<?php

class RemindMessage extends Message {
	public function process() {
		$this->message = trim($this->message);
		$timeSeparators = array(' in ',' at ',' on ',' tomorrow');
		$seppos = -1;
		$sepposend = 0;
		$tomorrow = false;
		// find which separator is used
		foreach ($timeSeparators as $sep) {
			$offset = 0;
			// find the last use of this separator
			while (($thisseppos = strpos($this->message,$sep,$offset)) !== false) {
				$offset = $thisseppos+1;
			}
			$thisseppos = $offset-1;
			// is this the separator?
			if ($thisseppos > $seppos) {
				$seppos = $thisseppos;
				$sepposend = $seppos + strlen($sep);
				if ($sep == ' tomorrow') {
					$tomorrow = true;
				}
			}
		}
		$message = substr($this->message,0,$seppos);
		$timestring = substr($this->message,$sepposend);
		// expand 'a' and 'p' to 'am' and 'pm', respectively
		$timestring = str_replace(array('a ','p '),array('am ','pm '),$timestring);
		$timestring = preg_replace('/a$/','am',$timestring);
		$timestring = preg_replace('/p$/','pm',$timestring);
		if ($tomorrow && $timestring == '') {
			// if time is "tomorrow", add what time
			$utctime = strtotime('tomorrow '.date('H:i:s'));
		} elseif (in_array(strtolower($timestring),array('sun','mon','tues','wed','thurs','thu','fri','sat','sunday','monday','tuesday','wednesday','thursday','friday','saturday'))) {
			// if the time is just a day of the week, add the time
			$utctime = strtotime(date('Y-m-d',strtotime($timestring)).' '.date('H:i:s'));
		} else {
			// fall back on php
			$utctime = strtotime($timestring);
		}
		if ($utctime < time()) {
			// obviously the user didn't mean sometime before now
			$utctime += 24*60*60;
		}
		$db = Database::singleton();
		$query = "insert into ".Database::DBPREFIX."reminders set
			reminderdate='".addslashes(date('Y-m-d H:i:s',$utctime))."',
			message='".addslashes($message)."',
			fromaddress='".addslashes($this->from)."'
			";
		$db->query($query);
	}
}

?>