Add sticker specific restore flow and fix archive related sticker bugs.

app/src/main/java/org/thoughtcrime/securesms/jobmanager/JobController.java

@@ -469,6 +469,10 @@ class JobController {
     return jobStorage.areQueuesEmpty(queueKeys);
   }
 
+  synchronized boolean areFactoriesEmpty(@NonNull Set<String> factoryKeys) {
+    return jobStorage.areFactoriesEmpty(factoryKeys);
+  }
+
   /**
    * Initializes the dynamic JobRunner system with minimum threads.
    */

app/src/main/java/org/thoughtcrime/securesms/jobmanager/JobManager.java

@@ -436,6 +436,19 @@ public class JobManager implements ConstraintObserver.Notifier {
     return jobController.areQueuesEmpty(queueKeys);
   }
 
+  /**
+   * Can tell you if there are no jobs for the given factories at the time of invocation. It is worth noting
+   * that the state could change immediately after this method returns due to a call on some
+   * other thread, and you should take that into consideration when using the result.
+   *
+   * @return True if there are no jobs for the given factories at the time of invocation, otherwise false.
+   */
+  @WorkerThread
+  public boolean areFactoriesEmpty(@NonNull Set<String> factoryKeys) {
+    waitUntilInitialized();
+    return jobController.areFactoriesEmpty(factoryKeys);
+  }
+
   /**
    * Pokes the system to take another pass at the job queue.
    */

app/src/main/java/org/thoughtcrime/securesms/jobmanager/impl/StickersNotDownloadingConstraint.kt

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2025 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.jobmanager.impl
+
+import android.app.job.JobInfo
+import org.thoughtcrime.securesms.dependencies.AppDependencies
+import org.thoughtcrime.securesms.jobmanager.Constraint
+import org.thoughtcrime.securesms.jobmanager.ConstraintObserver
+import org.thoughtcrime.securesms.jobs.StickerDownloadJob
+import org.thoughtcrime.securesms.jobs.StickerPackDownloadJob
+
+/**
+ * When met, no sticker download jobs should be in the job queue/running.
+ */
+object StickersNotDownloadingConstraint : Constraint {
+
+  const val KEY = "StickersNotDownloadingConstraint"
+
+  private val factoryKeys = setOf(StickerPackDownloadJob.KEY, StickerDownloadJob.KEY)
+
+  override fun isMet(): Boolean {
+    return AppDependencies.jobManager.areFactoriesEmpty(factoryKeys)
+  }
+
+  override fun getFactoryKey(): String = KEY
+
+  override fun applyToJobInfo(jobInfoBuilder: JobInfo.Builder) = Unit
+
+  object Observer : ConstraintObserver {
+    override fun register(notifier: ConstraintObserver.Notifier) {
+      AppDependencies.jobManager.addListener({ job -> factoryKeys.contains(job.factoryKey) }) { job, jobState ->
+        if (jobState.isComplete) {
+          if (isMet) {
+            notifier.onConstraintMet(KEY)
+          }
+        }
+      }
+    }
+  }
+
+  class Factory : Constraint.Factory<StickersNotDownloadingConstraint> {
+    override fun create(): StickersNotDownloadingConstraint {
+      return StickersNotDownloadingConstraint
+    }
+  }
+}

app/src/main/java/org/thoughtcrime/securesms/jobmanager/persistence/JobStorage.kt

@@ -35,6 +35,9 @@ interface JobStorage {
   @WorkerThread
   fun areQueuesEmpty(queueKeys: Set<String>): Boolean
 
+  @WorkerThread
+  fun areFactoriesEmpty(factoryKeys: Set<String>): Boolean
+
   @WorkerThread
   fun markJobAsRunning(id: String, currentTime: Long)