/*
 * Copyright 2013 Research In Motion Limited.
 *
 * 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.
 */

/* global PluginResult */

module.exports = {
    getHeading: function (success, fail, args, env) {
        var result = new PluginResult(args, env),
            callback = function (orientation) {
                var info = {
                    magneticHeading: orientation.alpha,
                    trueHeading: 360-orientation.alpha,
                    headingAccuracy: 360-(2*orientation.alpha),
                    timestamp: new Date().getTime()
                };
                window.removeEventListener("deviceorientation", callback);
                result.callbackOk(info, false);
            };
        window.addEventListener("deviceorientation", callback);
        result.noResult(true);
    }
};