VmTerminalApp: Non-interactive installation for debug and development

For debuggable build, download automatically starts if /sdcard/linux
exists.

Plus, also added KEYCODE_BUTTON_START supports for automation on user
build.

Bug: 376759235
Test: Manual, T/H
Change-Id: I8f3c2b19120c68b14cf391e421a7ef1cc7357f9b
diff --git a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerActivity.java b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerActivity.java
index 1abba85..83c6b4c 100644
--- a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerActivity.java
+++ b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerActivity.java
@@ -29,11 +29,13 @@
 import android.os.RemoteException;
 import android.text.format.Formatter;
 import android.util.Log;
+import android.view.KeyEvent;
 import android.view.View;
 import android.widget.CheckBox;
 import android.widget.TextView;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.virtualization.vmlauncher.InstallUtils;
 
 import com.google.android.material.progressindicator.LinearProgressIndicator;
 import com.google.android.material.snackbar.Snackbar;
@@ -45,7 +47,6 @@
     private static final String TAG = "LinuxInstaller";
 
     private static final long ESTIMATED_IMG_SIZE_BYTES = FileUtils.parseSize("350MB");
-    static final String EXTRA_AUTO_DOWNLOAD = "auto_download";
 
     private ExecutorService mExecutorService;
     private CheckBox mWaitForWifiCheckbox;
@@ -80,17 +81,25 @@
                     requestInstall();
                 });
 
-        if (getIntent().getBooleanExtra(EXTRA_AUTO_DOWNLOAD, false)) {
-            Log.i(TAG, "Auto downloading");
-            requestInstall();
-        }
-
         Intent intent = new Intent(this, InstallerService.class);
         mInstallerServiceConnection = new InstallerServiceConnection(this);
         if (!bindService(intent, mInstallerServiceConnection, Context.BIND_AUTO_CREATE)) {
             handleCriticalError(new Exception("Failed to connect to installer service"));
         }
+    }
 
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        if (Build.isDebuggable() && InstallUtils.payloadFromExternalStorageExists()) {
+            Snackbar.make(
+                            findViewById(android.R.id.content),
+                            "Auto installing",
+                            Snackbar.LENGTH_LONG)
+                    .show();
+            requestInstall();
+        }
     }
 
     @Override
@@ -103,6 +112,15 @@
         super.onDestroy();
     }
 
+    @Override
+    public boolean onKeyUp(int keyCode, KeyEvent event) {
+        if (keyCode == KeyEvent.KEYCODE_BUTTON_START) {
+            requestInstall();
+            return true;
+        }
+        return super.onKeyUp(keyCode, event);
+    }
+
     @VisibleForTesting
     public boolean waitForInstallCompleted(long timeoutMillis) {
         return mInstallCompleted.block(timeoutMillis);
diff --git a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
index b785416..f97f16f 100644
--- a/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
+++ b/android/TerminalApp/java/com/android/virtualization/terminal/InstallerService.java
@@ -17,8 +17,6 @@
 package com.android.virtualization.terminal;
 
 import android.app.Notification;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Intent;
@@ -122,16 +120,21 @@
     }
 
     private void requestInstall() {
-        Log.i(TAG, "Installing..");
+        synchronized (mLock) {
+            if (mIsInstalling) {
+                Log.i(TAG, "already installing..");
+                return;
+            } else {
+                Log.i(TAG, "installing..");
+                mIsInstalling = true;
+            }
+        }
 
         // Make service to be long running, even after unbind() when InstallerActivity is destroyed
         // The service will still be destroyed if task is remove.
         startService(new Intent(this, InstallerService.class));
         startForeground(
                 NOTIFICATION_ID, mNotification, ServiceInfo.FOREGROUND_SERVICE_TYPE_SPECIAL_USE);
-        synchronized (mLock) {
-            mIsInstalling = true;
-        }
 
         mExecutorService.execute(
                 () -> {
diff --git a/tests/Terminal/src/com/android/virtualization/terminal/TerminalAppTest.java b/tests/Terminal/src/com/android/virtualization/terminal/TerminalAppTest.java
index 6400438..fd07973 100644
--- a/tests/Terminal/src/com/android/virtualization/terminal/TerminalAppTest.java
+++ b/tests/Terminal/src/com/android/virtualization/terminal/TerminalAppTest.java
@@ -56,7 +56,6 @@
 
         Intent intent = new Intent(mTargetContext, InstallerActivity.class);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.putExtra(InstallerActivity.EXTRA_AUTO_DOWNLOAD, true);
 
         if (mInstr.startActivitySync(intent) instanceof InstallerActivity activity) {
             assertTrue(