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/*
* Copyright (C) 2015 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.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Build.VERSION_CODES;
import android.provider.BlockedNumberContract.BlockedNumbers;
import android.support.annotation.RequiresApi;
import com.android.dialer.common.LogUtil;
import com.android.dialer.database.FilteredNumberContract;
import com.android.dialer.database.FilteredNumberContract.FilteredNumber;
import com.android.dialer.database.FilteredNumberContract.FilteredNumberColumns;
import java.util.Objects;
/**
* Class which should be used to migrate numbers from {@link FilteredNumberContract} blocking to
* {@link android.provider.BlockedNumberContract} blocking.
*/
@TargetApi(VERSION_CODES.M)
public class BlockedNumbersMigrator {
private final Context context;
/**
* Creates a new BlockedNumbersMigrate, using the given {@link ContentResolver} to perform queries
* against the blocked numbers tables.
*/
public BlockedNumbersMigrator(Context context) {
this.context = Objects.requireNonNull(context);
}
@RequiresApi(VERSION_CODES.N)
@TargetApi(VERSION_CODES.N)
private static boolean migrateToNewBlockingInBackground(ContentResolver resolver) {
try (Cursor cursor =
resolver.query(
FilteredNumber.CONTENT_URI,
new String[] {FilteredNumberColumns.NUMBER},
null,
null,
null)) {
if (cursor == null) {
LogUtil.i(
"BlockedNumbersMigrator.migrateToNewBlockingInBackground", "migrate - cursor was null");
return false;
}
LogUtil.i(
"BlockedNumbersMigrator.migrateToNewBlockingInBackground",
"migrate - attempting to migrate " + cursor.getCount() + "numbers");
int numMigrated = 0;
while (cursor.moveToNext()) {
String originalNumber =
cursor.getString(cursor.getColumnIndex(FilteredNumberColumns.NUMBER));
if (isNumberInNewBlocking(resolver, originalNumber)) {
LogUtil.i(
"BlockedNumbersMigrator.migrateToNewBlockingInBackground",
"migrate - number was already blocked in new blocking");
continue;
}
ContentValues values = new ContentValues();
values.put(BlockedNumbers.COLUMN_ORIGINAL_NUMBER, originalNumber);
resolver.insert(BlockedNumbers.CONTENT_URI, values);
++numMigrated;
}
LogUtil.i(
"BlockedNumbersMigrator.migrateToNewBlockingInBackground",
"migrate - migration complete. " + numMigrated + " numbers migrated.");
return true;
}
}
@RequiresApi(VERSION_CODES.N)
@TargetApi(VERSION_CODES.N)
private static boolean isNumberInNewBlocking(ContentResolver resolver, String originalNumber) {
try (Cursor cursor =
resolver.query(
BlockedNumbers.CONTENT_URI,
new String[] {BlockedNumbers.COLUMN_ID},
BlockedNumbers.COLUMN_ORIGINAL_NUMBER + " = ?",
new String[] {originalNumber},
null)) {
return cursor != null && cursor.getCount() != 0;
}
}
/**
* Copies all of the numbers in the {@link FilteredNumberContract} block list to the {@link
* android.provider.BlockedNumberContract} block list.
*
* @param listener {@link Listener} called once the migration is complete.
* @return {@code true} if the migrate can be attempted, {@code false} otherwise.
* @throws NullPointerException if listener is null
*/
public boolean migrate(final Listener listener) {
LogUtil.i("BlockedNumbersMigrator.migrate", "migrate - start");
if (!FilteredNumberCompat.canUseNewFiltering()) {
LogUtil.i("BlockedNumbersMigrator.migrate", "migrate - can't use new filtering");
return false;
}
Objects.requireNonNull(listener);
new MigratorTask(listener).execute();
return true;
}
/**
* Listener for the operation to migrate from {@link FilteredNumberContract} blocking to {@link
* android.provider.BlockedNumberContract} blocking.
*/
public interface Listener {
/** Called when the migration operation is finished. */
void onComplete();
}
@TargetApi(VERSION_CODES.N)
private class MigratorTask extends AsyncTask<Void, Void, Boolean> {
private final Listener listener;
public MigratorTask(Listener listener) {
this.listener = listener;
}
@Override
protected Boolean doInBackground(Void... params) {
LogUtil.i("BlockedNumbersMigrator.doInBackground", "migrate - start background migration");
return migrateToNewBlockingInBackground(context.getContentResolver());
}
@Override
protected void onPostExecute(Boolean isSuccessful) {
LogUtil.i("BlockedNumbersMigrator.onPostExecute", "migrate - marking migration complete");
FilteredNumberCompat.setHasMigratedToNewBlocking(context, isSuccessful);
LogUtil.i("BlockedNumbersMigrator.onPostExecute", "migrate - calling listener");
listener.onComplete();
}
}
}
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