/*
    * 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.syncope.client.ui.commons.markup.html.form;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  import org.apache.commons.lang3.tuple.MutablePair;
  import org.apache.commons.lang3.tuple.Pair;
  import org.apache.wicket.Component;
  import org.apache.wicket.ajax.AjaxRequestTarget;
  import org.apache.wicket.markup.html.basic.Label;
  import org.apache.wicket.markup.html.panel.Panel;
  import org.apache.wicket.model.IModel;
  import org.apache.wicket.model.Model;
  import org.apache.wicket.model.ResourceModel;
  import org.wicketstuff.egrid.column.AbstractEditablePropertyColumn;
  import org.wicketstuff.egrid.column.RequiredEditableTextFieldColumn;
  import org.wicketstuff.egrid.provider.EditableListDataProvider;
  
  public class AjaxGridFieldPanel<K, V, S> extends Panel {
  
      private static final long serialVersionUID = 7589570522964677729L;
  
      public AjaxGridFieldPanel(final String id, final String name, final IModel<Map<K, V>> model) {
          super(id, model);
  
          add(new Label(AbstractFieldPanel.LABEL, new ResourceModel(name, name)));
  
          add(new AjaxGrid<>(
                  "grid",
                  getColumns(),
                  new EditableListDataProvider<>(model.getObject().entrySet().stream().
                          map(entry -> MutablePair.of(entry.getKey(), entry.getValue())).
                          collect(Collectors.toList())), 10) {
  
              private static final long serialVersionUID = -1315456128897492459L;
  
              @Override
              protected boolean displayHeader() {
                  return false;
              }
  
              @Override
              protected void onAdd(final AjaxRequestTarget target, final Pair<K, V> newRow) {
                  model.getObject().put(newRow.getLeft(), newRow.getRight());
              }
  
              @Override
              protected void onDelete(final AjaxRequestTarget target, final IModel<Pair<K, V>> rowModel) {
                  model.getObject().remove(rowModel.getObject().getLeft());
              }
  
              @Override
              protected void onSave(final AjaxRequestTarget target, final IModel<Pair<K, V>> rowModel) {
                  model.getObject().put(rowModel.getObject().getLeft(), rowModel.getObject().getRight());
              }
          });
      }
  
      public AjaxGridFieldPanel<K, V, S> hideLabel() {
          Component label = get(AbstractFieldPanel.LABEL);
          if (label != null) {
              label.setVisible(false);
          }
  
          return this;
      }
  
      private List<AbstractEditablePropertyColumn<Pair<K, V>, S>> getColumns() {
          List<AbstractEditablePropertyColumn<Pair<K, V>, S>> columns = new ArrayList<>();
          columns.add(new RequiredEditableTextFieldColumn<>(Model.of(), "left"));
          columns.add(new RequiredEditableTextFieldColumn<>(Model.of(), "right"));
          return columns;
      }
  }