Delete document and file from system when the case is deleted

CRM/Documents/Entity/Document.php

@@ -411,4 +411,25 @@ class CRM_Documents_Entity_Document {
     return $this->status_id;
   }
 
+  /**
+   * Returns true when this document is still attached to case, a contact
+   * or any other entity.
+   *
+   * @return bool
+   */
+  public function isAttached() {
+    if (count($this->getContactIds())) {
+      return true;
+    }
+    if (is_array($this->getCaseIds()) && count($this->getCaseIds())) {
+      return true;
+    } elseif (!is_array($this->getCaseIds()) && $this->getCaseIds()) {
+      return true;
+    }
+    if (count($this->getEntities())) {
+      return true;
+    }
+    return false;
+  }
+
 }

CRM/Documents/Entity/DocumentRepository.php

@@ -466,6 +466,17 @@ class CRM_Documents_Entity_DocumentRepository {
     }
   }
 
+  /**
+   * @param \CRM_Documents_Entity_Document[] $docs
+   *
+   * @return void
+   */
+  public function removeMultipleDocuments(array $docs) {
+    foreach($docs as $doc) {
+      $this->remove($doc);
+    }
+  }
+
   protected function removeContacts(CRM_Documents_Entity_Document $document) {
     $sql = "DELETE FROM `civicrm_document_contact` WHERE `document_id` = %1";
     CRM_Core_DAO::executeQuery($sql, array(

documents.php

@@ -21,7 +21,12 @@ function documents_civicrm_container(ContainerBuilder $container) {
  * @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_config
  */
 function documents_civicrm_config(&$config) {
+  static $_alreadyRun = FALSE;
   _documents_civix_civicrm_config($config);
+  if (!$_alreadyRun) {
+    \Civi::dispatcher()->addListener('civi.dao.preDelete', 'documents_civicrm_preDelete');
+  }
+  $_alreadyRun = TRUE;
 }
 
 /**
@@ -224,10 +229,15 @@ function documents_civicrm_pre( $op, $objectName, $id, &$params ) {
       try {
         $contact = civicrm_api3('Contact', 'getsingle', array('contact_id' => $id, 'is_deleted' => '1'));
         //contact is in trash so this deletes the contact permanenty
+        /** @var \CRM_Documents_Entity_Document[] $docs */
         $docs = $repo->getDocumentsByContactId($id);
         foreach($docs as $doc) {
           $doc->removeContactId($id);
-          $repo->persist($doc);
+          if ($doc->isAttached()) {
+            $repo->persist($doc);
+          } else {
+            $repo->remove($doc);
+          }
         }
       } catch (Exception $e) {
         //contact not found, or contact is in transh
@@ -252,6 +262,15 @@ function documents_civicrm_pre( $op, $objectName, $id, &$params ) {
   }
 }
 
+function documents_civicrm_preDelete(\Civi\Core\DAO\Event\PreDelete $event) {
+  if ($event->object instanceof CRM_Case_DAO_Case) {
+    $repo = CRM_Documents_Entity_DocumentRepository::singleton();
+    /** @var \CRM_Documents_Entity_Document[] $docs */
+    $docs = $repo->getDocumentsByCaseId($event->object->id);
+    $repo->removeMultipleDocuments($docs);
+  }
+}
+
 function documents_civicrm_postSave_civicrm_case($dao) {
   $repo = CRM_Documents_Entity_DocumentRepository::singleton();
   if (!$dao->id) {

info.xml

@@ -14,8 +14,8 @@
     <url desc="Support">http://civicoop.org</url>
     <url desc="Licensing">http://www.gnu.org/licenses/agpl-3.0.html</url>
   </urls>
-  <releaseDate>2022-11-04</releaseDate>
-  <version>1.22</version>
+  <releaseDate>2023-02-03</releaseDate>
+  <version>1.23</version>
   <develStage>stable</develStage>
   <compatibility>
     <ver>5.41</ver>