SLT::addLevelToDo PHP Method

    function addLevelToDo(Ticket $ticket, $slalevels_id = 0)
    {
        $slalevels_id = $slalevels_id ? $slalevels_id : $ticket->fields["ttr_slalevels_id"];
        if ($slalevels_id > 0) {
            $toadd = array();
            $date = $this->computeExecutionDate($ticket->fields['date'], $slalevels_id, $ticket->fields['sla_waiting_duration']);
            if ($date != null) {
                $toadd['date'] = $date;
                $toadd['slalevels_id'] = $slalevels_id;
                $toadd['tickets_id'] = $ticket->fields["id"];
                $slalevelticket = new SlaLevel_Ticket();
                $slalevelticket->add($toadd);
            }
        }
    }

 function pre_updateInDB()
 {
     // get again object to reload actors
     $this->loadActors();
     // Setting a solution or solution type means the problem is solved
     if (in_array("solutiontypes_id", $this->updates) && $this->input["solutiontypes_id"] > 0 || in_array("solution", $this->updates) && !empty($this->input["solution"])) {
         if (!in_array('status', $this->updates)) {
             $this->oldvalues['status'] = $this->fields['status'];
             $this->updates[] = 'status';
         }
         // Special case for Ticket : use autoclose
         if ($this->getType() == 'Ticket') {
             $autoclosedelay = Entity::getUsedConfig('autoclose_delay', $this->getEntityID(), '', Entity::CONFIG_NEVER);
             // 0 = immediatly
             if ($autoclosedelay == 0) {
                 $this->fields['status'] = self::CLOSED;
                 $this->input['status'] = self::CLOSED;
             } else {
                 $this->fields['status'] = self::SOLVED;
                 $this->input['status'] = self::SOLVED;
             }
         } else {
             $this->fields['status'] = self::SOLVED;
             $this->input['status'] = self::SOLVED;
         }
     }
     // Check dates change interval due to the fact that second are not displayed in form
     if (($key = array_search('date', $this->updates)) !== false && substr($this->fields["date"], 0, 16) == substr($this->oldvalues['date'], 0, 16)) {
         unset($this->updates[$key]);
         unset($this->oldvalues['date']);
     }
     if (($key = array_search('closedate', $this->updates)) !== false && substr($this->fields["closedate"], 0, 16) == substr($this->oldvalues['closedate'], 0, 16)) {
         unset($this->updates[$key]);
         unset($this->oldvalues['closedate']);
     }
     if (($key = array_search('due_date', $this->updates)) !== false && substr($this->fields["due_date"], 0, 16) == substr($this->oldvalues['due_date'], 0, 16)) {
         unset($this->updates[$key]);
         unset($this->oldvalues['due_date']);
     }
     if (($key = array_search('solvedate', $this->updates)) !== false && substr($this->fields["solvedate"], 0, 16) == substr($this->oldvalues['solvedate'], 0, 16)) {
         unset($this->updates[$key]);
         unset($this->oldvalues['solvedate']);
     }
     if (isset($this->input["status"])) {
         if ($this->input["status"] != self::WAITING && $this->countSuppliers(CommonITILActor::ASSIGN) == 0 && $this->countUsers(CommonITILActor::ASSIGN) == 0 && $this->countGroups(CommonITILActor::ASSIGN) == 0 && !in_array($this->fields['status'], array_merge($this->getSolvedStatusArray(), $this->getClosedStatusArray()))) {
             if (!in_array('status', $this->updates)) {
                 $this->oldvalues['status'] = $this->fields['status'];
                 $this->updates[] = 'status';
             }
             // $this->fields['status'] = self::INCOMING;
             // Don't change status if it's a new status allow
             if (in_array($this->oldvalues['status'], $this->getNewStatusArray()) && !in_array($this->input['status'], $this->getNewStatusArray())) {
                 $this->fields['status'] = $this->oldvalues['status'];
             }
         }
         if (in_array("status", $this->updates) && in_array($this->input["status"], $this->getSolvedStatusArray())) {
             $this->updates[] = "solvedate";
             $this->oldvalues['solvedate'] = $this->fields["solvedate"];
             $this->fields["solvedate"] = $_SESSION["glpi_currenttime"];
             // If invalid date : set open date
             if ($this->fields["solvedate"] < $this->fields["date"]) {
                 $this->fields["solvedate"] = $this->fields["date"];
             }
         }
         if (in_array("status", $this->updates) && in_array($this->input["status"], $this->getClosedStatusArray())) {
             $this->updates[] = "closedate";
             $this->oldvalues['closedate'] = $this->fields["closedate"];
             $this->fields["closedate"] = $_SESSION["glpi_currenttime"];
             // If invalid date : set open date
             if ($this->fields["closedate"] < $this->fields["date"]) {
                 $this->fields["closedate"] = $this->fields["date"];
             }
             // Set solvedate to closedate
             if (empty($this->fields["solvedate"])) {
                 $this->updates[] = "solvedate";
                 $this->oldvalues['solvedate'] = $this->fields["solvedate"];
                 $this->fields["solvedate"] = $this->fields["closedate"];
             }
         }
     }
     // check dates
     // check due_date (SLA)
     if ((in_array("date", $this->updates) || in_array("due_date", $this->updates)) && !is_null($this->fields["due_date"])) {
         // Date set
         if ($this->fields["due_date"] < $this->fields["date"]) {
             Session::addMessageAfterRedirect(__('Invalid dates. Update cancelled.'), false, ERROR);
             if (($key = array_search('date', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['date']);
             }
             if (($key = array_search('due_date', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['due_date']);
             }
         }
     }
     // Status close : check dates
     if (in_array($this->fields["status"], $this->getClosedStatusArray()) && (in_array("date", $this->updates) || in_array("closedate", $this->updates))) {
         // Invalid dates : no change
         // closedate must be > solvedate
         if ($this->fields["closedate"] < $this->fields["solvedate"]) {
             Session::addMessageAfterRedirect(__('Invalid dates. Update cancelled.'), false, ERROR);
             if (($key = array_search('closedate', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['closedate']);
             }
         }
         // closedate must be > create date
         if ($this->fields["closedate"] < $this->fields["date"]) {
             Session::addMessageAfterRedirect(__('Invalid dates. Update cancelled.'), false, ERROR);
             if (($key = array_search('date', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['date']);
             }
             if (($key = array_search('closedate', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['closedate']);
             }
         }
     }
     if (($key = array_search('status', $this->updates)) !== false && $this->oldvalues['status'] == $this->fields['status']) {
         unset($this->updates[$key]);
         unset($this->oldvalues['status']);
     }
     // Status solved : check dates
     if (in_array($this->fields["status"], $this->getSolvedStatusArray()) && (in_array("date", $this->updates) || in_array("solvedate", $this->updates))) {
         // Invalid dates : no change
         // solvedate must be > create date
         if ($this->fields["solvedate"] < $this->fields["date"]) {
             Session::addMessageAfterRedirect(__('Invalid dates. Update cancelled.'), false, ERROR);
             if (($key = array_search('date', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['date']);
             }
             if (($key = array_search('solvedate', $this->updates)) !== false) {
                 unset($this->updates[$key]);
                 unset($this->oldvalues['solvedate']);
             }
         }
     }
     // Manage come back to waiting state
     if (!is_null($this->fields['begin_waiting_date']) && ($key = array_search('status', $this->updates)) !== false && ($this->oldvalues['status'] == self::WAITING || in_array($this->oldvalues["status"], $this->getSolvedStatusArray()) && !in_array($this->fields["status"], $this->getClosedStatusArray()))) {
         // Compute ticket waiting time use calendar if exists
         $calendar = new Calendar();
         $calendars_id = $this->getCalendar();
         $delay_time = 0;
         // Compute ticket waiting time use calendar if exists
         // Using calendar
         if ($calendars_id > 0 && $calendar->getFromDB($calendars_id)) {
             $delay_time = $calendar->getActiveTimeBetween($this->fields['begin_waiting_date'], $_SESSION["glpi_currenttime"]);
         } else {
             // Not calendar defined
             $delay_time = strtotime($_SESSION["glpi_currenttime"]) - strtotime($this->fields['begin_waiting_date']);
         }
         // SLT case : compute slt_ttr duration
         if (isset($this->fields['slts_ttr_id']) && $this->fields['slts_ttr_id'] > 0) {
             $slt = new SLT();
             if ($slt->getFromDB($this->fields['slts_ttr_id'])) {
                 $slt->setTicketCalendar($calendars_id);
                 $delay_time_sla = $slt->getActiveTimeBetween($this->fields['begin_waiting_date'], $_SESSION["glpi_currenttime"]);
                 $this->updates[] = "sla_waiting_duration";
                 $this->fields["sla_waiting_duration"] += $delay_time_sla;
             }
             // Compute new due date
             $this->updates[] = "due_date";
             $this->fields['due_date'] = $slt->computeDate($this->fields['date'], $this->fields["sla_waiting_duration"]);
             // Add current level to do
             $slt->addLevelToDo($this);
         } else {
             // Using calendar
             if ($calendars_id > 0 && $calendar->getFromDB($calendars_id)) {
                 if ($this->fields['due_date'] > 0) {
                     // compute new due date using calendar
                     $this->updates[] = "due_date";
                     $this->fields['due_date'] = $calendar->computeEndDate($this->fields['due_date'], $delay_time);
                 }
             } else {
                 // Not calendar defined
                 if ($this->fields['due_date'] > 0) {
                     // compute new due date : no calendar so add computed delay_time
                     $this->updates[] = "due_date";
                     $this->fields['due_date'] = date('Y-m-d H:i:s', $delay_time + strtotime($this->fields['due_date']));
                 }
             }
         }
         $this->updates[] = "waiting_duration";
         $this->fields["waiting_duration"] += $delay_time;
         // Reset begin_waiting_date
         $this->updates[] = "begin_waiting_date";
         $this->fields["begin_waiting_date"] = 'NULL';
     }
     // Set begin waiting date if needed
     if (($key = array_search('status', $this->updates)) !== false && ($this->fields['status'] == self::WAITING || in_array($this->fields["status"], $this->getSolvedStatusArray()))) {
         $this->updates[] = "begin_waiting_date";
         $this->fields["begin_waiting_date"] = $_SESSION["glpi_currenttime"];
         // Specific for tickets
         if (isset($this->fields['slts_ttr_id']) && $this->fields['slts_ttr_id'] > 0) {
             SLT::deleteLevelsToDo($this);
         }
     }
     // solve_delay_stat : use delay between opendate and solvedate
     if (in_array("solvedate", $this->updates)) {
         $this->updates[] = "solve_delay_stat";
         $this->fields['solve_delay_stat'] = $this->computeSolveDelayStat();
     }
     // close_delay_stat : use delay between opendate and closedate
     if (in_array("closedate", $this->updates)) {
         $this->updates[] = "close_delay_stat";
         $this->fields['close_delay_stat'] = $this->computeCloseDelayStat();
     }
     // Do not take into account date_mod if no update is done
     if (count($this->updates) == 1 && ($key = array_search('date_mod', $this->updates)) !== false) {
         unset($this->updates[$key]);
     }
 }