dsd-meetme / backend

app/Console/Commands/Optimise/Optimise.php

Doc Comments +7 added lines, -6 removed lines

@@ -291,11 +291,11 @@ 
 
     /**
      * @param \Illuminate\Support\Collection $timeSlots
-     * @param bool|true $free if true the array is filled with 1 for timeslots values else with 0 for timeslots values
-     * @param array $ids array of ids that we consider, if they are not present inside timeSlots we fill the entire row
+     * @param boolean $free if true the array is filled with 1 for timeslots values else with 0 for timeslots values
+     * @param string[] $ids array of ids that we consider, if they are not present inside timeSlots we fill the entire row
      *      with the default value
      * @param int $timeSlotsN number of timeslots
-     * @return array
+     * @return string[]
      */
     static private function getAvailabilityArray(\Illuminate\Support\Collection $timeSlots, $timeSlotsN, array $ids, $free = true)
     {
@@ -344,6 +344,7 @@ 
      * @param array $array
      * @param int $id
      * @param string $fill
+     * @param integer $until
      * @return array
      */
     static private function fillRow(array $array, $id, $until, $fill = '0')
@@ -396,10 +397,10 @@ 
     }
 
     /**
-     * @param array $users
-     * @param array $meetings
+     * @param string[] $users
+     * @param string[] $meetings
      * @param \Illuminate\Support\Collection $usersMeetings
-     * @return array
+     * @return string[]
      */
     static private function getUsersMeetingsArray($users, $meetings, \Illuminate\Support\Collection $usersMeetings)
     {

Spacing +31 added lines, -31 removed lines

@@ -85,8 +85,8 @@ 
     {
         $this->startTime = clone $startTime;
         $this->endTime = clone $this->startTime;
-        $this->endTime->add(new \DateInterval('PT' . ($this->time_slots *
-                config('app.timeslots.duration')) . 'S'));
+        $this->endTime->add(new \DateInterval('PT'.($this->time_slots *
+                config('app.timeslots.duration')).'S'));
     }
 
     /**
@@ -158,11 +158,11 @@ 
             $solver = $this->setData($solver);
             $solver = $solver->solve();
             $this->solver = $solver;
-        }catch(OptimiseException $e) {
-            if(!$e->isEmpty())
+        } catch (OptimiseException $e) {
+            if (!$e->isEmpty())
                 \Event::fire(new ErrorEvent($this->company, $e->getMessage()));
             throw $e;
-        }catch (\Exception $e) {
+        } catch (\Exception $e) {
             //TODO use the correct exceptions to avoid to share private data
             \Event::fire(new ErrorEvent($this->company, $e->getMessage()));
             throw new OptimiseException('Optimising error', 0, $e);
@@ -207,7 +207,7 @@ 
     {
         //since we consider busy timeslots, we need to get all users
         $users = $this->company->employees->pluck('id')->toArray();
-        if(count($users) == 0)
+        if (count($users) == 0)
             throw ((new OptimiseException("No users for this company"))->withEmpty(true));
         return $solver->setUsers($users);
     }
@@ -223,9 +223,9 @@ 
          * @var $meetings \Illuminate\Support\Collection
          */
         $meetings = collect($this->company->getMeetingsTimeSlots($this->startTime, $this->endTime));
-        if($meetings->count() == 0)
+        if ($meetings->count() == 0)
             throw ((new OptimiseException("No meetings for this week"))->withEmpty(true));
-        $timeslots = $meetings->groupBy('id')->map(function ($item) { //convert timeslots
+        $timeslots = $meetings->groupBy('id')->map(function($item) { //convert timeslots
             return $this->durationConverter($this->timeSlotsConverter($item));
         });
         return $solver->setMeetings($timeslots->keys()->toArray())
@@ -240,8 +240,8 @@ 
      */
     private function durationConverter($item)
     {
-        return $item->each(function ($item2) {
-            $item2->duration = $this->convertDuration((int)$item2->duration);
+        return $item->each(function($item2) {
+            $item2->duration = $this->convertDuration((int) $item2->duration);
             return $item2;
             //TODO try catch
         });
@@ -253,7 +253,7 @@ 
      */
     static private function convertDuration($duration)
     {
-        return (int)ceil($duration / config('app.timeslots.duration'));
+        return (int) ceil($duration / config('app.timeslots.duration'));
     }
 
     /**
@@ -262,7 +262,7 @@ 
      */
     private function timeSlotsConverter($item)
     {
-        return $item->each(function ($item2) {
+        return $item->each(function($item2) {
             $item2->time_start = $this->toTimeSlot($item2->time_start);
             $item2->time_end = $this->toTimeSlot($item2->time_end);
             return $item2;
@@ -280,13 +280,13 @@ 
         $dateTime = new \DateTime($time);
         $diff = $dateTime->diff($this->startTime);
         $diff = explode(':', $diff->format('%R:%d:%h:%i:%s'));
-        $diff = $diff[1] * 86400 + $diff[2] * 3600 + $diff[3] * 60 + $diff[4];
+        $diff = $diff[ 1 ] * 86400 + $diff[ 2 ] * 3600 + $diff[ 3 ] * 60 + $diff[ 4 ];
         //if($diff[0] != '-' && $diff != 0)
         //  throw new OptimiseException('timeslot time <= startTime');
         //TODO fix check
         //TODO check if diff makes sense
         //TODO check upper limit
-        return (int)(round($diff / config('app.timeslots.duration')) + 1); //TODO can round cause overlaps?
+        return (int) (round($diff / config('app.timeslots.duration')) + 1); //TODO can round cause overlaps?
     }
 
     /**
@@ -299,10 +299,10 @@ 
      */
     static private function getAvailabilityArray(\Illuminate\Support\Collection $timeSlots, $timeSlotsN, array $ids, $free = true)
     {
-        $ret = [];
+        $ret = [ ];
         foreach ($ids as $id) {
-            if(isset($timeSlots[$id]))
-                $ret = self::fillTimeSlots($ret, $id, $timeSlots[$id], $free ? '1' : '0');
+            if (isset($timeSlots[ $id ]))
+                $ret = self::fillTimeSlots($ret, $id, $timeSlots[ $id ], $free ? '1' : '0');
             $ret = self::fillRow($ret, $id, $timeSlotsN, $free ? '0' : '1');
         }
 
@@ -319,9 +319,9 @@ 
     static private function fillTimeSlots(array $array, $id, \Illuminate\Support\Collection $timeSlots, $fill = '0')
     {
         foreach ($timeSlots as $timeSlot) {
-            if (!isset($array[$id]))
-                $array[$id] = [];
-            $array[$id] = self::arrayPadInterval($array[$id], $timeSlot->time_start, $timeSlot->time_end, $fill);
+            if (!isset($array[ $id ]))
+                $array[ $id ] = [ ];
+            $array[ $id ] = self::arrayPadInterval($array[ $id ], $timeSlot->time_start, $timeSlot->time_end, $fill);
         }
         return $array;
     }
@@ -336,7 +336,7 @@ 
     static private function arrayPadInterval(array $array, $from, $to, $pad = '0')
     {
         for ($i = $from; $i < $to; $i++)
-            $array[$i] = $pad;
+            $array[ $i ] = $pad;
         return $array;
     }
 
@@ -349,8 +349,8 @@ 
     static private function fillRow(array $array, $id, $until, $fill = '0')
     {
         for ($i = 1; $i <= $until; $i++) {
-            if (!isset($array[$id][$i]))
-                $array[$id][$i] = $fill;
+            if (!isset($array[ $id ][ $i ]))
+                $array[ $id ][ $i ] = $fill;
         }
 
         return $array;
@@ -369,7 +369,7 @@ 
         $users = collect($this->company->getEmployeesTimeSlots($this->startTime, $this->endTime));
         //if($users->count() == 0)
         //    throw ((new OptimiseException("No users for this company"))->withEmpty(true));
-        $timeslots = $users->groupBy('id')->map(function ($item) { //convert timeslots
+        $timeslots = $users->groupBy('id')->map(function($item) { //convert timeslots
             return $this->timeSlotsConverter($item);
         });
         return $solver->setUsersAvailability(self::getAvailabilityArray($timeslots, $this->time_slots, $solver->getUsers(),
@@ -389,7 +389,7 @@ 
          * @var $usersMeetings \Illuminate\Support\Collection
          */
         $usersMeetings = collect($this->company->getUsersMeetings($users, $meetings))->groupBy('employee_id');
-        if($usersMeetings->count() == 0)
+        if ($usersMeetings->count() == 0)
             throw ((new OptimiseException("No users for any meeting"))->withEmpty(true));
 
         return $solver->setUsersMeetings(self::getUsersMeetingsArray($users, $meetings, $usersMeetings));
@@ -403,14 +403,14 @@ 
      */
     static private function getUsersMeetingsArray($users, $meetings, \Illuminate\Support\Collection $usersMeetings)
     {
-        $ret = [];
+        $ret = [ ];
         foreach ($users as $user) {
             $usersMeetingsTmp = $usersMeetings->get($user);
             foreach ($meetings as $meeting) {
                 if ($usersMeetingsTmp != null && $usersMeetingsTmp->contains('meeting_id', $meeting)) {
-                    $ret[$user][$meeting] = 1;
+                    $ret[ $user ][ $meeting ] = 1;
                 } else {
-                    $ret[$user][$meeting] = 0;
+                    $ret[ $user ][ $meeting ] = 0;
                 }
             }
         }
@@ -453,7 +453,7 @@ 
     {
         $meetings = $solver->getYResults();
         foreach ($meetings as $id => $meeting) {
-            $meetingO = \plunner\Meeting::findOrFail($id);//TODO catch error
+            $meetingO = \plunner\Meeting::findOrFail($id); //TODO catch error
             $meetingO->start_time = $this->toDateTime(array_search('1', $meeting));
             $meetingO->save();
         }
@@ -469,7 +469,7 @@ 
         //TODO check, because the meetings cannot have this date available -> this to avoid errors if we don't have a date for a meeting
         if ($timeslot <= 1) //false == 0
             return $ret;
-        return $ret->add(new \DateInterval('PT' . (($timeslot - 1) * config('app.timeslots.duration')) . 'S'));
+        return $ret->add(new \DateInterval('PT'.(($timeslot - 1) * config('app.timeslots.duration')).'S'));
     }
 
     /**
@@ -481,7 +481,7 @@ 
         foreach ($employeesMeetings as $eId => $employeeMeetings) {
             $employee = \plunner\Employee::findOrFail($eId);
             $employeeMeetings = collect($employeeMeetings);
-            $employeeMeetings = $employeeMeetings->filter(function ($item) {
+            $employeeMeetings = $employeeMeetings->filter(function($item) {
                 return $item == 1;
             });
             $employee->meetings()->attach($employeeMeetings->keys()->toArray());

app/Console/Commands/Optimise/Solver.php

Spacing +25 added lines, -25 removed lines

@@ -194,7 +194,7 @@ 
     public function setTimeSlots($timeSlots)
     {
         if (!is_int($timeSlots) || $timeSlots <= 0)
-            throw new OptimiseException($timeSlots . ' is not integer or it is not >0');
+            throw new OptimiseException($timeSlots.' is not integer or it is not >0');
 
         $this->timeSlots = $timeSlots;
         return $this;
@@ -216,7 +216,7 @@ 
     public function setMaxTimeSlots($maxTimeSlots)
     {
         if (!is_int($maxTimeSlots) || $maxTimeSlots <= 0)
-            throw new OptimiseException($maxTimeSlots . ' is not integer or it is not >0');
+            throw new OptimiseException($maxTimeSlots.' is not integer or it is not >0');
 
         $this->maxTimeSlots = $maxTimeSlots;
         return $this;
@@ -241,11 +241,11 @@ 
         if (array_diff($meetings, $this->meetings))
             throw new OptimiseException('meetings different from meetings set');
         foreach ($meetingsAvailability as $key => $meetingsAvailabilityS) {
-            $timeSlots = array_keys($meetingsAvailabilityS);//TODO this is useless, we can use directly $usersAvailabilityS
+            $timeSlots = array_keys($meetingsAvailabilityS); //TODO this is useless, we can use directly $usersAvailabilityS
             //TODO check if keys are sequential and the last is the same with $this->timeSlots
             if (count($timeSlots) != $this->timeSlots)
                 throw new OptimiseException('timeSlots different from timeSlots set');
-            $meetingsAvailability[$key] = self::arrayPad($meetingsAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
+            $meetingsAvailability[ $key ] = self::arrayPad($meetingsAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
         }
 
         $this->meetingsAvailability = $meetingsAvailability;
@@ -262,7 +262,7 @@ 
     {
         $len = $len - count($array);
         for ($i = 0; $i < $len; $i++)
-            $array[] = $pad;
+            $array[ ] = $pad;
         return $array;
     }
 
@@ -286,7 +286,7 @@ 
             throw new OptimiseException('meetings different from meetings set');
         }
         foreach ($meetingsDuration as $duration) {
-            $duration = (int)$duration; //TODO fix this (fix for optimise)
+            $duration = (int) $duration; //TODO fix this (fix for optimise)
             if (!is_int($duration) || $duration <= 0)
                 throw new OptimiseException('duration is not integer or it is not >0');
         }
@@ -314,11 +314,11 @@ 
         if (array_diff($users, $this->users))
             throw new OptimiseException('users different from users set');
         foreach ($usersAvailability as $key => $usersAvailabilityS) {
-            $timeSlots = array_keys($usersAvailabilityS);//TODO this is useless, we can use directly $usersAvailabilityS
+            $timeSlots = array_keys($usersAvailabilityS); //TODO this is useless, we can use directly $usersAvailabilityS
             if (count($timeSlots) != $this->timeSlots)
                 throw new OptimiseException('timeSlots different from timeSlots set');
 
-            $usersAvailability[$key] = self::arrayPad($usersAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
+            $usersAvailability[ $key ] = self::arrayPad($usersAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
         }
 
         $this->usersAvailability = $usersAvailability;
@@ -361,7 +361,7 @@ 
     {
         $this->writeData();
         $this->writeModelFile();
-        $event = $this->schedule->exec('glpsol --math ' . $this->path->getModelPath())->sendOutputTo($this->path->getOutputPath())->after(function () {
+        $event = $this->schedule->exec('glpsol --math '.$this->path->getModelPath())->sendOutputTo($this->path->getOutputPath())->after(function() {
         }); //this just to execute in foreground
         if ($event->isDue($this->laravel))
             $event->run($this->laravel);
@@ -388,8 +388,8 @@ 
      */
     private function checkData()
     {
-        $this->checkArrayProprieties(['users', 'meetings', 'meetingsAvailability', 'meetingsDuration', 'usersAvailability', 'usersMeetings']);
-        $this->checkIntProprieties(['timeSlots', 'maxTimeSlots']);
+        $this->checkArrayProprieties([ 'users', 'meetings', 'meetingsAvailability', 'meetingsDuration', 'usersAvailability', 'usersMeetings' ]);
+        $this->checkIntProprieties([ 'timeSlots', 'maxTimeSlots' ]);
     }
 
     /**
@@ -400,7 +400,7 @@ 
     {
         foreach ($proprieties as $propriety)
             if (count($this->$propriety) == 0)
-                throw new OptimiseException($propriety . ' property is not set correctly');
+                throw new OptimiseException($propriety.' property is not set correctly');
     }
 
     /**
@@ -411,7 +411,7 @@ 
     {
         foreach ($proprieties as $propriety)
             if (!is_int($this->$propriety) || $this->$propriety <= 0)
-                throw new OptimiseException($propriety . ' property is not set correctly');
+                throw new OptimiseException($propriety.' property is not set correctly');
     }
 
     /**
@@ -429,13 +429,13 @@ 
      */
     static private function writeCSVArrayNoKey($file, $data)
     {
-        $f = function ($fp, $data) {
+        $f = function($fp, $data) {
             foreach ($data as $field) {
-                fputcsv($fp, [$field]);
+                fputcsv($fp, [ $field ]);
             }
         };
 
-        self::writeCSV($file, $data, ['i'], $f);
+        self::writeCSV($file, $data, [ 'i' ], $f);
     }
 
     /**
@@ -484,13 +484,13 @@ 
      */
     static private function writeCSVArray($file, $data, $name)
     {
-        $f = function ($fp, $data) {
+        $f = function($fp, $data) {
             foreach ($data as $key => $field) {
-                fputcsv($fp, [$key, $field]);
+                fputcsv($fp, [ $key, $field ]);
             }
         };
 
-        self::writeCSV($file, $data, ['i', $name], $f);
+        self::writeCSV($file, $data, [ 'i', $name ], $f);
     }
 
     /**
@@ -509,14 +509,14 @@ 
      */
     static private function writeCSVMatrix($file, $data, $name)
     {
-        $f = function ($fp, $data) {
+        $f = function($fp, $data) {
             foreach ($data as $key => $field) {
                 foreach ($field as $key2 => $field2)
-                    fputcsv($fp, [$key, $key2, $field2]);
+                    fputcsv($fp, [ $key, $key2, $field2 ]);
             }
         };
 
-        self::writeCSV($file, $data, ['i', 'j', $name], $f);
+        self::writeCSV($file, $data, [ 'i', 'j', $name ], $f);
     }
 
     /**
@@ -545,7 +545,7 @@ 
         $f = @fopen($this->path->getModelPath(), "w");
         if (!$f)
             throw new OptimiseException('problem during creation of a file');
-        fwrite($f, str_replace($strReplaceS, $strReplaceR, file_get_contents(__DIR__ . "/model.stub")));
+        fwrite($f, str_replace($strReplaceS, $strReplaceR, file_get_contents(__DIR__."/model.stub")));
         fclose($f);
     }
 
@@ -572,7 +572,7 @@ 
         if (!$handle)
             throw new OptimiseException('problems during reading the file');
 
-        $ret = [];
+        $ret = [ ];
         fgetcsv($handle); //skip head
         while (($data = fgetcsv($handle)) !== FALSE) {
             if (count($data) != 3) {
@@ -580,7 +580,7 @@ 
                 throw new OptimiseException('problems during parsing the file');
             }
 
-            $ret[$data[0]][$data[1]] = $data[2];
+            $ret[ $data[ 0 ] ][ $data[ 1 ] ] = $data[ 2 ];
         }
 
         fclose($handle);

Braces +60 added lines, -40 removed lines

@@ -104,8 +104,9 @@ 
      */
     static private function checkGlpsol()
     {
-        if (!(`which glpsol`))
-            throw new OptimiseException('glpsol is not installed');
+        if (!(`which glpsol`)) {
+                    throw new OptimiseException('glpsol is not installed');
+        }
     }
 
     /**
@@ -193,8 +194,9 @@ 
      */
     public function setTimeSlots($timeSlots)
     {
-        if (!is_int($timeSlots) || $timeSlots <= 0)
-            throw new OptimiseException($timeSlots . ' is not integer or it is not >0');
+        if (!is_int($timeSlots) || $timeSlots <= 0) {
+                    throw new OptimiseException($timeSlots . ' is not integer or it is not >0');
+        }
 
         $this->timeSlots = $timeSlots;
         return $this;
@@ -215,8 +217,9 @@ 
      */
     public function setMaxTimeSlots($maxTimeSlots)
     {
-        if (!is_int($maxTimeSlots) || $maxTimeSlots <= 0)
-            throw new OptimiseException($maxTimeSlots . ' is not integer or it is not >0');
+        if (!is_int($maxTimeSlots) || $maxTimeSlots <= 0) {
+                    throw new OptimiseException($maxTimeSlots . ' is not integer or it is not >0');
+        }
 
         $this->maxTimeSlots = $maxTimeSlots;
         return $this;
@@ -238,13 +241,15 @@ 
     public function setMeetingsAvailability($meetingsAvailability)
     {
         $meetings = array_keys($meetingsAvailability);
-        if (array_diff($meetings, $this->meetings))
-            throw new OptimiseException('meetings different from meetings set');
+        if (array_diff($meetings, $this->meetings)) {
+                    throw new OptimiseException('meetings different from meetings set');
+        }
         foreach ($meetingsAvailability as $key => $meetingsAvailabilityS) {
             $timeSlots = array_keys($meetingsAvailabilityS);//TODO this is useless, we can use directly $usersAvailabilityS
             //TODO check if keys are sequential and the last is the same with $this->timeSlots
-            if (count($timeSlots) != $this->timeSlots)
-                throw new OptimiseException('timeSlots different from timeSlots set');
+            if (count($timeSlots) != $this->timeSlots) {
+                            throw new OptimiseException('timeSlots different from timeSlots set');
+            }
             $meetingsAvailability[$key] = self::arrayPad($meetingsAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
         }
 
@@ -261,8 +266,9 @@ 
     static private function arrayPad(array $array, $len, $pad)
     {
         $len = $len - count($array);
-        for ($i = 0; $i < $len; $i++)
-            $array[] = $pad;
+        for ($i = 0; $i < $len; $i++) {
+                    $array[] = $pad;
+        }
         return $array;
     }
 
@@ -287,8 +293,9 @@ 
         }
         foreach ($meetingsDuration as $duration) {
             $duration = (int)$duration; //TODO fix this (fix for optimise)
-            if (!is_int($duration) || $duration <= 0)
-                throw new OptimiseException('duration is not integer or it is not >0');
+            if (!is_int($duration) || $duration <= 0) {
+                            throw new OptimiseException('duration is not integer or it is not >0');
+            }
         }
 
         $this->meetingsDuration = $meetingsDuration;
@@ -311,12 +318,14 @@ 
     public function setUsersAvailability($usersAvailability)
     {
         $users = array_keys($usersAvailability);
-        if (array_diff($users, $this->users))
-            throw new OptimiseException('users different from users set');
+        if (array_diff($users, $this->users)) {
+                    throw new OptimiseException('users different from users set');
+        }
         foreach ($usersAvailability as $key => $usersAvailabilityS) {
             $timeSlots = array_keys($usersAvailabilityS);//TODO this is useless, we can use directly $usersAvailabilityS
-            if (count($timeSlots) != $this->timeSlots)
-                throw new OptimiseException('timeSlots different from timeSlots set');
+            if (count($timeSlots) != $this->timeSlots) {
+                            throw new OptimiseException('timeSlots different from timeSlots set');
+            }
 
             $usersAvailability[$key] = self::arrayPad($usersAvailabilityS, $this->timeSlots + $this->maxTimeSlots, 0);
         }
@@ -341,12 +350,14 @@ 
     public function setUsersMeetings($usersMeetings)
     {
         $users = array_keys($usersMeetings);
-        if (array_diff($users, $this->users))
-            throw new OptimiseException('users different from users set');
+        if (array_diff($users, $this->users)) {
+                    throw new OptimiseException('users different from users set');
+        }
         foreach ($usersMeetings as $usersMeetingsS) {
             $meetings = array_keys($usersMeetingsS);
-            if (array_diff($meetings, $this->meetings))
-                throw new OptimiseException('meetings different from meetings set');
+            if (array_diff($meetings, $this->meetings)) {
+                            throw new OptimiseException('meetings different from meetings set');
+            }
         }
 
         $this->usersMeetings = $usersMeetings;
@@ -363,8 +374,9 @@ 
         $this->writeModelFile();
         $event = $this->schedule->exec('glpsol --math ' . $this->path->getModelPath())->sendOutputTo($this->path->getOutputPath())->after(function () {
         }); //this just to execute in foreground
-        if ($event->isDue($this->laravel))
-            $event->run($this->laravel);
+        if ($event->isDue($this->laravel)) {
+                    $event->run($this->laravel);
+        }
         //TODO catch glpsol errors
         return $this;
     }
@@ -398,9 +410,10 @@ 
      */
     private function checkArrayProprieties($proprieties)
     {
-        foreach ($proprieties as $propriety)
-            if (count($this->$propriety) == 0)
+        foreach ($proprieties as $propriety) {
+                    if (count($this->$propriety) == 0)
                 throw new OptimiseException($propriety . ' property is not set correctly');
+        }
     }
 
     /**
@@ -409,9 +422,10 @@ 
      */
     private function checkIntProprieties($proprieties)
     {
-        foreach ($proprieties as $propriety)
-            if (!is_int($this->$propriety) || $this->$propriety <= 0)
+        foreach ($proprieties as $propriety) {
+                    if (!is_int($this->$propriety) || $this->$propriety <= 0)
                 throw new OptimiseException($propriety . ' property is not set correctly');
+        }
     }
 
     /**
@@ -448,8 +462,9 @@ 
     static private function writeCSV($file, $data, $heading, \Closure $writer)
     {
         $fp = @fopen($file, 'w');
-        if (!$fp)
-            throw new OptimiseException('problem during creation of a file');
+        if (!$fp) {
+                    throw new OptimiseException('problem during creation of a file');
+        }
 
         fputcsv($fp, $heading);
 
@@ -511,8 +526,9 @@ 
     {
         $f = function ($fp, $data) {
             foreach ($data as $key => $field) {
-                foreach ($field as $key2 => $field2)
-                    fputcsv($fp, [$key, $key2, $field2]);
+                foreach ($field as $key2 => $field2) {
+                                    fputcsv($fp, [$key, $key2, $field2]);
+                }
             }
         };
 
@@ -543,8 +559,9 @@ 
         $strReplaceS = array('{USERS_PATH}', '{MEETINGS_PATH}', '{USER_AVAILABILITY_PATH}', '{MEETINGS_AVAILABILITY_PATH}', '{USER_MEETINGS_PATH}', '{MEETINGS_DURATION_PATH}', '{TIME_SLOTS}', '{MAX_TIME_SLOTS}', '{X_OUT_PATH}', '{Y_OUT_PATH}');
         $strReplaceR = array($this->path->getUsersPath(), $this->path->getMeetingsPath(), $this->path->getUsersAvailabilityPath(), $this->path->getMeetingsAvailabilityPath(), $this->path->getUsersMeetingsPath(), $this->path->getMeetingsDurationPath(), $this->timeSlots, $this->maxTimeSlots, $this->path->getXPath(), $this->path->getYPath());
         $f = @fopen($this->path->getModelPath(), "w");
-        if (!$f)
-            throw new OptimiseException('problem during creation of a file');
+        if (!$f) {
+                    throw new OptimiseException('problem during creation of a file');
+        }
         fwrite($f, str_replace($strReplaceS, $strReplaceR, file_get_contents(__DIR__ . "/model.stub")));
         fclose($f);
     }
@@ -565,12 +582,14 @@ 
      */
     static private function readCSVFile($file)
     {
-        if (!file_exists($file) || !filesize($file))
-            throw new OptimiseException('no results file');
+        if (!file_exists($file) || !filesize($file)) {
+                    throw new OptimiseException('no results file');
+        }
 
         $handle = @fopen($file, "r");
-        if (!$handle)
-            throw new OptimiseException('problems during reading the file');
+        if (!$handle) {
+                    throw new OptimiseException('problems during reading the file');
+        }
 
         $ret = [];
         fgetcsv($handle); //skip head
@@ -603,8 +622,9 @@ 
      */
     public function getOutput()
     {
-        if (!($data = file_get_contents($this->path->getOutputPath())))
-            throw new OptimiseException('problems during reading the file');
+        if (!($data = file_get_contents($this->path->getOutputPath()))) {
+                    throw new OptimiseException('problems during reading the file');
+        }
         return $data;
     }
 }
\ No newline at end of file