APIImpl.java

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.beboj.server;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import org.openstreetmap.beboj.client.io.API;
import org.openstreetmap.beboj.shared.data.osm.SimpleDataSet;
import org.openstreetmap.beboj.shared.data.osm.UploadRequestData;
import org.openstreetmap.beboj.shared.data.osm.UploadResponseData;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.APIDataSet;
import org.openstreetmap.josm.data.Bounds;
import org.openstreetmap.josm.data.Preferences;
import org.openstreetmap.josm.data.osm.Changeset;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.PrimitiveId;
import org.openstreetmap.josm.data.osm.SimplePrimitiveId;
import org.openstreetmap.josm.data.projection.Mercator;
import org.openstreetmap.josm.io.DiffResultEntry;
import org.openstreetmap.josm_server.gui.io.UploadStrategySpecification;
import org.openstreetmap.josm_server.gui.progress.NullProgressMonitor;
import org.openstreetmap.josm_server.io.BoundingBoxDownloader;
import org.openstreetmap.josm_server.io.OsmServerWriter;
import org.openstreetmap.josm_server.io.OsmTransferException;
import org.openstreetmap.josm_server.io.auth.CredentialsManagerResponse;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

@SuppressWarnings("serial")
public class APIImpl extends RemoteServiceServlet implements API {

    @Override
    public String greetServer(String input)
            throws IllegalArgumentException {
        return String.format("Hi %s!", input);
    }

    @Override
    public SimpleDataSet downloadOsmData(double minlat, double minlon, double maxlat, double maxlon) {
        initialize();
        BoundingBoxDownloader down = new BoundingBoxDownloader(new Bounds(minlat, minlon, maxlat, maxlon));
        DataSet ds = null;
        try {
            ds = down.parseOsm(NullProgressMonitor.INSTANCE);
        } catch (OsmTransferException e) {
            e.printStackTrace();
            return null;
        }
        SimpleDataSet sds = SimpleDataSet.fromDataSet(ds);
        return sds;
    }

    @Override
    public UploadResponseData uploadOsmData(UploadRequestData request) {
        initialize();
        Map<String, String> csTags = new HashMap<String, String>();
        csTags.put("comment", request.changeSetComment);
        csTags.put("created_by", "Beboj alpha");
        Changeset cs = new Changeset();
        cs.setKeys(csTags);

        CredentialsManagerResponse credentials = new CredentialsManagerResponse();
        credentials.setUsername(request.username);
        credentials.setPassword(request.password.toCharArray());

        UploadResponseData response = new UploadResponseData();

        Map<PrimitiveId, DiffResultEntry> diffResults = null;

        OsmServerWriter writer = new OsmServerWriter();
        try {
            writer.uploadOsm(
                    new UploadStrategySpecification(),
                    request.data.allPrimitives(),
                    cs,
                    credentials,
                    NullProgressMonitor.INSTANCE
            );
        } catch (OsmTransferException e) {
            e.printStackTrace();
        } finally {
            if (writer != null) {
                diffResults = writer.getDiffResults();
            }
            writer = null;
        }
        if (diffResults != null) {
            response.diffResults = new HashMap<SimplePrimitiveId, DiffResultEntry>();
            for (Entry<PrimitiveId, DiffResultEntry> e : diffResults.entrySet()) {
                response.diffResults.put(new SimplePrimitiveId(e.getKey().getUniqueId(), e.getKey().getType()), e.getValue());
            }
        }
        return response;
    }

    private void initialize() {
        if (Main.pref == null) {
            Main.pref = new Preferences();
            Main.pref.put("osm-server.url", "http://api06.dev.openstreetmap.org/api");
        }
        if (Main.proj == null) {
            Main.proj = new Mercator();
        }
        if (Main.main == null) {
            Main.main = new Main();
        }
    }
}