CallLink NullMessage sending.

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallLinkNullMessageSender.kt

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2023 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.components.webrtc
+
+import org.thoughtcrime.securesms.database.identity.IdentityRecordList
+import org.thoughtcrime.securesms.dependencies.ApplicationDependencies
+import org.thoughtcrime.securesms.jobs.NullMessageSendJob
+import org.thoughtcrime.securesms.recipients.Recipient
+import org.thoughtcrime.securesms.recipients.RecipientId
+
+/**
+ * In-Memory Cache that keeps track of whom we've sent NullMessages to. This is
+ * something that really only needs to happen once so that profile information is
+ * displayed correctly, so we maintain an application process scoped cache.
+ */
+object CallLinkNullMessageSender {
+  private val cache = hashSetOf<RecipientId>()
+
+  /**
+   * Invoked after pressing "Join" or "Continue" on the safety number change dialog before
+   * or during a call.
+   */
+  @JvmStatic
+  fun onSendAnyway(recipientIds: Set<RecipientId>) {
+    val toSendMessagesTo: Set<RecipientId> = recipientIds - cache
+    cache += recipientIds
+
+    val jobs: List<NullMessageSendJob> = toSendMessagesTo.map { NullMessageSendJob(it) }
+    ApplicationDependencies.getJobManager().addAll(jobs)
+  }
+
+  /**
+   * Given the set of recipients, for each unblocked recipient we don't distrust, send a NullMessage
+   */
+  fun onRecipientsUpdated(recipients: Set<Recipient>) {
+    val nonBlockedRecipients: List<Recipient> = recipients.filterNot { it.isBlocked }
+
+    val identityRecords: IdentityRecordList = ApplicationDependencies
+      .getProtocolStore()
+      .aci()
+      .identities()
+      .getIdentityRecords(nonBlockedRecipients)
+
+    val untrustedAndUnverifiedRecipients = if (identityRecords.isUntrusted(false) || identityRecords.isUnverified(false)) {
+      (identityRecords.untrustedRecipients + identityRecords.unverifiedRecipients).toSet()
+    } else {
+      emptySet()
+    }
+
+    val trustedRecipients: Set<RecipientId> = (nonBlockedRecipients - untrustedAndUnverifiedRecipients).map { it.id }.toSet()
+    onSendAnyway(trustedRecipients)
+  }
+}