.env.develop

@@ -3,21 +3,23 @@
 # composer: Set cache directory
 COMPOSER_CACHE_DIR=./.composer
 
-# MariaDB container
+# Environment variables for MariaDB container
 MYSQL_RANDOM_ROOT_PASSWORD=yes
 MYSQL_DATABASE=mailusers
 MYSQL_USER=mailaccountadmin
 MYSQL_PASSWORD=mailaccountadmin
 
 # App settings
+APP_TITLE="MailAccountAdmin [dev]"
+APP_ENV=development
 APP_DEBUG=true
+APP_TIMEZONE=Europe/Berlin
 
-# - Disable Twig cache
+# Disable Twig cache
 TWIG_CACHE_DIR=
-TWIG_STRICT=true
 
-# - Database credentials
+# Database credentials
 DB_HOST=db
 DB_DATABASE=mailusers
-DB_USER=mailaccountadmin
+DB_USERNAME=mailaccountadmin
 DB_PASSWORD=mailaccountadmin

.gitignore

@@ -10,5 +10,9 @@
 # PHP
 /.composer
 /.phpunit.cache
+/.twig.cache
 /coverage
 /vendor
+
+# Production settings
+/config/app.yml

Dockerfile

@@ -3,8 +3,10 @@ FROM php:7.4-apache AS base
 WORKDIR /var/www
 
 RUN apt-get update && \
-    apt-get install -y libzip-dev unzip git && \
+    apt-get install -y git unzip libyaml-dev libzip-dev && \
-    docker-php-ext-install pdo pdo_mysql zip
+    docker-php-ext-install pdo pdo_mysql zip && \
+    pecl install yaml && \
+    docker-php-ext-enable yaml
 
 RUN a2enmod rewrite && \
     sed -ri -e 's!/var/www/html!/var/www/public!g' /etc/apache2/sites-available/*.conf
@@ -18,8 +20,6 @@ RUN cp $PHP_INI_DIR/php.ini-development $PHP_INI_DIR/php.ini && \
     pecl install xdebug && \
     docker-php-ext-enable xdebug
 
-ENV APP_ENV=development
-
 # TODO: production image untested
 #FROM base AS production
 #

TODO.md

@@ -4,7 +4,6 @@
 
 ## General
 
-- Settings from a config file
 - Database migrations
 - Documentation
     - App deployment
@@ -12,6 +11,7 @@
 - Refactor auth and session handling
 
 ## Admin user management
+
 - Create/edit/delete admins
 - Change own password
 

composer.json

@@ -14,6 +14,7 @@
     "require": {
         "php": "^7.4",
         "ext-pdo": "*",
+        "ext-yaml": "*",
         "slim/slim": "^4.8",
         "slim/psr7": "^1.3",
         "php-di/php-di": "^6.3",

config/app.develop.yml

@@ -0,0 +1,19 @@
+# Config file for local development (same settings as .env.develop)
+
+# -- App settings
+appTitle: "MailAccountAdmin [dev]"
+environment: development
+debug: true
+timezone: Europe/Berlin
+
+# -- Twig settings
+twig:
+  cacheDir:
+
+# -- Database settings
+database:
+  host: db
+  port: 3306
+  name: mailusers
+  username: mailaccountadmin
+  password: mailaccountadmin

config/app.example.yml

@@ -0,0 +1,23 @@
+# This is an example config file for MailAccountAdmin.
+# Copy this file to /config/app.yml and change as needed.
+# Settings that are commented out represent the default values.
+
+# -- App settings
+# appTitle: MailAccountAdmin
+# environment: production
+# debug: false
+# timezone: UTC
+# dateTimeFormat: r
+
+# -- Twig settings
+twig:
+  # Cache directory for Twig templates (default: unset, which means no cache is used)
+  cacheDir: .twig.cache
+
+# -- Database settings
+database:
+  host: localhost
+  port: 3306
+  name: mailusers
+  username: mailaccountadmin
+  password: very_secret_password

public/index.php

@@ -3,19 +3,25 @@ declare(strict_types=1);
 
 require_once __DIR__ . '/../vendor/autoload.php';
 
+use MailAccountAdmin\Config\Loaders\AutoConfigLoader;
 use MailAccountAdmin\Dependencies;
 use MailAccountAdmin\Middlewares;
 use MailAccountAdmin\Routes;
-use MailAccountAdmin\Settings;
 use Slim\Factory\AppFactory;
 
+const ROOT_DIR = __DIR__ . '/..';
+
 session_start();
 
-$settings = new Settings();
+// Load application config (from config file or environment variables)
-$container = Dependencies::createContainer($settings);
+$configLoader = new AutoConfigLoader();
+$config = $configLoader->loadConfig();
+
+// Create application
+$container = Dependencies::createContainer($config);
 $app = AppFactory::createFromContainer($container);
 
-Middlewares::setMiddlewares($app, $settings);
+Middlewares::setMiddlewares($app, $config);
 Routes::setRoutes($app);
 
 $app->run();

src/Config/AppConfig.php

@@ -0,0 +1,105 @@
+<?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 $this->dateTimeFormat;
+    }
+
+    public function getTwigCacheDir(): ?string
+    {
+        if (empty($this->twigCacheDir)) {
+            return null;
+        } elseif (substr($this->twigCacheDir, 0, 1) === '/') {
+            // Absolute path
+            return $this->twigCacheDir;
+        } else {
+            // Relative path
+            return ROOT_DIR . '/' . $this->twigCacheDir;
+        }
+    }
+
+    public function getTwigSettings(): array
+    {
+        return [
+            'cache' => $this->getTwigCacheDir() ?: 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/AutoConfigLoader.php

@@ -0,0 +1,28 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config\Loaders;
+
+use MailAccountAdmin\Config\AppConfig;
+
+class AutoConfigLoader implements ConfigLoaderInterface
+{
+    private ConfigLoaderInterface $configLoader;
+
+    public function __construct()
+    {
+        $yamlFilePath = ROOT_DIR . '/config/app.yml';
+
+        // Check if yml config file exists
+        if (file_exists($yamlFilePath)) {
+            $this->configLoader = new YamlConfigLoader($yamlFilePath);
+        } else {
+            $this->configLoader = new EnvConfigLoader();
+        }
+    }
+
+    public function loadConfig(): AppConfig
+    {
+        return $this->configLoader->loadConfig();
+    }
+}

src/Config/Loaders/ConfigLoaderInterface.php

@@ -0,0 +1,11 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config\Loaders;
+
+use MailAccountAdmin\Config\AppConfig;
+
+interface ConfigLoaderInterface
+{
+    public function loadConfig(): AppConfig;
+}

src/Config/Loaders/EnvConfigLoader.php

@@ -0,0 +1,31 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config\Loaders;
+
+use MailAccountAdmin\Config\AppConfig;
+
+class EnvConfigLoader implements ConfigLoaderInterface
+{
+    public function loadConfig(): 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,
+        ]);
+    }
+}

src/Config/Loaders/YamlConfigLoader.php

@@ -0,0 +1,48 @@
+<?php
+declare(strict_types=1);
+
+namespace MailAccountAdmin\Config\Loaders;
+
+use MailAccountAdmin\Config\AppConfig;
+
+class YamlConfigLoader implements ConfigLoaderInterface
+{
+    private string $filePath;
+
+    public function __construct(string $filePath)
+    {
+        assert(file_exists($filePath));
+
+        $this->filePath = $filePath;
+    }
+
+    public function loadConfig(): AppConfig
+    {
+        // Parse yml config file
+        $parsedConfig = yaml_parse_file($this->filePath);
+
+        // Check datatypes
+        assert(is_array($parsedConfig));
+        assert(!isset($parsedConfig['twig']) || is_array($parsedConfig['twig']));
+        assert(!isset($parsedConfig['database']) || is_array($parsedConfig['database']));
+
+        return AppConfig::createFromArray([
+            // App settings
+            'appTitle' => $parsedConfig['appTitle'] ?? null,
+            'environment' => $parsedConfig['environment'] ?? null,
+            'debug' => (bool)$parsedConfig['debug'] ?? null,
+            'timezone' => $parsedConfig['timezone'] ?? null,
+            'dateTimeFormat' => $parsedConfig['dateTimeFormat'] ?? null,
+
+            // Twig settings
+            'twigCacheDir' => $parsedConfig['twig']['cacheDir'] ?? null,
+
+            // Database settings
+            'databaseHost' => $parsedConfig['database']['host'] ?? null,
+            'databasePort' => (int)$parsedConfig['database']['port'] ?? null,
+            'databaseName' => $parsedConfig['database']['name'] ?? null,
+            'databaseUsername' => $parsedConfig['database']['username'] ?? null,
+            'databasePassword' => $parsedConfig['database']['password'] ?? null,
+        ]);
+    }
+}

src/Dependencies.php

@@ -7,6 +7,7 @@ use DI\Container;
 use MailAccountAdmin\Common\PasswordHelper;
 use MailAccountAdmin\Common\SessionHelper;
 use MailAccountAdmin\Common\UserHelper;
+use MailAccountAdmin\Config\AppConfig;
 use MailAccountAdmin\Frontend\Accounts\AccountController;
 use MailAccountAdmin\Frontend\Accounts\AccountHandler;
 use MailAccountAdmin\Frontend\Domains\DomainController;
@@ -23,43 +24,43 @@ use Twig\Extension\CoreExtension as TwigCoreExtension;
 
 class Dependencies
 {
-    public const SETTINGS = 'settings';
+    public const CONFIG = 'config';
     public const TWIG = 'view';
     private const TWIG_TEMPLATE_DIR = __DIR__ . '/../templates';
     public const DATABASE = 'database';
 
-    public static function createContainer(Settings $settings): Container
+    public static function createContainer(AppConfig $config): Container
     {
         $container = new Container();
 
-        // App settings
+        // App configuration
-        $container->set(self::SETTINGS, $settings);
+        $container->set(self::CONFIG, $config);
 
         // App information
         $container->set(AppInfo::class, function (ContainerInterface $c) {
-            /** @var Settings $settings */
+            /** @var AppConfig $config */
-            $settings = $c->get(self::SETTINGS);
+            $config = $c->get(self::CONFIG);
-            $versionHelper = new VersionHelper();
+            $versionHelper = new VersionHelper($config);
 
             return new AppInfo(
-                $settings->getAppTitle(),
+                $config->getAppTitle(),
                 $versionHelper->getAppVersion(),
             );
         });
 
         // Twig template engine
         $container->set(self::TWIG, function (ContainerInterface $c) {
-            /** @var Settings $settings */
+            /** @var AppConfig $config */
-            $settings = $c->get(self::SETTINGS);
+            $config = $c->get(self::CONFIG);
 
             // Create Twig view
-            $twig = Twig::create(self::TWIG_TEMPLATE_DIR, $settings->getTwigSettings());
+            $twig = Twig::create(self::TWIG_TEMPLATE_DIR, $config->getTwigSettings());
 
             // Set default date format
             /** @var TwigCoreExtension $coreExtension */
             $coreExtension = $twig->getEnvironment()->getExtension(TwigCoreExtension::class);
-            $coreExtension->setDateFormat($settings->getDateFormat());
+            $coreExtension->setDateFormat($config->getDateTimeFormat());
-            $coreExtension->setTimezone($settings->getTimezone());
+            $coreExtension->setTimezone($config->getTimezone());
 
             // Add app information to globals
             $appInfo = $c->get(AppInfo::class);
@@ -71,9 +72,9 @@ class Dependencies
 
         // Database connection
         $container->set(self::DATABASE, function (ContainerInterface $c) {
-            /** @var Settings $settings */
+            /** @var AppConfig $config */
-            $settings = $c->get(self::SETTINGS);
+            $config = $c->get(self::CONFIG);
-            $dbSettings = $settings->getDatabaseSettings();
+            $dbSettings = $config->getDatabaseSettings();
 
             return new PDO(
                 "mysql:dbname={$dbSettings['dbname']};host={$dbSettings['host']};port={$dbSettings['port']}",
@@ -108,7 +109,7 @@ class Dependencies
         });
 
         // Helper classes
-        $container->set(SessionHelper::class, function (ContainerInterface $c) {
+        $container->set(SessionHelper::class, function () {
             return new SessionHelper();
         });
 
@@ -120,7 +121,7 @@ class Dependencies
             );
         });
 
-        $container->set(PasswordHelper::class, function (ContainerInterface $c) {
+        $container->set(PasswordHelper::class, function () {
             return new PasswordHelper();
         });
 

src/Middlewares.php

@@ -4,14 +4,15 @@ declare(strict_types=1);
 namespace MailAccountAdmin;
 
 use MailAccountAdmin\Auth\AuthMiddleware;
+use MailAccountAdmin\Config\AppConfig;
 use Slim\App;
 use Slim\Views\TwigMiddleware;
 
 class Middlewares
 {
-    public static function setMiddlewares(App $app, Settings $settings): void
+    public static function setMiddlewares(App $app, AppConfig $config): void
     {
-        $displayErrorDetails = $settings->isDebugMode();
+        $displayErrorDetails = $config->isDebugMode();
 
         $app->addErrorMiddleware($displayErrorDetails, true, true);
         $app->add(new AuthMiddleware());

src/Settings.php

@@ -1,49 +0,0 @@
-<?php
-declare(strict_types=1);
-
-namespace MailAccountAdmin;
-
-class Settings
-{
-    public function getAppTitle(): string
-    {
-        return getenv('APP_TITLE') ?: 'MailAccountAdmin';
-    }
-
-    public function isDebugMode(): bool
-    {
-        return getenv('APP_DEBUG') === 'true';
-    }
-
-    public function getTimezone(): string
-    {
-        return 'Europe/Berlin';
-    }
-
-    public function getDateFormat(): string
-    {
-        // Default date format (https://www.php.net/manual/en/datetime.format.php)
-        // RFC 2822 formatted date (Thu, 21 Dec 2000 16:01:07 +0200)
-        return 'r';
-    }
-
-    public function getTwigSettings(): array
-    {
-        return [
-            'cache' => getenv('TWIG_CACHE_DIR') ?: false,
-            'debug' => $this->isDebugMode(),
-            'strict_variables' => getenv('TWIG_STRICT') === 'true',
-        ];
-    }
-
-    public function getDatabaseSettings(): array
-    {
-        return [
-            'host' => getenv('DB_HOST') ?: 'localhost',
-            'port' => getenv('DB_PORT') ?: 3306,
-            'dbname' => getenv('DB_DATABASE') ?: '',
-            'username' => getenv('DB_USER') ?: '',
-            'password' => getenv('DB_PASSWORD') ?: '',
-        ];
-    }
-}

src/VersionHelper.php

@@ -3,16 +3,18 @@ declare(strict_types=1);
 
 namespace MailAccountAdmin;
 
+use MailAccountAdmin\Config\AppConfig;
+
 class VersionHelper
 {
     private string $version;
 
-    public function __construct()
+    public function __construct(AppConfig $config)
     {
         $version = $this->loadFromVersionFile();
         if (!empty($version)) {
             $this->version = $version;
-        } elseif ($this->inDevelopmentMode()) {
+        } elseif ($config->getAppEnvironment() === 'development') {
             $this->version = '[dev version]';
         } else {
             $this->version = '[undefined version]';
@@ -34,9 +36,4 @@ class VersionHelper
         }
         return null;
     }
-
-    private function inDevelopmentMode(): bool
-    {
-        return getenv('APP_ENV') === 'development';
-    }
 }

templates/base.html.twig

@@ -12,7 +12,11 @@
 <header>
     <h1>{{ app_info.getTitle() }}</h1>
     <div class="header_appversion">
+        {% if logged_in | default() %}
             <a href="{{ app_info.getRepositoryUrl() }}">{{ app_info.getVersion() }}</a>
+        {% else %}
+            {{ app_info.getVersion() }}
+        {% endif %}
     </div>
     <div class="header_spacer"></div>
     <div class="header_userstatus">