first commit

wp-content/plugins/sitepress-multilingual-cms/classes/settings/CustomFieldChangeDetector.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace WPML\TM\Settings;
+
+use WPML\Core\BackgroundTask;
+use WPML\FP\Lst;
+use WPML\LIB\WP\Hooks;
+use WPML\WP\OptionManager;
+use function WPML\Container\make;
+
+class CustomFieldChangeDetector implements \IWPML_Backend_Action {
+	const PREVIOUS_SETTING = 'previous-custom-fields-to-translate';
+	const DETECTED_SETTING = 'detected-custom-fields-to-translate';
+	const LOCK_TIME        = 2 * MINUTE_IN_SECONDS;
+
+	public function add_hooks() {
+		Hooks::onAction( 'wpml_after_tm_loaded', 1 )
+		     ->then( [ self::class, 'getNew' ] )
+		     ->then( [ self::class, 'notify' ] )
+		     ->then( [ self::class, 'updatePrevious' ] );
+	}
+
+	public static function getNew() {
+		if ( is_null( OptionManager::getOr( null, 'TM', self::PREVIOUS_SETTING ) ) ) {
+			self::updatePrevious();
+		}
+
+		return Lst::diff(
+			Repository::getCustomFieldsToTranslate() ?: [],
+			OptionManager::getOr( [], 'TM', self::PREVIOUS_SETTING )
+		);
+	}
+
+	public static function notify( array $newFields ) {
+		if ( count( $newFields ) ) {
+			OptionManager::update(
+				'TM',
+				self::DETECTED_SETTING,
+				Lst::concat( self::getDetected(), $newFields )
+			);
+		}
+	}
+
+	public static function remove( array $fields ) {
+		if ( count( $fields ) ) {
+			OptionManager::update(
+				'TM',
+				self::DETECTED_SETTING,
+				Lst::diff( self::getDetected(), $fields )
+			);
+		}
+	}
+
+	public static function updatePrevious() {
+		OptionManager::update( 'TM', self::PREVIOUS_SETTING, Repository::getCustomFieldsToTranslate() );
+	}
+
+	public static function getDetected() {
+		return OptionManager::getOr( [], 'TM', self::DETECTED_SETTING );
+	}
+
+	public static function processNewFields() {
+		$newFields = self::getDetected();
+		if ( count( $newFields ) ) {
+
+			/**
+			 * Create a lock to make sure only one background task will run at a time.
+			 * We wont release the lock so it wont be able to run again until the time out is complete.
+			 */
+
+			$lock = make( 'WPML\Utilities\Lock', [ ':name' => self::class ] );
+			if ( $lock->create( self::LOCK_TIME ) ) {
+				BackgroundTask::add( ProcessNewTranslatableFields::class, [ 'newFields' => $newFields ] );
+			}
+		}
+	}
+}