Implement a libsignal-net shadowing web socket.

app/src/main/java/org/thoughtcrime/securesms/net/DefaultWebSocketShadowingBridge.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.net
+
+import android.app.Application
+import android.app.Notification
+import android.app.PendingIntent
+import android.content.Intent
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import org.signal.core.util.PendingIntentFlags
+import org.thoughtcrime.securesms.R
+import org.thoughtcrime.securesms.keyvalue.InternalValues
+import org.thoughtcrime.securesms.keyvalue.SignalStore
+import org.thoughtcrime.securesms.logsubmit.SubmitDebugLogActivity
+import org.thoughtcrime.securesms.notifications.NotificationChannels
+import org.thoughtcrime.securesms.notifications.NotificationIds
+import org.thoughtcrime.securesms.util.FeatureFlags
+import org.whispersystems.signalservice.internal.websocket.WebSocketShadowingBridge
+
+/**
+ * Implements a [WebSocketShadowingBridge] to provide shadowing-specific functionality to
+ * [org.whispersystems.signalservice.internal.websocket.ShadowingWebSocketConnection]
+ */
+class DefaultWebSocketShadowingBridge(private val context: Application) : WebSocketShadowingBridge {
+  private val store: InternalValues = SignalStore.internalValues()
+
+  override fun writeStatsSnapshot(bytes: ByteArray) {
+    store.setWebSocketShadowingStats(bytes)
+  }
+
+  override fun readStatsSnapshot(): ByteArray? {
+    return store.getWebSocketShadowingStats(null)
+  }
+
+  override fun triggerFailureNotification(message: String) {
+    if (!FeatureFlags.internalUser()) {
+      return
+    }
+    val notification: Notification = NotificationCompat.Builder(context, NotificationChannels.getInstance().FAILURES)
+      .setSmallIcon(R.drawable.ic_notification)
+      .setContentTitle("[Internal-only] $message")
+      .setContentText("Tap to send a debug log")
+      .setContentIntent(
+        PendingIntent.getActivity(
+          context,
+          0,
+          Intent(context, SubmitDebugLogActivity::class.java),
+          PendingIntentFlags.mutable()
+        )
+      )
+      .build()
+
+    NotificationManagerCompat.from(context).notify(NotificationIds.INTERNAL_ERROR, notification)
+  }
+}