[Settings] Move mobile data template out of framework

Move mobile data template out of framework

Bug: 151751844
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=DataUsageLibTest
Change-Id: I5072cd1e673194d00b3ce82242bf5fbad88d23cd

src/com/android/settings/datausage/lib/DataUsageLib.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 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.settings.datausage.lib;
+
+import android.content.Context;
+import android.net.NetworkTemplate;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.util.Log;
+
+import com.android.internal.util.ArrayUtils;
+
+import java.util.List;
+
+/**
+ * Lib class for data usage
+ */
+public class DataUsageLib {
+    private static final String TAG = "DataUsageLib";
+
+    /**
+     * Return mobile NetworkTemplate based on {@code subId}
+     */
+    public static NetworkTemplate getMobileTemplate(Context context, int subId) {
+        final TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
+        final int mobileDefaultSubId = telephonyManager.getSubscriptionId();
+
+        final SubscriptionManager subscriptionManager =
+                context.getSystemService(SubscriptionManager.class);
+        final List<SubscriptionInfo> subInfoList =
+                subscriptionManager.getAvailableSubscriptionInfoList();
+        if (subInfoList == null) {
+            Log.i(TAG, "Subscription is not inited: " + subId);
+            return getMobileTemplateForSubId(telephonyManager, mobileDefaultSubId);
+        }
+
+        for (SubscriptionInfo subInfo : subInfoList) {
+            if ((subInfo != null) && (subInfo.getSubscriptionId() == subId)) {
+                return getNormalizedMobileTemplate(telephonyManager, subId);
+            }
+        }
+        Log.i(TAG, "Subscription is not active: " + subId);
+        return getMobileTemplateForSubId(telephonyManager, mobileDefaultSubId);
+    }
+
+    private static NetworkTemplate getNormalizedMobileTemplate(
+            TelephonyManager telephonyManager, int subId) {
+        final NetworkTemplate mobileTemplate = getMobileTemplateForSubId(telephonyManager, subId);
+        final String[] mergedSubscriberIds = telephonyManager
+                .createForSubscriptionId(subId).getMergedImsisFromGroup();
+        if (ArrayUtils.isEmpty(mergedSubscriberIds)) {
+            Log.i(TAG, "mergedSubscriberIds is null.");
+            return mobileTemplate;
+        }
+
+        return NetworkTemplate.normalize(mobileTemplate, mergedSubscriberIds);
+    }
+
+    private static NetworkTemplate getMobileTemplateForSubId(
+            TelephonyManager telephonyManager, int subId) {
+        return NetworkTemplate.buildTemplateMobileAll(telephonyManager.getSubscriberId(subId));
+    }
+}