com.daskiworks.ghwatch.backend.NotificationStreamParser.java Source code

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Here is the source code for com.daskiworks.ghwatch.backend.NotificationStreamParser.java

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/*
 * Copyright 2014 contributors as indicated by the @authors tag.
 * 
 * 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.daskiworks.ghwatch.backend;

import java.io.InvalidObjectException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.json.JSONArray;
import org.json.JSONObject;

import android.annotation.SuppressLint;
import android.util.Log;

import com.daskiworks.ghwatch.Utils;
import com.daskiworks.ghwatch.model.Notification;
import com.daskiworks.ghwatch.model.NotificationStream;

/**
 * Helper class used to parse {@link NotificationStream} from JSON data read from server.
 * 
 * @author Vlastimil Elias <vlastimil.elias@worldonline.cz>
 */
public class NotificationStreamParser {

    private static final String TAG = NotificationStreamParser.class.getSimpleName();
    @SuppressLint("SimpleDateFormat")
    private static SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssz");

    public static NotificationStream parseNotificationStream(JSONArray json) throws InvalidObjectException {
        NotificationStream ret = new NotificationStream();
        try {

            for (int i = 0; i < json.length(); i++) {
                JSONObject notification = json.getJSONObject(i);

                JSONObject subject = notification.getJSONObject("subject");
                JSONObject repository = notification.getJSONObject("repository");
                String updatedAtStr = Utils.trimToNull(notification.getString("updated_at"));
                Date updatedAt = null;
                try {
                    if (updatedAtStr != null) {
                        if (updatedAtStr.endsWith("Z"))
                            updatedAtStr = updatedAtStr.replace("Z", "GMT");
                        updatedAt = df.parse(updatedAtStr);
                    }
                } catch (ParseException e) {
                    Log.w(TAG, "Invalid date format for value: " + updatedAtStr);
                }

                ret.addNotification(new Notification(notification.getLong("id"), notification.getString("url"),
                        subject.getString("title"), subject.getString("type"), subject.getString("url"),
                        subject.getString("latest_comment_url"), repository.getString("full_name"),
                        repository.getJSONObject("owner").getString("avatar_url"), updatedAt,
                        notification.getString("reason")));

            }
        } catch (Exception e) {
            throw new InvalidObjectException("JSON message is invalid: " + e.getMessage());
        }
        return ret;
    }
}