97 lines
3.5 KiB
Java
97 lines
3.5 KiB
Java
/*
|
|
* 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.text.TextUtils;
|
|
import com.android.dialer.common.LogUtil;
|
|
import com.android.dialer.strictmode.StrictModeUtils;
|
|
import com.google.i18n.phonenumbers.NumberParseException;
|
|
import com.google.i18n.phonenumbers.PhoneNumberUtil;
|
|
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
|
|
import java.util.Optional;
|
|
|
|
/** Responsible for transforming numbers to make them dialable and valid when roaming. */
|
|
final class NumberTransformer {
|
|
|
|
private final PhoneNumberUtil phoneNumberUtil;
|
|
private final Constraints constraints;
|
|
|
|
NumberTransformer(Constraints constraints) {
|
|
this.constraints = constraints;
|
|
this.phoneNumberUtil = StrictModeUtils.bypass(PhoneNumberUtil::getInstance);
|
|
}
|
|
|
|
/**
|
|
* A method to do assisted dialing transformations.
|
|
*
|
|
* <p>The library will do its best to attempt a transformation, but, if for any reason the
|
|
* transformation fails, we return an empty optional. The operation can be considered a success
|
|
* when the Optional we return has a value set.
|
|
*/
|
|
Optional<TransformationInfo> doAssistedDialingTransformation(
|
|
String numbertoTransform, String userHomeCountryCode, String userRoamingCountryCode) {
|
|
|
|
if (!constraints.meetsPreconditions(
|
|
numbertoTransform, userHomeCountryCode, userRoamingCountryCode)) {
|
|
LogUtil.i(
|
|
"NumberTransformer.doAssistedDialingTransformation",
|
|
"assisted dialing failed preconditions");
|
|
return Optional.empty();
|
|
}
|
|
|
|
PhoneNumber phoneNumber =
|
|
StrictModeUtils.bypass(
|
|
() -> {
|
|
try {
|
|
return phoneNumberUtil.parse(numbertoTransform, userHomeCountryCode);
|
|
} catch (NumberParseException e) {
|
|
LogUtil.i(
|
|
"NumberTransformer.doAssistedDialingTransformation", "number failed to parse");
|
|
return null;
|
|
}
|
|
});
|
|
|
|
if (phoneNumber == null) {
|
|
return Optional.empty();
|
|
}
|
|
|
|
String transformedNumber =
|
|
StrictModeUtils.bypass(
|
|
() ->
|
|
phoneNumberUtil.formatNumberForMobileDialing(
|
|
phoneNumber, userRoamingCountryCode, true));
|
|
|
|
// formatNumberForMobileDialing may return an empty String.
|
|
if (TextUtils.isEmpty(transformedNumber)) {
|
|
LogUtil.i(
|
|
"NumberTransformer.doAssistedDialingTransformation",
|
|
"formatNumberForMobileDialing returned an empty string");
|
|
return Optional.empty();
|
|
}
|
|
|
|
// TODO Verify the transformed number is still valid?
|
|
return Optional.of(
|
|
TransformationInfo.builder()
|
|
.setOriginalNumber(numbertoTransform)
|
|
.setTransformedNumber(transformedNumber)
|
|
.setUserHomeCountryCode(userHomeCountryCode)
|
|
.setUserRoamingCountryCode(userRoamingCountryCode)
|
|
.setTransformedNumberCountryCallingCode(phoneNumber.getCountryCode())
|
|
.build());
|
|
}
|
|
}
|