package skrueger;

import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.regex.Pattern;

import org.jfree.util.Log;

import skrueger.geotools.io.GtDbServerSettings;
import skrueger.geotools.io.ServerSettings;

abstract public class AbstractServerList<T extends ServerSettings> extends
		ArrayList<T> implements ServerList<T> {
	/**
	 * Character used to separate the parameters when serializing settings to a
	 * String
	 */
	public static final String DELIMITER = "@";

	public AbstractServerList(T... wfss) {
		for (T wfs : wfss) {
			add(wfs);
		}
	}

	public AbstractServerList(String propertiesString) {
		parsePropertiesString(propertiesString);
	}

	/**
	 * @return transforms the settings to a String that can be stored in a
	 *         .properties line. @see #parsePropertiesString
	 * @throws MalformedURLException
	 */
	@Override
	public final boolean parsePropertiesString(String propString) {

		if (propString == null)
			return false;

		String[] split = propString.split(Pattern.quote(DELIMITER));

		for (String s : split) {
			try {
				T dbServer = newInstance();

				if (!dbServer.parsePropertiesString(s)) {
					Log.error("Could not import a "
							+ GtDbServerSettings.class.getSimpleName()
							+ ". Ignoring it.");
				} else
					add(dbServer);
			} catch (Exception e) {
				Log.error(
						"Could not import a "
								+ GtDbServerSettings.class.getSimpleName()
								+ ". Ignoring it.", e);
				return false;
			}
		}

		return true;
	}

	protected abstract T newInstance();

	/**
	 * @return transforms the settings to a String that can be stored in a
	 *         .properties line. @see #parsePropertiesString
	 */
	public final String toPropertiesString() {

		StringBuffer serialized = new StringBuffer(100);

		for (T wfs : this) {
			serialized.append(wfs.toPropertiesString());
			serialized.append(DELIMITER);
		}

		return serialized.toString();
	}

	@Override
	public boolean add(T e) {
		return super.add(e);
	}
}