fix: Improve performance list method

library/src/androidTest/java/org/xmtp/android/library/ConversationsTest.kt

@@ -20,6 +20,7 @@ import org.xmtp.android.library.messages.createDeterministic
 import org.xmtp.android.library.messages.getPublicKeyBundle
 import org.xmtp.android.library.messages.toPublicKeyBundle
 import org.xmtp.android.library.messages.walletAddress
+import org.xmtp.proto.keystore.api.v1.Keystore
 import java.lang.Thread.sleep
 import java.util.Date
 
@@ -137,4 +138,80 @@ class ConversationsTest {
 
         assertEquals(allMessages.size, 15)
     }
+
+    @Test
+    fun testLoadConvos() {
+        // Build from [8,54,32,15,250,250,23,163,203,139,84,242,45,106,250,96,177,61,164,135,38,84,50,65,173,197,194,80,219,176,224,205]
+        // or in hex 0836200ffafa17a3cb8b54f22d6afa60b13da48726543241adc5c250dbb0e0cd
+        // aka 2k many convos test wallet
+        // Create a ByteArray with the 32 bytes above
+        val privateKeyData = listOf(
+            0x08,
+            0x36,
+            0x20,
+            0x0f,
+            0xfa,
+            0xfa,
+            0x17,
+            0xa3,
+            0xcb,
+            0x8b,
+            0x54,
+            0xf2,
+            0x2d,
+            0x6a,
+            0xfa,
+            0x60,
+            0xb1,
+            0x3d,
+            0xa4,
+            0x87,
+            0x26,
+            0x54,
+            0x32,
+            0x41,
+            0xad,
+            0xc5,
+            0xc2,
+            0x50,
+            0xdb,
+            0xb0,
+            0xe0,
+            0xcd
+        )
+            .map { it.toByte() }
+            .toByteArray()
+        // Use hardcoded privateKey
+        val privateKey = PrivateKeyBuilder.buildFromPrivateKeyData(privateKeyData)
+        val privateKeyBuilder = PrivateKeyBuilder(privateKey)
+        val options =
+            ClientOptions(api = ClientOptions.Api(env = XMTPEnvironment.DEV))
+        val client = Client().create(account = privateKeyBuilder, options = options)
+
+        val start = Date()
+        val conversations = client.conversations.list()
+        val end = Date()
+        println("Loaded ${conversations.size} conversations in ${(end.time - start.time) / 1000.0}s")
+
+        val start2 = Date()
+        val conversations2 = client.conversations.list()
+        val end2 = Date()
+        println("Second time loaded ${conversations2.size} conversations in ${(end2.time - start2.time) / 1000.0}s")
+
+        val last500Topics = conversations.takeLast(500).map { it.toTopicData().toByteString() }
+        val client2 = Client().create(account = privateKeyBuilder, options = options)
+        for (topic in last500Topics) {
+            client2.conversations.importTopicData(Keystore.TopicMap.TopicData.parseFrom(topic))
+        }
+
+        val start3 = Date()
+        val conversations3 = client2.conversations.list()
+        val end3 = Date()
+        println("Loaded ${conversations3.size} conversations in ${(end3.time - start3.time) / 1000.0}s")
+
+        val start4 = Date()
+        val conversations4 = client2.conversations.list()
+        val end4 = Date()
+        println("Second time loaded ${conversations4.size} conversations in ${(end4.time - start4.time) / 1000.0}s")
+    }
 }

library/src/main/java/org/xmtp/android/library/Conversation.kt

@@ -40,7 +40,7 @@ sealed class Conversation {
         get() {
             return when (this) {
                 is V1 -> conversationV1.sentAt
-                is V2 -> conversationV2.createdAt
+                is V2 -> conversationV2.conversationCreatedAt
             }
         }
 

library/src/main/java/org/xmtp/android/library/ConversationV2.kt

@@ -30,6 +30,7 @@ data class ConversationV2(
     val context: Invitation.InvitationV1.Context,
     val peerAddress: String,
     val client: Client,
+    val createdAt: Long? = null,
     private val header: SealedInvitationHeaderV1,
 ) {
 
@@ -50,12 +51,13 @@ data class ConversationV2(
                 context = invitation.context,
                 peerAddress = peerAddress,
                 client = client,
+                createdAt = header.createdNs,
                 header = header,
             )
         }
     }
 
-    val createdAt: Date = Date(header.createdNs / 1_000_000)
+    val conversationCreatedAt: Date = Date((createdAt ?: 0L) / 1_000_000)
 
     /**
      * This lists messages sent to the [Conversation].

library/src/main/java/org/xmtp/android/library/Conversations.kt

@@ -226,6 +226,7 @@ data class Conversations(
                     context = data.invitation.context,
                     peerAddress = data.peerAddress,
                     client = client,
+                    createdAt = data.createdNs,
                     header = Invitation.SealedInvitationHeaderV1.getDefaultInstance(),
                 ),
             )