Scripting.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.script;
 
import java.io.IOException;
import org.turro.action.Contacts;
import org.turro.elephant.context.Application;
import org.turro.elephant.context.ElephantContext;
import org.turro.entities.Entities;
import org.turro.entities.IElephantEntity;
import org.turro.file.Document;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.Instances;
 
public class Scripting {
 
  public static boolean eval(String value) {
    return evalFor((IContact) Application.getUser(), null, value);
  }
  
  public static boolean eval(IContact contact, String value) {
    return evalFor(contact, null, value);
  }
  
  public static boolean evalFor(Object entity, String value) {
    return evalFor((IContact) Application.getUser(), entity, value);
  }
  
  public static boolean evalFor(IContact contact, Object entity, String value) {
    return evalFor(contact, Entities.getController(entity), value);
  }
  
  public static boolean evalFor(IElephantEntity iee, String value) {
    return evalFor((IContact) Application.getUser(), iee, value);
  }
  
  public static boolean evalFor(IContact contact, IElephantEntity iee, String value) {
    if(Contacts.isValid(contact)) {
      Script script = iee == null ? null : iee.getActorScript();
      if(script == null) {
        script = instance();
      }
      if(script != null) {
        script.addVariable("user", contact);
        return script.evalToBoolean(Scripting.realScript(value));
      }
    }
    return false;
  }
 
  /* Factory */
  
  public static final String SCRIPT_FOLDER = "/WEB-INF/elephant/scripts";
  
  public static String realScript(String script) {
    if(script.startsWith("file:")) {
      return Scripting.scriptContent(script.substring(5));
    } else {
      return script;
    }
  }
  
  public static String scriptContent(String scriptName) {
    try {
      String file = ElephantContext.getRealPath(SCRIPT_FOLDER + "/" + scriptName);
      return Document.from(file).content();
    } catch (IOException ex) {
      return null;
    }
  }
  
  public static Script instance() {
    Script script = new Script();
    script.addVariable("pfunc", new ProfileFunctions());
    Instances.cached().byAnnotation(ScriptingFunction.class, IScriptingFunction.class).forEach((iScript) -> {
      iScript.addFunctions(script);
    });
    return script;
  }
  
}