Added option to define a schedule date when posting items

src/Model/Item.php

@@ -1143,6 +1143,9 @@ class Item
 
 		if (!$dontcache) {
 			if ($notify) {
+				if (!\Friendica\Content\Feature::isEnabled($posted_item['uid'], 'explicit_mentions') && ($posted_item['gravity'] == GRAVITY_COMMENT)) {
+					Tag::createImplicitMentions($posted_item['uri-id'], $posted_item['thr-parent-id']);
+				}
 				Hook::callAll('post_local_end', $posted_item);
 			} else {
 				Hook::callAll('post_remote_end', $posted_item);

src/Module/Item/Compose.php

@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Item;
 
+use DateTime;
 use Friendica\BaseModule;
 use Friendica\Content\Feature;
 use Friendica\Core\ACL;
@@ -34,6 +35,8 @@ use Friendica\Model\User;
 use Friendica\Module\Security\Login;
 use Friendica\Network\HTTPException\NotImplementedException;
 use Friendica\Util\Crypto;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Temporal;
 
 class Compose extends BaseModule
 {
@@ -162,6 +165,14 @@ class Compose extends BaseModule
 			'$wait'         => DI::l10n()->t('Please wait'),
 			'$placeholdertitle' => DI::l10n()->t('Set title'),
 			'$placeholdercategory' => (Feature::isEnabled(local_user(),'categories') ? DI::l10n()->t('Categories (comma-separated list)') : ''),
+			'$scheduled_at' => Temporal::getDateTimeField(
+				new DateTime(),
+				DateTime::createFromFormat(DateTimeFormat::MYSQL, DateTimeFormat::local('now + 6 months')),
+				null,
+				DI::l10n()->t('Scheduled at'),
+				'scheduled_at',
+			),
+
 
 			'$title'        => $title,
 			'$category'     => $category,

src/Util/Temporal.php

@@ -225,7 +225,7 @@ class Temporal
 	public static function getDateTimeField(
 		DateTime $minDate,
 		DateTime $maxDate,
-		DateTime $defaultDate,
+		DateTime $defaultDate = null,
 		$label,
 		$id       = 'datetimepicker',
 		$pickdate = true,