/*
    * Trip Tracker, a real-time position tracking system for the Internet.
    * Copyright (C) 2006  Team Trip Tracker
    *
    * This program is free software; you can redistribute it and/or modify it
    * under the terms of the GNU General Public License as published by the
    * Free Software Foundation; either version 2 of the License, or (at your
    * option) any later version.
    *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
   */
  
  package triptracker.client.gps.ui;
  
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.util.TooManyListenersException;
  
  import javax.swing.event.ChangeEvent;
  import javax.swing.event.ChangeListener;
  
  import gnu.io.PortInUseException;
  import gnu.io.UnsupportedCommOperationException;
  
  import triptracker.client.gps.core.GPSClientModel;
  import triptracker.client.net.GPSSocketAdapter;
  import triptracker.core.Coordinate;
  
  /***
   * Map client controller for Model View Controller (MVC) separation.
   */
  public class MainFormController extends GPSSocketAdapter implements
  		ActionListener, ChangeListener {
  	private final GPSClientModel model;
  
  	private final MainForm view;
  
  	public MainFormController(GPSClientModel model, MainForm view) {
  		this.model = model;
  		this.view = view;
  
  		// Add listeners to the view.
  		view.addGPSBtnListener(this);
  		view.addServerBtnListener(this);
  		view.addSpinnerListener(this);
  		view.createTimer(this);
  
  		// Adds socketlistener
  		model.addSocketListener(this);
  	}
  
  	/***
  	 * Action is performed
  	 */
  	public void actionPerformed(ActionEvent event) {
  		// GPS button is clicked
  		if (event.getSource() == view.gpsButton) {
  			gpsButton();
  		}
  
  		// Server button is clicked
  		if (event.getSource() == view.serverButton) {
  			serverButton();
  		}
  
  		// Timer
  		if (event.getSource() == view.getTimer()) {
  			if (model.currCoordSet()) {
  				model.syncCoords();
  				view.setLastUpdateField(model.getCoordDate());
  				view.setLatLonFields(model.getStringLat(), model.getStringLon());
  				view.increaseRecievedField();					
  				if (model.getCurrentCoord() != null && model.getOldCoord() != null) {
  					view.setDistField(Coordinate.haversineDist(model.getOldCoord(), model.getCurrentCoord()));
  					System.out.println("calculating distance");
  				}	
  				if (model.getTransferState())
  					view.setStatusMsg("Transferring position to server");
  				else
  					view.setStatusMsg("Buffering position to file");
  				try {
  					model.saveCoord();
  				} catch (IOException e) {
  					view.setStatusMsg("Could not save the coordinate.");
  				}
  			} else {
  				view.setLatLonFields("--", "--");
  				view.setStatusMsg("GPS-unit does not have fixed position.");
  			}
  		}
 	}
 
 	// Listener for the intervalSpinner
 	public void stateChanged(ChangeEvent event) {
 		if (event.getSource() == view.intervalSpinner) {
 			model.setInterval(view.getInterval() * 1000);
 			System.out.println("New interval: " + model.getInterval());
 			view.getTimer().setDelay(view.getInterval() * 1000);
 		}
 	}
 
 	/***
 	 * A socket error has occured
 	 */
 	@Override
 	public void socketError(IOException e) {
 		view.setStatusMsg("Connection to server is lost");
 		view.showErrorDialog("Connection lost", "Connection to server lost!");
 		model.changeTransferState();
 	}
 
 	/***
 	 * Actions to perform when GPS button is clicked.
 	 */
 	private void gpsButton() {
 		model.changeGPSState();
 
 		if (model.getGPSState()) {
 			try {
 				if (!view.timerIsRunning()) {
 					view.startTimer();
 				}
 
 				if (!model.isConnectedToGPS()) {
 					model.openGPSPort();
 				}
 
 				model.startRecieveFromGPS();
 				view.recieveFromGPS();
 			} catch (PortInUseException e) {
 				view.setStatusMsg("!!: Port in use");
 			} catch (TooManyListenersException e) {
 				view.setStatusMsg("!!: Too Many listeners");
 			} catch (UnsupportedCommOperationException e) {
 				view.setStatusMsg("!!: Unsupported Comm opreation");
 			} catch (IOException e) {
 				view.setStatusMsg("!!: Problem recieve from GPS");
 			} catch (IllegalArgumentException e) {
 				view.setStatusMsg("!!: No valid ports found.");
 			}
 		} else {
 			try {
 				model.stopRecieveFromGPS();
 			} catch (IllegalArgumentException e) {
 				view.setStatusMsg("Error while trying to stop recieve from GPS-unit.");
 			} catch (PortInUseException e) {
 				view.setStatusMsg("Error: serial port is already in use.");
 			} catch (TooManyListenersException e) {
 				view.setStatusMsg("Error: port has too many listeners.");
 			} catch (UnsupportedCommOperationException e) {
 				view.setStatusMsg("Error while trying to stop recieve from GPS-unit.");
 			} catch (IOException e) {
 				view.setStatusMsg("Error while trying to stop recieve from GPS-unit.");
 			}
 			view.pauseFromGPS();
 		}
 	}
 
 	/***
 	 * Checks if buffered file exists, and transfers if true in the buffer
 	 * dialog.
 	 */
 	public void bufferFileExists() {
 		// Checks if there is buffered coordinates to transfer.
 		if (model.bufferFileExists() && model.getActiveRoute().getRouteId() != -1) {
 			if (!model.getAutoTransferState()) {
 				if (model.getTransferState())
 					model.changeTransferState();
 				if (!view.transferBufferedDialog()) {
 					try {
 						if (model.transferTmpCoords()) {
 							view.setStatusMsg("Buffered files sucessfully transferred");
 						}
 						view.transferToServer();
 						if (!model.getTransferState())
 							model.changeTransferState();
 					} catch (FileNotFoundException e) {
 						view.setStatusMsg("Buffer file now found");
 						view.showErrorDialog("Buffer file not found","The buffer file was not found");
 					} catch (IllegalStateException e) {
 						view.setStatusMsg("!!: Could not delete the buffer file");
 					} catch (IOException e) {
 						view.setStatusMsg("Something went wrong sending the buffered coordinates");
 					} 
 				} else {
 					if (model.getTransferState()) {
 						model.changeTransferState();
 					}
 					view.bufferToFile();
 					view.setStatusMsg("Buffer to file");
 					System.out.println("buffer to filee!");
 				}
 			} else {
 				try {		
 				if (model.transferTmpCoords()) {
 					view.setStatusMsg("Buffered files sucessfully transferred");
 				}
 				view.transferToServer();
 				if (!model.getTransferState())
 					model.changeTransferState();
 				} catch (FileNotFoundException e) {
 					view.setStatusMsg("Buffer file now found");
 					view.showErrorDialog("Buffer file not found","The buffer file was not found");
 				} catch (IllegalStateException e) {
 					view.setStatusMsg("!!: Could not delete the buffer file");
 				} catch (IOException e) {
 					view.setStatusMsg("Something went wrong sending the buffered coordinates");
 				} 
 			}
 
 		}
 	}
 
 	public void serverButton() {
 		if (model.isLoggedIn()) {
 			model.changeTransferState();
 
 			if (model.getTransferState()) {
 				view.transferToServer();
 			} else {
 				view.bufferToFile();
 			}
 
 			if (model.getTransferState()) {
 				if (model.getActiveRoute().getRouteId() == -1) {
 					view.showRoutes();
 					model.getRoutes(model.getUsername());
 					view.showErrorDialog("No rute set",
 							"No route set, please set route");
 				}
 
 				// Checks if buffered file exists
 				bufferFileExists();
 			}
 		} else {
 			view.showLogin();
 			view.setStatusMsg("Please connect before tranfer to server");
 		}
 	}
 }