From 7812675babb5fcf9a971981302d7cd9de4f13502 Mon Sep 17 00:00:00 2001
From: Gary Kim <gary@garykim.dev>
Date: Fri, 23 Jul 2021 20:39:40 +0200
Subject: [PATCH] fix: delete indexedDB data on logout

Signed-off-by: Gary Kim <gary@garykim.dev>
---
 lib/AppInfo/Application.php | 20 +++++++++++++++++++-
 src/logout.js               | 26 ++++++++++++++++++++++++++
 webpack.config.js           |  7 ++++---
 3 files changed, 49 insertions(+), 4 deletions(-)
 create mode 100644 src/logout.js

diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 5fd7f6f5..88b4e054 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -25,9 +25,16 @@
 
 namespace OCA\RiotChat\AppInfo;
 
+use OCA\RiotChat\Listener\UserLogoutScriptListener;
 use OCP\AppFramework\App;
+use OCP\AppFramework\Bootstrap\IBootContext;
+use OCP\AppFramework\Bootstrap\IBootstrap;
+use OCP\AppFramework\Bootstrap\IRegistrationContext;
+use OCP\IRequest;
+use OCP\User\Events\BeforeUserLoggedOutEvent;
+use OCP\Util;
 
-class Application extends App {
+class Application extends App implements IBootstrap {
 	public const APP_ID = 'riotchat';
 
 	public const AvailableSettings = [
@@ -54,4 +61,15 @@ public static function AvailableLabs() {
 		// TODO: Remove the labs feature fully
 		return [];
 	}
+
+	public function boot(IBootContext $context): void {
+		$request = $this->getContainer()->get(IRequest::class);
+		// The user is redirected to '/login?clear=1'
+		if ($request->getPathInfo() === '/login') {
+			Util::addScript(self::APP_ID, 'logout');
+		}
+	}
+
+	public function register(IRegistrationContext $context): void {
+	}
 }
diff --git a/src/logout.js b/src/logout.js
new file mode 100644
index 00000000..292876b6
--- /dev/null
+++ b/src/logout.js
@@ -0,0 +1,26 @@
+/*
+ * @copyright Copyright (c) 2021 Gary Kim <gary@garykim.dev>
+ *
+ * @author Gary Kim <gary@garykim.dev>
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+const url = new URL(window.location);
+if (url.searchParams.get('clear') === "1") {
+    window.indexedDB.deleteDatabase('matrix-react-sdk');
+    window.indexedDB.deleteDatabase('matrix-js-sdk:riot-web-sync');
+    window.indexedDB.deleteDatabase('matrix-js-sdk:crypto');
+}
+
diff --git a/webpack.config.js b/webpack.config.js
index 7c4fb7d3..a3c4e305 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -6,7 +6,8 @@ const webpack = require('webpack');
 module.exports = {
     entry: {
         adminSettings: path.join(__dirname, 'src', 'adminSettings.js'),
-		main: path.join(__dirname, 'src', 'main.js'),
+        main: path.join(__dirname, 'src', 'main.js'),
+        logout: path.join(__dirname, 'src', 'logout.js'),
     },
     output: {
         path: path.join(__dirname, 'js'),
@@ -37,10 +38,10 @@ module.exports = {
     },
     plugins: [
         new VueLoaderPlugin(),
-		new webpack.DefinePlugin({
+        new webpack.DefinePlugin({
             RIOT_WEB_HASH: JSON.stringify(execSync('git rev-parse HEAD', { cwd: path.resolve(__dirname, './3rdparty/riot-web') }).toString()),
             RIOT_WEB_VERSION: JSON.stringify(execSync('git describe --exact-match HEAD', { cwd: path.resolve(__dirname, './3rdparty/riot-web') }).toString()),
-		}),
+        }),
     ],
     resolve: {
         extensions: ['.js', '.vue'],