/*
    * 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.myfaces.tobago.example.demo;
  
  import org.apache.myfaces.tobago.component.UISheet;
  import org.apache.myfaces.tobago.event.SortActionEvent;
  import org.apache.myfaces.tobago.model.SheetState;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.annotation.PostConstruct;
  import javax.enterprise.context.SessionScoped;
  import javax.faces.context.FacesContext;
  import javax.faces.event.ActionEvent;
  import javax.inject.Inject;
  import javax.inject.Named;
  import java.io.Serializable;
  import java.lang.invoke.MethodHandles;
  import java.util.Collections;
  import java.util.Comparator;
  import java.util.List;
  import java.util.stream.Collectors;
  
  @SessionScoped
  @Named
  public class SheetSortingController implements Serializable {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    @Inject
    private AstroData astroData;
  
    private List<SolarObject> solarList1;
    private List<SolarObject> solarList2;
  
    @PostConstruct
    private void init() {
      solarList1 = astroData.findAll().collect(Collectors.toList());
      solarList2 = astroData.findAll().collect(Collectors.toList());
    }
  
    public void sheetSorter(final ActionEvent event) {
      if (event instanceof SortActionEvent) {
        final SortActionEvent sortEvent = (SortActionEvent) event;
        final UISheet sheet = (UISheet) sortEvent.getComponent();
        final SheetState sheetState = sheet.getSheetState(FacesContext.getCurrentInstance());
        final List<SolarObject> list = (List<SolarObject>) sheet.getValue();
        sheetSorter(sheetState, list);
      }
    }
  
    private void sheetSorter(final SheetState sheetState, final List<SolarObject> list) {
      final String columnId = sheetState.getSortedColumnId();
  
      LOG.info("Sorting column '{}'", columnId);
  
      if ("customColumnName".equals(columnId)) {
        list.sort(Comparator.comparing(SolarObject::getName, String.CASE_INSENSITIVE_ORDER));
      } else if ("customColumnPeriod".equals(columnId)) {
        list.sort(Comparator.comparing(d -> Math.abs(d.getPeriod())));
      } else if ("customColumnYear".equals(columnId)) {
        list.sort(Comparator.comparing(d -> d.getDiscoverYear() != null ? d.getDiscoverYear() : 0));
      }
  
      if (!sheetState.isAscending()) {
        Collections.reverse(list);
      }
    }
  
    public List<SolarObject> getSolarList1() {
      return solarList1;
    }
  
    public void setSolarList1(List<SolarObject> solarList1) {
      this.solarList1 = solarList1;
    }
  
    public List<SolarObject> getSolarList2() {
      return solarList2;
    }
  
    public void setSolarList2(List<SolarObject> solarList2) {
     this.solarList2 = solarList2;
   }
 }