feat: GTSIT 사이트 구축

app/Repositories/SiteSettingRepository.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Database;
+use PDO;
+
+final class SiteSettingRepository
+{
+    private PDO $db;
+
+    public function __construct()
+    {
+        $this->db = Database::connection();
+    }
+
+    public function all(): array
+    {
+        $rows = $this->db->query('SELECT setting_key, setting_value FROM site_settings')->fetchAll();
+        $settings = [];
+        foreach ($rows as $row) $settings[$row['setting_key']] = $row['setting_value'];
+        return $settings;
+    }
+
+    public function save(array $settings): void
+    {
+        $statement = $this->db->prepare(
+            'INSERT INTO site_settings (setting_key, setting_value) VALUES (:key, :value)
+             ON DUPLICATE KEY UPDATE setting_value = VALUES(setting_value)'
+        );
+        $this->db->beginTransaction();
+        try {
+            foreach ($settings as $key => $value) $statement->execute(['key'=>$key, 'value'=>$value]);
+            $this->db->commit();
+        } catch (\Throwable $exception) {
+            $this->db->rollBack();
+            throw $exception;
+        }
+    }
+}