1 files changed, 101 insertions, 0 deletions
diff --git a/src/com/android/dialer/filterednumber/BlockedNumbersAutoMigrator.java b/src/com/android/dialer/filterednumber/BlockedNumbersAutoMigrator.java
new file mode 100644
index 000000000..ed0faabbe
--- /dev/null
+++ b/src/com/android/dialer/filterednumber/BlockedNumbersAutoMigrator.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 com.android.dialer.filterednumber;
+
+import com.google.common.base.Preconditions;
+
+import android.content.SharedPreferences;
+import android.util.Log;
+
+import com.android.dialer.compat.FilteredNumberCompat;
+import com.android.dialer.database.FilteredNumberAsyncQueryHandler;
+import com.android.dialer.database.FilteredNumberAsyncQueryHandler.OnHasBlockedNumbersListener;
+
+/**
+ * Class responsible for checking if the user can be auto-migrated to {@link
+ * android.provider.BlockedNumberContract} blocking. In order for this to happen, the user cannot
+ * have any numbers that are blocked in the Dialer solution.
+ */
+public class BlockedNumbersAutoMigrator {
+
+    private static final String TAG = "BlockedNumbersAuto";
+
+    private static final String HAS_CHECKED_AUTO_MIGRATE_KEY = "checkedAutoMigrate";
+
+    private final SharedPreferences sharedPreferences;
+    private final FilteredNumberAsyncQueryHandler queryHandler;
+
+    /**
+     * Constructs the BlockedNumbersAutoMigrator with the given {@link SharedPreferences} and {@link
+     * FilteredNumberAsyncQueryHandler}.
+     *
+     * @param sharedPreferences The SharedPreferences used to persist information.
+     * @param queryHandler The FilteredNumberAsyncQueryHandler used to determine if there are
+     * blocked numbers.
+     * @throws NullPointerException if sharedPreferences or queryHandler are null.
+     */
+    public BlockedNumbersAutoMigrator(SharedPreferences sharedPreferences,
+            FilteredNumberAsyncQueryHandler queryHandler) {
+        this.sharedPreferences = Preconditions.checkNotNull(sharedPreferences);
+        this.queryHandler = Preconditions.checkNotNull(queryHandler);
+    }
+
+    /**
+     * Attempts to perform the auto-migration. Auto-migration will only be attempted once and can be
+     * performed only when the user has no blocked numbers. As a result of this method, the user
+     * will be migrated to the framework blocking solution, as determined by {@link
+     * FilteredNumberCompat#hasMigratedToNewBlocking()}.
+     */
+    public void autoMigrate() {
+        if (!shouldAttemptAutoMigrate()) {
+            return;
+        }
+
+        Log.i(TAG, "Attempting to auto-migrate.");
+        queryHandler.hasBlockedNumbers(new OnHasBlockedNumbersListener() {
+            @Override
+            public void onHasBlockedNumbers(boolean hasBlockedNumbers) {
+                if (hasBlockedNumbers) {
+                    Log.i(TAG, "Not auto-migrating: blocked numbers exist.");
+                    return;
+                }
+                Log.i(TAG, "Auto-migrating: no blocked numbers.");
+                FilteredNumberCompat.setHasMigratedToNewBlocking(true);
+            }
+        });
+    }
+
+    private boolean shouldAttemptAutoMigrate() {
+        if (sharedPreferences.contains(HAS_CHECKED_AUTO_MIGRATE_KEY)) {
+            Log.d(TAG, "Not attempting auto-migrate: already checked once.");
+            return false;
+        }
+        Log.i(TAG, "Updating state as already checked for auto-migrate.");
+        sharedPreferences.edit().putBoolean(HAS_CHECKED_AUTO_MIGRATE_KEY, true).apply();
+
+        if (!FilteredNumberCompat.canUseNewFiltering()) {
+            Log.i(TAG, "Not attempting auto-migrate: not available.");
+            return false;
+        }
+
+        if (FilteredNumberCompat.hasMigratedToNewBlocking()) {
+            Log.i(TAG, "Not attempting auto-migrate: already migrated.");
+            return false;
+        }
+        return true;
+    }
+}