/*******************************************************************************
 * Copyright (c) 2010 Martin Schnabel <mb0@mb0.org>.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 ******************************************************************************/
package org.axdt.core.ui.preferences;

import java.util.List;

import org.apache.log4j.Logger;
import org.axdt.common.IAxdtExtension;
import org.axdt.common.preferences.AbstractPreferences;
import org.axdt.core.config.ICoreConfig;
import org.axdt.core.config.ISwfConfig;
import org.axdt.core.swf.IAxdtSwfPlayer;
import org.axdt.core.ui.CoreUiActivator;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IPath;

import com.google.common.collect.Lists;

/**
 * @author mb0
 * @author nkuebler
 */
public class CorePreferences extends AbstractPreferences implements
		ICoreConfig, ISwfConfig {

	private static CorePreferences instance;

	public static CorePreferences getInstance() {
		if (instance == null)
			new CorePreferences();
		return instance;
	}

	public CorePreferences() {
		super("Preferences for Axdt projects");
		assert (instance == null);
		instance = this;
	}

	public String getConfigId() {
		return ID;
	}

	public String getQualifier() {
		return CoreUiActivator.PLUGIN_ID;
	}

	public void initializeFieldSpecs() {

		addGroup("Project folders", true);
		add(SOURCE_PATHS, "&Source paths", "src");
		add(OUTPUT_PATH, "&Deploy path", "deploy");
		add(CONFIG_PATH, "&Config path", "config");
		add(LIBRARY_PATHS, "&Library paths", "lib");

		addGroup("When opening Swf files", true, EXCLUDE_IN_PROPERTIES);
		add(OPEN_PLAYER, "&Player choice", getPlayerChoices());
	}

	public String[][] getPlayerChoices() {
		List<String[]> result = Lists.newArrayList();
		for (IConfigurationElement contrib : IAxdtExtension.Helper
				.getContributions(IAxdtSwfPlayer.EXTENSION_ID)) {
			result.add(new String[] {
					contrib.getAttribute(IAxdtSwfPlayer.NAME_ATTRIBUTE),
					contrib.getAttribute(IAxdtSwfPlayer.ID_ATTRIBUTE) });
		}
		return result.toArray(new String[result.size()][]);
	}

	public IAxdtSwfPlayer getPlayer(String id) {
		try {
			return IAxdtExtension.Helper.executeContribution(
					IAxdtSwfPlayer.EXTENSION_ID, id, IAxdtSwfPlayer.class);
		} catch (CoreException e) {
			Logger.getLogger(getClass()).error(
					"error creating swf player contribution" + id, e);
			return null;
		}
	}

	public List<IPath> getSourcePaths(IResource res) {
		IPath projectPath = checkProject(res).getFullPath();
		return getRelativePaths(projectPath, res, SOURCE_PATHS);
	}

	public List<IPath> getSourceLocations(IResource res) {
		IPath projectLocation = checkProject(res).getLocation();
		return getRelativePaths(projectLocation, res, SOURCE_PATHS);
	}
	public List<IPath> getLibraryPaths(IResource res) {
		IPath projectLocation = checkProject(res).getFullPath();
		return getRelativePaths(projectLocation, res, LIBRARY_PATHS);
	}
	public List<IPath> getLibraryLocations(IResource res) {
		IPath projectLocation = checkProject(res).getLocation();
		return getRelativePaths(projectLocation, res, LIBRARY_PATHS);
	}

	public IContainer getOutputResource(IResource res) {
		IProject project = checkProject(res);
		return getRelativeResource(project, res, OUTPUT_PATH);
	}

	public IContainer getConfigResource(IResource res) {
		IProject project = checkProject(res);
		return getRelativeResource(project, res, CONFIG_PATH);
	}

	private IContainer getRelativeResource(IProject project, IResource context,
			String configName) {
		String path = getProjectStore(context).getString(configName);
		return project.getFolder(path);
	}

	private List<IPath> getRelativePaths(IPath base, IResource context,
			String configName) {
		List<IPath> result = Lists.newArrayList();
		for (String path : getStringList(context, configName))
			result.add(base.append(path));
		return result;
	}

	public String[] getStringList(IResource context, String configName) {
		return getProjectStore(context).getString(configName).split("[,; ]");
	}

	protected IProject checkProject(IResource res) {
		if (res == null)
			throw new IllegalArgumentException("resource must be specified");
		IProject project = res.getProject();
		if (project == null)
			throw new IllegalArgumentException("project must be specified");
		return project;
	}
}