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/*
 * TeleStax, Open Source Cloud Communications
 * Copyright 2011-2014, Telestax Inc and individual contributors
 * by the @authors tag.
 *
 * This program is free software: you can redistribute it and/or modify
 * under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation; either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see 
 *
 */
package org.restcomm.connect.http.converter;

import java.lang.reflect.Type;
import java.net.URI;

import org.apache.commons.configuration.Configuration;
import org.joda.time.DateTime;
import org.restcomm.connect.commons.annotations.concurrency.ThreadSafe;
import org.restcomm.connect.dao.entities.Notification;

import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

/**
 * @author [email protected] (Thomas Quintana)
 */
@ThreadSafe
public final class NotificationConverter extends AbstractConverter implements JsonSerializer {
    public NotificationConverter(final Configuration configuration) {
        super(configuration);
    }

    @SuppressWarnings("rawtypes")
    @Override
    public boolean canConvert(final Class klass) {
        return Notification.class.equals(klass);
    }

    @Override
    public void marshal(final Object object, final HierarchicalStreamWriter writer, final MarshallingContext context) {
        final Notification notification = (Notification) object;
        writer.startNode("Notification");
        writeSid(notification.getSid(), writer);
        writeDateCreated(notification.getDateCreated(), writer);
        writeDateUpdated(notification.getDateUpdated(), writer);
        writeAccountSid(notification.getAccountSid(), writer);
        writeCallSid(notification.getCallSid(), writer);
        writeApiVersion(notification.getApiVersion(), writer);
        writeLog(notification.getLog(), writer);
        writeErrorCode(notification.getErrorCode(), writer);
        writeMoreInfo(notification.getMoreInfo(), writer);
        writeMessageText(notification.getMessageText(), writer);
        writeMessageDate(notification.getMessageDate(), writer);
        writeRequestUrl(notification.getRequestUrl(), writer);
        writeRequestMethod(notification.getRequestMethod(), writer);
        writeRequestVariables(notification.getRequestVariables(), writer);
        writeResponseHeaders(notification.getResponseHeaders(), writer);
        writeResponseBody(notification.getResponseBody(), writer);
        writeUri(notification.getUri(), writer);
        writer.endNode();
    }

    @Override
    public JsonElement serialize(final Notification notification, final Type type, final JsonSerializationContext context) {
        final JsonObject object = new JsonObject();
        writeSid(notification.getSid(), object);
        writeDateCreated(notification.getDateCreated(), object);
        writeDateUpdated(notification.getDateUpdated(), object);
        writeAccountSid(notification.getAccountSid(), object);
        writeCallSid(notification.getCallSid(), object);
        writeApiVersion(notification.getApiVersion(), object);
        writeLog(notification.getLog(), object);
        writeErrorCode(notification.getErrorCode(), object);
        writeMoreInfo(notification.getMoreInfo(), object);
        writeMessageText(notification.getMessageText(), object);
        writeMessageDate(notification.getMessageDate(), object);
        writeRequestUrl(notification.getRequestUrl(), object);
        writeRequestMethod(notification.getRequestMethod(), object);
        writeRequestVariables(notification.getRequestVariables(), object);
        writeResponseHeaders(notification.getResponseHeaders(), object);
        writeResponseBody(notification.getResponseBody(), object);
        writeUri(notification.getUri(), object);
        return object;
    }

    private void writeErrorCode(final int errorCode, final HierarchicalStreamWriter writer) {
        writer.startNode("ErrorCode");
        writer.setValue(Integer.toString(errorCode));
        writer.endNode();
    }

    private void writeErrorCode(final int errorCode, final JsonObject object) {
        object.addProperty("error_code", errorCode);
    }

    private void writeLog(final int log, final HierarchicalStreamWriter writer) {
        writer.startNode("Log");
        writer.setValue(Integer.toString(log));
        writer.endNode();
    }

    private void writeLog(final int log, final JsonObject object) {
        object.addProperty("log", log);
    }

    private void writeMessageDate(final DateTime messageDate, final HierarchicalStreamWriter writer) {
        writer.startNode("MessageDate");
        writer.setValue(messageDate.toString());
        writer.endNode();
    }

    private void writeMessageDate(final DateTime messageDate, final JsonObject object) {
        object.addProperty("message_date", messageDate.toString());
    }

    private void writeMessageText(final String messageText, final HierarchicalStreamWriter writer) {
        writer.startNode("MessageText");
        if (messageText != null) {
            writer.setValue(messageText);
        }
        writer.endNode();
    }

    private void writeMessageText(final String messageText, final JsonObject object) {
        if (messageText != null) {
            object.addProperty("message_text", messageText);
        } else {
            object.add("message_text", JsonNull.INSTANCE);
        }
    }

    private void writeMoreInfo(final URI moreInfo, final HierarchicalStreamWriter writer) {
        writer.startNode("MoreInfo");
        writer.setValue(moreInfo.toString());
        writer.endNode();
    }

    private void writeMoreInfo(final URI moreInfo, final JsonObject object) {
        object.addProperty("more_info", moreInfo.toString());
    }

    private void writeRequestUrl(final URI requestUrl, final HierarchicalStreamWriter writer) {
        writer.startNode("RequestUrl");
        writer.setValue(requestUrl.toString());
        writer.endNode();
    }

    private void writeRequestUrl(final URI requestUrl, final JsonObject object) {
        object.addProperty("request_url", requestUrl.toString());
    }

    private void writeRequestMethod(final String requestMethod, final HierarchicalStreamWriter writer) {
        writer.startNode("RequestMethod");
        writer.setValue(requestMethod);
        writer.endNode();
    }

    private void writeRequestMethod(final String requestMethod, final JsonObject object) {
        object.addProperty("request_method", requestMethod);
    }

    private void writeRequestVariables(final String requestVariables, final HierarchicalStreamWriter writer) {
        writer.startNode("RequestVariables");
        if (requestVariables != null) {
            writer.setValue(requestVariables);
        }
        writer.endNode();
    }

    private void writeRequestVariables(final String requestVariables, final JsonObject object) {
        if (requestVariables != null) {
            object.addProperty("request_variables", requestVariables);
        } else {
            object.add("request_variables", JsonNull.INSTANCE);
        }
    }

    private void writeResponseHeaders(final String responseHeaders, final HierarchicalStreamWriter writer) {
        writer.startNode("ResponseHeaders");
        if (responseHeaders != null) {
            writer.setValue(responseHeaders);
        }
        writer.endNode();
    }

    private void writeResponseHeaders(final String responseHeaders, final JsonObject object) {
        if (responseHeaders != null) {
            object.addProperty("response_headers", responseHeaders);
        } else {
            object.add("response_headers", JsonNull.INSTANCE);
        }
    }

    private void writeResponseBody(final String responseBody, final HierarchicalStreamWriter writer) {
        writer.startNode("ResponseBody");
        if (responseBody != null) {
            writer.setValue(responseBody);
        }
        writer.endNode();
    }

    private void writeResponseBody(final String responseBody, final JsonObject object) {
        if (responseBody != null) {
            object.addProperty("response_body", responseBody);
        } else {
            object.add("response_body", JsonNull.INSTANCE);
        }
    }
}