immich improvements

src/immichpathtraverser.cpp

@@ -1,6 +1,9 @@
 #include "immichpathtraverser.h"
 #include "logger.h"
 #include <QDateTime>
+#include <QFile>
+#include <QFileInfo>
+#include <QSaveFile>
 
 ImmichPathTraverser::ImmichPathTraverser(const ImmichConfig &configIn)
   : PathTraverser(""),
@@ -17,6 +20,7 @@ void ImmichPathTraverser::loadAssets()
 {
   assetIds.clear();
   assetNames.clear();
+  assetDateTimes.clear();
   QVector<ImmichAsset> assets = client.fetchAssets();
   for (const auto &asset : assets)
   {
@@ -24,6 +28,8 @@ void ImmichPathTraverser::loadAssets()
       continue;
     assetIds.append(asset.id);
     assetNames.insert(asset.id, asset.originalFileName);
+    if (!asset.exifDateTime.isEmpty())
+      assetDateTimes.insert(asset.id, asset.exifDateTime);
   }
   Log("Immich assets loaded: ", assetIds.size());
   lastRefresh = QDateTime::currentDateTime();
@@ -44,6 +50,12 @@ const std::string ImmichPathTraverser::getImagePath(const std::string image) con
   QString assetId = QString::fromStdString(image);
   QString name = assetNames.value(assetId);
   QString path = cache.getCachedPath(assetId, name, client);
+  if (!path.isEmpty())
+  {
+    QString dateTime = assetDateTimes.value(assetId);
+    if (!dateTime.isEmpty())
+      writeExifSidecar(path, dateTime);
+  }
   return path.toStdString();
 }
 
@@ -66,3 +78,29 @@ bool ImmichPathTraverser::shouldReloadImages() const
 {
   return refreshDue();
 }
+
+void ImmichPathTraverser::writeExifSidecar(const QString &imagePath, const QString &dateTime) const
+{
+  if (imagePath.isEmpty() || dateTime.isEmpty())
+    return;
+
+  QString sidecarPath = imagePath + ".exif";
+  QFileInfo info(sidecarPath);
+  if (info.exists())
+  {
+    QFile existing(sidecarPath);
+    if (existing.open(QIODevice::ReadOnly | QIODevice::Text))
+    {
+      QString current = QString::fromUtf8(existing.readAll()).trimmed();
+      existing.close();
+      if (current == dateTime.trimmed())
+        return;
+    }
+  }
+
+  QSaveFile file(sidecarPath);
+  if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
+    return;
+  file.write(dateTime.trimmed().toUtf8());
+  file.commit();
+}