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package org.netbeans.modules.apisupport.project.ui.customizer;

import java.awt.event.ActionEvent;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Iterator;

import java.util.SortedSet;

import javax.swing.AbstractAction;

import javax.swing.Action;

import org.netbeans.api.project.FileOwnerQuery;

import org.netbeans.api.project.Project;

import org.netbeans.api.project.ProjectManager;

import org.netbeans.modules.apisupport.project.ApisupportAntUtils;

import org.netbeans.modules.apisupport.project.NbModuleProject;

import org.openide.ErrorManager;

import org.openide.awt.ActionID;

import org.openide.awt.ActionReference;

import org.openide.awt.ActionReferences;

import org.openide.awt.ActionRegistration;

import org.openide.awt.DynamicMenuContent;

import org.openide.filesystems.FileObject;

import org.openide.filesystems.FileUtil;

import org.openide.util.ContextAwareAction;

import org.openide.util.Lookup;

import org.openide.util.Mutex;

import org.openide.util.MutexException;

import org.openide.util.NbBundle.Messages;

/**

 * Submenu which permits the user to export or unexport appropriate package.

 * Must be locate in NetBeans Module Project.

 */

@ActionID(

        category = "Project",

        id = "org.netbeans.modules.apisupport.project.ExportPackageAction")

@ActionRegistration(

        displayName = "#CTL_ExportPackageAction", lazy = false)

@ActionReferences({

    @ActionReference(path = "Projects/package/Actions", position = 100),

})

@Messages({"CTL_UnexportPackageAction=Unexport Package","CTL_ExportPackageAction=Export Package"})

public final class ExportPackageAction extends AbstractAction implements ContextAwareAction{

    @Override

    public void actionPerformed(ActionEvent ev) {

        //well, since someone can assign a shortcut ti the action, the invokation is unvaiodable, make it noop        

        //assert false : "Action should never be called without a context";

    }

    @Override

    public Action createContextAwareInstance(Lookup actionContext) {

        Collection<FileObject> selectedPackages = (Collection<FileObject>) actionContext.lookupAll(FileObject.class);

        Project project = FileOwnerQuery.getOwner(selectedPackages.iterator().hasNext()?selectedPackages.iterator().next():null);

        NbModuleProject nbmProject = null;

        if((nbmProject = project.getLookup().lookup(NbModuleProject.class)) != null)

        {

            Collection<String> packages = new ArrayList<String>();

            SortedSet<String> availablePublicPackages = ApisupportAntUtils.scanProjectForPackageNames(FileUtil.toFile(nbmProject.getProjectDirectory()), false);

            final SingleModuleProperties properties = SingleModuleProperties.getInstance(nbmProject);

            String packageNameIter = "";

            boolean export = false;

            for (Iterator<FileObject> it = selectedPackages.iterator(); it.hasNext();) {

                FileObject packageIter = it.next();

                if(!availablePublicPackages.contains(packageNameIter = packageIter.getPath().substring(nbmProject.getSourceDirectory().getPath().length()+1).replace('/', '.'))) {

                    continue;

                }

                packages.add(packageNameIter);

                if(!properties.getPublicPackagesModel().getSelectedPackages().contains(packageNameIter) && !export) {

                    export = true;

                }

            }

            return new ContextAction(!packages.isEmpty(), nbmProject, packages, properties, export);

        }

        return new ContextAction(false);

    }

    /**

     * The particular instance of this action for a given package(s).

     */

    private static final class ContextAction extends AbstractAction {

        private NbModuleProject nbmProject;

        private final SingleModuleProperties properties;

        private Collection<String> packages;

        private boolean export;

        public ContextAction(boolean enabled) {

            this(enabled, null, null, null, true);

        }

        public ContextAction(boolean enabled, NbModuleProject nbmProject, Collection<String> packages, SingleModuleProperties properties, boolean export) {

            super(export?Bundle.CTL_ExportPackageAction():Bundle.CTL_UnexportPackageAction());

            this.nbmProject = nbmProject;

            this.packages = packages;

            this.properties = properties;

            this.export = export;

            this.putValue(DynamicMenuContent.HIDE_WHEN_DISABLED, true);

            this.setEnabled(enabled);

        }

        @Override

        public void actionPerformed(ActionEvent evt) {

            CustomizerComponentFactory.PublicPackagesTableModel tableModel = properties.getPublicPackagesModel();

            for(String packageIter:this.packages) {

                for(int i = 0; i < tableModel.getRowCount(); i++) {

                    if(tableModel.getValueAt(i, 1).equals(packageIter)) {

                        tableModel.setValueAt(this.export, i, 0);

                        break;

                    }

                }

            }

            try {

            ProjectManager.mutex().writeAccess(new Mutex.ExceptionAction<Void>() {

                @Override public Void run() throws IOException {

                    properties.storeProperties();

                    ProjectManager.getDefault().saveProject(nbmProject);

                    return null;

                }

            });

            } catch (MutexException e) {

                ErrorManager.getDefault().notify((IOException)e.getException());

            }

        }

    }

}