When adding test data, hack GroupCount timestamp

Because the MessageTracker in briar initializes the GroupCount timestamp
to the current time when the contact is being added, we cannot have
realistic test data in the database where the GroupCount timestamp
matches that of the last message in the chat history. This is a dirty
workaround to make this possible.

src/test/kotlin/org/briarproject/briar/desktop/GroupCountHelper.kt

+package org.briarproject.briar.desktop
+
+import org.briarproject.bramble.api.FormatException
+import org.briarproject.bramble.api.client.ClientHelper
+import org.briarproject.bramble.api.contact.ContactManager
+import org.briarproject.bramble.api.data.BdfDictionary
+import org.briarproject.bramble.api.data.BdfEntry
+import org.briarproject.bramble.api.db.DatabaseComponent
+import org.briarproject.bramble.api.db.DbException
+import org.briarproject.bramble.api.db.Transaction
+import org.briarproject.bramble.api.sync.GroupId
+import org.briarproject.briar.api.client.MessageTracker.GroupCount
+import org.briarproject.briar.api.messaging.MessagingManager
+import org.briarproject.briar.client.MessageTrackerConstants
+import java.lang.Long.max
+
+object GroupCountHelper {
+
+    internal fun resetGroupTimestamps(
+        contactManager: ContactManager,
+        messagingManager: MessagingManager,
+        db: DatabaseComponent,
+        clientHelper: ClientHelper,
+    ) {
+        db.transaction<RuntimeException>(false) { txn ->
+            val contacts = contactManager.getContacts(txn)
+            for (contact in contacts) {
+                val gc = messagingManager.getGroupCount(txn, contact.id)
+                val headers = messagingManager.getMessageHeaders(txn, contact.id)
+                if (headers.isEmpty()) {
+                    continue
+                }
+                val groupId = headers.iterator().next().groupId
+                var latest = 0L
+                for (header in headers) {
+                    latest = max(latest, header.timestamp)
+                }
+                val copy = GroupCount(gc.msgCount, gc.unreadCount, latest)
+                storeGroupCount(clientHelper, txn, groupId, copy)
+            }
+        }
+    }
+
+    @Throws(DbException::class)
+    private fun storeGroupCount(clientHelper: ClientHelper, txn: Transaction, g: GroupId, c: GroupCount) {
+        try {
+            val d = BdfDictionary.of(
+                BdfEntry(MessageTrackerConstants.GROUP_KEY_MSG_COUNT, c.msgCount),
+                BdfEntry(MessageTrackerConstants.GROUP_KEY_UNREAD_COUNT, c.unreadCount),
+                BdfEntry(MessageTrackerConstants.GROUP_KEY_LATEST_MSG, c.latestMsgTime)
+            )
+            clientHelper.mergeGroupMetadata(txn, g, d)
+        } catch (e: FormatException) {
+            throw DbException(e)
+        }
+    }
+}

src/test/kotlin/org/briarproject/briar/desktop/testdata/DeterministicTestDataCreatorImpl.kt

@@ -2,13 +2,16 @@ package org.briarproject.briar.desktop.testdata
 
 import mu.KotlinLogging
 import org.briarproject.bramble.api.FormatException
+import org.briarproject.bramble.api.client.ClientHelper
 import org.briarproject.bramble.api.contact.Contact
 import org.briarproject.bramble.api.contact.ContactId
 import org.briarproject.bramble.api.contact.ContactManager
+import org.briarproject.bramble.api.contact.event.ContactAddedEvent
 import org.briarproject.bramble.api.crypto.SecretKey
 import org.briarproject.bramble.api.db.DatabaseComponent
 import org.briarproject.bramble.api.db.DbException
 import org.briarproject.bramble.api.db.Transaction
+import org.briarproject.bramble.api.event.EventBus
 import org.briarproject.bramble.api.identity.AuthorFactory
 import org.briarproject.bramble.api.identity.AuthorId
 import org.briarproject.bramble.api.identity.IdentityManager
@@ -28,6 +31,7 @@ import org.briarproject.bramble.api.system.Clock
 import org.briarproject.briar.api.autodelete.AutoDeleteConstants
 import org.briarproject.briar.api.avatar.AvatarManager
 import org.briarproject.briar.api.avatar.AvatarMessageEncoder
+import org.briarproject.briar.api.conversation.ConversationManager
 import org.briarproject.briar.api.messaging.MessagingManager
 import org.briarproject.briar.api.messaging.PrivateMessageFactory
 import org.briarproject.briar.api.privategroup.GroupMessageFactory
@@ -35,6 +39,7 @@ import org.briarproject.briar.api.privategroup.PrivateGroup
 import org.briarproject.briar.api.privategroup.PrivateGroupFactory
 import org.briarproject.briar.api.privategroup.PrivateGroupManager
 import org.briarproject.briar.api.test.TestAvatarCreator
+import org.briarproject.briar.desktop.GroupCountHelper.resetGroupTimestamps
 import java.io.IOException
 import java.io.InputStream
 import java.time.ZoneOffset
@@ -56,9 +61,12 @@ class DeterministicTestDataCreatorImpl @Inject internal constructor(
     private val privateGroupManager: PrivateGroupManager,
     private val privateGroupFactory: PrivateGroupFactory,
     private val transportPropertyManager: TransportPropertyManager,
+    private val conversationManager: ConversationManager,
     private val messagingManager: MessagingManager,
     private val testAvatarCreator: TestAvatarCreator,
     private val avatarMessageEncoder: AvatarMessageEncoder,
+    private val clientHelper: ClientHelper,
+    private val eventBus: EventBus,
     @field:IoExecutor @param:IoExecutor private val ioExecutor: Executor
 ) : DeterministicTestDataCreator {
 
@@ -103,6 +111,10 @@ class DeterministicTestDataCreatorImpl @Inject internal constructor(
         for (privateGroup in privateGroups) {
             createRandomPrivateGroupMessages(privateGroup, contacts, numPrivateGroupPosts)
         }
+
+        resetGroupTimestamps(contactManager, messagingManager, db, clientHelper)
+        // HACK: broadcast  contact added event so that the view model reloads the contact list
+        eventBus.broadcast(ContactAddedEvent(null, true))
     }
 
     @Throws(DbException::class)