refactor: process the configs for libsession directly as the byte arrays, pull out the duplicate removal logic and envelope / unwrap from SnodeAPI

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -442,7 +442,7 @@ public class ApplicationContext extends Application implements DefaultLifecycleO
             poller.setUserPublicKey(userPublicKey);
             return;
         }
-        poller = new Poller(configFactory, new Timer());
+        poller = new Poller(configFactory);
     }
 
     public void startPollingIfNeeded() {

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/pollers/Poller.kt

@@ -19,12 +19,11 @@ import org.session.libsession.messaging.MessagingModuleConfiguration
 import org.session.libsession.messaging.jobs.BatchMessageReceiveJob
 import org.session.libsession.messaging.jobs.JobQueue
 import org.session.libsession.messaging.jobs.MessageReceiveParameters
-import org.session.libsession.messaging.messages.control.SharedConfigurationMessage
-import org.session.libsession.messaging.sending_receiving.MessageReceiver
 import org.session.libsession.snode.RawResponse
 import org.session.libsession.snode.SnodeAPI
 import org.session.libsession.snode.SnodeModule
 import org.session.libsession.utilities.ConfigFactoryProtocol
+import org.session.libsignal.utilities.Base64
 import org.session.libsignal.utilities.Log
 import org.session.libsignal.utilities.Namespace
 import org.session.libsignal.utilities.Snode
@@ -35,7 +34,7 @@ import kotlin.time.Duration.Companion.days
 
 private class PromiseCanceledException : Exception("Promise canceled.")
 
-class Poller(private val configFactory: ConfigFactoryProtocol, debounceTimer: Timer) {
+class Poller(private val configFactory: ConfigFactoryProtocol) {
     var userPublicKey = MessagingModuleConfiguration.shared.storage.getUserPublicKey() ?: ""
     private var hasStarted: Boolean = false
     private val usedSnodes: MutableSet<Snode> = mutableSetOf()
@@ -126,34 +125,26 @@ class Poller(private val configFactory: ConfigFactoryProtocol, debounceTimer: Ti
     private fun processConfig(snode: Snode, rawMessages: RawResponse, namespace: Int, forConfigObject: ConfigBase?) {
         if (forConfigObject == null) return
 
-        val messages = SnodeAPI.parseRawMessagesResponse(
-            rawMessages,
-            snode,
-            userPublicKey,
-            namespace,
-            updateLatestHash = true,
-            updateStoredHashes = true,
-        )
+        val messages = rawMessages["messages"] as? List<*>
+        val processed = if (messages != null && messages.isNotEmpty()) {
+            SnodeAPI.updateLastMessageHashValueIfPossible(snode, userPublicKey, messages, namespace)
+            SnodeAPI.removeDuplicates(userPublicKey, messages, namespace, true).mapNotNull { messageBody ->
+                val rawMessageAsJSON = messageBody as? Map<*, *> ?: return@mapNotNull null
+                val hashValue = rawMessageAsJSON["hash"] as? String ?: return@mapNotNull null
+                val b64EncodedBody = rawMessageAsJSON["data"] as? String ?: return@mapNotNull null
+                val timestamp = rawMessageAsJSON["t"] as? Long ?: SnodeAPI.nowWithOffset
+                val body = Base64.decode(b64EncodedBody)
+                Triple(body, hashValue, timestamp)
+            }
+        } else emptyList()
 
-        if (messages.isEmpty()) {
-            // no new messages to process
-            return
-        }
+        if (processed.isEmpty()) return
 
         var latestMessageTimestamp: Long? = null
-        messages.forEach { (envelope, hash) ->
+        processed.forEach { (body, hash, timestamp) ->
             try {
-                val (message, _) = MessageReceiver.parse(data = envelope.toByteArray(),
-                    // assume no groups in personal poller messages
-                    openGroupServerID = null, currentClosedGroups = emptySet()
-                )
-                // sanity checks
-                if (message !is SharedConfigurationMessage) {
-                    Log.w("Loki", "shared config message handled in configs wasn't SharedConfigurationMessage but was ${message.javaClass.simpleName}")
-                    return@forEach
-                }
-                forConfigObject.merge(hash!! to message.data)
-                latestMessageTimestamp = if ((message.sentTimestamp ?: 0L) > (latestMessageTimestamp ?: 0L)) { message.sentTimestamp } else { latestMessageTimestamp }
+                forConfigObject.merge(hash to body)
+                latestMessageTimestamp = if (timestamp > (latestMessageTimestamp ?: 0L)) { timestamp } else { latestMessageTimestamp }
             } catch (e: Exception) {
                 Log.e("Loki", e)
             }

libsession/src/main/java/org/session/libsession/snode/SnodeAPI.kt

@@ -872,7 +872,7 @@ object SnodeAPI {
         }
     }
 
-    private fun updateLastMessageHashValueIfPossible(snode: Snode, publicKey: String, rawMessages: List<*>, namespace: Int) {
+    fun updateLastMessageHashValueIfPossible(snode: Snode, publicKey: String, rawMessages: List<*>, namespace: Int) {
         val lastMessageAsJSON = rawMessages.lastOrNull() as? Map<*, *>
         val hashValue = lastMessageAsJSON?.get("hash") as? String
         if (hashValue != null) {
@@ -882,7 +882,7 @@ object SnodeAPI {
         }
     }
 
-    private fun removeDuplicates(publicKey: String, rawMessages: List<*>, namespace: Int, updateStoredHashes: Boolean): List<*> {
+    fun removeDuplicates(publicKey: String, rawMessages: List<*>, namespace: Int, updateStoredHashes: Boolean): List<*> {
         val originalMessageHashValues = database.getReceivedMessageHashValues(publicKey, namespace)?.toMutableSet() ?: mutableSetOf()
         val receivedMessageHashValues = originalMessageHashValues.toMutableSet()
         val result = rawMessages.filter { rawMessage ->