/**
 *
 * Copyright 2003-2007 Jive Software.
 *
 * 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 org.jivesoftware.smackx.workgroup.ext.macros;

import java.io.IOException;

import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.IqData;
import org.jivesoftware.smack.packet.XmlEnvironment;
import org.jivesoftware.smack.provider.IqProvider;
import org.jivesoftware.smack.util.PacketParserUtils;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smack.xml.XmlPullParser;
import org.jivesoftware.smack.xml.XmlPullParserException;

/**
 * Macros iq is responsible for handling global and personal macros in the a Live Assistant
 * Workgroup.
 */
public class Macros extends IQ {

    /**
     * Element name of the stanza extension.
     */
    public static final String ELEMENT_NAME = "macros";

    /**
     * Namespace of the stanza extension.
     */
    public static final String NAMESPACE = "http://jivesoftware.com/protocol/workgroup";

    private MacroGroup rootGroup;
    private boolean personal;
    private MacroGroup personalMacroGroup;

    public Macros() {
        super(ELEMENT_NAME, NAMESPACE);
    }

    public MacroGroup getRootGroup() {
        return rootGroup;
    }

    public void setRootGroup(MacroGroup rootGroup) {
        this.rootGroup = rootGroup;
    }

    public boolean isPersonal() {
        return personal;
    }

    public void setPersonal(boolean personal) {
        this.personal = personal;
    }

    public MacroGroup getPersonalMacroGroup() {
        return personalMacroGroup;
    }

    public void setPersonalMacroGroup(MacroGroup personalMacroGroup) {
        this.personalMacroGroup = personalMacroGroup;
    }

    @Override
    protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder buf) {
        buf.rightAngleBracket();

        if (isPersonal()) {
            buf.append("<personal>true</personal>");
        }
        if (getPersonalMacroGroup() != null) {
            buf.append("<personalMacro>");
            buf.append(StringUtils.escapeForXmlText(getPersonalMacroGroup().toXML()));
            buf.append("</personalMacro>");
        }

        return buf;
    }

    /**
     * An IQProvider for Macro packets.
     *
     * @author Derek DeMoro
     */
    public static class InternalProvider extends IqProvider<Macros> {

        @Override
        public Macros parse(XmlPullParser parser, int initialDepth, IqData iqData, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException {
            Macros macroGroup = new Macros();

            boolean done = false;
            while (!done) {
                XmlPullParser.Event eventType = parser.next();
                if (eventType == XmlPullParser.Event.START_ELEMENT) {
                    if (parser.getName().equals("model")) {
                        String macros = parser.nextText();
                        MacroGroup group = parseMacroGroups(macros);
                        macroGroup.setRootGroup(group);
                    }
                }
                else if (eventType == XmlPullParser.Event.END_ELEMENT) {
                    if (parser.getName().equals(ELEMENT_NAME)) {
                        done = true;
                    }
                }
            }

            return macroGroup;
        }

        public Macro parseMacro(XmlPullParser parser) throws XmlPullParserException, IOException {
            Macro macro = new Macro();
             boolean done = false;
            while (!done) {
                XmlPullParser.Event eventType = parser.next();
                if (eventType == XmlPullParser.Event.START_ELEMENT) {
                    if (parser.getName().equals("title")) {
                        parser.next();
                        macro.setTitle(parser.getText());
                    }
                    else if (parser.getName().equals("description")) {
                        macro.setDescription(parser.nextText());
                    }
                    else if (parser.getName().equals("response")) {
                        macro.setResponse(parser.nextText());
                    }
                    else if (parser.getName().equals("type")) {
                        macro.setType(Integer.valueOf(parser.nextText()).intValue());
                    }
                }
                else if (eventType == XmlPullParser.Event.END_ELEMENT) {
                    if (parser.getName().equals("macro")) {
                        done = true;
                    }
                }
            }
            return macro;
        }

        public MacroGroup parseMacroGroup(XmlPullParser parser) throws XmlPullParserException, IOException {
            MacroGroup group = new MacroGroup();

            boolean done = false;
            while (!done) {
                XmlPullParser.Event eventType = parser.next();
                if (eventType == XmlPullParser.Event.START_ELEMENT) {
                    if (parser.getName().equals("macrogroup")) {
                        group.addMacroGroup(parseMacroGroup(parser));
                    }
                    if (parser.getName().equals("title")) {
                        group.setTitle(parser.nextText());
                    }
                    if (parser.getName().equals("macro")) {
                        group.addMacro(parseMacro(parser));
                    }
                }
                else if (eventType == XmlPullParser.Event.END_ELEMENT) {
                    if (parser.getName().equals("macrogroup")) {
                        done = true;
                    }
                }
            }
            return group;
        }

        public MacroGroup parseMacroGroups(String macros) throws XmlPullParserException, IOException {
            MacroGroup group = null;
            XmlPullParser parser = PacketParserUtils.getParserFor(macros);

            XmlPullParser.Event eventType = parser.getEventType();
            while (eventType != XmlPullParser.Event.END_DOCUMENT) {
                eventType = parser.next();
                 if (eventType == XmlPullParser.Event.START_ELEMENT) {
                        if (parser.getName().equals("macrogroup")) {
                            group = parseMacroGroup(parser);
                        }
                 }
            }
            return group;
        }
    }
}
