Changes in PeopleService to supprot ChooserTarget ranking.

1. Pass app share score from PeopleService to Aosp.
2. Skip storing ChooserTargets sharing event in PeopleService.
3. Adjust frequest used app promo decay.

Bug: 151112858
Test: atest com.android.server.people.prediction.ShareTargetPredictorTest
Test: atest com.android.server.people.prediction.SharesheetModelScorerTest
Change-Id: If27d0c914b9f156403950e7ea601b4a7ad35b27f

3 files changed, 29 insertions, 2 deletions

diff --git a/services/people/java/com/android/server/people/data/DataManager.java b/services/people/java/com/android/server/people/data/DataManager.java
index c87ece29800c..ee3c39fc60b0 100644
--- a/services/people/java/com/android/server/people/data/DataManager.java
+++ b/services/people/java/com/android/server/people/data/DataManager.java
@@ -226,6 +226,10 @@ public class DataManager {
                 return;
             }
             String shortcutId = appTarget.getShortcutInfo().getId();
+            // Skip storing chooserTargets sharing events
+            if (ChooserActivity.CHOOSER_TARGET.equals(shortcutId)) {
+                return;
+            }
             if (packageData.getConversationStore().getConversation(shortcutId) == null) {
                 addOrUpdateConversationInfo(appTarget.getShortcutInfo());
             }
diff --git a/services/people/java/com/android/server/people/prediction/ShareTargetPredictor.java b/services/people/java/com/android/server/people/prediction/ShareTargetPredictor.java
index d09d0b379769..43acd459f84b 100644
--- a/services/people/java/com/android/server/people/prediction/ShareTargetPredictor.java
+++ b/services/people/java/com/android/server/people/prediction/ShareTargetPredictor.java
@@ -27,6 +27,8 @@ import android.app.prediction.AppTargetId;
 import android.content.IntentFilter;
 import android.content.pm.ShortcutInfo;
 import android.content.pm.ShortcutManager.ShareShortcutInfo;
+import android.util.Log;
+import android.util.Slog;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.app.ChooserActivity;
@@ -45,6 +47,8 @@ import java.util.function.Consumer;
  */
 class ShareTargetPredictor extends AppTargetPredictor {
 
+    private static final String TAG = "ShareTargetPredictor";
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
     private final IntentFilter mIntentFilter;
 
     ShareTargetPredictor(@NonNull AppPredictionContext predictionContext,
@@ -59,6 +63,9 @@ class ShareTargetPredictor extends AppTargetPredictor {
     @WorkerThread
     @Override
     void reportAppTargetEvent(AppTargetEvent event) {
+        if (DEBUG) {
+            Slog.d(TAG, "reportAppTargetEvent");
+        }
         getDataManager().reportShareTargetEvent(event, mIntentFilter);
     }
 
@@ -66,6 +73,9 @@ class ShareTargetPredictor extends AppTargetPredictor {
     @WorkerThread
     @Override
     void predictTargets() {
+        if (DEBUG) {
+            Slog.d(TAG, "predictTargets");
+        }
         List<ShareTarget> shareTargets = getDirectShareTargets();
         SharesheetModelScorer.computeScore(shareTargets, getShareEventType(mIntentFilter),
                 System.currentTimeMillis());
@@ -82,6 +92,9 @@ class ShareTargetPredictor extends AppTargetPredictor {
     @WorkerThread
     @Override
     void sortTargets(List<AppTarget> targets, Consumer<List<AppTarget>> callback) {
+        if (DEBUG) {
+            Slog.d(TAG, "sortTargets");
+        }
         List<ShareTarget> shareTargets = getAppShareTargets(targets);
         SharesheetModelScorer.computeScoreForAppShare(shareTargets,
                 getShareEventType(mIntentFilter), getPredictionContext().getPredictedTargetCount(),
@@ -89,7 +102,15 @@ class ShareTargetPredictor extends AppTargetPredictor {
                 mCallingUserId);
         Collections.sort(shareTargets, (t1, t2) -> -Float.compare(t1.getScore(), t2.getScore()));
         List<AppTarget> appTargetList = new ArrayList<>();
-        shareTargets.forEach(t -> appTargetList.add(t.getAppTarget()));
+        for (ShareTarget shareTarget : shareTargets) {
+            AppTarget appTarget = shareTarget.getAppTarget();
+            appTargetList.add(new AppTarget.Builder(appTarget.getId(), appTarget.getPackageName(),
+                    appTarget.getUser())
+                    .setClassName(appTarget.getClassName())
+                    .setRank(shareTarget.getScore() > 0 ? (int) (shareTarget.getScore()
+                            * 1000) : 0)
+                    .build());
+        }
         callback.accept(appTargetList);
     }
 
diff --git a/services/people/java/com/android/server/people/prediction/SharesheetModelScorer.java b/services/people/java/com/android/server/people/prediction/SharesheetModelScorer.java
index 0ac5724210da..76f252efb412 100644
--- a/services/people/java/com/android/server/people/prediction/SharesheetModelScorer.java
+++ b/services/people/java/com/android/server/people/prediction/SharesheetModelScorer.java
@@ -50,6 +50,7 @@ class SharesheetModelScorer {
     private static final float RECENCY_SCORE_SUBSEQUENT_DECAY = 0.02F;
     private static final long ONE_MONTH_WINDOW = TimeUnit.DAYS.toMillis(30);
     private static final long FOREGROUND_APP_PROMO_TIME_WINDOW = TimeUnit.MINUTES.toMillis(10);
+    private static final float FREQUENTLY_USED_APP_SCORE_INITIAL_DECAY = 0.3F;
     private static final float FREQUENTLY_USED_APP_SCORE_DECAY = 0.9F;
     @VisibleForTesting
     static final float FOREGROUND_APP_WEIGHT = 0F;
@@ -219,6 +220,7 @@ class SharesheetModelScorer {
         Map<String, Integer> appLaunchCountsMap = dataManager.queryAppLaunchCount(
                 callingUserId, now - ONE_MONTH_WINDOW, now, shareTargetMap.keySet());
         List<Pair<String, Integer>> appLaunchCounts = new ArrayList<>();
+        minValidScore *= FREQUENTLY_USED_APP_SCORE_INITIAL_DECAY;
         for (Map.Entry<String, Integer> entry : appLaunchCountsMap.entrySet()) {
             if (entry.getValue() > 0) {
                 appLaunchCounts.add(new Pair(entry.getKey(), entry.getValue()));
@@ -233,8 +235,8 @@ class SharesheetModelScorer {
             if (target.getScore() > 0f) {
                 continue;
             }
-            minValidScore *= FREQUENTLY_USED_APP_SCORE_DECAY;
             target.setScore(minValidScore);
+            minValidScore *= FREQUENTLY_USED_APP_SCORE_DECAY;
             if (DEBUG) {
                 Slog.d(TAG, String.format(
                         "SharesheetModel: promoteFrequentUsedApps packageName: %s, className: %s,"