From ad6d88443746b2a0604578822354967dc465da2d Mon Sep 17 00:00:00 2001
From: Ming Tsay <mt@mingtsay.tw>
Date: Sun, 27 Aug 2023 22:55:49 +0800
Subject: [PATCH] clear cache of Me when logout

---
 app/App.php        |  5 +++--
 app/Redis.php      | 10 ++++++++++
 webroot/logout.php |  1 +
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/app/App.php b/app/App.php
index f05f3ff..61ce698 100644
--- a/app/App.php
+++ b/app/App.php
@@ -64,6 +64,7 @@ class App
 
     public static function unsetU(): void
     {
+        Redis::unsetMe($_COOKIE['u'] ?? '');
         try {
             setcookie('u', null, [
                 'expires' => time() - 3600,
@@ -128,8 +129,8 @@ HTML,
         try {
             $u = static::getU();
             if ($u === null) return null;
-            $cachedMe = Redis::getCachedMe($_COOKIE['u']);
-            if ($cachedMe === null) return Redis::cacheMe($_COOKIE['u'], Auth::getMe($u));
+            $cachedMe = Redis::getCachedMe($_COOKIE['u'] ?? '');
+            if ($cachedMe === null) return Redis::cacheMe($_COOKIE['u'] ?? '', Auth::getMe($u));
             return $cachedMe;
         } catch (Exception) {
             error_log('Failed to getMe.');
diff --git a/app/Redis.php b/app/Redis.php
index 5981b3c..f2c4f0b 100644
--- a/app/Redis.php
+++ b/app/Redis.php
@@ -51,4 +51,14 @@ class Redis
             return null;
         }
     }
+
+    public static function unsetMe(string $u): void
+    {
+        try {
+            $redis = static::connect();
+            $redis->unlink(static::getKey($u));
+        } catch (\RedisException $e) {
+            trigger_error($e->getMessage());
+        }
+    }
 }
diff --git a/webroot/logout.php b/webroot/logout.php
index 1b58474..b546da5 100644
--- a/webroot/logout.php
+++ b/webroot/logout.php
@@ -1,6 +1,7 @@
 <?php
 
 use MingTsay\Akanyan\App;
+use MingTsay\Akanyan\Redis;
 
 require_once __DIR__ . '/../vendor/autoload.php';