/*
    * Copyright (c) 2020 bahlef.
    * All rights reserved. This program and the accompanying materials
    * are made available under the terms of the Eclipse Public License v2.0
    * which accompanies this distribution, and is available at
    * http://www.eclipse.org/legal/epl-v20.html
    * Contributors:
    * bahlef - initial API and implementation and/or initial documentation
    */
  package de.funfried.netbeans.plugins.external.formatter.java.google;
  
  import java.util.SortedSet;
  import java.util.prefs.Preferences;
  
  import javax.swing.SwingUtilities;
  import javax.swing.text.BadLocationException;
  import javax.swing.text.StyledDocument;
  
  import org.apache.commons.lang3.tuple.Pair;
  import org.openide.awt.NotificationDisplayer;
  import org.openide.awt.StatusDisplayer;
  
  import com.google.googlejavaformat.java.JavaFormatterOptions;
  
  import de.funfried.netbeans.plugins.external.formatter.AbstractFormatJob;
  import de.funfried.netbeans.plugins.external.formatter.exceptions.FormattingFailedException;
  import de.funfried.netbeans.plugins.external.formatter.ui.Icons;
  import de.funfried.netbeans.plugins.external.formatter.ui.options.Settings;
  
  /**
   * Google formatter implementation of the {@link AbstractFormatJob} to
   * format a given document using the {@link GoogleJavaFormatterWrapper}.
   *
   * @author bahlef
   */
  class GoogleFormatJob extends AbstractFormatJob {
  	/** The {@link GoogleJavaFormatterWrapper} implementation. */
  	private final GoogleJavaFormatterWrapper formatter;
  
  	/**
  	 * Package private constructor to create a new instance of {@link GoogleFormatJob}.
  	 *
  	 * @param document the {@link StyledDocument} which sould be formatted
  	 * @param formatter the {@link GoogleJavaFormatterWrapper} to use
  	 * @param changedElements the ranges which should be formatted
  	 */
  	GoogleFormatJob(StyledDocument document, GoogleJavaFormatterWrapper formatter, SortedSet<Pair<Integer, Integer>> changedElements) {
  		super(document, changedElements);
  
  		this.formatter = formatter;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public void format() throws BadLocationException {
  		Preferences pref = Settings.getActivePreferences(document);
  
  		String codeStylePref = pref.get(GoogleJavaFormatterSettings.CODE_STYLE, JavaFormatterOptions.Style.GOOGLE.name());
  
  		String code = getCode();
  
  		SortedSet<Pair<Integer, Integer>> regions = getFormatableSections(code);
  
  		try {
  			JavaFormatterOptions.Style codeStyle = JavaFormatterOptions.Style.valueOf(codeStylePref);
  			String formattedContent = formatter.format(code, codeStyle, regions);
  
  			if (setFormattedCode(code, formattedContent)) {
  				SwingUtilities.invokeLater(() -> {
  					if (pref.getBoolean(Settings.SHOW_NOTIFICATIONS, false)) {
  						NotificationDisplayer.getDefault().notify("Format using Google formatter", Icons.ICON_GOOGLE, "", null);
  					}
  
  					StatusDisplayer.getDefault().setStatusText("Format using Google formatter");
  				});
  			}
  		} catch (FormattingFailedException ex) {
  			SwingUtilities.invokeLater(() -> {
  				StatusDisplayer.getDefault().setStatusText("Failed to format using Google formatter: " + ex.getMessage());
  			});
  
  			throw ex;
  		}
  	}
  
  	public void organizeImports() throws BadLocationException {
  		Preferences pref = Settings.getActivePreferences(document);
  
  		String codeStylePref = pref.get(GoogleJavaFormatterSettings.CODE_STYLE, JavaFormatterOptions.Style.GOOGLE.name());
  
  		String code = getCode();
  
  		try {
  			JavaFormatterOptions.Style codeStyle = JavaFormatterOptions.Style.valueOf(codeStylePref);
  			String formattedContent = formatter.organizeImports(code, codeStyle);
  
  			if (setFormattedCode(code, formattedContent)) {
 				SwingUtilities.invokeLater(() -> {
 					if (pref.getBoolean(Settings.SHOW_NOTIFICATIONS, false)) {
 						NotificationDisplayer.getDefault().notify("Organizing imports using Google formatter", Icons.ICON_GOOGLE, "", null);
 					}
 
 					StatusDisplayer.getDefault().setStatusText("Organizing imports using Google formatter");
 				});
 			}
 		} catch (FormattingFailedException ex) {
 			SwingUtilities.invokeLater(() -> {
 				StatusDisplayer.getDefault().setStatusText("Failed to organize imports using Google formatter: " + ex.getMessage());
 			});
 
 			throw ex;
 		}
 	}
 }