Extend backend to pass ExternalPartyConfigState in choice context

[ci]

Signed-off-by: Moritz Kiefer <moritz.kiefer@purelyfunctional.org>

Author: cocreature

apps/common/src/main/scala/org/lfdecentralizedtrust/splice/store/ExternalPartyConfigStateStore.scala

@@ -0,0 +1,49 @@
+// Copyright (c) 2024 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package org.lfdecentralizedtrust.splice.store
+
+import org.lfdecentralizedtrust.splice.codegen.java.splice.externalpartyconfigstate.ExternalPartyConfigState
+import org.lfdecentralizedtrust.splice.util.Contract
+import com.digitalasset.canton.logging.pretty.{Pretty, PrettyPrinting}
+import com.digitalasset.canton.tracing.TraceContext
+
+import scala.concurrent.{ExecutionContext, Future}
+
+trait ExternalPartyConfigStateStore extends AppStore {
+
+  def lookupExternalPartyConfigStatesPair()(implicit
+      ec: ExecutionContext,
+      tc: TraceContext,
+  ): Future[Option[ExternalPartyConfigStateStore.ExternalPartyConfigStatePair]] =
+    for {
+      configStates <- multiDomainAcsStore.listContracts(
+        ExternalPartyConfigState.COMPANION
+      )
+    } yield for {
+      Seq(oldest, newest) <- Some(
+        configStates
+          .sortBy(_.payload.targetArchiveAfter)
+      )
+    } yield ExternalPartyConfigStateStore.ExternalPartyConfigStatePair(
+      oldest = oldest.contract,
+      newest = newest.contract,
+    )
+
+  def lookupLatestExternalPartyConfigState()(implicit ec: ExecutionContext, tc: TraceContext): Future[Option[Contract[ExternalPartyConfigState.ContractId, ExternalPartyConfigState]]] =
+    lookupExternalPartyConfigStatesPair().map(_.map(_.newest))
+}
+
+object ExternalPartyConfigStateStore {
+  case class ExternalPartyConfigStatePair(
+      oldest: Contract[ExternalPartyConfigState.ContractId, ExternalPartyConfigState],
+      newest: Contract[ExternalPartyConfigState.ContractId, ExternalPartyConfigState],
+  ) extends PrettyPrinting {
+    override def pretty: Pretty[this.type] =
+      prettyOfClass(
+        param("oldest", _.oldest),
+        param("newest", _.newest),
+      )
+    }
+
+}

apps/scan/src/main/scala/org/lfdecentralizedtrust/splice/scan/admin/http/HttpTokenStandardTransferInstructionHandler.scala

@@ -174,6 +174,8 @@ class HttpTokenStandardTransferInstructionHandler(
               .asRuntimeException()
           )
         )
+      // TODO(#3630) Don't include amulet rules and newest open round when informees all have vetted the newest version.
+      externalPartyConfigStateO <- store.lookupLatestExternalPartyConfigState()
     } yield {
       val choiceContextBuilder = new ChoiceContextBuilder(
         AmuletConfigSchedule(amuletRules.payload.configSchedule)
@@ -187,7 +189,7 @@ class HttpTokenStandardTransferInstructionHandler(
         choiceContextBuilder.addContracts(
           "amulet-rules" -> amuletRules,
           "open-round" -> newestOpenRound.contract,
-        ),
+        ).addOptionalContract("external-party-config-state" -> externalPartyConfigStateO),
         newestOpenRound.contract.payload,
       )
     }

apps/scan/src/main/scala/org/lfdecentralizedtrust/splice/scan/store/ScanStore.scala

@@ -34,6 +34,7 @@ import org.lfdecentralizedtrust.splice.store.{
   AppStore,
   DsoRulesStore,
   Limit,
+  ExternalPartyConfigStateStore,
   MiningRoundsStore,
   MultiDomainAcsStore,
   PageLimit,
@@ -57,7 +58,8 @@ trait ScanStore
     with PackageIdResolver.HasAmuletRules
     with DsoRulesStore
     with MiningRoundsStore
-    with VotesStore {
+    with VotesStore
+    with ExternalPartyConfigStateStore {
 
   def aggregate()(implicit
       tc: TraceContext
@@ -520,6 +522,13 @@ object ScanStore {
               Some(Timestamp.assertFromInstant(contract.payload.transfer.executeBefore)),
           )
         },
+        mkFilter(splice.externalpartyconfigstate.ExternalPartyConfigState.COMPANION)(co =>
+          co.payload.dso == dso
+        ) { contract =>
+          ScanAcsStoreRowData(
+            contract = contract,
+          )
+        }
       ),
     )
   }