package net.sourceforge.phpdt.sql;

import java.io.File;
import java.net.URL;
import java.util.ResourceBundle;

import org.eclipse.core.resources.ISaveContext;
import org.eclipse.core.resources.ISaveParticipant;
import org.eclipse.core.resources.ISavedState;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IPluginDescriptor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import net.sourceforge.phpdt.sql.sql.MultiSQLServer;
import net.sourceforge.phpdt.sql.view.bookmark.BookmarkContentProvider;

/**
 * @author 
 */
public class PHPEclipseSQLPlugin extends AbstractUIPlugin implements IConstants {
  
  private static final String BUNDLE_NAME =
    "net.sourceforge.phpdt.sql.PHPEclipseSQLResources";
  private static final ResourceBundle RESOURCE_BUNDLE =
    ResourceBundle.getBundle(BUNDLE_NAME);

  private static PHPEclipseSQLPlugin plugin;
  public final static String PLUGIN_ID = "net.sourceforge.phpeclipse.sql";

  public PHPEclipseSQLPlugin(IPluginDescriptor descriptor) {
    super(descriptor);
    plugin = this;
  }

  public static PHPEclipseSQLPlugin getDefault() {
    return plugin;
  }
  protected void readStateFrom(File target) {
    BookmarkContentProvider.getInstance().load(target);
  }

  public void startup() throws CoreException {
    super.startup();
    ISaveParticipant saveParticipant = new PHPSQLSaveParticipant();
    ISavedState lastState =
      ResourcesPlugin.getWorkspace().addSaveParticipant(this, saveParticipant);
    if (lastState == null)
      return;
    IPath location = lastState.lookup(new Path("save"));
    if (location == null)
      return;
    // the plugin instance should read any important state from the file. 
    File f = getStateLocation().append(location).toFile();
    readStateFrom(f);
  }
  protected void writeImportantState(File target) {
    BookmarkContentProvider.getInstance().save(target);
  }
  public static ImageDescriptor getImageDescriptor(String name) {
    ImageDescriptor descriptor = null;
    try {
      URL installURL =
        PHPEclipseSQLPlugin.getDefault().getDescriptor().getInstallURL();
      URL url = new URL(installURL, "icons/" + name);
      descriptor = ImageDescriptor.createFromURL(url);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return descriptor;
  }
  public static Image getImage(String name) {
    return getImageDescriptor(name).createImage();
  }

  public void dispose() throws CoreException {
    MultiSQLServer.getInstance().shutdown();
  }

  protected void initializeDefaultPluginPreferences() {
    RGB BACKGROUND = new RGB(255, 255, 255);
    RGB COMMENT = new RGB(88, 148, 64);
    RGB IDENTIFIER = new RGB(0, 0, 0);
    RGB KEYWORD = new RGB(126, 0, 75);
    RGB STRING = new RGB(0, 0, 255);
    RGB NUMERIC = new RGB(255, 0, 0);
    RGB DEFAULT = new RGB(0, 0, 0);
    IPreferenceStore store = getPreferenceStore();
    PreferenceConverter.setDefault(
      store,
      "phpeclipse.sql.background.color",
      BACKGROUND);
    PreferenceConverter.setDefault(store, "phpeclipse.sql.text.color", DEFAULT);
    PreferenceConverter.setDefault(store, "phpeclipse.sql.keyword.color", KEYWORD);
    PreferenceConverter.setDefault(store, "phpeclipse.sql.comment.color", COMMENT);
    PreferenceConverter.setDefault(store, "phpeclipse.sql.string.color", STRING);
    PreferenceConverter.setDefault(store, "phpeclipse.sql.numeric.color", NUMERIC);
    getPreferenceStore().setDefault("phpeclipse.sql.text.bold", false);
    getPreferenceStore().setDefault("phpeclipse.sql.keyword.bold", true);
    getPreferenceStore().setDefault("phpeclipse.sql.string.bold", false);
    getPreferenceStore().setDefault("phpeclipse.sql.comment.bold", false);
    getPreferenceStore().setDefault("phpeclipse.sql.numeric.bold", false);
    PreferenceConverter.setDefault(
      getPreferenceStore(),
      "phpeclipse.sql.font",
      (FontData) null);
  }

}
class PHPSQLSaveParticipant implements ISaveParticipant, IConstants {
  /**
   * @see org.eclipse.core.resources.ISaveParticipant#doneSaving(ISaveContext)
   */
  public void doneSaving(ISaveContext context) {
  }

  /**
   * @see org.eclipse.core.resources.ISaveParticipant#prepareToSave(ISaveContext)
   */
  public void prepareToSave(ISaveContext context) throws CoreException {
  }

  /**
   * @see org.eclipse.core.resources.ISaveParticipant#rollback(ISaveContext)
   */
  public void rollback(ISaveContext context) {
  }

  /**
   * @see org.eclipse.core.resources.ISaveParticipant#saving(ISaveContext)
   */
  public void saving(ISaveContext context) throws CoreException {
    switch (context.getKind()) {
      case ISaveContext.FULL_SAVE :
        PHPEclipseSQLPlugin sqlPluginInstance = PHPEclipseSQLPlugin.getDefault();
        // save the plug in state 
        if (BookmarkContentProvider.getInstance().hasChanged()) {
          int saveNumber = context.getSaveNumber();
          String saveFileName = "save " + Integer.toString(saveNumber);
          File f =
            sqlPluginInstance
              .getStateLocation()
              .append(saveFileName)
              .toFile();
          // if we fail to write, an exception is thrown and we do not update the path 
          sqlPluginInstance.writeImportantState(f);
          context.map(new Path("save"), new Path(saveFileName));
          context.needSaveNumber();
        } else {
          if (DEBUG) {
          System.out.println("Not saving unchanged bookmarks");
          }
        }
        break;
      case ISaveContext.PROJECT_SAVE :
        // get the project related to this save operation 
        //IProject project = context.getProject(); 
        // save its information, if necessary 
        break;
      case ISaveContext.SNAPSHOT :
        // This operation needs to be really fast because 
        // snapshots can be requested frequently by the 
        // workspace. 
        break;
    }
  }
}