From 78ea0d7512a5a2b17abc15527921c7b0bf9eb0ab Mon Sep 17 00:00:00 2001
From: Yuri Kuznetsov <yurikuzn@users.noreply.github.com>
Date: Fri, 4 Jul 2025 09:38:41 +0300
Subject: [PATCH] email template link mapping

---
 .../Resources/metadata/app/emailTemplate.json |  15 ++
 .../Tools/EmailTemplate/EntityMapProvider.php | 131 ++++++++++++++++++
 .../Espo/Tools/EmailTemplate/Processor.php    |  12 +-
 schema/metadata/app/emailTemplate.json        |  12 ++
 4 files changed, 169 insertions(+), 1 deletion(-)
 create mode 100644 application/Espo/Modules/Crm/Resources/metadata/app/emailTemplate.json
 create mode 100644 application/Espo/Tools/EmailTemplate/EntityMapProvider.php

diff --git a/application/Espo/Modules/Crm/Resources/metadata/app/emailTemplate.json b/application/Espo/Modules/Crm/Resources/metadata/app/emailTemplate.json
new file mode 100644
index 0000000000..6e8eabdc98
--- /dev/null
+++ b/application/Espo/Modules/Crm/Resources/metadata/app/emailTemplate.json
@@ -0,0 +1,15 @@
+{
+    "entityLinkMapping": {
+        "Contact": {
+            "Account": "account"
+        },
+        "Opportunity": {
+            "Account": "account",
+            "Contact": "contact"
+        },
+        "Case": {
+            "Account": "account",
+            "Contact": "contact"
+        }
+    }
+}
diff --git a/application/Espo/Tools/EmailTemplate/EntityMapProvider.php b/application/Espo/Tools/EmailTemplate/EntityMapProvider.php
new file mode 100644
index 0000000000..2030e6b0e5
--- /dev/null
+++ b/application/Espo/Tools/EmailTemplate/EntityMapProvider.php
@@ -0,0 +1,131 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Tools\EmailTemplate;
+
+use Espo\Core\Acl\GlobalRestriction;
+use Espo\Core\AclManager;
+use Espo\Core\Record\ServiceContainer;
+use Espo\Core\Utils\Metadata;
+use Espo\Entities\User;
+use Espo\ORM\Entity;
+use Espo\ORM\EntityManager;
+
+/**
+ * @since 9.2.0
+ * @internal
+ */
+class EntityMapProvider
+{
+    public function __construct(
+        private EntityManager $entityManager,
+        private AclManager $aclManager,
+        private ServiceContainer $serviceContainer,
+        private Metadata $metadata,
+    ) {}
+
+    /**
+     * @return array<string, Entity>
+     */
+    public function get(Entity $entity, User $user, bool $applyAcl): array
+    {
+        /** @var array<string, string> $map */
+        $map = $this->metadata->get("app.emailTemplate.entityLinkMapping.{$entity->getEntityType()}") ?? [];
+
+        $output = [];
+
+        foreach ($map as $entityType => $link) {
+            $related = $this->getRelated(
+                entity: $entity,
+                link: $link,
+                user: $user,
+                applyAcl: $applyAcl,
+            );
+
+            if ($related) {
+                $output[$entityType] = $related;
+            }
+        }
+
+        return $output;
+    }
+
+    private function getRelated(
+        Entity $entity,
+        string $link,
+        User $user,
+        bool $applyAcl,
+    ): ?Entity {
+
+        $entityDefs = $this->entityManager->getDefs()->getEntity($entity->getEntityType());
+
+        $forbiddenLinkList = $this->aclManager->getScopeRestrictedLinkList(
+            $entity->getEntityType(),
+            [
+                GlobalRestriction::TYPE_FORBIDDEN,
+                GlobalRestriction::TYPE_INTERNAL,
+                GlobalRestriction::TYPE_ONLY_ADMIN,
+            ]
+        );
+
+        if ($applyAcl) {
+            if (
+                $entityDefs->hasField($link) &&
+                !$this->aclManager->checkField($user, $entity->getEntityType(), $link)
+            ) {
+                return null;
+            }
+
+            if (in_array($link, $forbiddenLinkList)) {
+                return null;
+            }
+        }
+
+        $related = $this->entityManager
+            ->getRelation($entity, $link)
+            ->findOne();
+
+        if (!$related) {
+            return null;
+        }
+
+        if (
+            $applyAcl &&
+            !$this->aclManager->checkEntityRead($user, $related)
+        ) {
+            return null;
+        }
+
+        $this->serviceContainer
+            ->get($related->getEntityType())
+            ->loadAdditionalFields($related);
+
+        return $related;
+    }
+}
diff --git a/application/Espo/Tools/EmailTemplate/Processor.php b/application/Espo/Tools/EmailTemplate/Processor.php
index 0c1590fe37..80bb80471b 100644
--- a/application/Espo/Tools/EmailTemplate/Processor.php
+++ b/application/Espo/Tools/EmailTemplate/Processor.php
@@ -64,7 +64,8 @@ class Processor
         private FileStorageManager $fileStorageManager,
         private User $user,
         private HtmlizerFactory $htmlizerFactory,
-        private PlaceholdersProvider $placeholdersProvider
+        private PlaceholdersProvider $placeholdersProvider,
+        private EntityMapProvider $entityMapProvider,
     ) {}
 
     public function process(EmailTemplate $template, Params $params, Data $data): Result
@@ -417,6 +418,15 @@ class Processor
             }
         }
 
+        if ($data->getParent()) {
+            $entityHash = array_merge(
+                $entityHash,
+                $this->entityMapProvider->get($data->getParent(), $user, $params->applyAcl())
+            );
+
+            $entityHash[$data->getParent()->getEntityType()] = $data->getParent();
+        }
+
         if ($data->getRelatedId() && $data->getRelatedType()) {
             $related = $this->entityManager->getEntityById($data->getRelatedType(), $data->getRelatedId());
 
diff --git a/schema/metadata/app/emailTemplate.json b/schema/metadata/app/emailTemplate.json
index ccae40d440..585379d62e 100644
--- a/schema/metadata/app/emailTemplate.json
+++ b/schema/metadata/app/emailTemplate.json
@@ -21,6 +21,18 @@
                     }
                 }
             }
+        },
+        "entityLinkMapping": {
+            "description": "EntityType => link mapping. As of v9.2.0.",
+            "type": "object",
+            "additionalProperties": {
+                "type": "object",
+                "additionalProperties": {
+                    "type": "string",
+                    "description": "An entity type name mapped to a link."
+                },
+                "description": "A parent entity type name mapped to EntityType => link map.."
+            }
         }
     }
 }