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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.filterednumber;
import com.google.common.base.Preconditions;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.os.AsyncTask;
import com.android.dialer.compat.BlockedNumbersSdkCompat;
import com.android.dialer.compat.FilteredNumberCompat;
import com.android.dialer.database.FilteredNumberContract;
import com.android.dialer.database.FilteredNumberContract.FilteredNumber;
import com.android.dialer.database.FilteredNumberContract.FilteredNumberColumns;
/**
* Class which should be used to migrate numbers from {@link FilteredNumberContract} blocking to
* {@link android.provider.BlockedNumberContract} blocking.
*/
public class BlockedNumbersMigrator {
/**
* 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();
}
private final ContentResolver mContentResolver;
/**
* Creates a new BlockedNumbersMigrate, using the given {@link ContentResolver} to perform
* queries against the blocked numbers tables.
*
* @param contentResolver The ContentResolver
* @throws NullPointerException if contentResolver is null
*/
public BlockedNumbersMigrator(ContentResolver contentResolver) {
mContentResolver = Preconditions.checkNotNull(contentResolver);
}
/**
* 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) {
if (!FilteredNumberCompat.canUseNewFiltering()) {
return false;
}
Preconditions.checkNotNull(listener);
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... params) {
return migrateToNewBlockingInBackground(mContentResolver);
}
@Override
protected void onPostExecute(Boolean isSuccessful) {
FilteredNumberCompat.setHasMigratedToNewBlocking(isSuccessful);
listener.onComplete();
}
}.execute();
return true;
}
private static boolean migrateToNewBlockingInBackground(ContentResolver resolver) {
try (Cursor cursor = resolver.query(FilteredNumber.CONTENT_URI,
new String[]{FilteredNumberColumns.NUMBER}, null, null, null)) {
if (cursor == null) {
return false;
}
while (cursor.moveToNext()) {
String originalNumber = cursor
.getString(cursor.getColumnIndex(FilteredNumberColumns.NUMBER));
if (isNumberInNewBlocking(resolver, originalNumber)) {
continue;
}
ContentValues values = new ContentValues();
values.put(BlockedNumbersSdkCompat.COLUMN_ORIGINAL_NUMBER, originalNumber);
resolver.insert(BlockedNumbersSdkCompat.CONTENT_URI, values);
}
return true;
}
}
private static boolean isNumberInNewBlocking(ContentResolver resolver, String originalNumber) {
try (Cursor cursor = resolver.query(BlockedNumbersSdkCompat.CONTENT_URI,
new String[]{BlockedNumbersSdkCompat._ID},
BlockedNumbersSdkCompat.COLUMN_ORIGINAL_NUMBER + " = ?",
new String[] {originalNumber}, null)) {
return cursor != null && cursor.getCount() != 0;
}
}
}
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