Refactor config management

src/Config/AppConfig.php

@@ -0,0 +1,92 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config;
+
+class AppConfig
+{
+    // App settings
+    protected string $appTitle = 'MailAccountAdmin';
+    protected string $environment = 'production';
+    protected bool $debug = false;
+    protected string $timezone;
+    protected string $dateTimeFormat = 'r';
+
+    // Twig settings
+    protected ?string $twigCacheDir = null;
+
+    // Database settings
+    protected string $databaseHost = 'localhost';
+    protected int $databasePort = 3306;
+    protected string $databaseName = '';
+    protected string $databaseUsername = '';
+    protected string $databasePassword = '';
+
+    protected function __construct()
+    {
+        // Set default timezone from php.ini
+        $this->timezone = ini_get('date.timezone') ?: 'UTC';
+    }
+
+    public static function createFromArray(array $configArray): self
+    {
+        $config = new self();
+
+        foreach ($configArray as $key => $value) {
+            assert(property_exists($config, $key));
+
+            if ($value !== null) {
+                $config->$key = $value;
+            }
+        }
+
+        return $config;
+    }
+
+    public function getAppTitle(): string
+    {
+        return $this->appTitle;
+    }
+
+    public function getAppEnvironment(): string
+    {
+        return $this->environment;
+    }
+
+    public function isDebugMode(): bool
+    {
+        return $this->debug;
+    }
+
+    public function getTimezone(): string
+    {
+        return $this->timezone;
+    }
+
+    public function getDateTimeFormat(): string
+    {
+        // Specify datetime format (https://www.php.net/manual/en/datetime.format.php)
+        // Default value "r": RFC 2822 formatted date (Thu, 21 Dec 2000 16:01:07 +0200)
+        return $this->dateTimeFormat;
+    }
+
+    public function getTwigSettings(): array
+    {
+        return [
+            'cache' => $this->twigCacheDir ?: false,
+            'debug' => $this->isDebugMode(),
+            'strict_variables' => $this->isDebugMode(),
+        ];
+    }
+
+    public function getDatabaseSettings(): array
+    {
+        return [
+            'host' => $this->databaseHost,
+            'port' => $this->databasePort,
+            'dbname' => $this->databaseName,
+            'username' => $this->databaseUsername,
+            'password' => $this->databasePassword,
+        ];
+    }
+}

src/Config/Loaders/EnvConfigLoader.php

@@ -0,0 +1,31 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config\Loaders;
+
+use MailAccountAdmin\Config\AppConfig;
+
+class EnvConfigLoader
+{
+    public static function loadFromEnv(): AppConfig
+    {
+        return AppConfig::createFromArray([
+            // App settings
+            'appTitle' => getenv('APP_TITLE') ?: null,
+            'environment' => getenv('APP_ENV') ?: null,
+            'debug' => getenv('APP_DEBUG') === 'true' ? true : null,
+            'timezone' => getenv('APP_TIMEZONE') ?: null,
+            'dateTimeFormat' => getenv('APP_DATE_TIME_FORMAT') ?: null,
+
+            // Twig settings
+            'twigCacheDir' => getenv('TWIG_CACHE_DIR') ?: null,
+
+            // Database settings
+            'databaseHost' => getenv('DB_HOST') ?: null,
+            'databasePort' => (int)getenv('DB_PORT') ?: null,
+            'databaseName' => getenv('DB_DATABASE') ?: null,
+            'databaseUsername' => getenv('DB_USERNAME') ?: null,
+            'databasePassword' => getenv('DB_PASSWORD') ?: null,
+        ]);
+    }
+}