/**
* Function to be run periodically according to the moodle cron
* This function searches for things that need to be done, such
* as sending out mail, toggling flags etc ...
*
* @uses $CFG
* @return boolean
* @todo Finish documenting this function
**/
function podcaster_cron()
{
global $CFG;
require_once $CFG->dirroot . '/mod/podcaster/locallib.php';
$modconf = get_record('modules', 'name', 'podcaster');
$lastcron = $modconf->lastcron * 1;
$channelupdate = array();
$repositoryupdate = array();
$metachannelupdate = array();
// find channels modified past lastcron
$channels = get_records_select('podcaster', 'timemodified > ' . $lastcron . ' AND ismeta = 0');
if ($channels) {
foreach ($channels as $channel) {
$channelupdate['' . $channel->id] = PODCASTER_UPDATEREPOSITORY;
}
}
// find items scheduled > lastcron && < now ()
$items = get_records_select('podcaster_item', '(scheduledtime > ' . $lastcron . ' AND scheduledtime < ' . time() . ')');
if ($items != false) {
foreach ($items as $item) {
$channelupdate['' . $item->channel] = PODCASTER_UPDATESELF;
// implies update repository
}
}
// update channel rss feeds
foreach ($channelupdate as $id => $subject) {
$c = get_record('podcaster', 'id', $id);
if (!$c) {
continue;
}
$cm = get_coursemodule_from_instance('podcaster', $id);
if (!$cm) {
continue;
}
$channel = podcaster_channel::create_channel($c, $cm);
if ($subject == PODCASTER_UPDATESELF) {
$channel->update_rss();
}
$repositoryupdate[$channel->repository] = true;
}
// check for modified meta channels
$metachannels = get_records('podcaster_metachannel');
if ($metachannels) {
foreach ($metachannels as $metachannel) {
if ($metachannel->timemodified > $lastcron) {
$metachannelupdate[$metachannel->id . ''] = $metachannel;
} elseif ($metachannel->target == 'repository') {
$params = explode(',', $metachannel->params);
foreach ($params as $p) {
if (array_key_exists($p, $repositoryupdate)) {
$metachannelupdate[$metachannel->id . ''] = $metachannel;
}
}
}
}
}
foreach ($metachannelupdate as $metachannel) {
$channel = podcaster_channel::create_metachannel($metachannel);
$channel->update_rss();
}
return true;
}
function process_toolsform(&$formdata)
{
global $CFG;
$error_reporting = ini_get('error_reporting');
$display_errors = ini_get('display_errors');
ini_set('error_reporting', E_ALL);
ini_set('display_errors', 'On');
if (isset($formdata->updatechannels)) {
include_once $CFG->dirroot . '/mod/podcaster/lib/public.php';
include_once $CFG->dirroot . '/mod/podcaster/lib/util.php';
$start = microtime();
echo '<pre>Clearing cache ...</pre>';
flush();
execute_sql('UPDATE ' . $CFG->prefix . 'podcaster_item SET enclosureurl = \'\', enclosurelength = 0, enclosuretype = \'\'');
execute_sql('UPDATE ' . $CFG->prefix . 'podcaster SET imageurl = \'\', imagewidth = 0, imageheight = 0, imagetype = \'\', imagelength = 0 WHERE ismeta = 0');
$channels = get_records('podcaster', 'ismeta', '0');
echo '<pre>Updating all channels ...</pre>';
flush();
if ($channels) {
foreach ($channels as $channel) {
echo '<pre> Updating ' . $channel->id . ': ' . htmlspecialchars($channel->name) . '</pre>';
flush();
$channelstart = microtime();
$channelObj = podcaster_channel::create_channel($channel);
$channelObj->update_rss();
echo '<pre><a href="' . $channelObj->get_rss_link() . '">RSS</a> <a href="' . $CFG->wwwroot . '/mod/podcaster/view.php?channel=' . $channelObj->id . '">HTML</a></pre>';
echo '<pre> done in ' . podcaster_util::time_diff($channelstart, microtime()) . '</pre>';
flush();
}
}
echo '<pre>done in ' . podcaster_util::time_diff($start, microtime()) . '</pre>';
die;
} elseif (isset($formdata->updatemetachannels)) {
include_once $CFG->dirroot . '/mod/podcaster/lib/public.php';
include_once $CFG->dirroot . '/mod/podcaster/lib/util.php';
$start = microtime();
echo '<pre>Clearing cache ...</pre>';
execute_sql('UPDATE ' . $CFG->prefix . 'podcaster SET imageurl = \'\', imagewidth = 0, imageheight = 0, imagetype = \'\', imagelength = 0 WHERE ismeta = 1');
$channels = get_records('podcaster_metachannel');
echo '<pre>Updating all metachannels ...</pre>';
flush();
if ($channels) {
foreach ($channels as $channel) {
echo '<pre> Updating ' . $channel->id . ': ' . htmlspecialchars($channel->name) . '</pre>';
flush();
$channelstart = microtime();
$channelObj = podcaster_channel::create_metachannel($channel);
$channelObj->update_rss();
echo '<pre><a href="' . $channelObj->get_rss_link() . '">RSS</a> <a href="' . $CFG->wwwroot . '/mod/podcaster/view.php?channel=' . $channelObj->id . '">HTML</a></pre>';
echo '<pre> done in ' . podcaster_util::time_diff($channelstart, microtime()) . '</pre>';
flush();
}
}
echo '<pre>done in ' . podcaster_util::time_diff($start, microtime()) . '</pre>';
die;
}
ini_set('error_reporting', $error_reporting);
ini_set('display_errors', $display_errors);
return PODCASTER_NOERROR;
}
