[TASK] Refactored registration functions, moved them to a dedicated service.

Classes/Service/RegisterService.php

@@ -28,6 +28,7 @@ namespace SGalinski\SgMail\Service;
 
 use TYPO3\CMS\Core\Cache\CacheManager;
 use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
+use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 
 /**
@@ -91,10 +92,89 @@ class RegisterService implements \TYPO3\CMS\Core\SingletonInterface {
 	}
 
 	/**
-	 * 
+	 * Read every registered file and create a registration entry in the registerArray if possible
 	 */
 	private function registerExtensions() {
+		foreach ($this->registrationFiles as $registerFile) {
 
+			// clear registerArray
+			$registerArray = [];
+
+			if (\is_file($registerFile)) {
+				$configArray = (include $registerFile);
+
+				$extensionKey = $configArray['extension_key'];
+				$templateKey = $configArray['template_key'];
+
+				if ($extensionKey === NULL || $templateKey === NULL) {
+					continue;
+				}
+
+				$registerArray = $this->writeRegisterArrayEntry(
+					$registerArray, $extensionKey, $templateKey, $configArray
+				);
+			}
+
+			// set the register array after every registration has been parsed
+			$this->registerArray = $registerArray;
+		}
+	}
+
+	/**
+	 * write a single entry into the register array
+	 *
+	 * @param array $registerArray
+	 * @param $extensionKey
+	 * @param $templateKey
+	 * @param array $configArray
+	 * @param bool $transformTemplateFolder
+	 * @param string $storeTemplateExtension
+	 * @return array
+	 */
+	private function writeRegisterArrayEntry(
+		array $registerArray, $extensionKey, $templateKey, array $configArray,
+		$transformTemplateFolder = TRUE, $storeTemplateExtension = ''
+	): array {
+		// If it is not explicitly set in which extension the html should be located, use the extension set in the template settings
+		if ($storeTemplateExtension === '') {
+			$storeTemplateExtension = $extensionKey;
+		}
+
+		// give the option to use the template key as folder name. this is used mainly with auto registering
+		$templateDirectory = $templateKey;
+
+		// by default folders with underscore will be transformed to upper camelcase
+		if ($transformTemplateFolder) {
+			// transform template directory name: your_templates => YourTemplates/
+			$templateDirectoryParts = GeneralUtility::trimExplode('_', $templateKey);
+			$templateDirectory = '';
+			foreach ($templateDirectoryParts as $part) {
+				$templateDirectory .= ucfirst($part);
+			}
+		}
+
+		$templateDirectory .= '/';
+		$templatePath = ExtensionManagementUtility::extPath($storeTemplateExtension) . self::DEFAULT_TEMPLATE_PATH
+			. $templateDirectory;
+
+		if ($configArray['template_path']) {
+			$templatePath = $configArray[$templateKey];
+		}
+
+		$description = $configArray['description'];
+		$subject = $configArray['subject'];
+		$marker = $configArray['markers'];
+
+		$registerArray[$extensionKey][$templateKey] = [
+			'templatePath' => $templatePath,
+			'description' => $description,
+			'marker' => $marker,
+			'extension' => $extensionKey,
+			'templateName' => $templateKey,
+			'subject' => $subject
+		];
+
+		return $registerArray;
 	}
 }