class.ilSessionAppointment.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once('./Services/Calendar/interfaces/interface.ilDatePeriod.php');
include_once('./Services/Calendar/classes/class.ilDate.php');
class ilSessionAppointment implements ilDatePeriod
{
    public $ilErr;
    public $ilDB;
    public $tree;
    public $lng;

    protected $start = null;
    protected $end = null;

    public $starting_time = null;
    public $ending_time = null;

    public function __construct($a_appointment_id = null)
    {
        global $ilErr,$ilDB,$lng,$tree;

        $this->ilErr = $ilErr;
        $this->db  = $ilDB;
        $this->lng = $lng;

        $this->appointment_id = $a_appointment_id;
        $this->__read();
    }
    
    public static function _lookupAppointment($a_obj_id)
    {
        global $ilDB;
        
        $query = "SELECT * FROM event_appointment " .
            "WHERE event_id = " . $ilDB->quote($a_obj_id, 'integer') . " ";
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $info['fullday'] = $row->fulltime;
            
            $date = new ilDateTime($row->e_start, IL_CAL_DATETIME, 'UTC');
            $info['start'] =  $date->getUnixTime();
            $date = new ilDateTime($row->e_end, IL_CAL_DATETIME, 'UTC');
            $info['end'] = $date->getUnixTime();
            
            return $info;
        }
        return array();
    }
    
    public static function lookupNextSessionByCourse($a_ref_id)
    {
        global $tree,$ilDB;
        
        
        $sessions = $tree->getChildsByType($a_ref_id, 'sess');
        $obj_ids = array();
        foreach ($sessions as $tree_data) {
            $obj_ids[] = $tree_data['obj_id'];
        }
        if (!count($obj_ids)) {
            return false;
        }

        // Try to read the next sessions within the next 24 hours
        $now = new ilDate(time(), IL_CAL_UNIX);
        $tomorrow = clone $now;
        $tomorrow->increment(IL_CAL_DAY, 2);
        
        $query = "SELECT event_id FROM event_appointment " .
            "WHERE e_start > " . $ilDB->quote($now->get(IL_CAL_DATE, 'timestamp')) . ' ' .
            "AND e_start < " . $ilDB->quote($tomorrow->get(IL_CAL_DATE, 'timestamp')) . ' ' .
            "AND " . $ilDB->in('event_id', $obj_ids, false, 'integer') . ' ' .
            "ORDER BY e_start ";
            
        $event_ids = array();
            
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $event_ids[] = $row->event_id;
        }
        
        if (count($event_ids)) {
            return $event_ids;
        }
        
        // Alternativ: get next event.
        $query = "SELECT event_id FROM event_appointment " .
            "WHERE e_start > " . $ilDB->now() . " " .
            "AND " . $ilDB->in('event_id', $obj_ids, false, 'integer') . " " .
            "ORDER BY e_start ";
        $ilDB->setLimit(1);
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $event_id = $row->event_id;
        }
        return isset($event_id) ? array($event_id) : array();
    }
    
    public static function lookupLastSessionByCourse($a_ref_id)
    {
        global $tree,$ilDB;
        
        $sessions = $tree->getChildsByType($a_ref_id, 'sess');
        $obj_ids = array();
        foreach ($sessions as $tree_data) {
            $obj_ids[] = $tree_data['obj_id'];
        }
        if (!count($obj_ids)) {
            return false;
        }
        $query = "SELECT event_id FROM event_appointment " .
            "WHERE e_start < " . $ilDB->now() . " " .
            "AND " . $ilDB->in('event_id', $obj_ids, false, 'integer') . " " .
            "ORDER BY e_start DESC ";
        $ilDB->setLimit(1);
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $event_id = $row->event_id;
        }
        return isset($event_id) ? $event_id : 0;
    }

    // Interface methods
    public function isFullday()
    {
        return $this->enabledFullTime();
    }
    
    public function getStart()
    {
        return $this->start ? $this->start : $this->start = new ilDateTime(date('Y-m-d') . ' 08:00:00', IL_CAL_DATETIME);
    }
    
    public function setStart($a_start)
    {
        $this->start = $a_start;
    }
    
    public function getEnd()
    {
        return $this->end ? $this->end : $this->end = new ilDateTime(date('Y-m-d') . ' 16:00:00', IL_CAL_DATETIME);
    }
    
    public function setEnd($a_end)
    {
        $this->end = $a_end;
    }

    public function setAppointmentId($a_appointment_id)
    {
        $this->appointment_id = $a_appointment_id;
    }
    public function getAppointmentId()
    {
        return $this->appointment_id;
    }

    public function setSessionId($a_session_id)
    {
        $this->session_id = $a_session_id;
    }
    public function getSessionId()
    {
        return $this->session_id;
    }

    public function setStartingTime($a_starting_time)
    {
        $this->starting_time = $a_starting_time;
        $this->start = new ilDateTime($this->starting_time, IL_CAL_UNIX);
    }
    public function getStartingTime()
    {
        return isset($this->starting_time) ? $this->starting_time : mktime(8, 0, 0, date('n', time()), date('d', time()), date('Y', time()));
    }
    
    public function setEndingTime($a_ending_time)
    {
        $this->ending_time = $a_ending_time;
        $this->end = new ilDateTime($this->ending_time, IL_CAL_UNIX);
    }
    public function getEndingTime()
    {
        return isset($this->ending_time) ? $this->ending_time : mktime(16, 0, 0, date('n', time()), date('d', time()), date('Y', time()));
    }

    public function toggleFullTime($a_status)
    {
        $this->fulltime = $a_status;
    }
    public function enabledFullTime()
    {
        return $this->fulltime;
    }

    public function formatTime()
    {
        return ilSessionAppointment::_timeToString($this->getStartingTime(), $this->getEndingTime());
    }

    public function _timeToString($start, $end)
    {
        global $ilUser,$lng;

        $start = date($this->lng->txt('lang_timeformat_no_sec'), $start);
        $end = date($this->lng->txt('lang_timeformat_no_sec'), $end);
        
        return $start . ' - ' . $end;
    }

    public static function _appointmentToString($start, $end, $fulltime)
    {
        global $lng;

        if ($fulltime) {
            return ilDatePresentation::formatPeriod(
                new ilDate($start, IL_CAL_UNIX),
                #new ilDate($end,IL_CAL_UNIX)).' ('.$lng->txt('event_full_time_info').')';
                new ilDate($end, IL_CAL_UNIX)
            );
        } else {
            return ilDatePresentation::formatPeriod(
                new ilDateTime($start, IL_CAL_UNIX),
                new ilDateTime($end, IL_CAL_UNIX)
            );
        }
    }

    public function appointmentToString()
    {
        return ilSessionAppointment::_appointmentToString($this->getStartingTime(), $this->getEndingTime(), $this->enabledFullTime());
    }
    
    public function cloneObject($new_id)
    {
        $new_app = new ilSessionAppointment();
        $new_app->setSessionId($new_id);
        $new_app->setStartingTime($this->getStartingTime());
        $new_app->setEndingTime($this->getEndingTime());
        $new_app->toggleFullTime($this->isFullday());
        $new_app->create();
        return $new_app;
    }

    public function create()
    {
        global $ilDB;
        
        if (!$this->getSessionId()) {
            return false;
        }
        $next_id = $ilDB->nextId('event_appointment');
        $query = "INSERT INTO event_appointment (appointment_id,event_id,e_start,e_end,fulltime) " .
            "VALUES( " .
            $ilDB->quote($next_id, 'integer') . ", " .
            $ilDB->quote($this->getSessionId(), 'integer') . ", " .
            $ilDB->quote($this->getStart()->get(IL_CAL_DATETIME, '', 'UTC'), 'timestamp') . ", " .
            $ilDB->quote($this->getEnd()->get(IL_CAL_DATETIME, '', 'UTC'), 'timestamp') . ", " .
            $ilDB->quote($this->enabledFullTime(), 'integer') . " " .
            ")";
        $this->appointment_id = $next_id;
        $res = $ilDB->manipulate($query);
        
        return true;
    }

    public function update()
    {
        global $ilDB;
        
        if (!$this->getSessionId()) {
            return false;
        }
        $query = "UPDATE event_appointment " .
            "SET event_id = " . $ilDB->quote($this->getSessionId(), 'integer') . ", " .
            "e_start = " . $ilDB->quote($this->getStart()->get(IL_CAL_DATETIME, '', 'UTC'), 'timestamp') . ", " .
            "e_end = " . $ilDB->quote($this->getEnd()->get(IL_CAL_DATETIME, '', 'UTC'), 'timestamp') . ", " .
            "fulltime = " . $ilDB->quote($this->enabledFullTime(), 'integer') . " " .
            "WHERE appointment_id = " . $ilDB->quote($this->getAppointmentId(), 'integer') . " ";
        $res = $ilDB->manipulate($query);
        return true;
    }

    public function delete()
    {
        return ilSessionAppointment::_delete($this->getAppointmentId());
    }

    public static function _delete($a_appointment_id)
    {
        global $ilDB;

        $query = "DELETE FROM event_appointment " .
            "WHERE appointment_id = " . $ilDB->quote($a_appointment_id, 'integer') . " ";
        $res = $ilDB->manipulate($query);

        return true;
    }

    public static function _deleteBySession($a_event_id)
    {
        global $ilDB;

        $query = "DELETE FROM event_appointment " .
            "WHERE event_id = " . $ilDB->quote($a_event_id, 'integer') . " ";
        $res = $ilDB->manipulate($query);

        return true;
    }

    public static function _readAppointmentsBySession($a_event_id)
    {
        global $ilDB;

        $query = "SELECT * FROM event_appointment " .
            "WHERE event_id = " . $ilDB->quote($a_event_id, 'integer') . " " .
            "ORDER BY starting_time";

        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $appointments[] = new ilSessionAppointment($row->appointment_id);
        }
        return is_array($appointments) ? $appointments : array();
    }
            
    public function validate()
    {
        if ($this->starting_time > $this->ending_time) {
            $this->ilErr->appendMessage($this->lng->txt('event_etime_smaller_stime'));
            return false;
        }
        return true;
    }

    // PRIVATE
    public function __read()
    {
        global $ilDB;
        
        if (!$this->getAppointmentId()) {
            return null;
        }

        $query = "SELECT * FROM event_appointment " .
            "WHERE appointment_id = " . $ilDB->quote($this->getAppointmentId(), 'integer') . " ";
        $res = $this->db->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $this->setSessionId($row->event_id);
            $this->toggleFullTime($row->fulltime);
            
            if ($this->isFullday()) {
                $this->start = new ilDate($row->e_start, IL_CAL_DATETIME);
                $this->end = new ilDate($row->e_end, IL_CAL_DATETIME);
            } else {
                $this->start = new ilDateTime($row->e_start, IL_CAL_DATETIME, 'UTC');
                $this->end = new ilDateTime($row->e_end, IL_CAL_DATETIME, 'UTC');
            }
            $this->starting_time = $this->start->getUnixTime();
            $this->ending_time = $this->end->getUnixTime();
        }
        return true;
    }
}