/*
    * 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:
    * markiewb - initial API and implementation and/or initial documentation
    * bahlef
   */
  package de.funfried.netbeans.plugins.external.formatter.xml.revelc;
  
  import java.util.prefs.Preferences;
  
  import javax.swing.text.Document;
  import javax.swing.text.StyledDocument;
  
  import org.netbeans.api.annotations.common.CheckForNull;
  import org.netbeans.api.annotations.common.NonNull;
  import org.netbeans.api.project.Project;
  import org.openide.util.NbBundle;
  import org.openide.util.lookup.ServiceProvider;
  
  import de.funfried.netbeans.plugins.external.formatter.FormatJob;
  import de.funfried.netbeans.plugins.external.formatter.FormatterService;
  import de.funfried.netbeans.plugins.external.formatter.ui.options.FormatterOptionsPanel;
  import de.funfried.netbeans.plugins.external.formatter.ui.options.Settings;
  import de.funfried.netbeans.plugins.external.formatter.xml.base.AbstractXmlFormatterService;
  import de.funfried.netbeans.plugins.external.formatter.xml.revelc.ui.RevelcXmlFormatterOptionsPanel;
  
  /**
   * revelc.net XML implementation of the {@link AbstractXmlFormatterService}.
   *
   * @author bahlef
   */
  @NbBundle.Messages({
  		"FormatterName=revelc.net XML Code Formatter"
  })
  @ServiceProvider(service = FormatterService.class, position = 500)
  public class RevelcXmlFormatterService extends AbstractXmlFormatterService {
  	/** The ID of this formatter service. */
  	public static final String ID = "revelc-xml-formatter";
  
  	/** * The {@link RevelcXmlFormatterWrapper} implementation. */
  	private final RevelcXmlFormatterWrapper formatter = new RevelcXmlFormatterWrapper();
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@NonNull
  	@Override
  	public String getDisplayName() {
  		return NbBundle.getMessage(RevelcXmlFormatterService.class, "FormatterName");
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@NonNull
  	@Override
  	public String getId() {
  		return ID;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public FormatterOptionsPanel createOptionsPanel(Project project) {
  		return new RevelcXmlFormatterOptionsPanel(project);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@CheckForNull
  	@Override
  	public Integer getContinuationIndentSize(Document document) {
  		if (document == null) {
  			return null;
  		}
  
  		Integer ret = null;
  
  		Preferences preferences = Settings.getActivePreferences(document);
  		if (isUseFormatterIndentationSettings(preferences)) {
  			if (preferences.getBoolean(RevelcXmlFormatterSettings.TAB_INSTEAD_OF_SPACES, true)) {
  				ret = 1;
  			} else {
  				ret = preferences.getInt(RevelcXmlFormatterSettings.TAB_WIDTH, 4);
  			}
  
  			Integer indentSize = getIndentSize(document);
  			if (indentSize != null) {
  				ret *= indentSize;
  			}
  		}
  
  		return ret;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@CheckForNull
 	@Override
 	public Integer getIndentSize(Document document) {
 		if (document == null) {
 			return null;
 		}
 
 		Integer ret = null;
 
 		Preferences preferences = Settings.getActivePreferences(document);
 		if (isUseFormatterIndentationSettings(preferences)) {
 			if (preferences.getBoolean(RevelcXmlFormatterSettings.TAB_INSTEAD_OF_SPACES, true)) {
 				ret = 1;
 			} else {
 				ret = preferences.getInt(RevelcXmlFormatterSettings.TAB_WIDTH, 4);
 			}
 		}
 
 		return ret;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@CheckForNull
 	@Override
 	public Integer getRightMargin(Document document) {
 		if (document == null) {
 			return null;
 		}
 
 		Preferences preferences = Settings.getActivePreferences(document);
 		return preferences.getInt(RevelcXmlFormatterSettings.MAX_LINE_LENGTH, 120);
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
 	protected FormatJob getFormatJob(StyledDocument document) {
 		return new RevelcFormatJob(document, formatter);
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@CheckForNull
 	@Override
 	public Integer getSpacesPerTab(Document document) {
 		if (document == null) {
 			return null;
 		}
 
 		Integer ret = null;
 
 		Preferences preferences = Settings.getActivePreferences(document);
 		if (isUseFormatterIndentationSettings(preferences)) {
 			if (!isExpandTabToSpaces(document, preferences) && preferences.getBoolean(Settings.OVERRIDE_TAB_SIZE, true)) {
 				ret = preferences.getInt(Settings.OVERRIDE_TAB_SIZE_VALUE, 4);
 			} else {
 				ret = preferences.getInt(RevelcXmlFormatterSettings.TAB_WIDTH, 4);
 			}
 		}
 
 		return ret;
 	}
 
 	/**
 	 * {@inheritDoc}
 	 */
 	@CheckForNull
 	@Override
 	public Boolean isExpandTabToSpaces(Document document) {
 		if (document == null) {
 			return null;
 		}
 
 		return isExpandTabToSpaces(document, Settings.getActivePreferences(document));
 	}
 
 	private Boolean isExpandTabToSpaces(Document document, Preferences preferences) {
 		if (document == null || preferences == null) {
 			return null;
 		}
 
 		Boolean ret = null;
 
 		if (isUseFormatterIndentationSettings(preferences)) {
 			ret = !preferences.getBoolean(RevelcXmlFormatterSettings.TAB_INSTEAD_OF_SPACES, true);
 		}
 
 		return ret;
 	}
 
 	/**
 	 * Returns {@code true} if using the formatter indentation settings from the external
 	 * formatter is activated, otherwise {@code false}.
 	 *
 	 * @param prefs the {@link Preferences} where to check
 	 *
 	 * @return {@code true} if using the formatter indentation settings from the external
 	 *         formatter is activated, otherwise {@code false}
 	 */
 	private boolean isUseFormatterIndentationSettings(Preferences prefs) {
 		return prefs.getBoolean(Settings.ENABLE_USE_OF_INDENTATION_SETTINGS, true);
 	}
 }