package org.gcube.informationsystem.collector.impl.utils;

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

import org.w3c.dom.Document;

/**
 * 
 * Reader for resource's metadata
 *
 * @author Manuele Simi (ISTI-CNR)
 *
 */
public class MetadataReader {

    private Document metadata;
    
    public MetadataReader(Document metadata) {
	this.metadata = metadata;
    }
    
    public String getType(){
	return this.metadata.getElementsByTagName("Type").item(0).getTextContent();
    }

    public String getSource() {
	return this.metadata.getElementsByTagName("Source").item(0).getTextContent();
    }

    public Calendar getTerminationTime() {
	//value is in seconds
	String value = this.metadata.getElementsByTagName("TerminationTime").item(0).getTextContent();
	Calendar now = new GregorianCalendar();
	now.setTimeZone(TimeZone.getTimeZone("GMT"));
	//add seconds to obtain the effective termination time
	now.add(Calendar.SECOND, Integer.valueOf(value));
	return now;
    }

    public String getGroupKey() {
	return this.metadata.getElementsByTagName("GroupKey").item(0).getTextContent();
    }

    public String getEntryKey() {
	return this.metadata.getElementsByTagName("EntryKey").item(0).getTextContent();
    }

    public String getKey() {
	return this.metadata.getElementsByTagName("Key").item(0).getTextContent();
    }
}