),
'since_time' => date('c', time() - $seconds),
'available_periods' => $this->availablePeriods(),
'period' => $seconds,
'updates' => $updates));
}
function availablePeriods()
{
static $periods = array(86400, 43200, 21600, 7200,
3600, 1800, 600, 300, 120,
60, 30, 15);
$available = array();
foreach ($periods as $period) {
$available[$period] = common_local_url('sup',
array('seconds' => $period));
}
return $available;
}
function getUpdates($seconds)
{
$notice = new Notice();
# XXX: cache this. Depends on how big this protocol becomes;
# Re-doing this query every 15 seconds isn't the end of the world.
$notice->query('SELECT profile_id, max(id) AS max_id ' .
'FROM notice ' .
((common_config('db','type') == 'pgsql') ?
'WHERE extract(epoch from created) > (extract(epoch from now()) - ' . $seconds . ') ' :
'WHERE created > (now() - ' . $seconds . ') ' ) .
'GROUP BY profile_id');
$updates = array();
while ($notice->fetch()) {
$updates[] = array($notice->profile_id, $notice->max_id);
}
return $updates;
}
function isReadOnly()
{
return true;
}
}
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