/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2014 wcm.io
    * %%
    * Licensed 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.
   * #L%
   */
  package io.wcm.handler.commons.editcontext;
  
  import java.util.Collections;
  import java.util.Map;
  
  import org.apache.sling.commons.json.JSONException;
  import org.apache.sling.commons.json.io.JSONWriter;
  import org.jetbrains.annotations.NotNull;
  import org.osgi.annotation.versioning.ProviderType;
  
  import com.day.cq.wcm.api.components.DropTarget;
  
  /**
   * {@link DropTarget} implementation.
   */
  @ProviderType
  /*
   * This depends on the (deprecated) Sling Commons JSON API, which is tied into AEM public API:
   * https://developer.adobe.com/experience-manager/reference-materials/6-5/javadoc/com/day/cq/commons/JSONItem.html
   */
  @SuppressWarnings("deprecation")
  public final class DropTargetImpl implements DropTarget {
  
    private final String name;
    private final String id;
    private final String propertyName;
    private String[] groups = new String[0];
    private String[] accept = new String[] {
        "*"
    };
    private Map<String, String> parameters = Collections.emptyMap();
  
    /**
     * @param name drop target name
     * @param propertyName property name
     */
    public DropTargetImpl(@NotNull String name, @NotNull String propertyName) {
      this.name = name;
      this.id = CSS_CLASS_PREFIX + this.name;
      this.propertyName = propertyName;
    }
  
    /**
     * Returns the name of this drop target
     * @return drop target name
     */
    @Override
    public String getName() {
      return this.name;
    }
  
    /**
     * Returns the id for the drop target element. this is currently the same
     * as the name, prefixed with the {@link #CSS_CLASS_PREFIX}
     * @return drop target id
     */
    @Override
    public String getId() {
      return this.id;
    }
  
    /**
     * Returns the property name to use for this drop target.
     * @return the property name.
     */
    @Override
    public String getPropertyName() {
      return this.propertyName;
    }
  
    /**
     * Returns the DD groups for this target
     * @return the DD groups.
     */
    @Override
    public String[] getGroups() {
      return this.groups;
    }
  
    /**
    * @param values the DD groups.
    * @return this
    */
   public DropTargetImpl setGroups(String @NotNull [] values) {
     this.groups = values;
     return this;
   }
 
   /**
    * Returns the mime-type accept patterns
    * @return the accept patterns
    */
   @Override
   public String[] getAccept() {
     return this.accept;
   }
 
   /**
    * @param values the accept patterns
    * @return this
    */
   public DropTargetImpl setAccept(String @NotNull [] values) {
     this.accept = values;
     return this;
   }
 
   /**
    * Returns a map of additional parameters to be set on the target node
    * @return a map of additional parameters.
    */
   @Override
   public Map<String, String> getParameters() {
     return this.parameters;
   }
 
   /**
    * @param value a map of additional parameters.
    * @return this
    */
   public DropTargetImpl setParameters(@NotNull Map<String, String> value) {
     this.parameters = value;
     return this;
   }
 
   @Override
   public void write(JSONWriter out) throws JSONException {
     out.object();
     out.key("id").value(this.name);
     out.key("name").value(this.propertyName);
     out.key("accept").array();
     for (String a : this.accept) {
       out.value(a);
     }
     out.endArray();
     out.key("groups").array();
     for (String group : this.groups) {
       out.value(group);
     }
     out.endArray();
     if (!this.parameters.isEmpty()) {
       out.key("params");
       out.object();
       for (Map.Entry<String, String> e : this.parameters.entrySet()) {
         out.key(e.getKey()).value(e.getValue());
       }
       out.endObject();
     }
     out.endObject();
   }
 
 }