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/*
* 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.blocking;
import android.content.Context;
import android.content.SharedPreferences;
import android.support.annotation.NonNull;
import com.android.dialer.blocking.FilteredNumberAsyncQueryHandler.OnHasBlockedNumbersListener;
import com.android.dialer.common.LogUtil;
import java.util.Objects;
/**
* 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 {
static final String HAS_CHECKED_AUTO_MIGRATE_KEY = "checkedAutoMigrate";
@NonNull private final Context context;
@NonNull private final SharedPreferences sharedPreferences;
@NonNull 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(
@NonNull Context context,
@NonNull SharedPreferences sharedPreferences,
@NonNull FilteredNumberAsyncQueryHandler queryHandler) {
this.context = Objects.requireNonNull(context);
this.sharedPreferences = Objects.requireNonNull(sharedPreferences);
this.queryHandler = Objects.requireNonNull(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;
}
LogUtil.i("BlockedNumbersAutoMigrator", "attempting to auto-migrate.");
queryHandler.hasBlockedNumbers(
new OnHasBlockedNumbersListener() {
@Override
public void onHasBlockedNumbers(boolean hasBlockedNumbers) {
if (hasBlockedNumbers) {
LogUtil.i("BlockedNumbersAutoMigrator", "not auto-migrating: blocked numbers exist.");
return;
}
LogUtil.i("BlockedNumbersAutoMigrator", "auto-migrating: no blocked numbers.");
FilteredNumberCompat.setHasMigratedToNewBlocking(context, true);
}
});
}
private boolean shouldAttemptAutoMigrate() {
if (sharedPreferences.contains(HAS_CHECKED_AUTO_MIGRATE_KEY)) {
LogUtil.v("BlockedNumbersAutoMigrator", "not attempting auto-migrate: already checked once.");
return false;
}
if (!FilteredNumberCompat.canAttemptBlockOperations(context)) {
// This may be the case where the user is on the lock screen, so we shouldn't record that the
// migration status was checked.
LogUtil.i(
"BlockedNumbersAutoMigrator", "not attempting auto-migrate: current user can't block");
return false;
}
LogUtil.i("BlockedNumbersAutoMigrator", "updating state as already checked for auto-migrate.");
sharedPreferences.edit().putBoolean(HAS_CHECKED_AUTO_MIGRATE_KEY, true).apply();
if (!FilteredNumberCompat.canUseNewFiltering()) {
LogUtil.i("BlockedNumbersAutoMigrator", "not attempting auto-migrate: not available.");
return false;
}
if (FilteredNumberCompat.hasMigratedToNewBlocking(context)) {
LogUtil.i("BlockedNumbersAutoMigrator", "not attempting auto-migrate: already migrated.");
return false;
}
return true;
}
}
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