AbstractDirect.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 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.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.json.Json;
import javax.json.JsonArrayBuilder;
import javax.json.JsonObjectBuilder;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.collections.parser.ParserException;
import org.turro.string.Strings;
import org.apache.commons.io.IOUtils;
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.elephant.security.IUser;
import org.turro.plugin.contacts.IContact;
 
public abstract class AbstractDirect implements IDirectContent {
 
  private boolean redirectToCurrent = false;
  
  public AbstractDirect() {
  }
 
  public boolean isRedirectToCurrent() {
    return redirectToCurrent;
  }
 
  public void setRedirectToCurrent(boolean redirectToCurrent) {
    this.redirectToCurrent = redirectToCurrent;
  }
 
  public String createFormAction() {
    return DirectContents.createRelativeURL(getIdentifier());
  }
  
  public String createPOST(String values) {
    return "$.post('" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + getIdentifier() + "'," +
           "{ exrino : '" + Actions.createRightNowParameter(values) + "' })";
  }
  
  public String getAjaxSubmitUrl(String containerId) {
    return "$.post('" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + getIdentifier() + "'," +
           "$('#form_" + containerId + "').serialize())" +
           ".done(function(data) { $('#" + containerId + "').html(data); });" +
           "return false;";
  }
 
  public String getAjaxUrl(String containerId, String values) {
    try {
      return getAjaxUrl(containerId, new KeyValueMap(values));
    } catch (ParserException ex) {
      Logger.getLogger(AbstractDirectContentCtrl.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(values), ex);
    }
    return "";
  }
  
  public String getAjaxUrl(String containerId, KeyValueMap values) {
    values.put("domid", containerId);
    return "$.post('" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + getIdentifier() + "'," +
           "{ exrino : '" + Actions.createRightNowParameter(values) + "' })" +
           ".done(function(data) { $('#" + containerId + "').html(data); });";
  }
  
  public String getAjaxEvalUrl(KeyValueMap values) {
    return "$.post('" + ElephantContext.getRootWebPath() + DirectContents.DIRECT_CONTENT_PATH + getIdentifier() + "'," +
           "{ exrino : '" + Actions.createRightNowParameter(values) + "' })" +
           ".done(function(data) { eval(data); });";
  }
 
  public String createRightNowURL(String values) {
    try {
      return createRightNowURL(new KeyValueMap(values));
    } catch (ParserException ex) {
      Logger.getLogger(AbstractDirect.class.getName()).log(Level.SEVERE, null, ex);
    }
    return null;
  }
  
  public String createRightNowURL(KeyValueMap values) {
    return ElephantContext.getRootWebPath() +
            DirectContents.DIRECT_CONTENT_PATH + getIdentifier() +
            "?" + Actions.createRightNowAction(values);
  }
  
  public String createLinkTo(String link, KeyValueMap values) {
    return ElephantContext.getRootWebPath() +
            link + "?" + Actions.createAction(values);
  }
  
  public String createURL() {
    return ElephantContext.getRootWebPath() +
           DirectContents.DIRECT_CONTENT_PATH + getIdentifier();
  }
  
  public String createURL(IConstructor constructor, String values) {
    return createURL(constructor, values, 7, false);
  }
  
  public String createURL(IConstructor constructor, String values, int daysValid) {
    return createURL(constructor, values, daysValid, false);    
  }
  
  public String createURL(IConstructor constructor, String values, int daysValid, boolean withDomain) {
    return createURL(constructor, (IContact) constructor.getUser(), values, daysValid, withDomain);
  }
  
  public String createURL(IConstructor constructor, IContact recipe, String values, int daysValid, boolean withDomain) {
    try {
      return createURL(constructor, recipe, new KeyValueMap(values), daysValid, withDomain);
    } catch (ParserException ex) {
      Logger.getLogger(AbstractDirect.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
    }
    return null;
  }
  
  public String createURL(IConstructor constructor, IContact recipe, KeyValueMap values, int daysValid, boolean withDomain) {
    values.put(Actions.USER_PAR, recipe.getConnector(IUser.CONNECTOR_EMAIL));
    if(redirectToCurrent) values.put(Actions.REDIR_PAR, getRedirContext(constructor, withDomain));
    return (withDomain ? ElephantContext.getServerBase("http") : "") +
            ElephantContext.getRootWebPath() +
            DirectContents.DIRECT_CONTENT_PATH + getIdentifier() +
            "?" + Actions.createAction(values, daysValid, false);
  }
  
  protected String getRedirContext(IConstructor constructor, boolean withDomain) {
    if(withDomain) {
      return ElephantContext.getServerBase("http") + constructor.getCurrentContext().getWebPath();
    } else {
      return constructor.getCurrentContext().getPath();
    }
  }
  
  /* JSON */
  
  protected String generateJson(String rootElement, String itemElement, List results) {
    JsonObjectBuilder builder = Json.createObjectBuilder();
    JsonArrayBuilder array = Json.createArrayBuilder();
    results.forEach(i -> array.add(createJsonItem(itemElement, i)));
    builder.add(rootElement, array);
    return builder.build().toString();
  }
  
  protected JsonObjectBuilder createJsonItem(String itemElement, Object item) {
    if(item instanceof String) {
      return Json.createObjectBuilder().add(itemElement, (String) item);
    } else if(item instanceof Double) {
      return Json.createObjectBuilder().add(itemElement, (Double) item);
    } else if(item instanceof Integer) {
      return Json.createObjectBuilder().add(itemElement, (Integer) item);
    } else if(item instanceof Boolean) {
      return Json.createObjectBuilder().add(itemElement, (Boolean) item);
    } else {
      return Json.createObjectBuilder().add(itemElement, item.toString());
    }
  }
  
  protected void writeJsonResponse(HttpServletResponse response, String json) {
    try {
      response.setContentType("application/json");
      //response.setCharacterEncoding(ElephantContext.getEncoding());
      response.getWriter().write(json);
    } catch (IOException ex) {
      Logger.getLogger(AbstractDirectQuery.class.getName()).log(Level.SEVERE, null, ex);
    }
  }
  
  /* IDirectContent */
 
  @Override
  public boolean itsMe(String id) {
    return getIdentifier().equals(id);
  }
 
  @Override
  public boolean myTurn(HttpServletRequest request) {
    return DirectContents.isYourTurn(request, getIdentifier());
  }
 
  @Override
  public void execute(ServletContext context, HttpServletRequest request, HttpServletResponse response) {
    execute(ElephantContext.getConstructor(request, response));
  }  
 
  public void execute(IConstructor constructor) {
    KeyValueMap map = Actions.isRightNowAction(constructor) ? 
            Actions.getRightNowAction(constructor) :
            Actions.getAction(constructor);
    if(map == null && "POST".equals(constructor.getRequest().getMethod())) {
      map = new KeyValueMap(Collections.EMPTY_MAP);
      if("application/json".equals(constructor.getRequest().getHeader("Content-Type"))) {
        try {
          map.put("json", IOUtils.toString(constructor.getRequest().getReader()));
        } catch (IOException ex) {
          Logger.getLogger(AbstractDirect.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
        }
      } else {
        for(String key : constructor.getRequest().getParameterMap().keySet()) {
          map.put(key, constructor.getRequest().getParameter(key));
        }
      }
    }
    if(map != null) {
      doExecute(constructor, map);
      String redirect = map.get(Actions.REDIR_PAR);
      if(!Strings.isBlank(redirect)) {
        try {
          constructor.redirect(redirect);
        } catch (IOException ex) {
          Logger.getLogger(AbstractDirect.class.getName()).log(Level.SEVERE, ElephantContext.logMsg(null), ex);
        }
      }
    }
  }
  
  protected abstract String getIdentifier();
  protected abstract void doExecute(IConstructor constructor, KeyValueMap map);
  
}