OffersVM.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.dossier.offer;
 
import java.util.Collections;
import java.util.Date;
import java.util.List;
import org.turro.action.Contacts;
import org.turro.action.MailSenders;
import org.turro.action.PushSenders;
import org.turro.auth.Authentication;
import org.turro.dossier.db.DossierPU;
import org.turro.dossier.entity.Dossier;
import org.turro.dossier.entity.DossierOffer;
import org.turro.elephant.util.Messages;
import org.turro.entities.Entities;
import org.turro.entities.IElephantEntity;
import org.turro.file.Document;
import org.turro.file.FileWrapper;
import org.turro.file.Folder;
import org.turro.i18n.I_;
import org.turro.jpa.Dao;
import org.turro.plugin.contacts.IContact;
import org.turro.sql.SqlClause;
import org.turro.string.Strings;
import org.turro.upload.Medias;
import org.turro.visual.DossierVisualElement;
import org.turro.visual.DossierVisualElements;
import org.turro.zkoss.dialog.DialogField;
import org.turro.zkoss.dialog.Dialogs;
import org.zkoss.bind.BindUtils;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.ExecutionArgParam;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.util.media.Media;
import org.zkoss.zk.ui.Executions;
 
public class OffersVM {
 
  private Dossier dossier;
  private DossierVisualElement visual;
  private IContact contact;
  private List<DossierOffer> model;
 
  @Init
  public void init(@ExecutionArgParam("dossierId") String dossierId) {
    if(Strings.isBlank(dossierId)) {
      dossierId = Executions.getCurrent().getParameter("dossierId");
    }
    this.dossier = getDao().find(Dossier.class, Long.valueOf(dossierId));
    this.visual = DossierVisualElements.load().getElement("Offers");
  }
 
  @NotifyChange("model")
  @Command("upload")
  public void upload(@BindingParam("offer") DossierOffer offer, @BindingParam("medias") Media medias[]) {
    if(canUpload(offer)) {
      Folder folder = offer.getFolder();
      for(Media media : medias) {
        Medias.toFolder(media, folder);
      }
      IElephantEntity iee = Entities.getController(dossier);
      PushSenders.getPool()
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .send(I_.get("Offer"), I_.get("New documents"), iee.getEntityUrl());
      MailSenders.getPool().setRoot("/offers")
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .silentSendTemplate(iee, "newdocs", I_.get("New documents"));
    }
  }
  
  @Command("download")
  public void download(@BindingParam("document") Document document) {
    new FileWrapper(document.document()).download();
  }
  
  @Command("deleteDoc")
  public void deleteDoc(@BindingParam("document") Document document) {
    Messages.confirmDeletion().add(document.name()).show(() -> {
      document.delete();
      BindUtils.postNotifyChange(null, null, OffersVM.this, "model");
    });
  }
  
  @Command("delete")
  public void delete(@BindingParam("offer") DossierOffer offer) {
    Messages.confirmDeletion().add(offer.getDescription()).show(() -> {
      offer.getFolder().remove();
      getDao().deleteObject(offer);
      BindUtils.postNotifyChange(null, null, OffersVM.this, "model");
    });
  }
  
  @Command("create")
  public void create() {
    if(!canCreate) return;
    Dialogs.title(I_.get("New offer"))
           .width("800px")
           .height("220px")
           .addField(DialogField.field("Description").lines(5).maxLength(1000))
           .onOk((dialogs) -> {
             String description = dialogs.getValue("Description", String.class);
             if(!Strings.isBlank(description)) {
               DossierOffer offer = new DossierOffer();
               offer.setDossier(dossier);
               offer.setCreation(new Date());
               offer.setDescription(description);
               offer.setBidderId(contact.getId());
               offer = getDao().saveEntity(offer);
               BindUtils.postNotifyChange(null, null, OffersVM.this, "model");
               IElephantEntity iee = Entities.getController(dossier);
               PushSenders.getPool()
                      .addContact(offer.getDossier().getDefaultResponsible())
                      .addContact(offer.getBidder())
                      .send(I_.get("Offer"), I_.get("New offer"), iee.getEntityUrl());
               MailSenders.getPool().setRoot("/offers")
                      .addContact(offer.getDossier().getDefaultResponsible())
                      .addContact(offer.getBidder())
                      .silentSendTemplate(iee, "new", I_.get("New offer"));
             }
           })
           .emptyCancel()
           .show();
  }
    
  @NotifyChange("model")
  @Command("accept")
  public void accept(@BindingParam("offer") DossierOffer offer) {
    Messages.confirmAcceptation().add(offer.getDescription()).paragraph()
            .add(I_.get("This action will accept the offer and send a notification.")).show(() -> {
      offer.setAccepted(true);
      offer.setDeclined(false);
      getDao().saveObject(offer);
      IElephantEntity iee = Entities.getController(dossier);
      PushSenders.getPool()
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .send(I_.get("Offer"), I_.get("Accepted"), iee.getEntityUrl());
      MailSenders.getPool().setRoot("/offers")
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .silentSendTemplate(iee, "accepted", I_.get("Accepted"));
    });
  }
  
  @NotifyChange("model")
  @Command("decline")
  public void decline(@BindingParam("offer") DossierOffer offer) {
    Messages.confirmProcess().add(offer.getDescription()).paragraph()
            .add(I_.get("This action will decline the offer and send a notification.")).show(() -> {
      offer.setAccepted(false);
      offer.setDeclined(true);
      getDao().saveObject(offer);
      IElephantEntity iee = Entities.getController(dossier);
      PushSenders.getPool()
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .send(I_.get("Offer"), I_.get("Declined"), iee.getEntityUrl());
      MailSenders.getPool().setRoot("/offers")
             .addContact(offer.getDossier().getDefaultResponsible())
             .addContact(offer.getBidder())
             .silentSendTemplate(iee, "declined", I_.get("Declined"));
    });
  }
  
  public List<DossierOffer> getModel() {
    if(prepareValues()) {
      model = SqlClause.select("p")
              .from("DossierOffer p")
              .where().equal("p.dossier", dossier)
              .startIf(!canAll)
              .and().equal("p.bidderId", contact.getId())
              .endIf()
              .dao(getDao())
              .resultList(DossierOffer.class);
      if(!model.isEmpty()) canCreate = false;
      return model;
    }
    return Collections.EMPTY_LIST;
  }
 
  /* Roles */
  
  public boolean canUpload(DossierOffer offer) {
    return canAll || 
            (canAddWorking && !(offer.isAccepted() || offer.isDeclined())) ||
            (canAddFinal && offer.isAccepted());
  }
 
  public boolean canDelete(DossierOffer offer) {
    return canAll || !(offer.isAccepted() || offer.isDeclined());
  }
 
  public boolean canCreate() {
    return canCreate;
  }
 
  public boolean canAccept(DossierOffer offer) {
    return canAll && !(offer.isAccepted() || offer.isDeclined());
  }
 
  private boolean canAll, canCreate, canShow, canAddWorking, canAddFinal;
  
  private boolean prepareValues() {
    contact = Authentication.getIContact();
    if(dossier != null && visual != null && Contacts.isValid(contact)) {
      canAll = contact.isAdmin();
      canCreate = visual.canCreateOffer(dossier, contact);
      canShow = visual.canShowOffer(dossier, contact);
      canAddWorking = visual.canAddWorkingOffer(dossier, contact);
      canAddFinal = visual.canAddFinalOffer(dossier, contact);
      return canAll || canShow || canCreate;
    }
    return false;
  }
    
  /* Dao */
  
  private Dao _dao;
  
  private Dao getDao() {
    if(_dao == null) {
      _dao = new DossierPU();
    }
    return _dao;
  }
 
}