/* 
 *  Copyright 2008-2009 the EasyAnt project
 * 
 *  See the NOTICE file distributed with this work for additional information
 *  regarding copyright ownership. 
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software 
 *  distributed under the License is distributed on an "AS IS" BASIS, 
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and 
 *  limitations under the License.
 */
package org.apache.easyant4e.services;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.easyant.core.EasyAntConfiguration;
import org.apache.easyant.core.EasyAntEngine;
import org.apache.easyant.core.descriptor.PropertyDescriptor;
import org.apache.easyant.core.factory.EasyantConfigurationFactory;
import org.apache.easyant.core.report.EasyAntReport;
import org.apache.easyant4e.Activator;
import org.apache.easyant4e.ivyde.extension.RepositoryInstaller;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IStatus;

import static org.apache.easyant4e.EasyAntConstants.EASYANT_BUILD_TYPES_ORG;
import static org.apache.easyant4e.EasyAntConstants.EASYANT_BUILD_PLUGINS_ORG;
import static org.apache.easyant4e.EasyAntConstants.PLUGINS_SETTINGS;

import com.google.inject.Inject;

/**
 * 
 * @author <a href="mailto:jerome@benois.fr">Jerome Benois</a>
 */
public class EasyantCoreServiceImpl implements EasyantCoreService {

	//TODO a déplacer dans pluginService
	//TODO et ne pas recharger les settings à chaque fois ... faire un push du contexte
	//TODO read workspace preference and project preference to Get the good Ivy instance for the EasyAnt Core
	//IvySettings ivySettings = createIvySettingsForEACore(project);
	//Ivy ivy = Ivy.newInstance(ivySettings);
	//ivySettings.addRepositoryCacheManager(getRepositoryCacheManager());
	//ivySettings.setBaseDir(getBaseDir(project));
	
/*
	public Ivy getIvyInstance() {	
		URL url = Activator.getDefault().getBundle().getResource(PLUGINS_SETTINGS);		
		Ivy ivy = IvyContext.getContext().getIvy();
		try{
			ivy.configure(url);
		} catch (ParseException e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot parse EasyAnt Ivy settings file: " + url, e);
		} catch (IOException e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot read EasyAnt Ivy settings file: " + url, e);
		}
		IvySettings ivySettings = ivy.getSettings();
		IvyContext ivyContext = IvyContext.pushNewContext();
		ivyContext.setIvy(ivy);
		return ivy;
	}
	*/
	
/*
	private IvySettings createIvySettingsForEACore(IProject project) {
		// Ivy ivy = IvyContext.pushNewCopyContext().getIvy();
		// IvySettings ivySettings = ivy.getSettings();
		IvySettings ivySettings = new IvySettings();

		URL url = Activator.getDefault().getBundle().getResource(PLUGINS_SETTINGS);
		try {
			ivySettings.load(url);
		} catch (ParseException e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot parse EasyAnt Ivy settings file: " + url, e);
		} catch (IOException e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot read EasyAnt Ivy settings file: " + url, e);
		}
		//ivySettings.addRepositoryCacheManager(getRepositoryCacheManager());
		ivySettings.setBaseDir(getBaseDir(project));
		
		return ivySettings;
	}
*/

	public static final String CACHE_FILE = "easyant4e-cache-manager";
	public static final String CACHE_NAME = "__easyant4e-cache-manager";

/*	
	// FIXME connect this on project instance
	private static RepositoryCacheManager getRepositoryCacheManager() {
		DefaultRepositoryCacheManager cacheManager = new DefaultRepositoryCacheManager();
		BundleContext bundleContext = IvyPlugin.getDefault().getBundleContext();
		cacheManager.setBasedir(bundleContext.getDataFile(CACHE_FILE));
		cacheManager.setCheckmodified(true);
		cacheManager.setUseOrigin(true);
		cacheManager.setName(WorkspaceResolver.CACHE_NAME);
		return cacheManager;
	}
*/
	private EasyAntEngine easyAntEngine;
	
	@Inject
	public void setEasyAntEngine(EasyAntEngine easyAntEngine){
		this.easyAntEngine = easyAntEngine;
	}
	
	//private static File getBaseDir(IProject project) {
	//	return project.getLocation().toFile();
	//}

	public String getPluginsRepositoryPath() {
		return pluginsRepository.getPath();
	}

	private File pluginsRepository;

	public void installPluginsRepository() {
		String userHome = System.getProperty("user.home");
		File easyAntHome = new File(userHome, ".easyant");
		if (!easyAntHome.exists()) {
			boolean created = easyAntHome.mkdir();
			if (!created) {
				Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot create directory: " + easyAntHome);
			}
		}
		this.pluginsRepository = new File(easyAntHome, "easyant-repository");
		installLocalRepository();
	}

	private void installLocalRepository() {
		if (!pluginsRepository.exists()) {
			boolean created = pluginsRepository.mkdir();
			if (!created) {
				Activator.getEasyAntPlugin().log(IStatus.ERROR, "Cannot create directory: " + pluginsRepository);
			} else {
				// populate the repository from the plugin
				// TODO read preference to override default ivysettings.xml use
				// to
				// resolve build plugins
				RepositoryInstaller repositoryInstaller = new RepositoryInstaller();
				repositoryInstaller.install(pluginsRepository);
			}
		}
		// HashMap<String, String> variables = new HashMap<String, String>();
		// variables.put("easyant.repo.dir", pluginsRepository.getPath());
		// ivySettings.addAllVariables(variables);
	}

	public String[] getAllCoreBuildTypes() {
		try {
			//getIvyInstance(null);
			return easyAntEngine.getPluginService().searchModule(EASYANT_BUILD_TYPES_ORG, "*");
		} catch (Exception e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, e.getMessage(), e);
		}
		return null;
	}

	public String[] getAllCorePlugins() {
		try {
			//getIvyInstance(null);
			return easyAntEngine.getPluginService().searchModule(EASYANT_BUILD_PLUGINS_ORG, "*");
		} catch (Exception e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, e.getMessage(), e);
		}
		return null;
	}
	
	public List<PropertyDescriptor> getPropertiesForBuildType(String buildTypeName){
		//getIvyInstance(null);
		ArrayList<PropertyDescriptor> propertyDescriptors = new ArrayList<PropertyDescriptor>();
		EasyAntReport eaReport = null;
		try {
			eaReport = easyAntEngine.getPluginService().getBuildTypeInfo(buildTypeName);
		} catch (Exception e) {
			Activator.getEasyAntPlugin().log(IStatus.ERROR, e.getMessage(), e);
		}
		if (eaReport != null) {
			Map<String, PropertyDescriptor> properties = eaReport.getAvailableProperties();
			for (Entry<String, PropertyDescriptor> entry : properties.entrySet()) {
				PropertyDescriptor prop = entry.getValue();
				propertyDescriptors.add(prop);
			}
		}
		return propertyDescriptors;
	}

	public String getBuildTypeDescription(String buildTypeName) {
		return easyAntEngine.getPluginService().getBuildTypeDescription(buildTypeName);
	}

	public String getPluginDescription(String pluginName) {
		return easyAntEngine.getPluginService().getPluginDescription(pluginName);
	}
}