/*
 * Copyright 2014 Google Inc. All Rights Reserved.
 *
 * 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.projecttango.experiments.nativemotiontracking;

import android.util.Log;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;

// Util class provides handy utility functions.
public class Util {
  
  // Checks if the calling app has the specified permission.
  // It is recommended that an app check if it has a permission before trying
  // to request it; this will save time by avoiding re-requesting permissions
  // that have already been granted.
  
  // @param context The context of the calling app.
  // @param permissionType The type of permission to request; either
  // PERMISSIONTYPE_MOTION_TRACKING or PERMISSIONTYPE_ADF_LOAD_SAVE.
  // @return boolean Whether or not the permission was already granted.
  public static boolean hasPermission(Context context, String permissionType){
    Uri uri = Uri.parse("content://com.google.atap.tango.PermissionStatusProvider/" +
        permissionType);
    Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
    if (cursor == null) {
      return false;
    } else {
      return true;
    }
  }
}