content: /*
   * Copyright (C) 2019 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.telephony.ims;
  
  import android.content.Context;
  import android.os.RemoteException;
  import android.os.ServiceManager;
  import android.telephony.ims.aidl.IRcs;
  
  /**
   * A wrapper class around RPC calls that {@link RcsMessageStore} APIs to minimize boilerplate code.
   *
   * @hide - not meant for public use
   */
  class RcsControllerCall {
      private final Context mContext;
  
      RcsControllerCall(Context context) {
          mContext = context;
      }
  
      <R> R call(RcsServiceCall<R> serviceCall) throws RcsMessageStoreException {
          IRcs iRcs = IRcs.Stub.asInterface(ServiceManager.getService(Context.TELEPHONY_RCS_SERVICE));
          if (iRcs == null) {
              throw new RcsMessageStoreException("Could not connect to RCS storage service");
          }
  
          try {
              return serviceCall.methodOnIRcs(iRcs, mContext.getOpPackageName());
          } catch (RemoteException exception) {
              throw new RcsMessageStoreException(exception.getMessage());
          }
      }
  
      void callWithNoReturn(RcsServiceCallWithNoReturn serviceCall)
              throws RcsMessageStoreException {
          call((iRcs, callingPackage) -> {
              serviceCall.methodOnIRcs(iRcs, callingPackage);
              return null;
          });
      }
  
      interface RcsServiceCall<R> {
          R methodOnIRcs(IRcs iRcs, String callingPackage) throws RemoteException;
      }
  
      interface RcsServiceCallWithNoReturn {
          void methodOnIRcs(IRcs iRcs, String callingPackage) throws RemoteException;
      }
  }
  