package cadastre_fr;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.LinkedList;

import javax.swing.JCheckBoxMenuItem;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.KeyStroke;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.JosmAction;
import org.openstreetmap.josm.actions.UploadAction;
import org.openstreetmap.josm.actions.UploadAction.UploadHook;
import org.openstreetmap.josm.gui.IconToggleButton;
import org.openstreetmap.josm.gui.MapFrame;
import org.openstreetmap.josm.gui.preferences.PreferenceSetting;
import org.openstreetmap.josm.plugins.Plugin;
import org.openstreetmap.josm.data.projection.Lambert;

/**
 * 
 * Plugin to access the french Cadastre WMS server at www.cadastre.gouv.fr This
 * WMS server requires some specific handling like retrieving a cookie for a
 * limitation in case of no activity, or the request to the server shall provide
 * a city/town/village code.
 * 
 * @author Pieren <pieren3@gmail.com>, 
 * @author <matthieu.lochegnies@gmail.com> for the extension to codeCommune
 * @version 0.8
 * History: 
 * 0.1 17-Jun-2008 first prototype using a first Lambert projection impl. in core 
 * 0.2 22-Jun-2008 first stable version
 * 0.3 24-Jun-2008 add code departement
 * 0.4 06-Jul-2008 - add images scales, icons, menu items disabling
 *                 - remove dependencies of wmsplugin
 *                 - add option to force a Lambert zone (for median locations)
 *                 - add auto-sourcing
 * 0.5 16-Aug-2008 - add transparency in layer (allowing multiple wms layers displayed together) 
 *                 - no overlapping of grabbed images if transparency is enabled
 *                 - set one layer per location
 *                 - use utf-8 charset in POST request to server
 *                 - improve the preferences setting dialog
 *                 - cancel the current download is now possible
 *                 - add automatic images caching and load on request (+ manage cache directory size)
 *                 - enable auto-sourcing only if a WMS layer is used
 * 0.6 18-Aug-2008 - suppress the null-exception message after the dialog 'open a layer first'
 *                 - process the overlapping images when cache is loaded from disk
 *                 - save the last 'new location request' text again in preferences
 *                 - avoid duplicate layers with same name
 *                 - set text input for new locations in upper case
 *                 - the cache directory is configurable in "cadastrewms.cacheDir"
 *                 - improve configuration change updates
 * 0.7 24-Aug-2008 - mask images only if transparency enabled
 *                 - validate projection name by Lambert.toString() method
 * 0.8 25-Jan-2009 - display returned list of communes if direct name is not recognized by server
 *                 - new possible grab factor of 100 square meters fixed size                     
 *                 - minor fixes due to changes in JOSM core classes
 *                 - first draft of raster image support 
 * 0.9 05-Feb-2009 - grab vectorized full commune bbox, save in file, convert to OSM way
 *                   and simplify
 * 1.0 05-Feb-2009 - fix various bugs
 */
public class CadastrePlugin extends Plugin {
    static String VERSION = "1.0";

    static JMenu cadastreJMenu;

    public static CadastreGrabber cadastreGrabber = new CadastreGrabber();

    public static String source = "";
    
    // true if the checkbox "auto-sourcing" is set in the plugin menu
    public static boolean autoSourcing = false;
    
    // true when the plugin is first used, e.g. grab from WMS or download cache file
    public static boolean pluginUsed = false;
    
    public static String cacheDir = null;
    
    public static boolean alterColors = false;
    
    public static String colorBackground;

    public static boolean backgroundTransparent = false;
    
    public static float transparency = 1.0f;
    
    public static boolean drawBoundaries = false;
    
    static private boolean menuEnabled = false;

    /**
     * Creates the plugin and setup the default settings if necessary
     * 
     * @throws Exception
     */
    public CadastrePlugin() throws Exception {
        System.out.println("Pluging \"french cadastre\" started...");
        if (Main.proj.toString().equals(new Lambert().toString()) != true) {
            JOptionPane.showMessageDialog(Main.parent,
                    tr("To enable the cadastre WMS plugin, change\nthe JOSM projection to Lambert and restart"));
            return;
        }
        if (Main.pref.get("cadastrewms.cacheDir").equals(""))
            cacheDir = Main.pref.getPreferencesDir()+"plugins/cadastrewms/";
        else {
            cacheDir = Main.pref.get("cadastrewms.cacheDir");
            if (cacheDir.charAt(cacheDir.length()-1) != '\\' )
                cacheDir += '\\';
        }
        System.out.println("current cache directory: "+cacheDir);

        refreshConfiguration();
        refreshMenu();

        // add a hook at uploading to insert/verify the source=cadastre tag
        LinkedList<UploadHook> hooks = ((UploadAction) Main.main.menu.upload).uploadHooks;
        hooks.add(0, new CheckSourceUploadHook());
    }

    public void refreshMenu() throws Exception {
        JMenuBar menu = Main.main.menu;

        if (cadastreJMenu == null) {
            cadastreJMenu = new JMenu(tr("Cadastre"));
            cadastreJMenu.setMnemonic(KeyEvent.VK_C);
            menu.add(cadastreJMenu, menu.getMenuCount()-2);
            
            JosmAction grab = new MenuActionGrab();
            JMenuItem menuGrab = new JMenuItem(grab);
            KeyStroke ks = grab.getShortcut().getKeyStroke();
            if (ks != null) {
                menuGrab.setAccelerator(ks);
            }
            JMenuItem menuSettings = new JMenuItem(new MenuActionNewLocation());
            final JCheckBoxMenuItem menuSource = new JCheckBoxMenuItem(tr("Auto sourcing"));
            menuSource.setSelected(autoSourcing);     
            menuSource.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ev) {
                    Main.pref.put("cadastrewms.autosourcing", menuSource.isSelected());
                    autoSourcing = menuSource.isSelected();
                }
            });

            JMenuItem menuResetCookie = new JMenuItem(new MenuActionResetCookie());
            JMenuItem menuLambertZone = new JMenuItem(new MenuActionLambertZone());
            JMenuItem menuLoadFromCache = new JMenuItem(new MenuActionLoadFromCache());
            JMenuItem menuActionBoundaries = new JMenuItem(new MenuActionBoundaries());
            JMenuItem menuActionBuildings = new JMenuItem(new MenuActionBuildings());
            
            cadastreJMenu.add(menuGrab);
            cadastreJMenu.add(menuSettings);
            cadastreJMenu.add(menuSource);
            cadastreJMenu.add(menuResetCookie);
            cadastreJMenu.add(menuLambertZone);
            cadastreJMenu.add(menuLoadFromCache);
            cadastreJMenu.add(menuActionBoundaries);
            //cadastreJMenu.add(menuActionBuildings);
        }
        setEnabledAll(menuEnabled);
    }

    public static void refreshConfiguration() {
        source = Main.pref.get("cadastrewms.source",
                "cadastre-dgi-fr source : Direction G\u00e9n\u00e9rale des Imp\u00f4ts - Cadastre ; mise \u00e0 jour : AAAA");
        autoSourcing = Main.pref.getBoolean("cadastrewms.autosourcing", true);
        alterColors = Main.pref.getBoolean("cadastrewms.alterColors");
        drawBoundaries = Main.pref.getBoolean("cadastrewms.drawBoundaries", false);
        colorBackground = Main.pref.get("color.background", "#FFFFFF");
        if (alterColors) {
            backgroundTransparent = Main.pref.getBoolean("cadastrewms.backgroundTransparent");
            transparency = Float.parseFloat(Main.pref.get("cadastrewms.brightness", "1.0f"));
        } else {
            backgroundTransparent = false;
            transparency = 1.0f;
        }
    }

    @Override
    public PreferenceSetting getPreferenceSetting() {
        return new CadastrePreferenceSetting();
    }

    private void setEnabledAll(boolean isEnabled) {
        for (int i = 0; i < cadastreJMenu.getItemCount(); i++) {
            JMenuItem item = cadastreJMenu.getItem(i);
            if (item != null)
                if (item.getText().equals(MenuActionGrab.name) ||
                    item.getText().equals(MenuActionBoundaries.name) ||
                    item.getText().equals(MenuActionBuildings.name)) {
                    item.setEnabled(isEnabled);
                } else if (item.getText().equals(MenuActionLambertZone.name)) {
                    item.setEnabled(!isEnabled);
                }
        }
        menuEnabled = isEnabled;
    }

    public void mapFrameInitialized(MapFrame oldFrame, MapFrame newFrame) {
        if (cadastreJMenu != null) {
            if (oldFrame == null && newFrame != null) {
                setEnabledAll(true);
                Main.map.addMapMode(new IconToggleButton
                        (new WMSAdjustAction(Main.map)));
            } else if (oldFrame != null && newFrame == null) {
                setEnabledAll(false);
                Lambert.layoutZone = -1;
            }
        }
    }

}