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/*
* Copyright (C) 2017 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.assisteddialing;
import android.support.annotation.NonNull;
import com.android.dialer.common.LogUtil;
import java.util.Optional;
/**
* The Mediator for Assisted Dialing.
*
* <p>This class is responsible for mediating location discovery of the user, determining if the
* call is eligible for assisted dialing, and performing the transformation of numbers eligible for
* assisted dialing.
*/
final class AssistedDialingMediatorImpl implements AssistedDialingMediator {
private final LocationDetector locationDetector;
private final NumberTransformer numberTransformer;
AssistedDialingMediatorImpl(
@NonNull LocationDetector locationDetector, @NonNull NumberTransformer numberTransformer) {
if (locationDetector == null) {
throw new NullPointerException("locationDetector was null");
}
if (numberTransformer == null) {
throw new NullPointerException("numberTransformer was null");
}
this.locationDetector = locationDetector;
this.numberTransformer = numberTransformer;
}
@Override
public boolean isPlatformEligible() {
// This impl is only instantiated if it passes platform checks in ConcreteCreator,
// so we return true here.
return true;
}
/** Returns the country code in which the library thinks the user typically resides. */
@Override
public Optional<String> userHomeCountryCode() {
return locationDetector.getUpperCaseUserHomeCountry();
}
/**
* Returns an Optional of type String containing the transformed number that was provided. The
* transformed number should be capable of dialing out of the User's current country and
* successfully connecting with a contact in the User's home country.
*/
@Override
public Optional<TransformationInfo> attemptAssistedDial(@NonNull String numberToTransform) {
Optional<String> userHomeCountryCode = locationDetector.getUpperCaseUserHomeCountry();
Optional<String> userRoamingCountryCode = locationDetector.getUpperCaseUserRoamingCountry();
if (!userHomeCountryCode.isPresent() || !userRoamingCountryCode.isPresent()) {
LogUtil.i("AssistedDialingMediator.attemptAssistedDial", "Unable to determine country codes");
return Optional.empty();
}
return numberTransformer.doAssistedDialingTransformation(
numberToTransform, userHomeCountryCode.get(), userRoamingCountryCode.get());
}
}
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