From 156214016abd723dc6cd9096d76e300efdb715c7 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim=20D=C3=BCsterhus?= <duesterhus@woltlab.com>
Date: Mon, 30 May 2016 16:04:59 +0200
Subject: [PATCH] Add EmailTemplateEngine

---
 .../install/files/lib/system/WCF.class.php    |  7 +++
 .../template/EmailTemplateEngine.class.php    | 45 +++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 wcfsetup/install/files/lib/system/template/EmailTemplateEngine.class.php

diff --git a/wcfsetup/install/files/lib/system/WCF.class.php b/wcfsetup/install/files/lib/system/WCF.class.php
index 40f64c8d17..9918db2387 100644
--- a/wcfsetup/install/files/lib/system/WCF.class.php
+++ b/wcfsetup/install/files/lib/system/WCF.class.php
@@ -31,6 +31,7 @@ use wcf\system\request\RouteHandler;
 use wcf\system\session\SessionFactory;
 use wcf\system\session\SessionHandler;
 use wcf\system\style\StyleHandler;
+use wcf\system\template\EmailTemplateEngine;
 use wcf\system\template\TemplateEngine;
 use wcf\system\user\storage\UserStorageHandler;
 use wcf\util\FileUtil;
@@ -550,10 +551,12 @@ class WCF {
 				// add template path and abbreviation
 				$this->getTPL()->addApplication($abbreviation, $packageDir . 'templates/');
 			}
+			EmailTemplateEngine::getInstance()->addApplication($abbreviation, $packageDir . 'templates/');
 			
 			// init application and assign it as template variable
 			self::$applicationObjects[$application->packageID] = call_user_func([$className, 'getInstance']);
 			$this->getTPL()->assign('__'.$abbreviation, self::$applicationObjects[$application->packageID]);
+			EmailTemplateEngine::getInstance()->assign('__'.$abbreviation, self::$applicationObjects[$application->packageID]);
 		}
 		else {
 			unset(self::$autoloadDirectories[$abbreviation]);
@@ -626,6 +629,10 @@ class WCF {
 			'__wcf' => $this,
 			'__wcfVersion' => LAST_UPDATE_TIME // @deprecated since 2.1, use LAST_UPDATE_TIME directly
 		]);
+		EmailTemplateEngine::getInstance()->registerPrefilter(['event', 'hascontent', 'lang']);
+		EmailTemplateEngine::getInstance()->assign([
+			'__wcf' => $this
+		]);
 	}
 	
 	/**
diff --git a/wcfsetup/install/files/lib/system/template/EmailTemplateEngine.class.php b/wcfsetup/install/files/lib/system/template/EmailTemplateEngine.class.php
new file mode 100644
index 0000000000..7941e1869a
--- /dev/null
+++ b/wcfsetup/install/files/lib/system/template/EmailTemplateEngine.class.php
@@ -0,0 +1,45 @@
+<?php
+namespace wcf\system\template;
+use wcf\system\WCF;
+
+/**
+ * Loads and displays templates in emails.
+ * 
+ * @author	Tim Duesterhus
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @package	com.woltlab.wcf
+ * @subpackage	system.template
+ * @category	Community Framework
+ */
+class EmailTemplateEngine extends TemplateEngine {
+	/**
+	 * @inheritDoc
+	 */
+	protected $environment = 'email';
+	
+	/**
+	 * @inheritDoc
+	 */
+	protected function init() {
+		parent::init();
+		
+		$sql = "SELECT	templateGroupID
+			FROM	wcf".WCF_N."_template_group
+			WHERE	templateGroupFolderName = ?";
+		$statement = WCF::getDB()->prepareStatement($sql);
+		$statement->execute(['_wcf_email/']);
+		
+		parent::setTemplateGroupID($statement->fetchSingleColumn());
+	}
+	
+	/**
+	 * This method always throws, because changing the template
+	 * group is not supported.
+	 * 
+	 * @throws \BadMethodCallException
+	 */
+	public function setTemplateGroupID($templateGroupID) {
+		throw new \BadMethodCallException("You may not change the template group of the email template engine");
+	}
+}
-- 
2.20.1