Fix group chat restoration

src/org/thoughtcrime/securesms/loki/LokiGroupChatPoller.kt

@@ -4,8 +4,12 @@ import android.content.Context
 import android.os.Handler
 import android.util.Log
 import org.thoughtcrime.securesms.crypto.IdentityKeyUtil
+import org.thoughtcrime.securesms.database.Address
 import org.thoughtcrime.securesms.database.DatabaseFactory
 import org.thoughtcrime.securesms.jobs.PushDecryptJob
+import org.thoughtcrime.securesms.recipients.Recipient
+import org.thoughtcrime.securesms.sms.OutgoingTextMessage
+import org.thoughtcrime.securesms.util.GroupUtil
 import org.thoughtcrime.securesms.util.TextSecurePreferences
 import org.whispersystems.libsignal.util.guava.Optional
 import org.whispersystems.signalservice.api.messages.SignalServiceContent
@@ -14,20 +18,25 @@ import org.whispersystems.signalservice.api.messages.SignalServiceGroup
 import org.whispersystems.signalservice.api.push.SignalServiceAddress
 import org.whispersystems.signalservice.loki.api.LokiGroupChat
 import org.whispersystems.signalservice.loki.api.LokiGroupChatAPI
+import org.whispersystems.signalservice.loki.api.LokiGroupMessage
 
 class LokiGroupChatPoller(private val context: Context, private val group: LokiGroupChat) {
     private val handler = Handler()
     private var hasStarted = false
 
+    // region Convenience
+    private val userHexEncodedPublicKey = TextSecurePreferences.getLocalNumber(context)
+
     private val api: LokiGroupChatAPI
         get() = {
-            val userHexEncodedPublicKey = TextSecurePreferences.getLocalNumber(context)
             val lokiAPIDatabase = DatabaseFactory.getLokiAPIDatabase(context)
             val lokiUserDatabase = DatabaseFactory.getLokiUserDatabase(context)
             val userPrivateKey = IdentityKeyUtil.getIdentityKeyPair(context).privateKey.serialize()
             LokiGroupChatAPI(userHexEncodedPublicKey, userPrivateKey, lokiAPIDatabase, lokiUserDatabase)
         }()
+    // endregion
 
+    // region Tasks
     private val pollForNewMessagesTask = object : Runnable {
 
         override fun run() {
@@ -51,13 +60,17 @@ class LokiGroupChatPoller(private val context: Context, private val group: LokiG
             handler.postDelayed(this, pollForModerationPermissionInterval)
         }
     }
+    // endregion
 
+    // region Settings
     companion object {
         private val pollForNewMessagesInterval: Long = 4 * 1000
         private val pollForDeletedMessagesInterval: Long = 20 * 1000
         private val pollForModerationPermissionInterval: Long = 10 * 60 * 1000
     }
+    // endregion
 
+    // region Lifecycle
     fun startIfNeeded() {
         if (hasStarted) return
         pollForNewMessagesTask.run()
@@ -72,10 +85,11 @@ class LokiGroupChatPoller(private val context: Context, private val group: LokiG
         handler.removeCallbacks(pollForModerationPermissionTask)
         hasStarted = false
     }
+    // endregion
 
+    // region Polling
     private fun pollForNewMessages() {
-        api.getMessages(group.serverID, group.server).success { messages ->
+        fun processIncomingMessage(message: LokiGroupMessage) {
-            messages.reversed().map { message ->
             val id = group.id.toByteArray()
             val x1 = SignalServiceGroup(SignalServiceGroup.Type.UPDATE, id, null, null, null)
             val x2 = SignalServiceDataMessage(message.timestamp, x1, null, message.body)
@@ -83,6 +97,29 @@ class LokiGroupChatPoller(private val context: Context, private val group: LokiG
             val x3 = SignalServiceContent(x2, senderDisplayName, SignalServiceAddress.DEFAULT_DEVICE_ID, message.timestamp, false)
             PushDecryptJob(context).handleTextMessage(x3, x2, Optional.absent(), Optional.of(message.serverID))
         }
+        fun processOutgoingMessage(message: LokiGroupMessage) {
+            val messageServerID = message.serverID ?: return
+            val lokiMessageDatabase = DatabaseFactory.getLokiMessageDatabase(context)
+            val isDuplicate = lokiMessageDatabase.getMessageID(messageServerID) != null
+            if (isDuplicate) { return }
+            val id = group.id.toByteArray()
+            val smsDatabase = DatabaseFactory.getSmsDatabase(context)
+            val recipient = Recipient.from(context, Address.fromSerialized(GroupUtil.getEncodedId(id, false)), false)
+            val signalMessage = OutgoingTextMessage(recipient, message.body, 0, 0)
+            val threadID = DatabaseFactory.getThreadDatabase(context).getThreadIdFor(recipient)
+            val messageID = smsDatabase.insertMessageOutbox(threadID, signalMessage, false, System.currentTimeMillis(), null)
+            smsDatabase.markAsSent(messageID, true)
+            smsDatabase.markUnidentified(messageID, false)
+            lokiMessageDatabase.setServerID(messageID, messageServerID)
+        }
+        api.getMessages(group.serverID, group.server).success { messages ->
+            messages.reversed().forEach { message ->
+                if (message.hexEncodedPublicKey != userHexEncodedPublicKey) {
+                    processIncomingMessage(message)
+                } else {
+                    processOutgoingMessage(message)
+                }
+            }
         }.fail {
             Log.d("Loki", "Failed to get messages for group chat with ID: ${group.serverID} on server: ${group.server}.")
         }
@@ -109,4 +146,5 @@ class LokiGroupChatPoller(private val context: Context, private val group: LokiG
             lokiAPIDatabase.setIsModerator(group.serverID, group.server, isModerator)
         }
     }
+    // endregion
 }

src/org/thoughtcrime/securesms/loki/LokiMessageDatabase.kt

@@ -18,6 +18,8 @@ class LokiMessageDatabase(context: Context, helper: SQLCipherOpenHelper) : Datab
         @JvmStatic val createTableCommand = "CREATE TABLE $tableName ($messageID INTEGER PRIMARY KEY, $serverID INTEGER DEFAULT 0, $friendRequestStatus INTEGER DEFAULT 0);"
     }
 
+    // TODO: Move the server ID stuff to LokiAPIDatabase?
+
     fun getServerID(messageID: Long): Long? {
         val database = databaseHelper.readableDatabase
         return database.get(tableName, "${Companion.messageID} = ?", arrayOf( messageID.toString() )) { cursor ->