Jitsi call : create JitsiBroadcastEventObserver

vector/src/main/java/im/vector/app/features/call/conference/JitsiBroadcastEventObserver.kt

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2021 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.call.conference
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleObserver
+import androidx.lifecycle.OnLifecycleEvent
+import androidx.localbroadcastmanager.content.LocalBroadcastManager
+import org.jitsi.meet.sdk.BroadcastEvent
+import org.matrix.android.sdk.api.extensions.tryOrNull
+
+fun BroadcastEvent.extractConferenceUrl(): String? {
+    return when (type) {
+        BroadcastEvent.Type.CONFERENCE_TERMINATED,
+        BroadcastEvent.Type.CONFERENCE_WILL_JOIN,
+        BroadcastEvent.Type.CONFERENCE_JOINED -> data["url"] as? String
+        else                                  -> null
+    }
+}
+
+class JitsiBroadcastEventObserver(private val context: Context,
+                                  private val onBroadcastEvent: (BroadcastEvent) -> Unit) : LifecycleObserver {
+
+    // See https://jitsi.github.io/handbook/docs/dev-guide/dev-guide-android-sdk#listening-for-broadcasted-events
+    private val broadcastReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context?, intent: Intent?) {
+            intent?.let { onBroadcastReceived(it) }
+        }
+    }
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
+    fun unregisterForBroadcastMessages() {
+        tryOrNull("Unable to unregister receiver") {
+            LocalBroadcastManager.getInstance(context).unregisterReceiver(broadcastReceiver)
+        }
+    }
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
+    fun registerForBroadcastMessages() {
+        val intentFilter = IntentFilter()
+        for (type in BroadcastEvent.Type.values()) {
+            intentFilter.addAction(type.action)
+        }
+        tryOrNull("Unable to register receiver") {
+            LocalBroadcastManager.getInstance(context).registerReceiver(broadcastReceiver, intentFilter)
+        }
+    }
+
+    private fun onBroadcastReceived(intent: Intent) {
+        val event = BroadcastEvent(intent)
+        onBroadcastEvent(event)
+    }
+}