/**

 * 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:

 */

import java.util.Arrays;

import java.util.Collection;

import java.util.Collections;

import java.util.HashSet;

import java.util.Set;

import org.eclipse.core.databinding.DataBindingContext;

import org.eclipse.core.resources.IncrementalProjectBuilder;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.core.runtime.SubProgressMonitor;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.wizard.IWizardPage;

import org.eclipse.ui.INewWizard;

import org.eclipse.ui.IWorkbench;

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

import org.eclipse.wst.common.project.facet.core.IFacetedProject.Action;

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

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.runtime.IRuntime;

import org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard;

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

import org.symbian.tools.tmw.core.projects.IFProjSupport;

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

/**

 * @author Eugene Ostroukhov (eugeneo@symbian.org)

 */

public final class NewApplicationWizard extends ModifyFacetedProjectWizard implements INewWizard {

    private final PageContributions contributions = new PageContributions();

    private final DataBindingContext databindingContext = new DataBindingContext();

    private NewApplicationFacetsWizardPage facetsPage;

    private NewApplicationDetailsWizardPage firstPage;

    private IStructuredSelection selection;

    private IProjectTemplate template = null;

    private INewApplicationWizardPage[] templatePages = new INewApplicationWizardPage[0];

    private NewApplicationTemplateWizardPage templatesPage;

    private final WizardContext wizardContext = new WizardContext();

    private IWorkbench workbench;

    public NewApplicationWizard() {

        setShowFacetsSelectionPage(false);

    }

    public void addPages() {

        this.firstPage = createFirstPage();

        addPage(this.firstPage);

        final IFacetedProject project = getFacetedProject();

        final Set<IProjectFacetVersion> facets;

        if (project == null) {

            facets = Collections.emptySet();

        } else {

            facets = project.getProjectFacets();

        }

        facetsPage = new NewApplicationFacetsWizardPage(facets, getFacetedProjectWorkingCopy());

        addPage(facetsPage);

        templatesPage = new NewApplicationTemplateWizardPage(wizardContext, databindingContext);

        addPage(templatesPage);

        super.addPages();

    }

    public boolean canFinish() {

        return getNextPage(getContainer().getCurrentPage()) == null && this.firstPage.isPageComplete()

                && super.canFinish();

    }

    protected NewApplicationDetailsWizardPage createFirstPage() {

        firstPage = new NewApplicationDetailsWizardPage(wizardContext, databindingContext);

        return firstPage;

    }

    @Override

    public IWizardPage getNextPage(final IWizardPage page) {

        final IFacetedProjectWorkingCopy fpjwc = getFacetedProjectWorkingCopy();

        if (page == this.firstPage) {

            fpjwc.setProjectName(getProjectName());

            fpjwc.setProjectLocation(getProjectLocation());

            final IFProjSupport fprojSupport = TMWCore.getFProjSupport();

            IRuntime runtime = fprojSupport.getRuntime(wizardContext.getRuntime());

            fpjwc.setTargetedRuntimes(Collections.singleton(runtime));

            fpjwc.setPrimaryRuntime(runtime);

            Set<IProjectFacetVersion> facets = getCurrentFixedFacetVersions();

            facets.addAll(fpjwc.getProjectFacets());

            fpjwc.setProjectFacets(facets);

            fpjwc.setFixedProjectFacets(getCurrentFixedFacets());

        } else if (page == this.templatesPage) {

            Set<IProjectFacetVersion> facets = getCurrentFixedFacetVersions();

            facets.addAll(fpjwc.getProjectFacets());

            fpjwc.setProjectFacets(facets);

            fpjwc.setFixedProjectFacets(getCurrentFixedFacets());

        }

        final Collection<Action> actions = fpjwc.getProjectFacetActions();

        final Collection<Action> toReplace = new HashSet<IFacetedProject.Action>();

        for (Action action : actions) {

            if (action.getConfig() == ProjectCreationConfigFactory.CONFIG_STANDIN) {

                toReplace.add(action);

            }

        }

        for (Action action : toReplace) {

            fpjwc.setProjectFacetActionConfig(action.getProjectFacetVersion().getProjectFacet(), wizardContext);

        }

        IWizardPage nextPage = super.getNextPage(page);

        return nextPage;

    }

    private Set<IProjectFacet> getCurrentFixedFacets() {

        final Set<IProjectFacetVersion> fixedFacets = getCurrentFixedFacetVersions();

        final Set<IProjectFacet> facets = new HashSet<IProjectFacet>();

        for (IProjectFacetVersion facet : fixedFacets) {

            facets.add(facet.getProjectFacet());

        }

        return facets;

    }

    private Set<IProjectFacetVersion> getCurrentFixedFacetVersions() {

        final IFProjSupport fprojSupport = TMWCore.getFProjSupport();

        Set<IProjectFacetVersion> facets = new HashSet<IProjectFacetVersion>(

                fprojSupport.getFixedFacetsVersions(wizardContext.getRuntime()));

        if (wizardContext.getTemplate() != null) {

            facets.addAll(Arrays.asList(wizardContext.getTemplate().getRequiredFacets()));

        }

        return facets;

    }

    public IWizardPage[] getPages() {

        final IProjectTemplate current = wizardContext.getTemplate();

        if (template != current) {

            for (INewApplicationWizardPage page : templatePages) {

                page.remove();

                page.dispose();

            }

            if (current == null) {

                template = null;

                templatePages = new INewApplicationWizardPage[0];

            } else {

                template = current;

                templatePages = contributions.createPages(template.getId());

                for (INewApplicationWizardPage page : templatePages) {

                    page.setWizard(this);

                    page.init(wizardContext, databindingContext);

                }

            }

        }

        final IWizardPage[] base = super.getPages();

        final IWizardPage[] pages = new IWizardPage[base.length + 3 + templatePages.length];

        pages[0] = this.firstPage;

        pages[1] = this.templatesPage;

        pages[2] = this.facetsPage;

        if (templatePages.length > 0) {

            System.arraycopy(templatePages, 0, pages, 3, templatePages.length);

        }

        System.arraycopy(base, 0, pages, 2, base.length);

        return pages;

    }

    protected IPath getProjectLocation() {

        return firstPage.getLocationPath();

    }

    protected String getProjectName() {

        return wizardContext.getProjectName();

    }

    /**

     * Returns the selection that this wizard was launched from.

     * 

     * @return the selection that this wizard was launched from

     * @since 1.4

     */

    public IStructuredSelection getSelection() {

        return this.selection;

    }

    /**

     * Returns the workbench that this wizard belongs to.

     * 

     * @return the workbench that this wizard belongs to

     * @since 1.4

     */

    public IWorkbench getWorkbench() {

        return this.workbench;

    }

    public void init(final IWorkbench workbench, final IStructuredSelection selection) {

        this.workbench = workbench;

        this.selection = selection;

    }

    @Override

    protected void performFinish(IProgressMonitor monitor) throws CoreException {

        monitor.beginTask("Preparing project", 300);

        super.performFinish(new SubProgressMonitor(monitor, 20));

        wizardContext.initialize(getFacetedProject().getProject(), new SubProgressMonitor(monitor, 80));

        getFacetedProject().getProject().build(IncrementalProjectBuilder.CLEAN_BUILD,

                new SubProgressMonitor(monitor, 100));

        getFacetedProject().getProject().build(IncrementalProjectBuilder.FULL_BUILD,

                new SubProgressMonitor(monitor, 100));

        monitor.done();

    }

}