/*
 * eXist Open Source Native XML Database
 * Copyright (C) 2001-2015 The eXist Project
 * http://exist-db.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.exist.examples.xmlrpc;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
import org.exist.xmldb.XmldbURI;

/**
 * Example code for demonstrating XMLRPC methods upload and parseLocal.
 *
 * Execute: bin\run.bat org.exist.examples.xmlrpc.StoreChunked
 *
 * @author dizzzz
 */
public class StoreChunked {

    public static void main(final String args[]) {

        // Upload file to this uri:
        final String xmldbUri = "xmldb:exist://guest:guest@localhost:8080/exist/xmlrpc/db/admin2.png";
        final XmldbURI uri = XmldbURI.create(xmldbUri);

        // Construct url for xmlrpc, without collections / document
        // username/password yet hardcoded, need to update XmldbUri fir this
        final String url = "http://guest:guest@" + uri.getAuthority() + uri.getContext();
        final String path = uri.getCollectionPath();

        // TODO: Filename hardcoded
        final String filename = "webapp/resources/admin2.png";
        try(final InputStream fis = new FileInputStream(filename)) {
            // Setup xmlrpc client
            final XmlRpcClient client = new XmlRpcClient();
            final XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
            config.setServerURL(new URL(url));
            config.setBasicUserName("guest");
            config.setBasicPassword("guest");
            client.setConfig(config);

            // Initialize xmlrpc parameters
            final List<Object> params = new ArrayList<>();
            String handle = null;

            // Copy data from inputstream to database
            final byte[] buf = new byte[4096];
            int len = -1;
            while ((len = fis.read(buf)) > 0) {
                params.clear();
                if (handle != null) {
                    params.add(handle);
                }
                params.add(buf);
                params.add(len);
                handle = (String) client.execute("upload", params);
            }

            // All data transported, parse data on server
            params.clear();
            params.add(handle);
            params.add(path);
            params.add(true);
            params.add("image/png");
            final Boolean result = (Boolean) client.execute("parseLocal", params); // exceptions

            // Check result
            if (result) {
                System.out.println("document stored.");
            } else {
                System.out.println("could not store document.");
            }
        } catch (final XmlRpcException | IOException ex) {
            ex.printStackTrace();
        }
    }
}