copy author edges with their times but executing user in automation

graph/src/main/scala/GraphChanges.scala

@@ -11,11 +11,14 @@ case class GraphChanges(
   // we do not really need a connection for deleting (ConnectionId instead), but we want to revert it again.
   delEdges: collection.Set[Edge] = Set.empty
 ) {
-  def withAuthor(userId: UserId, timestamp: EpochMilli = EpochMilli.now): GraphChanges =
+  def withAuthor(userId: UserId, timestamp: EpochMilli = EpochMilli.now): GraphChanges = {
+    val existingAuthors: Set[NodeId] = addEdges.collect { case edge: Edge.Author => edge.nodeId }(breakOut)
     copy(
-      addEdges = addEdges ++
-        addNodes.map(node => Edge.Author(node.id, EdgeData.Author(timestamp), userId))
+      addEdges = addEdges ++ addNodes.flatMap { node =>
+        (if (existingAuthors(node.id)) Set.empty[Edge] else Set[Edge](Edge.Author(node.id, EdgeData.Author(timestamp), userId)))
+      }
     )
+  }
 
   def merge(other: GraphChanges): GraphChanges = {
     GraphChanges.from(

sdk/shared/src/main/scala/EventProcessor.scala

@@ -5,7 +5,7 @@ import monix.reactive.{Observable, OverflowStrategy}
 import monix.reactive.subjects.{PublishSubject, PublishToOneSubject}
 import wust.api.ApiEvent._
 import wust.api._
-import wust.ids.NodeId
+import wust.ids.{NodeId, UserId}
 import wust.graph._
 
 import scala.concurrent.Future
@@ -36,7 +36,7 @@ object EventProcessor {
   //TODO factory and constructor shared responsibility
   def apply(
       eventStream: Observable[Seq[ApiEvent]],
-      enrichChanges: (GraphChanges, Graph) => GraphChanges,
+      enrichChanges: (GraphChanges, UserId, Graph) => GraphChanges,
       sendChange: List[GraphChanges] => Future[Boolean],
       initialAuth: Authentication
   )(implicit scheduler: Scheduler): EventProcessor = {
@@ -62,7 +62,7 @@ object EventProcessor {
 class EventProcessor private (
     eventStream: Observable[Seq[ApiEvent.GraphContent]],
     authEventStream: Observable[Seq[ApiEvent.AuthContent]],
-    enrichChanges: (GraphChanges, Graph) => GraphChanges,
+    enrichChanges: (GraphChanges, UserId, Graph) => GraphChanges,
     sendChange: List[GraphChanges] => Future[Boolean],
     val initialAuth: Authentication
 )(implicit scheduler: Scheduler) {
@@ -92,8 +92,8 @@ class EventProcessor private (
     val sharedRawGraph = rawGraph.share
     val rawGraphWithInit = sharedRawGraph.startWith(Seq(Graph.empty))
 
-    val enrichedChanges = changes.withLatestFrom(rawGraphWithInit) { (changes, graph) =>
-      val newChanges = enrichChanges(changes, graph)
+    val enrichedChanges = changes.withLatestFrom2(currentUser, rawGraphWithInit) { (changes, user, graph) =>
+      val newChanges = enrichChanges(changes, user.id, graph)
       scribe.info(s"Local Graphchanges: ${newChanges.toPrettyString(graph)}")
       newChanges
     }

webApp/src/main/scala/state/GlobalStateFactory.scala

@@ -37,7 +37,7 @@ object GlobalStateFactory {
 
     val eventProcessor = EventProcessor(
       Client.observable.event,
-      (changes, graph) => GraphChangesAutomation.enrich(graph, urlConfig, EmojiReplacer.replaceChangesToColons(changes)).consistent,
+      (changes, userId, graph) => GraphChangesAutomation.enrich(userId, graph, urlConfig, EmojiReplacer.replaceChangesToColons(changes)).consistent,
       Client.api.changeGraph,
       Client.currentAuth
     )

webApp/src/main/scala/state/GraphChangesAutomation.scala

@@ -23,7 +23,7 @@ object GraphChangesAutomation {
 
   // copy the whole subgraph of the templateNode and append it to newNode.
   // templateNode is a placeholder and we want make changes such newNode looks like a copy of templateNode.
-  def copySubGraphOfNode(graph: Graph, newNode: Node, templateNode: Node, newId: NodeId => NodeId = _ => NodeId.fresh, copyTime: EpochMilli = EpochMilli.now): GraphChanges = {
+  def copySubGraphOfNode(userId: UserId, graph: Graph, newNode: Node, templateNode: Node, newId: NodeId => NodeId = _ => NodeId.fresh, copyTime: EpochMilli = EpochMilli.now): GraphChanges = {
     scribe.info(s"Copying sub graph of node $newNode with template $templateNode")
 
     val templateNodeIdx = graph.idToIdxOrThrow(templateNode.id)
@@ -100,10 +100,15 @@ object GraphChangesAutomation {
     // Go through all edges and create new edges pointing to the replacedNodes, so
     // that we copy the edge structure that the template node had.
     graph.edges.foreach {
-      case _: Edge.Author                                                 => () // do not copy authors, we want the new authors of the one who triggered this change.
       case _: Edge.DerivedFromTemplate                                    => () // do not copy derived info, we get new derive infos for new nodes
       case edge: Edge.Automated if edge.templateNodeId == templateNode.id => () // do not copy automation edges of template, otherwise the newNode would become a template.
       case edge: Edge.Child if edge.data.deletedAt.exists(EpochMilli.now.isAfter) => () // do not copy deleted parent edges
+      case edge: Edge.Author                                                 => // need to keep date of authorship, but change author. We will have an author edge for every change that was done to this node
+        // replace node ids to point to our copied nodes
+        replacedNodes.get(edge.nodeId) match {
+          case Some(newSource) => addEdges += edge.copy(nodeId = newSource.id, userId = userId)
+          case None => ()
+        }
       case edge                                                           =>
         // replace node ids to point to our copied nodes
         (replacedNodes.get(edge.sourceId), replacedNodes.get(edge.targetId)) match {
@@ -121,7 +126,7 @@ object GraphChangesAutomation {
   // We get the current graph + the new graph change. For each new parent edge in the graph change,
   // we check if the parent has a template node. If the parent has a template node, we want to
   // append the subgraph (which is spanned from the template node) to the newly inserted child of the parent.
-  def enrich(graph: Graph, viewConfig: Var[UrlConfig], changes: GraphChanges): GraphChanges = {
+  def enrich(userId: UserId, graph: Graph, viewConfig: Var[UrlConfig], changes: GraphChanges): GraphChanges = {
     scribe.info("Check for automation enrichment of graphchanges: " + changes.toPrettyString(graph))
 
     val addNodes = mutable.HashSet.newBuilder[Node]
@@ -153,7 +158,7 @@ object GraphChangesAutomation {
               val templateNode = graph.nodes(templateNodeIdx)
               if (templateNode.role == childNode.role) {
                 scribe.info(s"Found fitting template '$templateNode' for '$childNode'")
-                val changes = copySubGraphOfNode(graph, newNode = childNode, templateNode = templateNode)
+                val changes = copySubGraphOfNode(userId, graph, newNode = childNode, templateNode = templateNode)
                 // if the automated changes re-add the same child edge were are currently replacing, then we want to take the ordering from the new child edge.
                 // so an automated node can be drag/dropped to the correct position.
                 addEdges ++= changes.addEdges.map {

webApp/src/main/scala/views/TableView.scala

@@ -190,7 +190,7 @@ object TableView {
                   // now we add these changes with the template node to a temporary graph, because ChangesAutomation needs the template node in the graph
                   val tmpGraph = state.rawGraph.now applyChanges changes
                   // run automation of this template for each row
-                  propertyGroup.infos.foldLeft[GraphChanges](changes)((changes, info) => changes merge GraphChangesAutomation.copySubGraphOfNode(tmpGraph, info.node, templateNode = templateNode))
+                  propertyGroup.infos.foldLeft[GraphChanges](changes)((changes, info) => changes merge GraphChangesAutomation.copySubGraphOfNode(state.user.now.id, tmpGraph, info.node, templateNode = templateNode))
                 } else propertyGroup.infos.foldLeft[GraphChanges](GraphChanges.empty)((changes, info) => changes merge changesf(info.node.id))
               }, keepPropertyAsDefault),
               dropdownModifier = cls := "top right",

webApp/src/test/scala/GraphChangesAutomationSpec.scala

@@ -22,7 +22,7 @@ class GraphChangesAutomationSpec extends FreeSpec with MustMatchers {
   val copyTime = EpochMilli.now
 
   def copySubGraphOfNode(graph: Graph, newNode: Node, templateNode: Node) = GraphChangesAutomation.copySubGraphOfNode(
-    graph, newNode, templateNode, copyNodeId(_), copyTime
+    freshNodeId(), graph, newNode, templateNode, copyNodeId(_), copyTime
   )
 
   "empty template node" in {