/*******************************************************************************
 * Copyright (c) 2018 Politecnico di Torino and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Apache License, Version 2.0
 * which accompanies this distribution, and is available at
 * http://www.apache.org/licenses/LICENSE-2.0
 *******************************************************************************/
package it.polito.verigraph.tosca.serializer;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;

import it.polito.tosca.jaxb.Configuration;

//Custom serializer for XmlToscaConfigurationObject conversion to JSON
public class XmlConfigSerializer extends StdSerializer<Configuration> {

    //Automatically generated VersionUID
    private static final long serialVersionUID = 9102508941195129607L;

    public XmlConfigSerializer() {
        this(null);
    }

    public XmlConfigSerializer(Class<Configuration> t) {
        super(t);
    }

    @Override
    public void serialize(
            Configuration value, JsonGenerator jgen, SerializerProvider provider)
                    throws IOException, JsonProcessingException {

        if (value.getAntispamConfiguration() != null) {
            jgen.writeStartArray();
            for(String source : value.getAntispamConfiguration().getSource()) {
                jgen.writeString(source);
            }
            jgen.writeEndArray();

        } else if (value.getCacheConfiguration() != null) {
            jgen.writeStartArray();
            for(String resource : value.getCacheConfiguration().getResource()) {
                jgen.writeString(resource);
            }
            jgen.writeEndArray();

        } else if (value.getDpiConfiguration() != null) {
            jgen.writeStartArray();
            for(String notAllowed : value.getDpiConfiguration().getNotAllowed()) {
                jgen.writeString(notAllowed);
            }
            jgen.writeEndArray();

        } else if (value.getEndhostConfiguration() != null) {
            jgen.writeStartArray();
            jgen.writeStartObject();

            Configuration.EndhostConfiguration endhost = value.getEndhostConfiguration();
            if (endhost.getBody() != null) jgen.writeObjectField("body", endhost.getBody());
            if (endhost.getSequence() != null) jgen.writeObjectField("sequence", endhost.getSequence());
            if (endhost.getProtocol() != null) jgen.writeObjectField("protocol", endhost.getProtocol());
            if (endhost.getEmailFrom() != null) jgen.writeObjectField("email_from", endhost.getEmailFrom());
            if (endhost.getUrl() != null) jgen.writeObjectField("url", endhost.getUrl());
            if (endhost.getOptions() != null) jgen.writeObjectField("options", endhost.getOptions());
            if (endhost.getDestination() != null) jgen.writeObjectField("destination", endhost.getDestination());

            jgen.writeEndObject();
            jgen.writeEndArray();

        } else if (value.getEndpointConfiguration() != null) {
            jgen.writeStartArray();
            jgen.writeEndArray();

        } else if (value.getFieldmodifierConfiguration() != null) {
            jgen.writeStartArray();
            jgen.writeEndArray();

        } else if (value.getFirewallConfiguration() != null) {
            jgen.writeStartArray();

            for(Configuration.FirewallConfiguration.Elements elem : value.getFirewallConfiguration().getElements()) {
                if ((elem.getSource() != null) && (elem.getDestination() != null)) {
                    jgen.writeStartObject();
                    jgen.writeObjectField(elem.getSource(), elem.getDestination());
                    jgen.writeEndObject();
                }
            }

            jgen.writeEndArray();

        } else if (value.getMailclientConfiguration() != null) {
            jgen.writeStartArray();

            if (value.getMailclientConfiguration().getMailserver() != null) {
                jgen.writeStartObject();
                jgen.writeObjectField("mailserver", value.getMailclientConfiguration().getMailserver());
                jgen.writeEndObject();
            }

            jgen.writeEndArray();

        } else if (value.getMailserverConfiguration() != null) {
            jgen.writeStartArray();
            jgen.writeEndArray();

        } else if (value.getNatConfiguration() != null) {
            jgen.writeStartArray();
            for(String source : value.getNatConfiguration().getSource()) {
                jgen.writeString(source);
            }
            jgen.writeEndArray();

        } else if (value.getVpnaccessConfiguration() != null) {
            jgen.writeStartArray();

            if (value.getVpnaccessConfiguration().getVpnexit()!= null) {
                jgen.writeStartObject();
                jgen.writeObjectField("vpnexit", value.getVpnaccessConfiguration().getVpnexit());
                jgen.writeEndObject();
            }

            jgen.writeEndArray();

        } else if (value.getVpnexitConfiguration() != null) {
            jgen.writeStartArray();

            if (value.getVpnexitConfiguration().getVpnaccess()!= null) {
                jgen.writeStartObject();
                jgen.writeObjectField("vpnaccess", value.getVpnexitConfiguration().getVpnaccess());
                jgen.writeEndObject();
            }

            jgen.writeEndArray();

        } else if (value.getWebclientConfiguration() != null) {
            jgen.writeStartArray();

            if (value.getWebclientConfiguration().getNameWebServer() != null) {
                jgen.writeStartObject();
                jgen.writeObjectField("webserver", value.getWebclientConfiguration().getNameWebServer());
                jgen.writeEndObject();
            }

            jgen.writeEndArray();

        } else if (value.getWebserverConfiguration() != null) {
            jgen.writeStartArray();
            jgen.writeEndArray();

        } else {
            //Case of empty Configuration
            jgen.writeStartArray();
            jgen.writeEndArray();
        }

    }
}