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 com.android.internal.telephony.ims;
  
  import static android.provider.Telephony.RcsColumns.RcsParticipantColumns.RCS_PARTICIPANT_ID_COLUMN;
  import static android.provider.Telephony.RcsColumns.RcsParticipantColumns.RCS_PARTICIPANT_URI;
  import static android.telephony.ims.RcsQueryContinuationToken.QUERY_CONTINUATION_TOKEN;
  
  import android.content.ContentResolver;
  import android.database.Cursor;
  import android.net.Uri;
  import android.os.Bundle;
  import android.os.RemoteException;
  import android.telephony.ims.RcsParticipantQueryResultParcelable;
  import android.telephony.ims.RcsQueryContinuationToken;
  
  import java.util.ArrayList;
  import java.util.List;
  
  class RcsParticipantQueryHelper {
      private final ContentResolver mContentResolver;
  
      RcsParticipantQueryHelper(ContentResolver contentResolver) {
          mContentResolver = contentResolver;
      }
  
      RcsParticipantQueryResultParcelable performParticipantQuery(Bundle bundle)
              throws RemoteException {
          RcsQueryContinuationToken continuationToken = null;
          List<Integer> participantList = new ArrayList<>();
  
          try (Cursor cursor = mContentResolver.query(RCS_PARTICIPANT_URI, null, bundle, null)) {
              if (cursor == null) {
                  throw new RemoteException("Could not perform participant query, bundle: " + bundle);
              }
  
              while (cursor.moveToNext()) {
                  participantList.add(
                          cursor.getInt(cursor.getColumnIndex(RCS_PARTICIPANT_ID_COLUMN)));
              }
  
              Bundle cursorExtras = cursor.getExtras();
              if (cursorExtras != null) {
                  continuationToken = cursorExtras.getParcelable(QUERY_CONTINUATION_TOKEN);
              }
          }
  
          return new RcsParticipantQueryResultParcelable(continuationToken, participantList);
      }
  
      static Uri getUriForParticipant(int participantId) {
          return Uri.withAppendedPath(RCS_PARTICIPANT_URI, Integer.toString(participantId));
      }
  }
  