//
// Copyright (c) ZeroC, Inc. All rights reserved.
//

package com.zeroc.IceGridGUI.Application;

import java.awt.Component;
import javax.swing.Icon;
import javax.swing.JPopupMenu;

import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;

import com.zeroc.IceGrid.*;
import com.zeroc.IceGridGUI.*;

class ServerTemplate extends Communicator
{
    static public TemplateDescriptor
    copyDescriptor(TemplateDescriptor templateDescriptor)
    {
        TemplateDescriptor copy = templateDescriptor.clone();

        copy.descriptor = PlainServer.copyDescriptor((ServerDescriptor)copy.descriptor);
        return copy;
    }

    @Override
    public Component getTreeCellRendererComponent(
        JTree tree,
        Object value,
        boolean sel,
        boolean expanded,
        boolean leaf,
        int row,
        boolean hasFocus)
    {
        if(_cellRenderer == null)
        {
            _cellRenderer = new DefaultTreeCellRenderer();
            _plainIcon = Utils.getIcon("/icons/16x16/server_template.png");
            _iceboxIcon = Utils.getIcon("/icons/16x16/icebox_server_template.png");
        }

        if(_templateDescriptor.descriptor instanceof IceBoxDescriptor)
        {
            if(expanded)
            {
                _cellRenderer.setOpenIcon(_iceboxIcon);
            }
            else
            {
                _cellRenderer.setClosedIcon(_iceboxIcon);
            }
        }
        else
        {
            if(expanded)
            {
                _cellRenderer.setOpenIcon(_plainIcon);
            }
            else
            {
                _cellRenderer.setClosedIcon(_plainIcon);
            }
        }

        return _cellRenderer.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
    }

    //
    // Actions
    //
    @Override
    public boolean[] getAvailableActions()
    {
        boolean[] actions = new boolean[ACTION_COUNT];
        actions[COPY] = !_ephemeral;

        if(((TreeNode)_parent).getAvailableActions()[PASTE])
        {
            actions[PASTE] = true;
        }
        else
        {
            Object clipboard = getCoordinator().getClipboard();
            actions[PASTE] = clipboard != null &&
                ((isIceBox() && (clipboard instanceof ServiceInstanceDescriptor))
                 || (!isIceBox() && (clipboard instanceof Adapter.AdapterCopy
                                     || clipboard instanceof DbEnvDescriptor)));
        }

        actions[DELETE] = true;

        if(!_ephemeral)
        {
            actions[NEW_ADAPTER] = !_services.initialized();
            actions[NEW_SERVICE] = _services.initialized();
            actions[NEW_SERVICE_FROM_TEMPLATE] = _services.initialized();
            actions[NEW_DBENV] = _dbEnvs.initialized();
        }

        return actions;
    }

    @Override
    public void copy()
    {
        getCoordinator().setClipboard(copyDescriptor(_templateDescriptor));
        getCoordinator().getActionsForMenu().get(PASTE).setEnabled(true);
    }

    @Override
    public JPopupMenu getPopupMenu()
    {
        ApplicationActions actions = getCoordinator().getActionsForPopup();
        if(_popup == null)
        {
            _popup = new JPopupMenu();
            _popup.add(actions.get(NEW_ADAPTER));
            _popup.add(actions.get(NEW_DBENV));
            _popup.add(actions.get(NEW_SERVICE));
            _popup.add(actions.get(NEW_SERVICE_FROM_TEMPLATE));
        }
        actions.setTarget(this);
        return _popup;
    }

    @Override
    public Editor getEditor()
    {
        if(_editor == null)
        {
            _editor = (ServerTemplateEditor)getRoot().getEditor(ServerTemplateEditor.class, this);
        }
        _editor.show(this);
        return _editor;
    }

    @Override
    protected Editor createEditor()
    {
        return new ServerTemplateEditor();
    }

    @Override
    public void destroy()
    {
        ServerTemplates serverTemplates = (ServerTemplates)_parent;

        if(_ephemeral)
        {
            serverTemplates.removeChild(this);
        }
        else
        {
            serverTemplates.removeDescriptor(_id);
            getRoot().removeServerInstances(_id);
            serverTemplates.removeChild(this);
            serverTemplates.getEditable().removeElement(_id, _editable, ServerTemplate.class);
            getRoot().updated();
        }
    }

    @Override
    public boolean isEphemeral()
    {
        return _ephemeral;
    }

    @Override
    public Object getDescriptor()
    {
        return _templateDescriptor;
    }

    @Override
    CommunicatorDescriptor getCommunicatorDescriptor()
    {
        return _templateDescriptor.descriptor;
    }

    @Override
    public Object saveDescriptor()
    {
        //
        // Shallow copy
        //
        TemplateDescriptor clone = _templateDescriptor.clone();
        clone.descriptor = _templateDescriptor.descriptor.clone();
        return clone;
    }

    @Override
    public void restoreDescriptor(Object savedDescriptor)
    {
        TemplateDescriptor clone = (TemplateDescriptor)savedDescriptor;
        //
        // Keep the same object
        //
        _templateDescriptor.parameters = clone.parameters;

        PlainServer.shallowRestore((ServerDescriptor)clone.descriptor,
                                   (ServerDescriptor)_templateDescriptor.descriptor);
    }

     //
    // Application is needed to lookup service templates
    //
    ServerTemplate(boolean brandNew, ServerTemplates parent, String name, TemplateDescriptor descriptor)
        throws UpdateFailedException
    {
        super(parent, name);
        _editable = new Editable(brandNew);
        _ephemeral = false;
        rebuild(descriptor);
    }

    ServerTemplate(ServerTemplates parent, String name, TemplateDescriptor descriptor)
    {
        super(parent, name);
        _ephemeral = true;
        try
        {
            rebuild(descriptor);
        }
        catch(UpdateFailedException e)
        {
            assert false;
        }
    }

    @Override
    void write(XMLWriter writer)
        throws java.io.IOException
    {
        if(!_ephemeral)
        {
            java.util.List<String[]> attributes = new java.util.LinkedList<String[]>();
            attributes.add(createAttribute("id", _id));
            writer.writeStartTag("server-template", attributes);
            writeParameters(writer, _templateDescriptor.parameters, _templateDescriptor.parameterDefaults);

            if(_templateDescriptor.descriptor instanceof IceBoxDescriptor)
            {
                IceBoxDescriptor descriptor = (IceBoxDescriptor)_templateDescriptor.descriptor;

                writer.writeStartTag("icebox", PlainServer.createAttributes(descriptor));

                if(descriptor.description.length() > 0)
                {
                    writer.writeElement("description", descriptor.description);
                }
                PlainServer.writeOptions(writer, descriptor.options);
                PlainServer.writeEnvs(writer, descriptor.envs);

                writePropertySet(writer, "", "", descriptor.propertySet, descriptor.adapters, descriptor.logs);
                writeLogs(writer, descriptor.logs, descriptor.propertySet.properties);
                writeDistribution(writer, descriptor.distrib);

                _adapters.write(writer, descriptor.propertySet.properties);
                _services.write(writer);
                writer.writeEndTag("icebox");
            }
            else
            {
                ServerDescriptor descriptor = (ServerDescriptor)_templateDescriptor.descriptor;

                writer.writeStartTag("server", PlainServer.createAttributes(descriptor));

                if(descriptor.description.length() > 0)
                {
                    writer.writeElement("description", descriptor.description);
                }
                PlainServer.writeOptions(writer, descriptor.options);
                PlainServer.writeEnvs(writer, descriptor.envs);

                writePropertySet(writer, descriptor.propertySet, descriptor.adapters, descriptor.logs);
                writeLogs(writer, descriptor.logs, descriptor.propertySet.properties);
                writeDistribution(writer, descriptor.distrib);

                _adapters.write(writer, descriptor.propertySet.properties);
                _dbEnvs.write(writer);
                writer.writeEndTag("server");
            }
            writer.writeEndTag("server-template");
        }
    }

    @Override
    boolean isIceBox()
    {
        return _templateDescriptor.descriptor instanceof IceBoxDescriptor;
    }

    void rebuild(TemplateDescriptor descriptor) throws UpdateFailedException
    {
        _templateDescriptor = descriptor;

        _adapters.clear();
        _dbEnvs.clear();
        _services.clear();

        if(!_ephemeral)
        {
            _adapters.init(_templateDescriptor.descriptor.adapters);

            if(isIceBox())
            {
                IceBoxDescriptor iceBoxDescriptor = (IceBoxDescriptor)_templateDescriptor.descriptor;

                _services.init(iceBoxDescriptor.services);

                assert _templateDescriptor.descriptor.dbEnvs.size() == 0;
            }
            else
            {
                _dbEnvs.init(_templateDescriptor.descriptor.dbEnvs);
            }
        }
    }

    void rebuild() throws UpdateFailedException
    {
        rebuild(_templateDescriptor);
    }

    void commit()
    {
        _editable.commit();
    }

    Editable getEditable()
    {
        return _editable;
    }

    @Override
    Editable getEnclosingEditable()
    {
        return _editable;
    }

    @Override
    java.util.List<? extends TemplateInstance> findInstances()
    {
        return getRoot().findServerInstances(_id);
    }

    private TemplateDescriptor _templateDescriptor;
    private final boolean _ephemeral;
    private Editable _editable;
    private ServerTemplateEditor _editor;

    static private DefaultTreeCellRenderer _cellRenderer;
    static private Icon _plainIcon;
    static private Icon _iceboxIcon;

    static private JPopupMenu _popup;
}
