/**

 * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

 */

package org.symbian.tools.tmw.internal.ui.project;

import java.util.Map;

import java.util.TreeMap;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IConfigurationElement;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.core.runtime.SubProgressMonitor;

import org.eclipse.jface.operation.IRunnableWithProgress;

import org.eclipse.jface.resource.ImageDescriptor;

import org.eclipse.swt.graphics.Image;

import org.eclipse.wst.common.project.facet.core.IProjectFacet;

import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;

import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager;

import org.symbian.tools.tmw.core.TMWCore;

import org.symbian.tools.tmw.core.runtimes.IMobileWebRuntime;

import org.symbian.tools.tmw.ui.TMWCoreUI;

import org.symbian.tools.tmw.ui.project.IProjectTemplate;

import org.symbian.tools.tmw.ui.project.IProjectTemplateContext;

import org.symbian.tools.tmw.ui.project.ITemplateInstaller;

public class ProjectTemplateImpl implements IProjectTemplate {

    private final IConfigurationElement element;

    private Image image;

    private IMobileWebRuntime[] runtimes;

    private IProjectFacetVersion[] facetVersions;

    private ITemplateInstaller installer;

    private Map<String, String> parameters;

    public ProjectTemplateImpl(IConfigurationElement element) {

        this.element = element;

    }

    public int getWeight() {

        final String weight = element.getAttribute("weight");

        try {

            return Integer.valueOf(weight).intValue();

        } catch (NumberFormatException e) {

            TMWCoreUI.log("Invalid weight: %s in project template %s", weight, getName());

            return Integer.MAX_VALUE;

        }

    }

    public Image getIcon() {

        if (image == null) {

            final ImageDescriptor imageDescriptor = TMWCoreUI.imageDescriptorFromPlugin(element.getContributor()

                    .getName(), element.getAttribute("icon"));

            final String key = "Template#" + getName();

            TMWCoreUI.getDefault().getImageRegistry().put(key, imageDescriptor);

            image = TMWCoreUI.getDefault().getImageRegistry().get(key);

        }

        return image;

    }

    public String getName() {

        return element.getAttribute("name");

    }

    public String getDescription() {

        IConfigurationElement[] children = element.getChildren("description");

        if (children.length > 0) {

            return children[0].getValue();

        }

        return "";

    }

    public IMobileWebRuntime[] getSupportedRuntimes() {

        if (runtimes == null) {

            final IConfigurationElement[] children = element.getChildren("supported-runtime");

            runtimes = new IMobileWebRuntime[children.length];

            for (int i = 0; i < children.length; i++) {

                final IConfigurationElement element = children[i];

                final String id = element.getAttribute("id");

                final String version = element.getAttribute("version");

                runtimes[i] = TMWCore.getRuntimesManager().getRuntime(id, version);

                if (runtimes[i] == null) {

                    TMWCoreUI.log("Runtime %s@%s was not found. It is needed for project template %s.", id, version,

                            getName());

                }

            }

        }

        return runtimes;

    }

    public IProjectFacetVersion[] getRequiredFacets() {

        if (facetVersions == null) {

            final IConfigurationElement[] children = element.getChildren("required-facet");

            facetVersions = new IProjectFacetVersion[children.length];

            for (int i = 0; i < children.length; i++) {

                final IConfigurationElement element = children[i];

                final IProjectFacet projectFacet = ProjectFacetsManager.getProjectFacet(element.getAttribute("id"));

                if (projectFacet != null) {

                    facetVersions[i] = projectFacet.getVersion(element.getAttribute("version"));

                }

                if (facetVersions[i] == null) {

                    TMWCoreUI.log("Facet %s@%s was not found. It is required by project template %s.",

                            element.getAttribute("id"), element.getAttribute("version"));

                }

            }

        }

        return facetVersions;

    }

    public void init(IProject project, IProjectTemplateContext context, IProgressMonitor monitor) {

        if (installer == null) {

            installer = CompoundInstaller.combine(null, element.getChildren());

        }

        final ITemplateInstaller templateInstaller;

        final IMobileWebRuntime runtime = context.getRuntime();

        if (runtime == null) {

            templateInstaller = installer;

        } else {

            templateInstaller = CompoundInstaller.combine(installer, TMWCoreUI.getProjectTemplateManager()

                    .getEmptyProjectTemplate(runtime));

        }

        templateInstaller.prepare(project, context);

        try {

            final IPath[] files = templateInstaller.getFiles();

            monitor.beginTask("Copying project files", files.length * 10);

            templateInstaller.copyFiles(files, new SubProgressMonitor(monitor, files.length * 10));

            final IRunnableWithProgress action = templateInstaller.getPostCreateAction();

        } catch (CoreException e) {

            TMWCoreUI.log(e);

        } finally {

            templateInstaller.cleanup();

        }

    }

    public Map<String, String> getDefaultParameterValues() {

        if (parameters == null) {

            parameters = new TreeMap<String, String>();

            for (IConfigurationElement el : element.getChildren()) {

                if ("default-parameter-value".equals(el.getName())) {

                    parameters.put(el.getAttribute("name"), el.getAttribute("value"));

                }

            }

        }

        return parameters;

    }

    public String getId() {

        return element.getAttribute("id");

    }

}