Add cellular backup toggle for message backup.

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

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.jobmanager.impl
+
+import android.app.Application
+import android.app.job.JobInfo
+import org.thoughtcrime.securesms.jobmanager.Constraint
+import org.thoughtcrime.securesms.util.NetworkUtil
+
+/**
+ * Constraint that, when added, means that a job cannot be performed unless the user has Wifi
+ */
+class WifiConstraint(private val application: Application) : Constraint {
+
+  companion object {
+    const val KEY = "WifiConstraint"
+  }
+
+  override fun isMet(): Boolean {
+    return NetworkUtil.isConnectedWifi(application)
+  }
+
+  override fun getFactoryKey(): String = KEY
+
+  override fun applyToJobInfo(jobInfoBuilder: JobInfo.Builder) = Unit
+
+  class Factory(val application: Application) : Constraint.Factory<WifiConstraint> {
+    override fun create(): WifiConstraint {
+      return WifiConstraint(application)
+    }
+  }
+}