/*
 *   Licensed to the Apache Software Foundation (ASF) under one
 *   or more contributor license agreements.  See the NOTICE file
 *   distributed with this work for additional information
 *   regarding copyright ownership.  The ASF licenses this file
 *   to you 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.directory.fortress.web.panel;


import com.googlecode.wicket.jquery.ui.form.spinner.Spinner;
import com.googlecode.wicket.kendo.ui.form.button.AjaxButton;
import com.googlecode.wicket.kendo.ui.form.combobox.ComboBox;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.AjaxCallListener;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.apache.wicket.ajax.markup.html.form.AjaxSubmitLink;
import org.apache.wicket.event.IEvent;
import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponentPanel;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.spring.injection.annot.SpringBean;
import org.apache.directory.fortress.web.common.GlobalIds;
import org.apache.directory.fortress.web.control.SecUtils;
import org.apache.directory.fortress.web.event.SaveModelEvent;
import org.apache.directory.fortress.web.control.SecureIndicatingAjaxButton;
import org.apache.directory.fortress.web.event.SelectModelEvent;
import org.apache.directory.fortress.core.AdminMgr;
import org.apache.directory.fortress.core.model.SDSet;
import org.apache.directory.fortress.core.model.UserRole;

import java.util.ArrayList;
import java.util.List;


/**
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 * @version $Rev$
 * Date: 6/13/13
 */
public class SDDetailPanel extends FormComponentPanel
{
    /** Default serialVersionUID */
    private static final long serialVersionUID = 1L;
    @SpringBean
    private AdminMgr adminMgr;
    private static final String MEMBERS_SELECTION = "membersSelection";
    private static final Logger log = Logger.getLogger( SDDetailPanel.class.getName() );
    private Form editForm;
    private Displayable display;
    private boolean isStatic;


    public Form getForm()
    {
        return this.editForm;
    }


    public SDDetailPanel( String id, Displayable display, boolean isStatic )
    {
        super( id );
        this.adminMgr.setAdmin( SecUtils.getSession( this ) );
        this.isStatic = isStatic;
        this.editForm = new SDDetailForm( GlobalIds.EDIT_FIELDS, new CompoundPropertyModel<>( new SDSet() ) );
        this.display = display;
        add( editForm );
    }

    public class SDDetailForm extends Form
    {
        /** Default serialVersionUID */
        private static final long serialVersionUID = 1L;
        private String internalId;
        private ComboBox<String> membersCB;
        private String membersSelection;
        private Component component;
        private List<String> members = new ArrayList<>();
        private UserRole roleConstraint = new UserRole();
        private TextField nameTF;
        private SecureIndicatingAjaxButton addPB;

        public SDDetailForm( String id, final IModel<SDSet> model )
        {
            super( id, model );
            String opNameAdd;
            String opNameUpdate;
            String opNameDelete;
            if ( isStatic )
            {
                opNameAdd = "createSsdSet";
                opNameUpdate = "updateSsdSet";
                opNameDelete = "deleteSsdSet";
            }
            else
            {
                opNameAdd = "createDsdSet";
                opNameUpdate = "updateDsdSet";
                opNameDelete = "deleteDsdSet";
            }

            add( addPB = new SecureIndicatingAjaxButton( GlobalIds.ADD, GlobalIds.ADMIN_MGR, opNameAdd )
            {
                /** Default serialVersionUID */
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form form )
                {
                    log.debug( ".onSubmit Add" );
                    SDSet sdSet = ( SDSet ) form.getModel().getObject();
                    updateEntityWithComboData( sdSet );
                    try
                    {
                        if ( isStatic )
                        {
                            adminMgr.createSsdSet( sdSet );
                        }
                        else
                        {
                            adminMgr.createDsdSet( sdSet );
                        }
                        SaveModelEvent.send( getPage(), this, sdSet, target, SaveModelEvent.Operations.ADD );
                        component = editForm;
                        String msg = "SDSet: " + sdSet.getName() + " has been added";
                        display.setMessage( msg );
                    }
                    catch ( org.apache.directory.fortress.core.SecurityException se )
                    {
                        String error = ".onSubmit caught SecurityException=" + se;
                        log.error( error );
                        display.setMessage( error );
                        display.display();
                    }
                }


                @Override
                public void onError( AjaxRequestTarget target, Form form )
                {
                    log.info( "SDDetailPanel.add.onError" );
                    target.add();
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );
            add( new SecureIndicatingAjaxButton( GlobalIds.COMMIT, GlobalIds.ADMIN_MGR, opNameUpdate )
            {
                /** Default serialVersionUID */
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form form )
                {
                    log.debug( ".onSubmit Commit" );
                    SDSet sdSet = ( SDSet ) form.getModel().getObject();
                    try
                    {
                        updateEntityWithComboData( sdSet );
                        if ( isStatic )
                            adminMgr.updateSsdSet( sdSet );
                        else
                            adminMgr.updateDsdSet( sdSet );
                        String msg = "SDSet: " + sdSet.getName() + " has been updated";
                        SaveModelEvent.send( getPage(), this, sdSet, target, SaveModelEvent.Operations.UPDATE );
                        component = editForm;
                        display.setMessage( msg );
                        membersSelection = "";
                    }
                    catch ( org.apache.directory.fortress.core.SecurityException se )
                    {
                        String error = ".onSubmit caught SecurityException=" + se;
                        log.error( error );
                        display.setMessage( error );
                        display.display();
                    }
                }


                @Override
                public void onError( AjaxRequestTarget target, Form form )
                {
                    log.warn( "SDDetailPanel.commmit.onError" );
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );

            add( new SecureIndicatingAjaxButton( GlobalIds.DELETE, GlobalIds.ADMIN_MGR, opNameDelete )
            {
                /** Default serialVersionUID */
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form form )
                {
                    log.debug( ".onSubmit Delete" );
                    SDSet sdSet = ( SDSet ) form.getModel().getObject();

                    try
                    {
                        if ( isStatic )
                        {
                            adminMgr.deleteSsdSet( sdSet );
                        }
                        else
                        {
                            adminMgr.deleteDsdSet( sdSet );
                        }
                        clearDetailFields();
                        String msg = "SDSet: " + sdSet.getName() + " has been deleted";
                        component = editForm;
                        SaveModelEvent.send( getPage(), this, sdSet, target, SaveModelEvent.Operations.DELETE );
                        display.setMessage( msg );
                    }
                    catch ( org.apache.directory.fortress.core.SecurityException se )
                    {
                        String error = ".onSubmit caught SecurityException=" + se;
                        log.error( error );
                        display.setMessage( error );
                        display.display();
                    }
                }


                @Override
                public void onError( AjaxRequestTarget target, Form form )
                {
                    log.warn( "SDDetailPanel.delete.onError" );
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );

            add( new AjaxSubmitLink( GlobalIds.CANCEL )
            {
                /** Default serialVersionUID */
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form form )
                {
                    clearDetailFields();
                    component = editForm;
                    String msg = "SDSet cancelled input form";
                    display.setMessage( msg );
                }


                @Override
                public void onError( AjaxRequestTarget target, Form form )
                {
                    log.warn( "SDDetailPanel.cancel.onError" );
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );

            if ( isStatic )
            {
                add( new Label( "sdAssignmentsLabel", "Static Separation of Duties Detail" ) );
            }
            else
            {
                add( new Label( "sdAssignmentsLabel", "Dynamic Separation of Duties Detail" ) );
            }

            nameTF = new TextField( "name" );
            add( nameTF );
            TextField description = new TextField( "description" );
            description.setRequired( false );
            add( description );
            add( new Spinner<Integer>( "cardinality" ) );
            Label iid = new Label( "id" );
            add( iid );
            membersCB = new ComboBox<>( "members", new PropertyModel<String>( this, MEMBERS_SELECTION ), members );
            membersCB.setOutputMarkupId( true );
            add( membersCB );
            addRoleSearchModal();

            add( new AjaxButton( "members.delete" )
            {
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form<?> form )
                {
                    String msg = "clicked on members.delete";
                    if ( StringUtils.isNotEmpty( membersSelection ) )
                    {
                        msg += " selection:" + membersSelection;
                        SDSet sdSet = ( SDSet ) form.getModel().getObject();
                        if ( sdSet.getMembers() != null )
                        {
                            sdSet.getMembers().remove( membersSelection );
                            members.remove( membersSelection );
                            membersSelection = "";
                            component = editForm;
                            msg += ", was removed from local, commit to persist changes on server";
                        }
                        else
                        {
                            msg += ", no action taken because role does not have members set";
                        }
                    }
                    else
                    {
                        msg += ", no action taken because members selection is empty";
                    }
                    display.setMessage( msg );
                    log.debug( msg );
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );
        }


        private void addRoleSearchModal()
        {
            final ModalWindow rolesModalWindow;
            add( rolesModalWindow = new ModalWindow( "rolesmodal" ) );
            final RoleSearchModalPanel roleSearchModalPanel = new RoleSearchModalPanel(
                rolesModalWindow.getContentId(), rolesModalWindow, false );
            rolesModalWindow.setContent( roleSearchModalPanel );
            rolesModalWindow.setWindowClosedCallback( new ModalWindow.WindowClosedCallback()
            {
                /** Default serialVersionUID */
                private static final long serialVersionUID = 1L;


                @Override
                public void onClose( AjaxRequestTarget target )
                {
                    roleConstraint = roleSearchModalPanel.getRoleSelection();
                    if ( roleConstraint != null )
                    {
                        membersSelection = roleConstraint.getName();
                        component = editForm;
                        //target.add( membersCB );
                    }
                }
            } );

            add( new AjaxButton( "roles.search" )
            {
                private static final long serialVersionUID = 1L;


                @Override
                protected void onSubmit( AjaxRequestTarget target, Form<?> form )
                {
                    String msg = "clicked on roles search";
                    msg += membersSelection != null ? ": " + membersSelection : "";
                    roleSearchModalPanel.setRoleSearchVal( membersSelection );
                    display.setMessage( msg );
                    log.debug( msg );
                    target.prependJavaScript( GlobalIds.WICKET_WINDOW_UNLOAD_CONFIRMATION_FALSE );
                    rolesModalWindow.show( target );
                }


                @Override
                protected void updateAjaxAttributes( AjaxRequestAttributes attributes )
                {
                    super.updateAjaxAttributes( attributes );
                    AjaxCallListener ajaxCallListener = new AjaxCallListener()
                    {
                        /** Default serialVersionUID */
                        private static final long serialVersionUID = 1L;


                        @Override
                        public CharSequence getFailureHandler( Component component )
                        {
                            return GlobalIds.WINDOW_LOCATION_REPLACE_COMMANDER_HOME_HTML;
                        }
                    };
                    attributes.getAjaxCallListeners().add( ajaxCallListener );
                }
            } );

            rolesModalWindow.setTitle( "Role Selection Modal" );
            rolesModalWindow.setInitialWidth( 700 );
            rolesModalWindow.setInitialHeight( 450 );
            rolesModalWindow.setCookieName( "role-assign-modal" );
        }


        private void updateEntityWithComboData( SDSet sdSet )
        {
            if ( StringUtils.isNotEmpty( membersSelection ) )
            {
                sdSet.setMember( membersSelection );
                members.add( membersSelection );
            }
        }


        @Override
        public void onEvent( final IEvent<?> event )
        {
            if ( event.getPayload() instanceof SelectModelEvent )
            {
                SelectModelEvent modelEvent = ( SelectModelEvent ) event.getPayload();
                SDSet sdSet = ( SDSet ) modelEvent.getEntity();
                this.setModelObject( sdSet );
                if ( CollectionUtils.isNotEmpty( sdSet.getMembers() ) )
                {
                    members = new ArrayList<>( sdSet.getMembers() );
                    membersCB = new ComboBox<>( "members", new PropertyModel<String>( this, MEMBERS_SELECTION ),
                        members );
                }
                else
                {
                    members = new ArrayList<>();
                    membersCB = new ComboBox<>( "members", new PropertyModel<String>( this, MEMBERS_SELECTION ),
                        members );
                }
                nameTF.setEnabled( false );
                addPB.setEnabled( false );
                editForm.addOrReplace( membersCB );
                String msg = "SDSet: " + sdSet.getName() + " has been selected";
                log.debug( msg );
                display.setMessage( msg );
                component = editForm;
            }
            else if ( event.getPayload() instanceof AjaxRequestTarget )
            {
                // only add the form to ajax target if something has changed...
                if ( component != null )
                {
                    AjaxRequestTarget target = ( ( AjaxRequestTarget ) event.getPayload() );
                    log.debug( ".onEvent AjaxRequestTarget: " + target.toString() );
                    target.add( component );
                    component = null;
                }

                display.display( ( AjaxRequestTarget ) event.getPayload() );
            }
        }

        private void clearDetailFields()
        {
            SDSet sdSet = new SDSet();
            if ( isStatic )
                sdSet.setType( SDSet.SDType.STATIC );
            else
                sdSet.setType( SDSet.SDType.DYNAMIC );
            setModelObject( sdSet );
            membersSelection = "";
            members = new ArrayList<>();
            membersCB = new ComboBox<>( "members", new PropertyModel<String>( this, MEMBERS_SELECTION ),
                members );
            nameTF.setEnabled( true );
            addPB.setEnabled( true );
            editForm.addOrReplace( membersCB );
        }
    }
}