/*
    * Copyright (c) 2021 Andreas Reichel <a href="mailto:andreas@manticore-projects.com">andreas@manticore-projects.com</a>
    * 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.sql.jsqlformatter;
  
  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.manticore.jsqlformatter.JSQLFormatter;
  import com.manticore.jsqlformatter.JSQLFormatter.FormattingOption;
  
  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;
  
  /**
   * JSQLFormatter implementation of the {@link AbstractFormatJob} to
   * format a given document using the {@link JSQLFormatterWrapper}.
   *
   * @author Andreas Reichel <a href="mailto:andreas@manticore-projects.com">andreas@manticore-projects.com</a>
   */
  class JSQLFormatterJob extends AbstractFormatJob {
  	/** The {@link JSQLFormatter} implementation. */
  	private final JSQLFormatterWrapper formatter;
  
  	/**
  	 * Package private constructor to create a new instance of {@link JSQLFormatterJob}.
  	 *
  	 * @param document the {@link StyledDocument} which sould be formatted
  	 * @param formatter the {@link JSQLFormatterWrapper} to use
  	 * @param changedElements the ranges which should be formatted
  	 */
  	JSQLFormatterJob(StyledDocument document, JSQLFormatterWrapper 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 code = getCode();
  
  		try {
  			//@todo: hand over the formatting options
  			//@todo: obey the selected region
  			String formattedContent = formatter.format(code, getOptions(pref));
  
  			if (setFormattedCode(code, formattedContent)) {
  				SwingUtilities.invokeLater(() -> {
  					if (pref.getBoolean(Settings.SHOW_NOTIFICATIONS, false)) {
  						NotificationDisplayer.getDefault().notify("Format using JSQLFormatter", Icons.ICON_MANTICORE, "", null);
  					}
  					StatusDisplayer.getDefault().setStatusText("Format using JSQLFormatter");
  				});
  			}
  		} catch (FormattingFailedException ex) {
  			SwingUtilities.invokeLater(() -> {
  				StatusDisplayer.getDefault().setStatusText("Failed to format using JSQLFormatter formatter: " + ex.getMessage());
  			});
  
  			throw ex;
  		}
  	}
  
  	private String[] getOptions(Preferences pref) {
  		int i = 0;
  		String[] options = new String[FormattingOption.values().length];
  		options[i++] = toOption(pref, FormattingOption.OUTPUT_FORMAT, JSQLFormatter.getOutputFormat());
  		options[i++] = toOption(pref, FormattingOption.KEYWORD_SPELLING, JSQLFormatter.getKeywordSpelling());
  		options[i++] = toOption(pref, FormattingOption.FUNCTION_SPELLING, JSQLFormatter.getFunctionSpelling());
  		options[i++] = toOption(pref, FormattingOption.OBJECT_SPELLING, JSQLFormatter.getObjectSpelling());
  		options[i++] = toOption(pref, FormattingOption.INDENT_WIDTH, JSQLFormatter.getIndentWidth());
  		options[i++] = toOption(pref, FormattingOption.SEPARATION, JSQLFormatter.getSeparation());
  		options[i++] = toOption(pref, FormattingOption.SQUARE_BRACKET_QUOTATION, JSQLFormatter.getSquaredBracketQuotation());
  
  		return options;
  	}
  
  	private <E extends Enum<E>> String toOption(Preferences pref, JSQLFormatter.FormattingOption option, E defaultValue) {
 		return toOption(pref, option, String.valueOf(defaultValue));
 	}
 
 	private String toOption(Preferences pref, JSQLFormatter.FormattingOption option, String defaultValue) {
 		return option.toString() + "=" + pref.get(option.toString(), defaultValue);
 	}
 
 	private String toOption(Preferences pref, JSQLFormatter.FormattingOption option, int defaultValue) {
 		return String.valueOf(option) + "=" + pref.getInt(String.valueOf(option), defaultValue);
 	}
 }