package org.noreply.fancydress.directory;

import org.noreply.fancydress.directory.parser.*;
import org.noreply.fancydress.misc.Util;
import org.noreply.fancydress.status.*;
import java.util.*;
import java.text.ParseException;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * Base class for both DeliveryMBOXSection and DeliverySMTP Section.
 *
 * This is a base class for the DeliveryMBOXSection and the DeliverySMTP class.
 * Since both are very similar it makes sense to pool their functionality into
 * a single class from which both inheritate.
 *
 * @see ServerDescriptor
 */
public class DeliveryMBOXSMTPSection {
	private String name;

	/* Required */
	/**
	 * The version number of this section.
	 */
	private String version;
	/**
	 * The maximum message size (in Kb) that is accepted at this node.
	 */
	private int maximumSize;
	/**
	 * Whether this exit node allows user supplied From: lines.
	 */
	private boolean allowFrom;

	/**
	 * Construct a Delivery/MBOX or Delivery/SMTP section.
	 *
	 * @param section the section to parse.
	 * @throws Mix3BadServerUnrecognizedVersionException if the Version in the section is not recognized.
	 * @throws Mix3BadServerFormatException if the Section is syntactially invalid.
	 */
	public DeliveryMBOXSMTPSection(DirectorySection section)
		throws Mix3BadServerFormatException
	{
		name = section.getName();
		parseDeliveryMBOXSMTPSection(section);
	}

	/**
	 * Parse a Delivery/MBOX or the Delivery/SMTP section.
	 *
	 * @param section the section to parse.
	 * @throws Mix3BadServerUnrecognizedVersionException if the Version in the section is not recognized.
	 * @throws Mix3BadServerFormatException if the Section is syntactially invalid.
	 */
	private void parseDeliveryMBOXSMTPSection(DirectorySection section) throws Mix3BadServerFormatException {
		/* Check Version */
		DirectoryEntry entryVersion = section.getEntry("Version");
		if (entryVersion == null)
			throw new Mix3BadServerFormatException("Version not in " + name + " section");
		version = entryVersion.getValue();
		if (! version.equals("0.1"))
			/* We have to ignore unknown Versions */
			throw new Mix3BadServerUnrecognizedVersionException("Unrecognized " + name + " Version "+version);

		/* mandatory entries */
		DirectoryEntry entryMaximumSize = section.getEntry("Maximum-size");
		DirectoryEntry entryAllowFrom = section.getEntry("Allow-From");

		/* FIXME
		if (entryMaximumSize == null)
			throw new Mix3BadServerFormatException("Maximum-size not in " + name + " section");
		*/
		if (entryAllowFrom == null)
			throw new Mix3BadServerFormatException("Allow-From not in " + name + " section");


		/* FIXME
		try {
			Integer p = new Integer(entryMaximumSize.getValue());
			maximumSize = p.intValue();
		} catch (NumberFormatException e) {
			throw new Mix3BadServerFormatException("Maximum-size is not a valid integer in " + name + " section", e);
		};
		if (maximumSize < 32)
			throw new Mix3BadServerFormatException("Maximum-size is smaller than 32 in " + name + " section");
		*/

		try {
			allowFrom = Util.parseBoolean(entryAllowFrom.getValue());
		} catch (ParseException e) {
			throw new Mix3BadServerFormatException("Allow-From is not a valid boolean in " + name + " section", e);
		};
	}
}