DeliverablesVM.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.deliverables.model;
 
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.turro.string.Strings;
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.security.ConceptPermission;
import org.turro.upload.Medias;
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 DeliverablesVM {
  
  private IElephantEntity iee;
  private boolean canView, canCreate;
 
  @Init
  public void init(@ExecutionArgParam("entityPath") String entityPath) {
    if(Strings.isBlank(entityPath)) {
      entityPath = Executions.getCurrent().getParameter("entityPath");
    }
    if(!Strings.isBlank(entityPath)) {
      iee = Entities.getController(entityPath);
    } else {
      iee = Entities.emptyController();
    }
    prepareValues();
  }
 
  public IElephantEntity getIee() {
    return iee;
  }
    
  public boolean isCanView() {
    return canView;
  }
 
  public boolean isCanCreate() {
    return canCreate;
  }
 
  @NotifyChange("model")
  @Command("upload")
  public void upload(@BindingParam("medias") Media medias[]) {
    Folder folder = iee.getDeliverables();
    if(folder != null) {
      for(Media media : medias) {
        Medias.toFolder(media, folder);
      }
    }
  }
  
  @Command("download")
  public void download(@BindingParam("document") Document document) {
    new FileWrapper(document.document()).download();
  }
  
  @Command("delete")
  public void deleteDoc(@BindingParam("document") Document document) {
    Messages.confirmDeletion().add(document.name()).show(() -> {
      document.delete();
      BindUtils.postNotifyChange(null, null, DeliverablesVM.this, "model");
    });
  }
  
  public List<Document> getModel() {
    try {
      Folder folder = iee.getDeliverables();
      if(folder != null && folder.exists()) return folder.documents();
    } catch (IOException ex) {
      Logger.getLogger(DeliverablesVM.class.getName()).log(Level.SEVERE, null, ex);
    }
    return Collections.EMPTY_LIST;
  }
 
  private void prepareValues() {
    Optional.ofNullable(iee.getConceptPermission(ConceptPermission.DELIVERABLES))
            .ifPresentOrElse(permission -> {
              canCreate = permission.canAct();
              canView = permission.canShow();
            }, () -> {
              canCreate = false;
              canView = false;
            });
  }
  
}