Merge pull request #4 from maschmann/feature/import_and_default_values

Feature/import and default values

CHANGELOG.md

@@ -0,0 +1,20 @@
+# Changelog
+
+## v2.0.0
+
+* Dropping php 5.3 support
+* architectural changes
+
+## v1.2.0
+
+* improved overall code quality (scrutinizer suggestions)
+* improved code coverage
+* reworked __construct() behavior of Config classes
+
+## v1.1.0
+
+* Moved to PSR-4, closed extension points
+
+## v1.0.0
+
+* First stable draft release

Config/AbstractConfig.php

@@ -0,0 +1,166 @@
+<?php
+/*
+ * This file is part of the php-utilities package.
+ *
+ * (c) Marc Aschmann <maschmann@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Asm\Config;
+
+use Asm\Data\Data;
+use Symfony\Component\Yaml\Yaml;
+
+/**
+ * Class AbstractConfig
+ *
+ * @package Asm\Config
+ * @author marc aschmann <maschmann@gmail.com>
+ * @codeCoverageIgnore
+ * @uses Asm\Data\Data
+ * @uses Symfony\Component\Yaml\Yaml
+ */
+abstract class AbstractConfig extends Data
+{
+    /**
+     * @var bool
+     */
+    protected $filecheck = true;
+
+    /**
+     * @var array
+     */
+    protected $imports = [];
+
+    /**
+     * @var array
+     */
+    protected $default = [];
+
+    /**
+     * Default constructor.
+     *
+     * @param array $param
+     */
+    public function __construct(array $param)
+    {
+        if (isset($param['filecheck'])) {
+            $this->filecheck = (bool)$param['filecheck'];
+        }
+
+        $this->setConfig($param['file']);
+    }
+
+    /**
+     * Add named property to config object
+     * and insert config as array.
+     *
+     * @param string $name name of property
+     * @param string $file string $file absolute filepath/filename.ending
+     */
+    public function addConfig($name, $file)
+    {
+        $this->set($name, $this->readConfig($file));
+    }
+
+    /**
+     * Read config file via YAML parser.
+     *
+     * @param  string $file absolute filepath/filename.ending
+     * @return array config array
+     */
+    public function readConfig($file)
+    {
+        $config = $this->readFile($file);
+        $config = $this->extractImports($config);
+        $config = $this->extractDefault($config);
+        $this->mergeDefault();
+
+        return array_replace_recursive(
+            $this->default,
+            $config
+        );
+    }
+
+    /**
+     * Add config to data storage.
+     *
+     * @param string $file absolute filepath/filename.ending
+     */
+    public function setConfig($file)
+    {
+        $this->setByArray(
+            array_replace_recursive(
+                $this->default,
+                $this->readConfig($file)
+            )
+        );
+    }
+
+    /**
+     * Read yaml files.
+     *
+     * @param string $file path/filename
+     * @return array
+     */
+    private function readFile($file)
+    {
+        if ($this->filecheck && !is_file($file)) {
+            throw new \InvalidArgumentException(
+                'Config::Abstract() - Given config file ' . $file . ' does not exist!'
+            );
+        }
+
+        return (array)Yaml::parse($file);
+    }
+
+    /**
+     * get all import files from config, if set and remove node.
+     *
+     * @param array $config
+     * @return array
+     */
+    private function extractImports(array $config)
+    {
+        if (array_key_exists('imports', $config) && 0 < count($config['imports'])) {
+            $this->imports = [];
+            foreach ($config['imports'] as $key => $import) {
+                if (false === empty($import['resource'])) {
+                    $this->imports = array_replace_recursive(
+                        $this->imports,
+                        $this->readFile($import['resource'])
+                    );
+                }
+            }
+
+            unset($config['imports']);
+        }
+
+        return $config;
+    }
+
+    /**
+     * Get default values if set and remove node from config.
+     *
+     * @param array $config
+     * @return array
+     */
+    private function extractDefault($config)
+    {
+        if (array_key_exists('default', $config)) {
+            $this->default = $config['default'];
+            unset($config['default']);
+        }
+
+        return $config;
+    }
+
+    /**
+     * Prepare the defaults and replace recursively.
+     */
+    private function mergeDefault()
+    {
+        $this->default = array_replace_recursive($this->imports, $this->default);
+    }
+}

Config/Config.php

@@ -17,15 +17,6 @@
  */
 final class Config
 {
-    /**
-     * @var array
-     */
-    private static $whitelist = [
-        'ConfigDefault',
-        'ConfigEnv',
-        'ConfigTimer',
-    ];
-
     /**
      * Get object of specific class.
      *
@@ -37,11 +28,11 @@ final class Config
      */
     public static function factory(array $param, $class = 'ConfigDefault')
     {
-        if (in_array($class, self::$whitelist)) {
-            if (false === strpos($class, 'Asm')) {
-                $class = __NAMESPACE__ . '\\' . $class;
-            }
+        if (false === strpos($class, 'Asm')) {
+            $class = __NAMESPACE__ . '\\' . $class;
+        }
 
+        if (class_exists($class)) {
             // allow config names without ending
             if (empty($param['file'])) {
                 throw new \InvalidArgumentException('Config::factory() - config filename missing in param array!');

Config/ConfigDefault.php

@@ -15,6 +15,6 @@
  * @package Asm\Config
  * @author marc aschmann <maschmann@gmail.com>
  */
-final class ConfigDefault extends ConfigAbstract implements ConfigInterface
+final class ConfigDefault extends AbstractConfig implements ConfigInterface
 {
 }

Config/ConfigEnv.php

@@ -17,7 +17,7 @@
  * @package Asm\Config
  * @author marc aschmann <maschmann@gmail.com>
  */
-final class ConfigEnv extends ConfigAbstract implements ConfigInterface
+final class ConfigEnv extends AbstractConfig implements ConfigInterface
 {
     /**
      * @var string
@@ -66,6 +66,11 @@ private function mergeEnvironments($param)
             $merged = $config->get($this->defaultEnv);
         }
 
-        $this->setByArray($merged);
+        $this->setByArray(
+            array_replace_recursive(
+                $this->default,
+                $merged
+            )
+        );
     }
 }

Config/ConfigTimer.php

@@ -15,7 +15,7 @@
  * @package Asm\Config
  * @author marc aschmann <maschmann@gmail.com>
  */
-final class ConfigTimer extends ConfigAbstract implements ConfigInterface
+final class ConfigTimer extends AbstractConfig implements ConfigInterface
 {
     /**
      * Convert config date strings to \DateTime objects or \DateIntervals.

README.md

@@ -28,6 +28,16 @@ Available types are:
 * ConfigEnv - provides the possibility to get an environment-merged config. Based on the currently provided env, you'll have e.g. prod -> dev merged, with prod node as a master.
 * ConfigTimer is a specialised for of config to provide pre-generated DateTime objects for the Timer class.
 
+Configs now also support the "imports" syntax from symfony configs.
+
+```
+imports:
+    - { resource: defaults.yml }
+```
+There is the possibility to use a "default" node in all configs, except timers, which will be used as merge-base.
+Imported configs will be treated just like the "default" node and also become the base for merging.
+The order of merges is import -> default -> prod -> $env.
+
 ### Timer
 Provides functionality to check if there's a current holiday, has configurable "timers" to check uf e.g. your hotline should be available etc.
 Extensive examples can be found within both, the TestData and UnitTests :-)