From 2ac6d39ae84913ed461696626a96425f6dc3f98b Mon Sep 17 00:00:00 2001
From: Alexander Bruy <alexander.bruy@gmail.com>
Date: Mon, 11 Nov 2024 20:07:13 +0000
Subject: [PATCH] allow to save metadata as default in copy and apply metadata
 algorithms

---
 .../processing/qgsmetadataalgorithms.cpp      | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/analysis/processing/qgsmetadataalgorithms.cpp b/src/analysis/processing/qgsmetadataalgorithms.cpp
index 14fb4c677654..94cc78a96f02 100644
--- a/src/analysis/processing/qgsmetadataalgorithms.cpp
+++ b/src/analysis/processing/qgsmetadataalgorithms.cpp
@@ -58,6 +58,7 @@ void QgsCopyLayerMetadataAlgorithm::initAlgorithm( const QVariantMap & )
 {
   addParameter( new QgsProcessingParameterMapLayer( QStringLiteral( "INPUT" ), QObject::tr( "Source layer" ) ) );
   addParameter( new QgsProcessingParameterMapLayer( QStringLiteral( "TARGET" ), QObject::tr( "Target layer" ) ) );
+  addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "DEFAULT" ), QObject::tr( "Save metadata as default" ), false ) );
   addOutput( new QgsProcessingOutputMapLayer( QStringLiteral( "OUTPUT" ), QObject::tr( "Updated layer" ) ) );
 }
 
@@ -65,6 +66,7 @@ bool QgsCopyLayerMetadataAlgorithm::prepareAlgorithm( const QVariantMap &paramet
 {
   QgsMapLayer *inputLayer = parameterAsLayer( parameters, QStringLiteral( "INPUT" ), context );
   QgsMapLayer *targetLayer = parameterAsLayer( parameters, QStringLiteral( "TARGET" ), context );
+  const bool saveAsDefault = parameterAsBool( parameters, QStringLiteral( "DEFAULT" ), context );
 
   if ( !inputLayer )
     throw QgsProcessingException( QObject::tr( "Invalid input layer" ) );
@@ -76,6 +78,15 @@ bool QgsCopyLayerMetadataAlgorithm::prepareAlgorithm( const QVariantMap &paramet
 
   QgsLayerMetadata *metadata = inputLayer->metadata().clone();
   targetLayer->setMetadata( *metadata );
+  if ( saveAsDefault )
+  {
+    bool ok;
+    targetLayer->saveDefaultMetadata( ok );
+    if ( !ok )
+    {
+      throw QgsProcessingException( QObject::tr( "Failed to save metadata as default metadata." ) );
+    }
+  }
   return true;
 }
 
@@ -130,6 +141,7 @@ void QgsApplyLayerMetadataAlgorithm::initAlgorithm( const QVariantMap & )
 {
   addParameter( new QgsProcessingParameterMapLayer( QStringLiteral( "INPUT" ), QObject::tr( "Layer" ) ) );
   addParameter( new QgsProcessingParameterFile( QStringLiteral( "METADATA" ), QObject::tr( "Metadata file" ), Qgis::ProcessingFileParameterBehavior::File, QStringLiteral( "qmd" ) ) );
+  addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "DEFAULT" ), QObject::tr( "Save metadata as default" ), false ) );
   addOutput( new QgsProcessingOutputMapLayer( QStringLiteral( "OUTPUT" ), QObject::tr( "Updated" ) ) );
 }
 
@@ -137,6 +149,7 @@ bool QgsApplyLayerMetadataAlgorithm::prepareAlgorithm( const QVariantMap &parame
 {
   QgsMapLayer *layer = parameterAsLayer( parameters, QStringLiteral( "INPUT" ), context );
   const QString metadata = parameterAsFile( parameters, QStringLiteral( "METADATA" ), context );
+  const bool saveAsDefault = parameterAsBool( parameters, QStringLiteral( "DEFAULT" ), context );
 
   if ( !layer )
     throw QgsProcessingException( QObject::tr( "Invalid input layer" ) );
@@ -150,6 +163,16 @@ bool QgsApplyLayerMetadataAlgorithm::prepareAlgorithm( const QVariantMap &parame
     throw QgsProcessingException( QObject::tr( "Failed to apply metadata. Error: %1" ).arg( msg ) );
   }
 
+  if ( saveAsDefault )
+  {
+    bool ok;
+    layer->saveDefaultMetadata( ok );
+    if ( !ok )
+    {
+      throw QgsProcessingException( QObject::tr( "Failed to save metadata as default metadata." ) );
+    }
+  }
+
   return true;
 }