MappableSettings.php
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MappableSettings.php
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	<?php

	namespace Nasqueron\SAAS\MediaWiki\Configuration;

	///
	/// Temporary hack to get clean configuration.
	///
	/// Plan is to deploy the MediaWiki SaaS on a dedicated node.
	///
	/// Meanwhile, as we share the main Nasqueron MySQL database,
	/// with a history of databases going back to 2001, we need
	/// to map nicely named site key to actual databases names.

	abstract class MappableSettings {

	abstract static public function getDatabaseMap() : array;
	abstract static public function getMappedSettings() : array;

	static public function getSettings () : array {
	$settings = [];
	foreach (static::getMappedSettings() as $setting => $values) {
	$settings[$setting] = self::mapDatabases($values);
	}
	return $settings;
	}

	static private function mapDatabases ($items) {
	$setting = [];
	foreach ($items as $key => $value) {
	$mappedKey = self::mapDatabase($key);
	$setting[$mappedKey] = $value;
	}
	return $setting;
	}

	static private function mapDatabase ($key) {
	foreach (static::getDatabaseMap() as $canonical => $actual) {
	if ($key === $canonical) {
	return $actual;
	}
	}

	return $key;
	}

	}