DirectContents.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2015 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.direct;
 
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.string.Strings;
import org.turro.action.Actions;
import org.turro.collections.KeyValueMap;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.context.IConstructor;
import org.turro.http.URLUtil;
import org.turro.reflection.Instances;
 
public class DirectContents {
 
  public static final String 
          DIRECT_CONTENT_PATH = "/_reqxdc_/";
  
  public static String getIdentifier(Class<? extends IDirectContent> control) {
    return control.getAnnotation(DirectContent.class).identifier();
  }
  
  public static String createURL(String server, String id) {
    String url = URLUtil.checkAppServer(server, ElephantContext.getUseSSL());
    if(!Strings.isBlank(url)) {
      return url + DIRECT_CONTENT_PATH + id;
    }
    return null;
  }
 
  public static String createRelativeURL(String id) {
    return ElephantContext.getRootWebPath() + DIRECT_CONTENT_PATH + id;
  }
 
  public static boolean isDirectContent(HttpServletRequest request) {
    return request.getServletPath().startsWith(DIRECT_CONTENT_PATH);
  }
  
  public static boolean getContent(ServletContext context, HttpServletRequest request, HttpServletResponse response) {
    return executeDirectContents(context, request, response);
  }
 
  public static boolean isYourTurn(HttpServletRequest request, String path) {
    return request.getServletPath().startsWith(DIRECT_CONTENT_PATH + path);
  }
  
  /* URL Helpers */
  
  public static String doCreatePOST(String id, String values) {
    IDirectContent dc = DirectContents.getDirectContent(id);
    if(dc != null) {
      return "$.post(\"" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + id + "\"," +
             "{ exrino : \"" + Actions.createRightNowParameter(values) + "\" })";
    }
    return null;
  }
  
  public static String doCreatePOST(String id, String domId, String values) {
    IDirectContent dc = DirectContents.getDirectContent(id);
    if(dc != null) {
      return "$.post(\"" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + id + "\"," +
             "{ exrino : \"" + Actions.createRightNowParameter(values) + "\", domid: \"" + domId + "\" })" +
             ".done(function(data) { $(\"#" + domId + "\").html(data); });";
    }
    return null;
  }
  
  public static String doCreateURL(String id, String values) {
    IDirectContent dc = DirectContents.getDirectContent(id);
    if(dc != null) {
      String exrino = Actions.createRightNowAction(values);
      return ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + id +
              "?" + exrino;
    }
    return null;
  }
  
  public static String doCreateParameter(String id, String parameter, Map<String, String> values) {
    IDirectContent dc = DirectContents.getDirectContent(id);
    if(dc != null) {
      try {
        return ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + id +
                "?" + parameter + "=" + Actions.createParameter(values);
      } catch (Exception ex) {
        Logger.getLogger(DirectContents.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
      }
    }
    return null;
  }
  
  public static KeyValueMap getParameters(HttpServletRequest request, HttpServletResponse response) {
    IConstructor constructor = ElephantContext.getConstructor(request, response);
    return Actions.getRightNowAction(constructor);
  }
  
  /* Direct contents */
  
  public static synchronized boolean executeDirectContents(ServletContext context, HttpServletRequest request, HttpServletResponse response) {
    for(IDirectContent iDirect : Instances.cached().byAnnotation(DirectContent.class, IDirectContent.class)) {
      if(iDirect.myTurn(request)) {
        iDirect.execute(context, request, response);
        return true;
      }
    }
    return false;
  }
 
  public static IDirectContent getDirectContent(String id) {
    for(IDirectContent iDirect : Instances.cached().byAnnotation(DirectContent.class, IDirectContent.class)) {
      if(iDirect.itsMe(id)) {
        return iDirect;
      }
    }
    return null;
  }
 
  private DirectContents() {
  }
 
}