Config Variables - Improve config variable system and initialize variables during setup.

src/Repository/ConfigVariableRepository.php

@@ -5,6 +5,7 @@ namespace App\Repository;
 use App\Entity\ConfigVariable;
 use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
 use Doctrine\Persistence\ManagerRegistry;
+use Ds\Set;
 
 /**
  * @extends ServiceEntityRepository<ConfigVariable>
@@ -51,14 +52,24 @@ class ConfigVariableRepository extends ServiceEntityRepository
      * @param string Variable Key
      * @return ConfigVariable|null Config Variable.
      */
-    public function findVariableByKey($varKey)
+    public function findVariableByKey($varKey): ConfigVariable|null
     {
-        return $this->createQueryBuilder('c')
+        $rs = $this->createQueryBuilder('c')
             ->select('c.key, c.value, c.section')
             ->andWhere('c.key = :val')
             ->setParameter('val', $varKey)
+            ->setMaxResults(1)
             ->getQuery()
-            ->getOneOrNullResult();
+            ->getResult();
+        // FIXME!!!
+        if (!$rs) {
+            return null;
+        }
+        $var = new ConfigVariable();
+        $var->setKey($rs[0]["key"]);
+        $var->setValue($rs[0]["value"]);
+        $var->setSection($rs[0]["section"]);
+        return $var;
     }
 
     /**
@@ -73,4 +84,18 @@ class ConfigVariableRepository extends ServiceEntityRepository
             ->getQuery()
             ->getResult();
     }
+
+    /**
+     * Get all DB config variables names on a Set.
+     * @return Set Returns a Set with all variable names.
+     */
+    public function getVariableSet(): Set
+    {
+        $varList = $this->findAll();
+        $keyList = array_map(function ($var) {
+            return $var->getKey();
+        }, $varList);
+
+        return new Set($keyList);
+    }
 }