From 89a6f5e7a3b18a5266f989e59a981a6071e43adf Mon Sep 17 00:00:00 2001
From: mthiesc <mthiesc@amazon.com>
Date: Thu, 11 Jul 2024 20:13:29 +0200
Subject: [PATCH] Launch/Bring to the foreground Content App on Target
 Navigator and Content Launch Command (#34223)

* Launch content app on command

[Problem]
3P content app does not have permissions to launch itself and put main activity in foreground. This is necessary in response to ContentLauncher and TargetNavigator cluster commands.

[Solution]
Intercept the LaunchContent and NavigateTarget commands in
ContentAppEndpointManagerImpl. Then start content app main/launch activity if it's not
already in the foreground before sending command intent.

[Testing]
WIP

* Add logic to detect foreground apps

* Restyled by whitespace

* Restyled by google-java-format

* Update code

* Restyled by google-java-format

---------

Co-authored-by: Lazar Kovacic <lkovacic@amazon.com>
Co-authored-by: Restyled.io <commits@restyled.io>
---
 .../platform-app/src/main/AndroidManifest.xml |  3 ++
 .../ContentAppEndpointManagerImpl.java        | 40 +++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/examples/tv-app/android/App/platform-app/src/main/AndroidManifest.xml b/examples/tv-app/android/App/platform-app/src/main/AndroidManifest.xml
index b6e00cd75d0365..476faa2030c7a2 100644
--- a/examples/tv-app/android/App/platform-app/src/main/AndroidManifest.xml
+++ b/examples/tv-app/android/App/platform-app/src/main/AndroidManifest.xml
@@ -26,6 +26,9 @@
         tools:ignore="QueryAllPackagesPermission" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
 
+    <uses-permission android:name="android.permission.GET_TASKS" />
+
+
     <application
         android:allowBackup="true"
         android:extractNativeLibs="true"
diff --git a/examples/tv-app/android/App/platform-app/src/main/java/com/matter/tv/server/handlers/ContentAppEndpointManagerImpl.java b/examples/tv-app/android/App/platform-app/src/main/java/com/matter/tv/server/handlers/ContentAppEndpointManagerImpl.java
index f93897f2d2a582..85fe7367944c74 100644
--- a/examples/tv-app/android/App/platform-app/src/main/java/com/matter/tv/server/handlers/ContentAppEndpointManagerImpl.java
+++ b/examples/tv-app/android/App/platform-app/src/main/java/com/matter/tv/server/handlers/ContentAppEndpointManagerImpl.java
@@ -1,13 +1,17 @@
 package com.matter.tv.server.handlers;
 
+import android.app.ActivityManager;
 import android.content.Context;
+import android.content.Intent;
 import android.util.Log;
+import com.matter.tv.app.api.Clusters;
 import com.matter.tv.server.model.ContentApp;
 import com.matter.tv.server.receivers.ContentAppDiscoveryService;
 import com.matter.tv.server.service.ContentAppAgentService;
 import com.matter.tv.server.tvapp.ContentAppEndpointManager;
 import com.matter.tv.server.utils.EndpointsDataStore;
 import java.util.Collection;
+import java.util.List;
 
 public class ContentAppEndpointManagerImpl implements ContentAppEndpointManager {
 
@@ -18,6 +22,31 @@ public ContentAppEndpointManagerImpl(Context context) {
     this.context = context;
   }
 
+  private boolean isForegroundCommand(long clusterId, long commandId) {
+    switch ((int) clusterId) {
+      case Clusters.ContentLauncher.Id:
+        return commandId == Clusters.ContentLauncher.Commands.LaunchContent.ID
+            || commandId == Clusters.ContentLauncher.Commands.LaunchURL.ID;
+      case Clusters.TargetNavigator.Id:
+        return commandId == Clusters.TargetNavigator.Commands.NavigateTarget.ID;
+      default:
+        return false;
+    }
+  }
+
+  private boolean isAppInForeground(String contentAppPackageName) {
+    ActivityManager activityManager =
+        (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
+    List<ActivityManager.RunningTaskInfo> tasks = activityManager.getRunningTasks(1);
+    if (tasks != null && !tasks.isEmpty()) {
+      ActivityManager.RunningTaskInfo taskInfo = tasks.get(0);
+      String packageName =
+          taskInfo.topActivity != null ? taskInfo.topActivity.getPackageName() : "";
+      return packageName.equals(contentAppPackageName);
+    }
+    return false;
+  }
+
   public String sendCommand(int endpointId, long clusterId, long commandId, String commandPayload) {
     Log.d(TAG, "Received a command for endpointId " + endpointId + ". Message " + commandPayload);
 
@@ -26,6 +55,17 @@ public String sendCommand(int endpointId, long clusterId, long commandId, String
             ContentAppDiscoveryService.getReceiverInstance().getDiscoveredContentApps().values(),
             endpointId);
     if (discoveredApp != null) {
+      // Intercept NavigateTarget and LaunchContent commands and launch content app if necessary
+      if (isForegroundCommand(clusterId, commandId)) {
+        // Check if contentapp main/launch activity is already in foreground before launching.
+        if (!isAppInForeground(discoveredApp.getAppName())) {
+          Intent launchIntent =
+              context.getPackageManager().getLaunchIntentForPackage(discoveredApp.getAppName());
+          if (launchIntent != null) {
+            context.startActivity(launchIntent);
+          }
+        }
+      }
       Log.d(TAG, "Sending a command for endpointId " + endpointId + ". Message " + commandPayload);
       return ContentAppAgentService.sendCommand(
           context, discoveredApp.getAppName(), clusterId, commandId, commandPayload);