EDIT

/**

* Copyright (C) 2018 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.view.name;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.EnumSet;

import java.util.HashSet;

import java.util.List;

import java.util.UUID;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Scope;

import org.vaadin.spring.events.annotation.EventBusListenerMethod;

import com.vaadin.spring.annotation.SpringComponent;

import eu.etaxonomy.cdm.api.service.DeleteResult;

import eu.etaxonomy.cdm.api.service.IService;

import eu.etaxonomy.cdm.api.service.dto.RegistrationDTO;

import eu.etaxonomy.cdm.api.service.name.TypeDesignationSetManager.TypeDesignationWorkingSet;

import eu.etaxonomy.cdm.api.service.registration.IRegistrationWorkingSetService;

import eu.etaxonomy.cdm.model.common.Annotation;

import eu.etaxonomy.cdm.model.name.NameTypeDesignation;

import eu.etaxonomy.cdm.model.name.NameTypeDesignationStatus;

import eu.etaxonomy.cdm.model.name.TaxonName;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.cdm.persistence.hibernate.permission.CRUD;

import eu.etaxonomy.cdm.service.CdmFilterablePagingProvider;

import eu.etaxonomy.cdm.service.CdmStore;

import eu.etaxonomy.cdm.service.UserHelperAccess;

import eu.etaxonomy.cdm.vaadin.component.CdmBeanItemContainerFactory;

import eu.etaxonomy.cdm.vaadin.event.EditorActionTypeFilter;

import eu.etaxonomy.cdm.vaadin.event.EntityChangeEvent;

import eu.etaxonomy.cdm.vaadin.event.EntityChangeEvent.Type;

import eu.etaxonomy.cdm.vaadin.event.TaxonNameEditorAction;

import eu.etaxonomy.cdm.vaadin.event.ToOneRelatedEntityButtonUpdater;

import eu.etaxonomy.cdm.vaadin.event.ToOneRelatedEntityReloader;

import eu.etaxonomy.cdm.vaadin.ui.config.TaxonNamePopupEditorConfig;

import eu.etaxonomy.cdm.vaadin.util.CdmTitleCacheCaptionGenerator;

import eu.etaxonomy.vaadin.mvp.AbstractCdmEditorPresenter;

import eu.etaxonomy.vaadin.mvp.AbstractView;

import eu.etaxonomy.vaadin.mvp.BeanInstantiator;

import eu.etaxonomy.vaadin.mvp.BoundField;

import eu.etaxonomy.vaadin.ui.view.PopupView;

/**

 * @author a.kohlbecker

 * @since Jan 26, 2018

 *

 */

@SpringComponent

@Scope("prototype")

public class NameTypeDesignationPresenter

        extends AbstractCdmEditorPresenter<NameTypeDesignation, NameTypeDesignationEditorView> {

    @Autowired

    private IRegistrationWorkingSetService registrationWorkingSetService;

    HashSet<TaxonName> typifiedNamesAsLoaded;

    private TaxonName typifiedNameInContext;

    protected static BeanInstantiator<NameTypeDesignation> defaultBeanInstantiator = new BeanInstantiator<NameTypeDesignation>() {

        @Override

        public NameTypeDesignation createNewBean() {

            return NameTypeDesignation.NewInstance();

        }

    };

    @Override

    protected BeanInstantiator<NameTypeDesignation> defaultBeanInstantiator(){

       return defaultBeanInstantiator;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected NameTypeDesignation loadBeanById(Object identifier) {

        if(identifier instanceof Integer || identifier == null){

            return super.loadBeanById(identifier);

//        } else if(identifier instanceof TypedEntityReference && ((TypedEntityReference)identifier).getType().equals(TaxonName.class)) {

//            typifiedNameInContext = getRepo().getNameService().find(((TypedEntityReference)identifier).getUuid());

//            bean = super.loadBeanById(null);

        } else {

            TypeDesignationWorkingsetEditorIdSet idset = (TypeDesignationWorkingsetEditorIdSet)identifier;

            RegistrationDTO regDTO = registrationWorkingSetService.loadDtoByUuid(idset.registrationUuid);

            typifiedNameInContext = regDTO.getTypifiedName();

            // find the working set

            TypeDesignationWorkingSet typeDesignationWorkingSet = regDTO.getTypeDesignationWorkingSet(idset.baseEntityRef);

            // NameTypeDesignation bameTypeDesignation = regDTO.getNameTypeDesignation(typeDesignationWorkingSet.getBaseEntityReference());

            if(!typeDesignationWorkingSet.getBaseEntityReference().getType().equals(NameTypeDesignation.class)){

                throw new RuntimeException("TypeDesignationWorkingsetEditorIdSet references not a NameTypeDesignation");

            }

            // TypeDesignationWorkingSet for NameTyped only contain one item!!!

            UUID nameTypeDesignationUuid = typeDesignationWorkingSet.getTypeDesignations().get(0).getUuid();

            return super.loadBeanById(nameTypeDesignationUuid);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected NameTypeDesignation loadCdmEntity(UUID uuid) {

        List<String> initStrategy = Arrays.asList(new String []{

                "$",

                "annotations.*", // * is needed as log as we are using a table in FilterableAnnotationsField

                "typifiedNames.typeDesignations", // important !!

                "typeName.$",

                "citation.authorship.$",

                }

        );

        NameTypeDesignation typeDesignation;

        if(uuid != null){

            typeDesignation = (NameTypeDesignation) getRepo().getNameService().loadTypeDesignation(uuid, initStrategy);

        } else {

            typeDesignation = createNewBean();

        }

        typifiedNamesAsLoaded = new HashSet<>(typeDesignation.getTypifiedNames());

        return typeDesignation;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void handleViewEntered() {

        CdmBeanItemContainerFactory selectFactory = new CdmBeanItemContainerFactory(getRepo());

        getView().getTypeStatusSelect().setContainerDataSource(selectFactory.buildBeanItemContainer(NameTypeDesignationStatus.class));

        getView().getTypeStatusSelect().setItemCaptionPropertyId("description");

        getView().getCitationCombobox().getSelect().setCaptionGenerator(new CdmTitleCacheCaptionGenerator<Reference>());

        CdmFilterablePagingProvider<Reference,Reference> referencePagingProvider = pagingProviderFactory.referencePagingProvider();

        getView().getCitationCombobox().loadFrom(referencePagingProvider, referencePagingProvider, referencePagingProvider.getPageSize());

        getView().getCitationCombobox().setNestedButtonStateUpdater(new ToOneRelatedEntityButtonUpdater<Reference>(getView().getCitationCombobox()));

        getView().getCitationCombobox().getSelect().addValueChangeListener(new ToOneRelatedEntityReloader<>(getView().getCitationCombobox(), this));

        CdmFilterablePagingProvider<TaxonName,TaxonName> namePagingProvider = new CdmFilterablePagingProvider<TaxonName, TaxonName>(getRepo().getNameService());

        getView().getTypeNameField().loadFrom(namePagingProvider, namePagingProvider, namePagingProvider.getPageSize());

        getView().getTypeNameField().setNestedButtonStateUpdater(new ToOneRelatedEntityButtonUpdater<TaxonName>(getView().getTypeNameField()));

        getView().getTypeNameField().getSelect().addValueChangeListener(new ToOneRelatedEntityReloader<>(getView().getTypeNameField(), this));

        getView().getTypifiedNamesComboboxSelect().setPagingProviders(namePagingProvider, namePagingProvider, namePagingProvider.getPageSize(), this);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void guaranteePerEntityCRUDPermissions(UUID identifier) {

        if(crud != null){

            newAuthorityCreated = UserHelperAccess.userHelper().createAuthorityForCurrentUser(NameTypeDesignation.class, identifier, crud, null);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void guaranteePerEntityCRUDPermissions(NameTypeDesignation bean) {

        // TODO Auto-generated method stub

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected IService<NameTypeDesignation> getService() {

        // No TypeDesignationService :( so I need override the generic save and delete methods

        return null;

    }

    @Override

    protected void deleteBean(NameTypeDesignation bean){

        // deleteTypedesignation(uuid, uuid) needs to be called so the name is loaded in the transaction of the method and is saved.

        DeleteResult deletResult = getRepo().getNameService().deleteTypeDesignation(typifiedNameInContext.getUuid(), bean.getUuid());

        if(deletResult.isOk()){

            EntityChangeEvent changeEvent = new EntityChangeEvent(bean, Type.REMOVED, (AbstractView) getView());

            viewEventBus.publish(this, changeEvent);

        } else {

            CdmStore.handleDeleteresultInError(deletResult, getRepo().getSession());

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected NameTypeDesignation preSaveBean(NameTypeDesignation bean) {

        // the typifiedNames can only be set on the name side, so we need to

        // handle changes explicitly here

        HashSet<TaxonName> typifiedNames = new HashSet<>(bean.getTypifiedNames());

        // handle adds

        for(TaxonName name : typifiedNames){

            if(name == null){

                throw new NullPointerException("typifiedName must not be null");

            }

            if(!name.getTypeDesignations().contains(bean)){

                name.addTypeDesignation(bean, false);

            }

        }

        // handle removed

        for(TaxonName name : typifiedNamesAsLoaded){

            if(!typifiedNames.contains(name)){

                name.removeTypeDesignation(bean);

            }

            // FIXME do we need to save the names here or is the delete cascaded from the typedesignation to the name?

        }

        // handle annotation changes

        List<Annotation> annotations = getView().getAnnotationsField().getValue();

        List<Annotation> currentAnnotations = new ArrayList<>(bean.getAnnotations());

        List<Annotation> annotationsSeen = new ArrayList<>();

        for(Annotation a : annotations){

            if(a == null){

                continue;

            }

            if(!currentAnnotations.contains(a)){

                bean.addAnnotation(a);

            }

            annotationsSeen.add(a);

        }

        for(Annotation a : currentAnnotations){

            if(!annotationsSeen.contains(a)){

                bean.removeAnnotation(a);

            }

        }

        return bean;

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void onTaxonNameEditorActionAdd(TaxonNameEditorAction action){

        if(!isFromOwnView(action)){

            return;

        }

        TaxonNamePopupEditor typeNamePopup = openPopupEditor(TaxonNamePopupEditor.class, action);

        typeNamePopup.grantToCurrentUser(EnumSet.of(CRUD.UPDATE, CRUD.DELETE));

        typeNamePopup.withDeleteButton(true);

        TaxonNamePopupEditorConfig.configure(typeNamePopup);

        typeNamePopup.loadInEditor(null);

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onTaxonNameEditorActionEdit(TaxonNameEditorAction action){

        if(!isFromOwnView(action)){

            return;

        }

        TaxonNamePopupEditor typeNamePopup = openPopupEditor(TaxonNamePopupEditor.class, action);

        typeNamePopup.grantToCurrentUser(EnumSet.of(CRUD.UPDATE, CRUD.DELETE));

        typeNamePopup.withDeleteButton(true);

        TaxonNamePopupEditorConfig.configure(typeNamePopup);

        typeNamePopup.loadInEditor(action.getEntityUuid());

    }

    @EventBusListenerMethod

    public void onEntityChangeEvent(EntityChangeEvent<?>event){

        BoundField boundTargetField = boundTargetField((PopupView) event.getSourceView());

        if(boundTargetField != null){

            if(boundTargetField.matchesPropertyIdPath("typeName")){

                if(event.isCreateOrModifiedType()){

                    getCache().load(event.getEntity());

                    if(event.isCreatedType()){

                        getView().getTypeNameField().setValue((TaxonName) event.getEntity());

                    } else {

                        getView().getTypeNameField().reload();

                    }

                }

                if(event.isRemovedType()){

                    getView().getTypeNameField().selectNewItem(null);

                }

            }

        }

    }

}