modified base query clas and connections

src/Connection.php

@@ -8,17 +8,25 @@
 
 class Connection
 {
+    private static $database;
+    private static $host;
+    private static $user;
+    private static $password;
+
     public function __construct(
         array $config
     ) {
-        if(!in_array('database',$config) && !in_array('hostname',$config) && !in_array('username',$config)){
+        if (!in_array('database', $config) && !in_array('hostname', $config) && !in_array('username', $config)) {
             return new Exception('all keys required database,hostname,username cannot be empty');
         }
-        // $connection = $config['connection'] ?: 'mysql';
-        $database = $config['database'];
-        $host = $config['hostname'];
-        $user = $config['username'];
-        $password = $config['password'] ?: '';
-        return (new Mysql($host, $database, $user, $password))->connect();
+        self::$database = $config['database'] ?: 'test';
+        self::$host = $config['hostname'] ?: 'localhost';
+        self::$user = $config['username'] ?: '';
+        self::$password = $config['password'] ?: '';
+    }
+
+    public static function connect()
+    {
+        return (new Mysql(self::$host, self::$database, self::$user, self::$password))->connect();
     }
 }

src/Query.php

@@ -20,7 +20,7 @@ class Query
     protected $limit;
     protected $offset;
 
-    protected PDO $pdo;
+    protected PDO|Connection $pdo;
     public function __construct(
         PDO|Connection $connection
     ) {