jahspotify.web.api.HistoryController.java Source code

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Here is the source code for jahspotify.web.api.HistoryController.java

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package jahspotify.web.api;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 *        or more contributor license agreements.  See the NOTICE file
 *        distributed with this work for additional information
 *        regarding copyright ownership.  The ASF licenses this file
 *        to you 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.
 */

import java.io.*;
import java.util.*;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.*;

import com.google.gson.Gson;
import jahspotify.storage.statistics.*;
import jahspotify.storage.statistics.TrackHistory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

/**
 * @author Johan Lindquist
 */
@Controller
public class HistoryController extends BaseController {
    @Autowired
    @Qualifier(value = "mongodb")
    private HistoricalStorage _historicalStorage;

    @RequestMapping(value = "/history/count", method = RequestMethod.GET, produces = "application/json")
    public void getHistoryCount(final HttpServletRequest httpServletRequest,
            final HttpServletResponse httpServletResponse) {
        final int count = _historicalStorage.getHistoryCount(null);
    }

    @RequestMapping(value = "/history", method = RequestMethod.GET)
    public void getHistory(final HttpServletResponse httpServletResponse,
            @RequestParam(value = "index", defaultValue = "0") int index,
            @RequestParam(value = "count", defaultValue = "${jahspotify.history.default-count}") int count) {
        final Collection<TrackHistory> history = _historicalStorage.getHistory(index, count, null);
        httpServletResponse.setContentType("application/json");
        serializeHistoryCursor(history, httpServletResponse);
    }

    public void serializeHistoryCursor(Collection<TrackHistory> historyCursor,
            HttpServletResponse httpServletResponse) {
        try {
            final ServletOutputStream httpOutputStream = httpServletResponse.getOutputStream();
            final BufferedWriter outputStream = new BufferedWriter(new OutputStreamWriter(httpOutputStream));
            outputStream.write("{");
            outputStream.write("\"count\":");
            outputStream.write("" + historyCursor.size());

            if (historyCursor.size() > 0) {
                Gson gson = new Gson();

                outputStream.write(",");
                outputStream.write("\"tracks\":[");

                for (Iterator<TrackHistory> iterator = historyCursor.iterator(); iterator.hasNext();) {
                    TrackHistory next = iterator.next();
                    outputStream.write(gson.toJson(toWebTrack(next)));
                    if (iterator.hasNext()) {
                        outputStream.write(",");
                    }
                    outputStream.flush();
                }

                /*
                                while (historyCursor.hasNext())
                                {
                outputStream.write(gson.toJson(toWebTrack(historyCursor.next())));
                if (historyCursor.hasNext())
                {
                    outputStream.write(",");
                }
                outputStream.flush();
                                }
                */
                outputStream.write("]");
            }
            outputStream.write("}");
            outputStream.flush();
            outputStream.close();
            httpOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private jahspotify.web.media.TrackHistory toWebTrack(final TrackHistory next) {
        jahspotify.web.media.TrackHistory trackHistory = new jahspotify.web.media.TrackHistory();
        trackHistory.setTrackLink(toWebLink(next.getTrackLink()));
        trackHistory.setQueue(toWebLink(next.getQueue()));
        BeanUtils.copyProperties(next, trackHistory, new String[] { "trackLink", "queue" });
        return trackHistory;
    }

    @RequestMapping(value = "/history", method = RequestMethod.POST, produces = "application/json", headers = "Accept=application/json")
    public void postHistory(final HttpServletRequest httpServletRequest,
            final HttpServletResponse httpServletResponse) {
    }

}