package com.nilhcem.fakesmtp.model;
   
   import com.nilhcem.fakesmtp.core.I18n;
   import com.nilhcem.fakesmtp.core.exception.BindPortException;
   import com.nilhcem.fakesmtp.core.exception.InvalidHostException;
   import com.nilhcem.fakesmtp.core.exception.InvalidPortException;
   import com.nilhcem.fakesmtp.core.exception.OutOfRangePortException;
   import com.nilhcem.fakesmtp.server.SMTPServerHandler;
   
  import java.net.InetAddress;
  import java.net.UnknownHostException;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * UI presentation model of the application.
   * <p>
   * The essence of a Presentation Model is of a fully self-contained class that represents all the data
   * and behavior of the UI window, but without any of the controls used to render that UI on the screen.
   * </p>
   *
   * @author Nilhcem
   * @since 1.0
   * @see <a href="link">http://martinfowler.com/eaaDev/PresentationModel.html</a>
   */
  public enum UIModel {
  	INSTANCE;
  
  	private boolean started = false; // server is not started by default
  	private String portStr;
  	private String hostStr;
  	private int nbMessageReceived = 0;
  	private String savePath = I18n.INSTANCE.get("emails.default.dir");
  	private final Map<Integer, String> listMailsMap = new HashMap<Integer, String>();
  	private List<String> relayDomains;
  
  	UIModel() {
  	}
  
  	/**
  	 * Happens when a user clicks on the start button.
  	 * <p>
  	 * This method will notify the {@code SMTPServerHandler} to start the server.
  	 * </p>
  	 *
  	 * @throws InvalidPortException when the port is invalid.
  	 * @throws BindPortException when the port cannot be bound.
  	 * @throws OutOfRangePortException when the port is out of range.
  	 * @throws InvalidHostException when the address cannot be resolved.
  	 * @throws RuntimeException when an unknown exception happened.
  	 */
  	public void toggleButton() throws BindPortException, OutOfRangePortException, InvalidPortException, InvalidHostException {
  		if (started) {
  			// Do nothing. We can't stop the server. User has to quit the app (issue with SubethaSMTP)
  		} else {
  			try {
  				int port = Integer.parseInt(portStr);
  				InetAddress host = null;
  				if (hostStr != null && !hostStr.isEmpty()) {
  					host = InetAddress.getByName(hostStr);
  				}
  
  				SMTPServerHandler.INSTANCE.startServer(port, host);
  			} catch (NumberFormatException e) {
  				throw new InvalidPortException(e);
  			} catch	(UnknownHostException e) {
  				throw new InvalidHostException(e, hostStr);
  			}
  		}
  		started = !started;
  	}
  
  	/**
  	 * Returns {@code true} if the server is started.
  	 *
  	 * @return {@code true} if the server is started.
  	 */
  	public boolean isStarted() {
  		return started;
  	}
  
  	public void setPort(String port) {
  		this.portStr = port;
  	}
  
  	public void setHost(String host) {
  		this.hostStr = host;
  	}
  
  	public int getNbMessageReceived() {
  		return nbMessageReceived;
  	}
  
  	public void setNbMessageReceived(int nbMessageReceived) {
  		this.nbMessageReceived = nbMessageReceived;
  	}
  
  	public String getSavePath() {
 		return savePath;
 	}
 
 	public void setSavePath(String savePath) {
 		this.savePath = savePath;
 	}
 
 	public Map<Integer, String> getListMailsMap() {
 		return listMailsMap;
 	}
 
 	public List<String> getRelayDomains() {
 		return relayDomains;
 	}
 
 	public void setRelayDomains(List<String> relayDomains) {
 		this.relayDomains = relayDomains;
 	}
 }