feat(legacy): add current date macro to string block criteria (#3013)

### Description

It is useful to be able to automatically filter tracks to a certain date
or day when scheduling tracks for playback. This adds the ability to do
just that in any string filter with the `date{format}` macro.

 
 Closes:  #3012

legacy/application/models/Block.php

@@ -1612,6 +1612,19 @@ SQL;
         return $storedCrit;
     }
 
+    private function resolveDate($value)
+    {
+        if (!is_string($value)) {
+            return $value;
+        }
+
+        return preg_replace_callback(
+            '/now{(.*?)}/',
+            fn ($matches) => date($matches[1]),
+            $value
+        );
+    }
+
     // this function return list of propel object
     public function getListofFilesMeetCriteria($showLimit = null)
     {
@@ -1677,6 +1690,8 @@ SQL;
                         $spCriteriaExtra = $criteria['extra'];
                     }
 
+                    $spCriteriaValue = $this->resolveDate($spCriteriaValue);
+
                     if ($spCriteriaModifier == 'starts with') {
                         $spCriteriaValue = "{$spCriteriaValue}%";
                     } elseif ($spCriteriaModifier == 'ends with') {