package net.sourceforge.phpeclipse.wiki.editor;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.MessageFormat;
import java.util.Hashtable;
import java.util.List;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

import net.sourceforge.phpeclipse.wiki.internal.IConfigurationWorkingCopy;
import net.sourceforge.phpeclipse.wiki.internal.ConfigurationManager;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IPluginDescriptor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.text.templates.ContextTypeRegistry;
import org.eclipse.jface.text.templates.persistence.TemplateStore;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.editors.text.templates.ContributionContextTypeRegistry;
import org.eclipse.ui.editors.text.templates.ContributionTemplateStore;
import org.eclipse.ui.plugin.AbstractUIPlugin;

public class WikiEditorPlugin extends AbstractUIPlugin {

  private static WikiEditorPlugin fgPlugin;
  public static final String HTTP_QUERY = "HTTP Query";
  public static final String WIKIPEDIA_GET_TEXT = "Wikipedia-Load Text";
  public static final String WEBLOG_API_SEND = "MetaWeblog API-Post";
  
  public static final String[] CONFIGURATION_TYPES = {
      HTTP_QUERY,
      WIKIPEDIA_GET_TEXT, 
      WEBLOG_API_SEND
  };
  //image paths
  public static final String ICON_PATH = "icons/full/"; //$NON-NLS-1$

  public final static String PLUGIN_ID = "net.sourceforge.phpeclipse.wiki";

  public final static String HTML_OUTPUT_PATH = "__static_wiki_folder";

  public final static String WIKI_TEXTS_BASE_PATH = "__wiki_texts_base_path";
  public final static String  PREF_STRING_CONFIGURATIONS ="configurations";
  public final static String CONFIG_MEMENTO = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
  		"<configurations>"+
"<config name=\"Google Search\" type-id=\"HTTP Query\" url=\"http://www.google.com/search?q=$text.selection\"/>" +
"<config name=\"Koders.com Search\" type-id=\"HTTP Query\" url=\"http://koders.com/?s=$text.selection\"/>" +
"<config name=\"Leo.org Translation\" type-id=\"HTTP Query\" url=\"http://dict.leo.org/?search=$text.selection\"/>" +
"<config name=\"Wikipedia-en\" type-id=\"Wikipedia-Load Text\" url=\"http://en.wikipedia.org/w/wiki.phtml?title=$text.wikiname&amp;action=edit\"/>" +
"<config name=\"Wikibooks-en\" type-id=\"Wikipedia-Load Text\" url=\"http://en.wikibooks.org/w/wiki.phtml?title=$text.wikiname&amp;action=edit\"/>" +
"</configurations>";
  private static ConfigurationManager manager;
//
//  public static final String IMG_MONITOR_ON = "monitorOn";
//
//  public static final String IMG_MONITOR_OFF = "monitorOff";

  /**
   * Creates an image and places it in the image registry.
   * 
   * @param id
   *          the identifier for the image
   * @param baseURL
   *          the base URL for the image
   */
  protected static void createImageDescriptor(WikiEditorPlugin plugin, String id, URL baseURL) {
    // Delegate to the plugin instance to avoid concurrent class loading problems
    plugin.privateCreateImageDescriptor(id, baseURL);
  }

  public static WikiEditorPlugin getDefault() {
    return fgPlugin;
  }

  /**
   * Returns the image descriptor for the given image ID. Returns null if there is no such image.
   * 
   * @param id
   *          the identifier for the image to retrieve
   * @return the image associated with the given ID
   */
  public static ImageDescriptor getImageDescriptor(String id) {
    // Delegate to the plugin instance to avoid concurrent class loading problems
    return getDefault().privateGetImageDescriptor(id);
  }

  /**
   * Convenience method to get an image descriptor for an extension
   * 
   * @param extension
   *          the extension declaring the image
   * @param subdirectoryAndFilename
   *          the path to the image
   * @return the image
   */
  public static ImageDescriptor getImageDescriptorFromExtension(IExtension extension, String subdirectoryAndFilename) {
    IPluginDescriptor pluginDescriptor = extension.getDeclaringPluginDescriptor();
    URL path = pluginDescriptor.getInstallURL();
    URL fullPathString = null;
    try {
      fullPathString = new URL(path, subdirectoryAndFilename);
      return ImageDescriptor.createFromURL(fullPathString);
    } catch (MalformedURLException e) {
    }
    return null;
  }

  public static String getResourceString(String key) {
    ResourceBundle bundle = WikiEditorPlugin.getDefault().getResourceBundle();
    try {
      return (bundle != null) ? bundle.getString(key) : key;
    } catch (MissingResourceException e) {
      return key;
    }
  }

  /**
   * Returns the standard display to be used. The method first checks, if the thread calling this method has an associated display.
   * If so, this display is returned. Otherwise the method returns the default display.
   */
  public static Display getStandardDisplay() {
    Display display = Display.getCurrent();
    if (display == null) {
      display = Display.getDefault();
    }
    return display;
  }

  private ContributionContextTypeRegistry fContextTypeRegistry;

  private ResourceBundle fResourceBundle;

  private ContributionTemplateStore fTemplateStore;

  private Hashtable imageDescriptors = new Hashtable(20);

  public WikiEditorPlugin(IPluginDescriptor descriptor) {
    super(descriptor);
    initializeImages();
    fgPlugin = this;
    manager = ConfigurationManager.getInstance();
    try {
      fResourceBundle = ResourceBundle.getBundle("net.sourceforge.phpeclipse.wiki.editor.WikiEditorMessages");
    } catch (MissingResourceException x) {
      fResourceBundle = null;
    }
  }

  /**
   * Creates an image and places it in the image registry.
   */
  protected void createImageDescriptor(String id, URL baseURL) {
    URL url = null;
    try {
      url = new URL(baseURL, ICON_PATH + id);
    } catch (MalformedURLException e) {
    }
    ImageDescriptor desc = ImageDescriptor.createFromURL(url);
    imageDescriptors.put(id, desc);
  }

  public IWorkbenchPage getActivePage() {
    IWorkbenchWindow window = getWorkbench().getActiveWorkbenchWindow();
    if (window != null)
      return window.getActivePage();
    return null;
  }

  public ContextTypeRegistry getContextTypeRegistry() {
    if (fContextTypeRegistry == null) {
      fContextTypeRegistry = new ContributionContextTypeRegistry();
      fContextTypeRegistry.addContextType("net.sourceforge.phpeclipse.wiki.editor.templates");
    }
    return fContextTypeRegistry;
  }

  public Image getImage(String key) {
    Image image = getImageRegistry().get(key);
    if (image == null) {
      ImageDescriptor d = getImageDescriptor(key);
      image = d.createImage();
      getImageRegistry().put(key, image);
    }
    return image;
  }

  public ResourceBundle getResourceBundle() {
    return fResourceBundle;
  }

  public TemplateStore getTemplateStore() {
    if (fTemplateStore == null) {
      fTemplateStore = new ContributionTemplateStore(getContextTypeRegistry(), getDefault().getPreferenceStore(), "templates");
      try {
        fTemplateStore.load();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }

    return fTemplateStore;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.eclipse.ui.plugin.AbstractUIPlugin#initializeDefaultPreferences(org.eclipse.jface.preference.IPreferenceStore)
   */
  protected void initializeDefaultPreferences(IPreferenceStore store) {
    store.setDefault(PREF_STRING_CONFIGURATIONS, CONFIG_MEMENTO);
  }

  /*
   * Initializes the table of images used in this plugin. The plugin is provided because this method is called before the plugin
   * staic variable has been set. See the comment on the getPlugin() method for a description of why this is required.
   */
  private void initializeImages() {
    URL baseURL = getDescriptor().getInstallURL();

    //  special
    createImageDescriptor("glyphs/glyph1.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph2.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph3.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph4.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph5.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph6.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph7.gif", baseURL); //$NON-NLS-1$
    createImageDescriptor("glyphs/glyph8.gif", baseURL); //$NON-NLS-1$

  }

  public void log(String message) {
    getDefault().getLog().log(new Status(IStatus.OK, PLUGIN_ID, IStatus.OK, message, null));
  }

  public void log(String message, Exception e) {
    getDefault().getLog().log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, "Caught exception", e));
  }

  public void logAndReport(String title, String message, Exception e) {
    log(message, e);
    reportError(title, message);
  }

  private void privateCreateImageDescriptor(String id, URL baseURL) {
    URL url = null;
    try {
      url = new URL(baseURL, ICON_PATH + id);
    } catch (MalformedURLException e) {
    }
    ImageDescriptor desc = ImageDescriptor.createFromURL(url);
    imageDescriptors.put(id, desc);
  }

  private ImageDescriptor privateGetImageDescriptor(String id) {
    if (!imageDescriptors.containsKey(id)) {
      URL baseURL = WikiEditorPlugin.getDefault().getDescriptor().getInstallURL();
      createImageDescriptor(getDefault(), id, baseURL);
    }
    return (ImageDescriptor) imageDescriptors.get(id);
  }

  public void reportError(String title, String message) {
    try {
      Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
      MessageDialog.openError(shell, title, message);
    } catch (RuntimeException e) {
      log(e.getLocalizedMessage(), e);
    }
  }

  public void startup() throws CoreException {
    super.startup();
  }

  /**
   * Returns the translated String found with the given key.
   * 
   * @return java.lang.String
   * @param key
   *          java.lang.String
   */
  public static String getResource(String key) {
    try {
      return Platform.getResourceString(getDefault().getBundle(), key);
    } catch (Exception e) {
      return key;
    }
  }

  /**
   * Returns the translated String found with the given key, and formatted with the given object.
   * 
   * @param key
   *          java.lang.String
   * @param obj
   *          java.lang.Object[]
   * @return java.lang.String
   */
  public static String getResource(String key, Object[] obj) {
    try {
      return MessageFormat.format(getResource(key), obj);
    } catch (Exception e) {
      return key;
    }
  }

  /**
   * Returns the translated String found with the given key, and formatted with the given object.
   * 
   * @param key
   *          java.lang.String
   * @param s
   *          java.lang.String
   * @return java.lang.String
   */
  public static String getResource(String key, String s) {
    try {
      return MessageFormat.format(getResource(key), new String[] { s });
    } catch (Exception e) {
      return key;
    }
  }

  /**
   * Return a list of all the existing configurations.
   * 
   * @return java.util.List
   */
  public static List getConfigurations() {
    return manager.getConfigurations();
  }

  /**
   * Create a new monitor.
   * 
   * @return working copy
   */
  public static IConfigurationWorkingCopy createConfiguration() {
    return manager.createConfiguration();
  }
  
  public static String[] getTypes() {
    return CONFIGURATION_TYPES;
  }
}