From 79c205becaa03a7ca3a8f73f5edbcaba5d0af75a Mon Sep 17 00:00:00 2001
From: Antipkin-A <Artem.Antipkin@onlyoffice.com>
Date: Mon, 19 Oct 2020 12:22:48 +0300
Subject: [PATCH] save version author

---
 controller/callbackcontroller.php |  4 +++
 lib/fileversions.php              | 48 +++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/controller/callbackcontroller.php b/controller/callbackcontroller.php
index 3117100..a2d89d5 100644
--- a/controller/callbackcontroller.php
+++ b/controller/callbackcontroller.php
@@ -547,6 +547,10 @@ class CallbackController extends Controller {
                         FileVersions::saveHistory($file->getFileInfo(), $history, $changes, $prevVersion);
                     }
 
+                    if (!empty($user)) {
+                        FileVersions::saveAuthor($file->getFileInfo(), $user);
+                    }
+
                     $result = 0;
                 } catch (\Exception $e) {
                     $this->logger->logException($e, ["message" => "Track: $fileId status $status error", "app" => $this->appName]);
diff --git a/lib/fileversions.php b/lib/fileversions.php
index 2de1308..cc354f9 100644
--- a/lib/fileversions.php
+++ b/lib/fileversions.php
@@ -23,6 +23,7 @@ use OC\Files\Node\File;
 use OC\Files\View;
 
 use OCP\Files\FileInfo;
+use OCP\IUser;
 
 /**
  * File versions
@@ -52,6 +53,13 @@ class FileVersions {
      */
     private static $historyExt = ".json";
 
+    /**
+     * File name contain author
+     *
+     * @var string
+     */
+    private static $authorExt = "_author.json";
+
     /**
      * Split file path and version id
      *
@@ -327,4 +335,44 @@ class FileVersions {
             $logger->debug("deleteVersion $changesPath", ["app" => self::$appName]);
         }
     }
+
+    /**
+     * Save file author
+     *
+     * @param FileInfo $fileInfo - file info
+     * @param IUser $author - version author
+     */
+    public static function saveAuthor($fileInfo, $author) {
+        $logger = \OC::$server->getLogger();
+
+        if ($fileInfo === null || $author === null) {
+            return;
+        }
+
+        $owner = $fileInfo->getOwner();
+        if ($owner === null) {
+            return;
+        }
+
+        $ownerId = $owner->getUID();
+        $fileId = $fileInfo->getId();
+        $versionId = $fileInfo->getMtime();
+
+        list ($view, $path) = self::getView($ownerId, $fileId, true);
+
+        try {
+            $authorPath = $path . "/" . $versionId . self::$authorExt;
+            $view->touch($authorPath);
+
+            $authorData = [
+                "id" => $author->getUID(),
+                "name" => $author->getDisplayName()
+            ];
+            $view->file_put_contents($authorPath, json_encode($authorData));
+
+            $logger->debug("saveAuthor: $fileId for $ownerId stored author $authorPath", ["app" => self::$appName]);
+        } catch (\Exception $e) {
+            $logger->logException($e, ["message" => "saveAuthor: save $fileId author error", "app" => self::$appName]);
+        }
+    }
 }
\ No newline at end of file