implemented review findings

src/Repository/PlaceRepository.php

@@ -31,25 +31,30 @@ class PlaceRepository
     //TODO: use Map and User instead of id
     public function getRandomNPlaces(int $mapId, int $n, ?int $userId): array
     {
-        if(!isset($userId)) { // anonymous single player
+        if (!isset($userId)) { // anonymous single player
             return $this->getRandomNForMapWithValidPano($mapId, $n);
         } else { // authorized user or multiplayer game with selection based on what the host played before
             $unvisitedPlaces = $this->getRandomUnvisitedNForMapWithValidPano($mapId, $n, $userId);
+            if (count($unvisitedPlaces) == $n) {
+                return $unvisitedPlaces;
+            }
+
             $oldPlaces = $this->getRandomOldNForMapWithValidPano($mapId, $n - count($unvisitedPlaces), $userId);
+            
             return array_merge($unvisitedPlaces, $oldPlaces);
         }
     }
 
     //TODO: use Map instead of id
-    public function getRandomNForMapWithValidPano(int $mapId, int $n, array $exclude = []): array
+    private function getRandomNForMapWithValidPano(int $mapId, int $n): array
     {
         $places = [];
 
         $select = new Select(\Container::$dbConnection, 'places');
-        $select->where('id', 'NOT IN', $exclude);
         $select->where('map_id', '=', $mapId);
         $numberOfPlaces = $select->count();
 
+        $exclude = [];
         for ($i = 1; $i <= $n; ++$i) {
             $place = $this->getRandomForMapWithValidPano($numberOfPlaces, $select, $exclude);
 
@@ -60,31 +65,31 @@ class PlaceRepository
         return $places;
     }
 
-    private function getRandomForMapWithValidPano($numberOfPlaces, $select, array &$exclude, ?callable $pickRandomInt = null): ?Place
+    private function getRandomForMapWithValidPano(int $numberOfPlaces, Select $select, array &$exclude, ?callable $pickRandomInt = null): ?Place
     {
         do {
             $numberOfPlacesLeft = $numberOfPlaces - count($exclude);
             $place = $this->selectRandomFromDbForMap($numberOfPlacesLeft, $select, $exclude, $pickRandomInt);
-            if($place === null) {
+            if ($place === null) {
                 // there is no more never visited place left
                 return null;
             }
 
             $panoId = $place->getFreshPanoId();
-            if($panoId === null) {
+            if ($panoId === null) {
                 $exclude[] = $place->getId();
             }
-        } while($panoId === null);
+        } while ($panoId === null);
 
         return $place;
     }
 
-    private function selectRandomFromDbForMap($numberOfPlacesLeft, $select, array $exclude, ?callable $pickRandomInt): ?Place
+    private function selectRandomFromDbForMap(int $numberOfPlacesLeft, Select $select, array $exclude, ?callable $pickRandomInt): ?Place
     {
-        if($numberOfPlacesLeft <= 0)
+        if ($numberOfPlacesLeft <= 0)
             return null;
 
-        if(!isset($pickRandomInt)) {
+        if (!isset($pickRandomInt)) {
             $randomOffset = random_int(0, $numberOfPlacesLeft - 1);
         } else {
             $randomOffset = $pickRandomInt($numberOfPlacesLeft);
@@ -118,11 +123,11 @@ class PlaceRepository
         // look for as many new places as possible but maximum $n
         do {
             $place = $this->getRandomForMapWithValidPano($numberOfUnvisitedPlaces, $selectUnvisited, $exclude);
-            if(isset($place)) {
+            if (isset($place)) {
                 $places[] = $place;
                 $exclude[] = $place->getId();
             }
-        } while(count($places) < $n && isset($place));
+        } while (count($places) < $n && isset($place));
 
         return $places;
     }
@@ -159,10 +164,10 @@ class PlaceRepository
         };
 
         // look for n - numberOfUnvisitedPlaces places
-        while(count($places) < $n)
+        while (count($places) < $n)
         {
             $place = $this->getRandomForMapWithValidPano($numberOfOldPlaces, $selectOldPlaces, $exclude, $pickGaussianRandomInt);
-            if(isset($place))
+            if (isset($place))
             {
                 $places[] = $place;
                 $exclude[] = $place->getId();