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/*
* Copyright (C) 2018 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 android.telecom;
import android.annotation.NonNull;
import android.annotation.SdkConstant;
import android.annotation.SystemApi;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import com.android.internal.telecom.IPhoneAccountSuggestionCallback;
import com.android.internal.telecom.IPhoneAccountSuggestionService;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Base class for service that allows system apps to suggest phone accounts for outgoing calls.
*
* Phone account suggestions allow OEMs to intelligently select phone accounts based on knowledge
* about the user's past behavior, carrier billing patterns, or other factors unknown to the AOSP
* Telecom system.
* OEMs who wish to provide a phone account suggestion service on their device should implement this
* service in an app that resides in the /system/priv-app/ directory on their device. For security
* reasons, the service's entry {@code AndroidManifest.xml} file must declare the
* {@link android.Manifest.permission.BIND_PHONE_ACCOUNT_SUGGESTION_SERVICE} permission:
* <pre>
* {@code
* <service android:name="your.package.YourServiceName"
* android:permission="android.permission.BIND_PHONE_ACCOUNT_SUGGESTION_SERVICE">
* <intent-filter>
* <action android:name="android.telecom.PhoneAccountSuggestionService"/>
* </intent-filter>
* </service>
* }
* </pre>
* Only one system app on each device may implement this service. If multiple system apps implement
* this service, none of them will be queried for suggestions.
* @hide
*/
@SystemApi
public class PhoneAccountSuggestionService extends Service {
/**
* The {@link Intent} that must be declared in the {@code intent-filter} element of the
* service's manifest entry.
*/
@SdkConstant(SdkConstant.SdkConstantType.SERVICE_ACTION)
public static final String SERVICE_INTERFACE = "android.telecom.PhoneAccountSuggestionService";
private IPhoneAccountSuggestionService mInterface = new IPhoneAccountSuggestionService.Stub() {
@Override
public void onAccountSuggestionRequest(IPhoneAccountSuggestionCallback callback,
String number) {
mCallbackMap.put(number, callback);
PhoneAccountSuggestionService.this.onAccountSuggestionRequest(number);
}
};
private final Map<String, IPhoneAccountSuggestionCallback> mCallbackMap =
new HashMap<>();
@Override
public IBinder onBind(Intent intent) {
return mInterface.asBinder();
}
/**
* The system calls this method during the outgoing call flow if it needs account suggestions.
*
* The implementer of this service must override this method to implement its account suggestion
* logic. After preparing the suggestions, the implementation of the service must call
* {@link #suggestPhoneAccounts(String, List)} to deliver the suggestions back to the system.
*
* Note that the system will suspend the outgoing call process after it calls this method until
* this service calls {@link #suggestPhoneAccounts}.
*
* @param number The phone number to provide suggestions for.
*/
public void onAccountSuggestionRequest(@NonNull String number) {}
/**
* The implementation of this service calls this method to deliver suggestions to the system.
*
* The implementation of this service must call this method after receiving a call to
* {@link #onAccountSuggestionRequest(String)}. If no suggestions are available, pass an empty
* list as the {@code suggestions} argument.
*
* @param number The phone number to provide suggestions for.
* @param suggestions The list of suggestions.
*/
public final void suggestPhoneAccounts(@NonNull String number,
@NonNull List<PhoneAccountSuggestion> suggestions) {
IPhoneAccountSuggestionCallback callback = mCallbackMap.remove(number);
if (callback == null) {
Log.w(this, "No suggestions requested for the number %s", Log.pii(number));
return;
}
try {
callback.suggestPhoneAccounts(number, suggestions);
} catch (RemoteException e) {
Log.w(this, "Remote exception calling suggestPhoneAccounts");
}
}
}
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