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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 com.android.voicemail.impl;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build.VERSION_CODES;
import android.support.annotation.Nullable;
import android.telecom.PhoneAccountHandle;
import android.telephony.TelephonyManager;
import com.google.auto.value.AutoValue;
import java.util.Optional;
/** Identifies a carrier. */
@AutoValue
@TargetApi(VERSION_CODES.O)
@SuppressWarnings({"missingpermission", "AndroidApiChecker"})
public abstract class CarrierIdentifier {
public abstract String mccMnc();
/**
* Group ID Level 1. Used to identify MVNO(Mobile Virtual Network Operators) who subleases other
* carrier's network and share their mccMnc. MVNO should have a GID1 different from the host.
*/
public abstract String gid1();
/** Builder for the matcher */
@AutoValue.Builder
public abstract static class Builder {
public abstract Builder setMccMnc(String mccMnc);
public abstract Builder setGid1(String gid1);
public abstract CarrierIdentifier build();
}
public static Builder builder() {
return new AutoValue_CarrierIdentifier.Builder().setGid1("");
}
/** Create a identifier for a {@link PhoneAccountHandle}. Absent if the handle is not valid. */
public static Optional<CarrierIdentifier> forHandle(
Context context, @Nullable PhoneAccountHandle phoneAccountHandle) {
if (phoneAccountHandle == null) {
return Optional.empty();
}
TelephonyManager telephonyManager =
context
.getSystemService(TelephonyManager.class)
.createForPhoneAccountHandle(phoneAccountHandle);
if (telephonyManager == null) {
return Optional.empty();
}
String gid1 = telephonyManager.getGroupIdLevel1();
if (gid1 == null) {
gid1 = "";
}
return Optional.of(
builder().setMccMnc(telephonyManager.getSimOperator()).setGid1(gid1).build());
}
}
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