WebResource.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2021 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.elephant.web.context;
 
import java.io.File;
import java.util.Date;
import java.util.HashSet;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.TreeMap;
import org.turro.string.ObjectString;
 
public class WebResource {
  
  private File resource;
 
  // Modified
  private final TreeMap<String, File> editables = new TreeMap<>();
  
  public void setResource(File file) {
    this.resource = file;
  }
 
  public File getResource() {
    return resource;
  }
  
  public void addEditable(String modified, File file) {
    editables.put(modified, file);
  }
 
  public Map<String, File> getEditables() {
    return editables;
  }
  
  public File getCurrentEditable() {
    return editables.lastEntry().getValue();
  }
  
  public void addFile(WebResourceParts wrp, File file) {
    if(!wrp.isEmpty()) {
      if(wrp.isResource()) {
        setResource(file);
      } else {
        addEditable(wrp.getModified(), file);
      }
    }
  }
  
  /* Utils */
  
  public static WebResourceParts decompose(File file) {
    return new WebResourceParts(file);
  }
  
  private static final Long MAX_DIFFERENCE = (1000L * 60L * 60L * 3 /* hours */);
  
  public void cleanEditables(String current) {
    Set<String> toRemove = new HashSet<>();
    Long previous = ((Date) ObjectString.parseString(current,                 
                ObjectString.COMPRESSED_DATE_PATTERN, Date.class, false)).getTime();
    for(String modified : editables.descendingKeySet()) {
      long modification = ((Date) ObjectString.parseString(modified,                 
                ObjectString.COMPRESSED_DATE_PATTERN, Date.class, false)).getTime();
      if(previous != null) {
        if(previous - modification < MAX_DIFFERENCE) {
          toRemove.add(modified);
        }
      }
      previous = modification;
    }
    toRemove.forEach(e -> {
      editables.get(e).delete();
      editables.remove(e);
    });
  }
  
  /* Object */
  
  @Override
  public int hashCode() {
    int hash = 5;
    hash = 37 * hash + Objects.hashCode(this.resource);
    return hash;
  }
 
  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    final WebResource other = (WebResource) obj;
    return Objects.equals(this.resource, other.resource);
  }
 
}