package se.unlogic.eagledns.zoneproviders.db.beans;

import java.io.IOException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xbill.DNS.DClass;
import org.xbill.DNS.Name;
import org.xbill.DNS.RRset;
import org.xbill.DNS.Record;
import org.xbill.DNS.SOARecord;
import org.xbill.DNS.Type;
import org.xbill.DNS.Zone;

import se.unlogic.standardutils.dao.annotations.DAOManaged;
import se.unlogic.standardutils.dao.annotations.Key;
import se.unlogic.standardutils.dao.annotations.OneToMany;
import se.unlogic.standardutils.dao.annotations.Table;
import se.unlogic.standardutils.xml.Elementable;
import se.unlogic.standardutils.xml.XMLElement;
import se.unlogic.standardutils.xml.XMLGenerator;

@XMLElement
@Table(name="zones")
public class DBZone implements Elementable{

	@DAOManaged(autoGenerated=true)
	@Key
	@XMLElement
	private Integer zoneID;

	@DAOManaged
	@XMLElement
	private String name;

	@DAOManaged
	@XMLElement
	private String dclass;

	@DAOManaged
	@XMLElement
	private Long ttl;

	@DAOManaged
	@XMLElement
	private String primaryDNS;

	@DAOManaged
	@XMLElement
	private String adminEmail;

	@DAOManaged
	@XMLElement
	private Long serial;

	@DAOManaged
	@XMLElement
	private Long refresh;

	@DAOManaged
	@XMLElement
	private Long retry;

	@DAOManaged
	@XMLElement
	private Long expire;

	@DAOManaged
	@XMLElement
	private Long minimum;

	@DAOManaged
	@OneToMany
	@XMLElement
	private List<DBRecord> records;

	@DAOManaged
	@XMLElement
	private boolean secondary;

	@DAOManaged
	@XMLElement
	private Timestamp downloaded;

	public DBZone() {

		super();
	}

	public DBZone(Zone zone, boolean secondary) {

		this.parse(zone, secondary);
	}

	public void parse(Zone zone, boolean secondary) {

		if(zone == null){

			this.ttl = null;
			this.adminEmail = null;
			this.serial = null;
			this.refresh = null;
			this.retry = null;
			this.expire = null;
			this.minimum = null;
			this.records = null;
			this.downloaded = null;

		}else{

			SOARecord soaRecord = zone.getSOA();

			this.name = soaRecord.getName().toString();
			this.dclass = DClass.string(soaRecord.getDClass());
			this.ttl = soaRecord.getTTL();
			this.primaryDNS = soaRecord.getHost().toString();
			this.adminEmail = soaRecord.getAdmin().toString();
			this.serial = soaRecord.getSerial();
			this.refresh = soaRecord.getRefresh();
			this.retry = soaRecord.getRetry();
			this.expire = soaRecord.getExpire();
			this.minimum = soaRecord.getMinimum();
			this.secondary = secondary;

			if(secondary){
				this.downloaded = new java.sql.Timestamp(System.currentTimeMillis());
			}

			this.records = new ArrayList<DBRecord>();

			Iterator<?> iterator = zone.iterator();

			while(iterator.hasNext()){

				RRset rRset = (RRset) iterator.next();

				Iterator<?> rrSetIterator = rRset.rrs();

				while(rrSetIterator.hasNext()){

					Record record = (Record) rrSetIterator.next();

					if(record.getType() == Type.SOA){
						continue;
					}

					this.records.add(new DBRecord(record, zone.getSOA().getName(), this.ttl));
				}
			}
		}
	}

	public String getName() {

		return name;
	}


	public void setName(String name) {

		this.name = name;
	}


	public String getDclass() {

		return dclass;
	}


	public void setDclass(String dclass) {

		this.dclass = dclass;
	}


	public Long getTtl() {

		return ttl;
	}


	public void setTtl(Long ttl) {

		this.ttl = ttl;
	}


	public String getPrimaryDNS() {

		return primaryDNS;
	}


	public void setPrimaryDNS(String primaryDns) {

		this.primaryDNS = primaryDns;
	}


	public String getAdminEmail() {

		return adminEmail;
	}


	public void setAdminEmail(String adminEmail) {

		this.adminEmail = adminEmail;
	}


	public Long getSerial() {

		return serial;
	}


	public void setSerial(Long serial) {

		this.serial = serial;
	}


	public Long getRefresh() {

		return refresh;
	}


	public void setRefresh(Long refresh) {

		this.refresh = refresh;
	}


	public Long getRetry() {

		return retry;
	}


	public void setRetry(Long retry) {

		this.retry = retry;
	}


	public Long getExpire() {

		return expire;
	}


	public void setExpire(Long expire) {

		this.expire = expire;
	}


	public Long getMinimum() {

		return minimum;
	}


	public void setMinimum(Long minimum) {

		this.minimum = minimum;
	}

	public List<DBRecord> getRecords() {

		return records;
	}


	public void setRecords(List<DBRecord> records) {

		this.records = records;
	}


	public Integer getZoneID() {

		return zoneID;
	}


	public void setZoneID(Integer zoneID) {

		this.zoneID = zoneID;
	}

	public Element toXML(Document doc) {

		return XMLGenerator.toXML(this, doc);
	}

	public Zone toZone() throws IOException{

		Name zoneName = Name.fromString(name);
		Name primaryNS = Name.fromString(this.primaryDNS);

		SOARecord soaRecord = new SOARecord(zoneName, DClass.value(dclass), ttl, primaryNS, Name.fromString(this.adminEmail), serial, refresh, retry, expire, minimum);

		//Record primaryNSRecord = Record.newRecord(primaryNS, Type.NS, DClass.value(dclass), ttl);

		int recordCount;

		if(this.records != null){

			recordCount = 1 + this.records.size();

		}else{

			recordCount = 1;
		}

		Record[] recordArray = new Record[recordCount];

		recordArray[0] = soaRecord;
		//recordArray[1] = primaryNSRecord;

		if(records != null){

			int pos = 1;

			for(DBRecord record : this.records){

				recordArray[pos] = record.getRecord(ttl,zoneName);

				pos++;
			}
		}

		return new Zone(zoneName,recordArray);
	}


	public boolean isSecondary() {

		return secondary;
	}


	public void setSecondary(boolean secondary) {

		this.secondary = secondary;
	}

	@Override
	public String toString() {

		return name + " (ID: " + zoneID + ")";
	}


	public Timestamp getDownloaded() {

		return downloaded;
	}


	public void setDownloaded(Timestamp zoneDownloaded) {

		this.downloaded = zoneDownloaded;
	}
}
