fix: only evict actual meta during automatic server switching

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

Author: Octol1ttle

launcher/PineconeNetworkCheck.cpp

@@ -94,7 +94,7 @@ void PineconeNetworkCheck::finished()
         { Result::UseOldFallback, "https://elyprismlauncher.github.io/meta/v1/" },
     };
     if (handleUrlOverride("MetaURLOverride", metaUrls)) {
-        if (!APPLICATION->metacache()->evictAll()) {
+        if (!APPLICATION->metacache()->softEvict()) {
             qWarning() << "Could not evict metacache during automatic meta switch";
         }
         APPLICATION->metacache()->SaveNow();

launcher/net/HttpMetaCache.cpp

@@ -187,6 +187,17 @@ auto HttpMetaCache::evictAll() -> bool
     return ret;
 }
 
+bool HttpMetaCache::softEvict()
+{
+    auto& [base_path, entry_list] = m_entries["meta"];
+    for (const MetaEntryPtr& entry : entry_list) {
+        if (!evictEntry(entry))
+            qCWarning(taskHttpMetaCacheLogC) << "Unexpected missing cache entry" << entry->m_basePath;
+    }
+    entry_list.clear();
+    return FS::deletePath(base_path);
+}
+
 auto HttpMetaCache::staleEntry(QString base, QString resource_path) -> MetaEntryPtr
 {
     auto foo = new MetaEntry();

launcher/net/HttpMetaCache.h

@@ -115,6 +115,9 @@ class HttpMetaCache : public QObject {
     auto evictEntry(MetaEntryPtr entry) -> bool;
     bool evictAll();
 
+    // evict meta only
+    bool softEvict();
+
     void addBase(QString base, QString base_root);
 
     // (re)start a timer that calls SaveNow later.