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From b85cf34298c274b5f16cb6c2aead7b87f0dabbb8 Mon Sep 17 00:00:00 2001
From: Dan Leinir Turthra Jensen <admin@leinir.dk>
Date: Wed, 9 Feb 2022 09:23:50 +0000
Subject: [PATCH] Only trust the expiration date if it's less than 24 hours

---
 attica-kde/kdeplugin/kdeplatformdependent.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/attica-kde/kdeplugin/kdeplatformdependent.cpp b/attica-kde/kdeplugin/kdeplatformdependent.cpp
index fbc15ec4e..3cad87b36 100644
--- a/attica-kde/kdeplugin/kdeplatformdependent.cpp
+++ b/attica-kde/kdeplugin/kdeplatformdependent.cpp
@@ -125,6 +125,26 @@ QNetworkRequest KdePlatformDependent::addOAuthToRequest(const QNetworkRequest &r
         const QString bearer = bearer_format.arg(token);
         notConstReq.setRawHeader("Authorization", bearer.toUtf8());
     }
+    notConstReq.setAttribute(QNetworkRequest::Http2AllowedAttribute, true);
+
+    // Add cache preference in a granular fashion (we will almost certainly want more of these, but...)
+    static const QStringList preferCacheEndpoints{QLatin1String{"/content/categories"}};
+    for (const QString &endpoint : preferCacheEndpoints) {
+        if (notConstReq.url().toString().endsWith(endpoint)) {
+            QNetworkCacheMetaData cacheMeta{m_accessManager->cache()->metaData(notConstReq.url())};
+            if (cacheMeta.isValid()) {
+                // If the expiration date is valid, but longer than 24 hours, don't trust that things
+                // haven't changed and check first, otherwise just use the cached version to relieve
+                // server strain and reduce network traffic.
+                const QDateTime tomorrow{QDateTime::currentDateTime().addDays(1)};
+                if (cacheMeta.expirationDate().isValid() && cacheMeta.expirationDate() < tomorrow) {
+                    notConstReq.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferCache);
+                }
+            }
+            break;
+        }
+    }
+
     return notConstReq;
 }

-- 
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