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<?php
/* Foursquare Community Site
*
* Copyright (C) 2011 Foursquare Church.
*
* Developers: Jesse Morgan <jmorgan@foursquarestaff.com>
*
*/
require_once "base.inc.php";
class ModerationSchedule implements Iterator {
private $moderators;
private $exceptions;
private $year;
private $week;
private $expos;
private $moderator;
private $exceptionfor;
public function __construct() {
$this->moderators = array();
$this->exceptions = array();
}
public function getNumberOfModerators() {
return count($this->moderators);
}
// Iterator methods
public function rewind() {
$this->year = date('o') + 0;
$this->week = date('W') + 0;
$this->expos = 0;
$this->nextModerator();
}
public function current() {
return $this->moderator;
}
public function key() {
return strtotime($this->year . 'W' .
($this->week < 10 ? '0' : '') . $this->week);
}
public function next() {
if ($this->week == 53) {
// Check for leap year
if (date('N', mktime(0, 0, 0, 1, 1, $this->year)) == 4
or date('N', mktime(0, 0, 0, 12, 31, $this->year)) == 4) {
$this->week++;
} else {
$this->week = 1;
$this->year++;
}
} else if ($this->week > 53) {
$this->week = 1;
$this->year++;
} else {
$this->week++;
}
$this->nextModerator();
}
private function nextModerator() {
// Clear out the exception flag.
$this->exceptionfor = null;
// Get the scheduled mod.
$modpos = $this->week % $this->getNumberOfModerators();
$this->moderator = User::getById($this->moderators[$modpos]['user_id']);
// Check for exceptions
// TODO: Refactor this exception code to use the ModerationException iterator.
if (count($this->exceptions) > 0) {
// Skip exceptions prior to the current() date.
while (
// We have exceptions to search
$this->expos < (count($this->exceptions) - 1) and
// and the year is less than the current() year
($this->exceptions[$this->expos]['year'] < $this->year or
// or if it is the current() year, but less than the week.
($this->exceptions[$this->expos]['year'] == $this->year
and $this->exceptions[$this->expos]['week'] < $this->week))
) {
$this->expos++;
}
// Check if any of the top exception apply today.
while($this->exceptions[$this->expos]['year'] == $this->year
and $this->exceptions[$this->expos]['week'] == $this->week) {
if ($this->exceptions[$this->expos]['user_id'] == $this->moderator->getId()) {
// Yes, return the replacement
$this->exceptionfor = $this->moderator;
$this->moderator = User::getById($this->exceptions[$this->expos]['substitute']);
break;
}
$this->expos++;
}
}
}
public function valid() {
// The schedule continues forever.
return true;
}
public function isException() {
return $this->exceptionfor !== null;
}
public function getExceptionFor() {
return $this->exceptionfor;
}
public function query() {
$db = getDatabase();
// Get the moderators
$query = "SELECT * FROM moderator_schedule ORDER BY position";
$this->moderators = $db->fetchAssocRows($query);
// Get the exceptions
$year = date('o');
$week = date('W');
$query = "SELECT * FROM moderator_exceptions"
. " WHERE year >= $year AND week >= $week"
. " ORDER BY year, week";
$this->exceptions = $db->fetchAssocRows($query);
$this->rewind();
}
}
?>
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