cambios importantes

services/Settings.php

@@ -0,0 +1,40 @@
+<?php
+declare(strict_types=1);
+
+class Settings
+{
+    private static ?array $cache = null;
+
+    public static function all(): array
+    {
+        if (self::$cache !== null) return self::$cache;
+        $rows = db()->query("SELECT `key`, `value` FROM settings")->fetchAll();
+        $map  = [];
+        foreach ($rows as $r) $map[$r['key']] = $r['value'];
+        self::$cache = $map;
+        return $map;
+    }
+
+    public static function get(string $key, string $default = ''): string
+    {
+        $all = self::all();
+        return $all[$key] ?? $default;
+    }
+
+    public static function set(string $key, string $value): void
+    {
+        $stmt = db()->prepare("INSERT INTO settings (`key`, `value`) VALUES (?, ?) ON DUPLICATE KEY UPDATE `value` = ?");
+        $stmt->execute([$key, $value, $value]);
+        self::$cache = null;
+    }
+
+    public static function setMany(array $pairs): void
+    {
+        $db = db();
+        $stmt = $db->prepare("INSERT INTO settings (`key`, `value`) VALUES (?, ?) ON DUPLICATE KEY UPDATE `value` = ?");
+        foreach ($pairs as $key => $value) {
+            $stmt->execute([$key, (string)$value, (string)$value]);
+        }
+        self::$cache = null;
+    }
+}