初始化仓库及v1.0.0提交

app/Config/AppConfig.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Config;
+
+class AppConfig
+{
+    private static ?array $cache = null;
+    private static string $configPath = '';
+
+    private static function getConfigPath(): string
+    {
+        if (self::$configPath === '') {
+            self::$configPath = dirname(__DIR__, 2) . '/config/app-config.json';
+        }
+
+        return self::$configPath;
+    }
+
+    private static function load(): array
+    {
+        if (self::$cache !== null) {
+            return self::$cache;
+        }
+
+        $path = self::getConfigPath();
+
+        if (!file_exists($path)) {
+            self::$cache = [];
+            return self::$cache;
+        }
+
+        $content = file_get_contents($path);
+        self::$cache = json_decode($content, true) ?? [];
+
+        return self::$cache;
+    }
+
+    public static function get(string $key, $default = null)
+    {
+        $config = self::load();
+        return $config[$key] ?? $default;
+    }
+
+    public static function set(string $key, $value): void
+    {
+        $config = self::load();
+        $config[$key] = $value;
+        self::$cache = $config;
+
+        $dir = dirname(self::getConfigPath());
+        if (!is_dir($dir)) {
+            mkdir($dir, 0755, true);
+        }
+
+        file_put_contents(self::getConfigPath(), json_encode($config, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE));
+    }
+}