From e7171830a28ac9506e427534803261013c84db16 Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Wed, 3 Jun 2020 19:19:49 +0200
Subject: Log viewer access as download

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 lib/AppInfo/Application.php | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 787ff8b..a5edf02 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -23,7 +23,10 @@ namespace OCA\FilesDownloadActivity\AppInfo;
 
 use OCA\FilesDownloadActivity\Activity\Listener;
 use OCP\AppFramework\App;
+use OCP\Files\File;
+use OCP\IPreview;
 use OCP\Util;
+use Symfony\Component\EventDispatcher\GenericEvent;
 
 class Application extends App {
 
@@ -36,6 +39,14 @@ class Application extends App {
 	 */
 	public function register() {
 		Util::connectHook('OC_Filesystem', 'read', $this, 'listenReadFile');
+
+		$eventDispatcher = $this->getContainer()->getServer()->getEventDispatcher();
+		$eventDispatcher->addListener(
+			IPreview::EVENT,
+			function (GenericEvent $event) {
+				$this->listenPreviewFile($event);
+			}
+		);
 	}
 
 	/**
@@ -46,4 +57,33 @@ class Application extends App {
 		$hooks = $this->getContainer()->query(Listener::class);
 		$hooks->readFile($params['path']);
 	}
+
+	/**
+	 * @param GenericEvent $event
+	 */
+	public function listenPreviewFile(GenericEvent $event) {
+		$details = $event->getArguments();
+		if ($details['width'] <= 150 && $details['height'] <= 150) {
+			// Ignore mini preview, but we need "big" previews because of the viewer app.
+			return;
+		}
+
+		/** @var File $file */
+		$file = $event->getSubject();
+
+		if (substr_count($file->getPath(), '/') < 3) {
+			// Invalid path
+			return;
+		}
+
+		[,, $filesApp, $path] = explode('/', $file->getPath(), 4);
+
+		if ($filesApp !== 'files') {
+			return;
+		}
+
+		/** @var Listener $hooks */
+		$hooks = $this->getContainer()->query(Listener::class);
+		$hooks->readFile($path);
+	}
 }
-- 
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