EDIT

/**

* Copyright (C) 2017 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.Arrays;

import java.util.EnumSet;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.hibernate.criterion.Restrictions;

import org.springframework.context.annotation.Scope;

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

import com.vaadin.spring.annotation.SpringComponent;

import com.vaadin.ui.AbstractField;

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

import eu.etaxonomy.cdm.model.agent.AgentBase;

import eu.etaxonomy.cdm.model.agent.Person;

import eu.etaxonomy.cdm.model.agent.TeamOrPersonBase;

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

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

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

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

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

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

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

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

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

import eu.etaxonomy.cdm.service.CdmFilterablePagingProvider;

import eu.etaxonomy.cdm.service.initstrategies.AgentBaseInit;

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.ReferenceEditorAction;

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.security.UserHelper;

import eu.etaxonomy.cdm.vaadin.ui.RegistrationUIDefaults;

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

import eu.etaxonomy.cdm.vaadin.view.reference.ReferencePopupEditor;

import eu.etaxonomy.vaadin.component.ReloadableSelect;

import eu.etaxonomy.vaadin.mvp.AbstractCdmEditorPresenter;

import eu.etaxonomy.vaadin.mvp.BeanInstantiator;

/**

 * @author a.kohlbecker

 * @since May 22, 2017

 *

 */

@SpringComponent

@Scope("prototype")

public class TaxonNameEditorPresenter extends AbstractCdmEditorPresenter<TaxonName, TaxonNamePopupEditorView> {

    private static final List<String> BASIONYM_INIT_STRATEGY = Arrays.asList(

            "$",

            "relationsFromThisName",

            "relationsToThisName.type",

            "homotypicalGroup.typifiedNames"

            );

    private static final List<String> REFERENCE_INIT_STRATEGY = Arrays.asList("authorship", "inReference.authorship", "inReference.inReference.authorship", "inReference.inReference.inReference.authorship");

    private static final long serialVersionUID = -3538980627079389221L;

    private static final Logger logger = Logger.getLogger(TaxonNameEditorPresenter.class);

    private ReferencePopupEditor referenceEditorPopup = null;

    private TaxonNamePopupEditor basionymNamePopup = null;

    private CdmFilterablePagingProvider<Reference, Reference> referencePagingProvider;

    private Reference publishedUnit;

    private BeanInstantiator<Reference> newReferenceInstantiator;

    private BeanInstantiator<TaxonName> newBasionymNameInstantiator;

    private AbstractField<TaxonName> basionymSourceField;

    /**

     * {@inheritDoc}

     */

    @Override

    public void handleViewEntered() {

        super.handleViewEntered();

        CdmBeanItemContainerFactory selectFieldFactory = new CdmBeanItemContainerFactory(getRepo());

        getView().getRankSelect().setContainerDataSource(selectFieldFactory.buildBeanItemContainer(TermType.Rank));

        getView().getRankSelect().setItemCaptionPropertyId("label");

        CdmFilterablePagingProvider<AgentBase, TeamOrPersonBase> termOrPersonPagingProvider = new CdmFilterablePagingProvider<AgentBase, TeamOrPersonBase>(getRepo().getAgentService(), TeamOrPersonBase.class);

        termOrPersonPagingProvider.setInitStrategy(AgentBaseInit.TEAM_OR_PERSON_INIT_STRATEGY);

        CdmFilterablePagingProvider<AgentBase, Person> personPagingProvider = new CdmFilterablePagingProvider<AgentBase, Person>(getRepo().getAgentService(), Person.class);

        getView().getCombinationAuthorshipField().setFilterableTeamPagingProvider(termOrPersonPagingProvider, this);

        getView().getCombinationAuthorshipField().setFilterablePersonPagingProvider(personPagingProvider, this);

        getView().getExCombinationAuthorshipField().setFilterableTeamPagingProvider(termOrPersonPagingProvider, this);

        getView().getExCombinationAuthorshipField().setFilterablePersonPagingProvider(personPagingProvider, this);

        getView().getBasionymAuthorshipField().setFilterableTeamPagingProvider(termOrPersonPagingProvider, this);

        getView().getBasionymAuthorshipField().setFilterablePersonPagingProvider(personPagingProvider, this);

        getView().getExBasionymAuthorshipField().setFilterableTeamPagingProvider(termOrPersonPagingProvider, this);

        getView().getExBasionymAuthorshipField().setFilterablePersonPagingProvider(personPagingProvider, this);

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

        referencePagingProvider = new CdmFilterablePagingProvider<Reference, Reference>(getRepo().getReferenceService());

        referencePagingProvider.setInitStrategy(REFERENCE_INIT_STRATEGY);

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

        getView().getNomReferenceCombobox().getSelect().addValueChangeListener(new ToOneRelatedEntityButtonUpdater<Reference>(getView().getNomReferenceCombobox()));

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

        getView().getBasionymComboboxSelect().setCaptionGenerator(new CdmTitleCacheCaptionGenerator<TaxonName>());

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

        basionymPagingProvider.setInitStrategy(BASIONYM_INIT_STRATEGY);

        getView().getBasionymComboboxSelect().setPagingProviders(basionymPagingProvider, basionymPagingProvider, basionymPagingProvider.getPageSize(), this);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected TaxonName loadCdmEntity(UUID identifier) {

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

                "$",

                "rank.vocabulary", // needed for comparing ranks

                "nomenclaturalReference.authorship",

                "nomenclaturalReference.inReference.authorship",

                "nomenclaturalReference.inReference.inReference.authorship",

                "nomenclaturalReference.inReference.inReference.inReference.authorship",

                "status.type",

                "combinationAuthorship.teamMembers",

                "exCombinationAuthorship.teamMembers",

                "basionymAuthorship.teamMembers",

                "exBasionymAuthorship.teamMembers",

                // basionyms: relationsToThisName.fromName

                "relationsToThisName.type",

                "relationsToThisName.fromName.rank",

                "relationsToThisName.fromName.combinationAuthorship.teamMembers",

                "relationsToThisName.fromName.exCombinationAuthorship.teamMembers",

                "relationsToThisName.fromName.nomenclaturalReference.authorship.teamMembers",

                "relationsToThisName.fromName.nomenclaturalReference.inReference.authorship.teamMembers",

                "relationsToThisName.fromName.nomenclaturalReference.inReference.inReference.inReference.authorship.teamMembers",

                "relationsToThisName.fromName.relationsToThisName",

                "relationsToThisName.fromName.relationsFromThisName",

                "relationsFromThisName",

                "homotypicalGroup.typifiedNames"

                }

        );

        TaxonName taxonName;

        if(identifier != null){

            taxonName = getRepo().getNameService().load(identifier, initStrategy);

        } else {

            taxonName = TaxonNameFactory.NewNameInstance(RegistrationUIDefaults.NOMENCLATURAL_CODE, Rank.SPECIES());

        }

        if(getView().isModeEnabled(TaxonNamePopupEditorMode.NOMENCLATURALREFERENCE_SECTION_EDITING_ONLY)){

            if(taxonName.getNomenclaturalReference() != null){

                Reference nomRef = (Reference)taxonName.getNomenclaturalReference();

                //getView().getNomReferenceCombobox().setEnabled(nomRef.isOfType(ReferenceType.Section));

                publishedUnit = nomRef;

                while(publishedUnit.isOfType(ReferenceType.Section) && publishedUnit.getInReference() != null){

                    publishedUnit = nomRef.getInReference();

                }

                // reduce available references to those which are sections of the publishedUnit and the publishedUnit itself

                // referencePagingProvider

                referencePagingProvider.getCriteria().add(Restrictions.or(

                        Restrictions.and(Restrictions.eq("inReference", publishedUnit), Restrictions.eq("type", ReferenceType.Section)),

                        Restrictions.idEq(publishedUnit.getId())

                        )

                );

                // and remove the empty option

                getView().getNomReferenceCombobox().getSelect().setNullSelectionAllowed(false);

                // new Reference only a sub sections of the publishedUnit

                newReferenceInstantiator = new BeanInstantiator<Reference>() {

                    @Override

                    public Reference createNewBean() {

                        Reference newRef = ReferenceFactory.newSection();

                        newRef.setInReference(publishedUnit);

                        return newRef;

                    }

                };

            }

        }

        return taxonName;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void guaranteePerEntityCRUDPermissions(UUID identifier) {

        if(crud != null){

            newAuthorityCreated = UserHelper.fromSession().createAuthorityForCurrentUser(TaxonName.class, identifier, crud, null);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected void guaranteePerEntityCRUDPermissions(TaxonName bean) {

        if(crud != null){

            newAuthorityCreated = UserHelper.fromSession().createAuthorityForCurrentUser(bean, crud, null);

        }

    }

    @Override

    protected TaxonName handleTransientProperties(TaxonName bean) {

        logger.trace(this._toString() + ".onEditorSaveEvent - handling transient properties");

        List<TaxonName> newBasionymNames = getView().getBasionymComboboxSelect().getValueFromNestedFields();

        Set<TaxonName> oldBasionyms = bean.getBasionyms();

        Set<TaxonName> updateBasionyms = new HashSet<>();

        Set<TaxonName> removeBasionyms = new HashSet<>();

        for(TaxonName newB : newBasionymNames){

            if(!oldBasionyms.contains(newB)){

                updateBasionyms.add(newB);

            }

        }

        for(TaxonName oldB : oldBasionyms){

            if(!newBasionymNames.contains(oldB)){

                removeBasionyms.add(oldB);

            }

        }

        for(TaxonName removeBasionym :removeBasionyms){

            Set<NameRelationship> removeRelations = new HashSet<NameRelationship>();

            for (NameRelationship nameRelation : bean.getRelationsToThisName()){

                if (nameRelation.getType().isBasionymRelation() && nameRelation.getFromName().equals(removeBasionym)){

                    removeRelations.add(nameRelation);

                }

            }

            for (NameRelationship relation : removeRelations){

                bean.removeNameRelationship(relation);

            }

        }

        getRepo().getSession().clear();

        for(TaxonName addBasionymName :updateBasionyms){

            if(addBasionymName != null){

                bean.addBasionym(addBasionymName);

            }

        }

        return bean;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    protected INameService getService() {

        return getRepo().getNameService();

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void onReferenceEditorActionAdd(ReferenceEditorAction event) {

        if(getView() == null || event.getSourceView() != getView() ){

            return;

        }

        referenceEditorPopup = getNavigationManager().showInPopup(ReferencePopupEditor.class, getView());

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

        referenceEditorPopup.withDeleteButton(true);

        referenceEditorPopup.setBeanInstantiator(newReferenceInstantiator);

        referenceEditorPopup.loadInEditor(null);

        if(newReferenceInstantiator != null){

            // this is a bit clumsy, we actually need to inject something like a view configurer

            // which can enable, disable fields

            referenceEditorPopup.getInReferenceCombobox().setEnabled(false);

            referenceEditorPopup.getTypeSelect().setEnabled(false);

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onReferenceEditorActionEdit(ReferenceEditorAction event) {

        if(getView() == null || event.getSourceView() != getView() ){

            return;

        }

        referenceEditorPopup = getNavigationManager().showInPopup(ReferencePopupEditor.class, getView());

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

        referenceEditorPopup.withDeleteButton(true);

        referenceEditorPopup.setBeanInstantiator(newReferenceInstantiator);

        referenceEditorPopup.loadInEditor(event.getEntityUuid());

        if(newReferenceInstantiator != null){

            // this is a bit clumsy, we actually need to inject something like a view configurer

            // which can enable, disable fields

            referenceEditorPopup.getInReferenceCombobox().setEnabled(false);

            referenceEditorPopup.getTypeSelect().setEnabled(false);

        }

    }

    @EventBusListenerMethod

    public void onEntityChangeEvent(EntityChangeEvent<?> event){

        if(event.getSourceView() == referenceEditorPopup){

            if(event.isCreateOrModifiedType()){

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

                getView().getNomReferenceCombobox().reload(); // refreshSelectedValue(modifiedReference);

                if(event.getType().equals(EntityChangeEvent.Type.CREATED)){

                    getView().getNomReferenceCombobox().setValue((Reference) event.getEntity());

                }

                getView().getCombinationAuthorshipField().discard(); //refresh from the datasource

                getView().updateAuthorshipFields();

            }

            referenceEditorPopup = null;

        }

        if(event.getSourceView()  == basionymNamePopup){

            if(event.isCreateOrModifiedType()){

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

                ((ReloadableSelect)basionymSourceField).reload();

                getView().getBasionymAuthorshipField().discard(); //refresh from the datasource

                getView().getExBasionymAuthorshipField().discard(); //refresh from the datasource

                getView().updateAuthorshipFields();

            }

            if(event.isRemovedType()){

                basionymSourceField.setValue(null);

                getView().updateAuthorshipFields();

            }

            basionymNamePopup = null;

            basionymSourceField = null;

        }

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Edit.class)

    public void onTaxonNameEditorActionEdit(TaxonNameEditorAction event) {

        if(getView() == null || event.getSourceView() != getView() ){

            return;

        }

        basionymSourceField = (AbstractField<TaxonName>)event.getSourceComponent();

        basionymNamePopup = getNavigationManager().showInPopup(TaxonNamePopupEditor.class, getView());

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

        basionymNamePopup.withDeleteButton(true);

        getView().getModesActive().stream()

                .filter(

                        m -> !TaxonNamePopupEditorMode.NOMENCLATURALREFERENCE_SECTION_EDITING_ONLY.equals(m))

                .forEach(m -> basionymNamePopup.enableMode(m));

        basionymNamePopup.loadInEditor(event.getEntityUuid());

        basionymNamePopup.getBasionymToggle().setVisible(false);

    }

    @EventBusListenerMethod(filter = EditorActionTypeFilter.Add.class)

    public void oTaxonNameEditorActionAdd(TaxonNameEditorAction event) {

        if(getView() == null || event.getSourceView() != getView() ){

            return;

        }

        basionymSourceField = (AbstractField<TaxonName>)event.getSourceComponent();

        basionymNamePopup = getNavigationManager().showInPopup(TaxonNamePopupEditor.class, getView());

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

        basionymNamePopup.withDeleteButton(true);

        getView().getModesActive().stream()

                .filter(

                        m -> !TaxonNamePopupEditorMode.NOMENCLATURALREFERENCE_SECTION_EDITING_ONLY.equals(m))

                .forEach(m -> basionymNamePopup.enableMode(m));

        basionymNamePopup.loadInEditor(null);

        basionymNamePopup.getBasionymToggle().setVisible(false);

    }

}