/*
 * IronJacamar, a Java EE Connector Architecture implementation
 * Copyright 2010, Red Hat Inc, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.jca.codegenerator.code;

import org.jboss.jca.codegenerator.ConfigPropType;
import org.jboss.jca.codegenerator.Definition;
import org.jboss.jca.codegenerator.Version;

import java.io.IOException;
import java.io.Writer;
import java.util.List;

/**
 * A ActivationSpec CodeGen.
 * 
 * @author Jeff Zhang
 * @version $Revision: $
 */
public class AsCodeGen extends PropsCodeGen
{

   /**
    * Output class
    * @param def definition
    * @param out Writer
    * @throws IOException ioException
    */
   @Override
   public void writeClassBody(Definition def, Writer out) throws IOException
   {
      if (def.isUseAnnotation())
      {
         if (!def.isDefaultPackageInbound())
         {
            out.write("@Activation(messageListeners = { " + def.getMlClass() + ".class })");
         }
         else
         {
            out.write("@Activation(messageListeners = { " + def.getRaPackage() + 
                  ".inflow." + def.getMlClass() + ".class })");
         }
         writeEol(out);
      }
      out.write("public class " + getClassName(def) + " implements ActivationSpec");
      writeLeftCurlyBracket(out, 0);
      writeEol(out);

      int indent = 1;
      writeIndent(out, indent);
      out.write("/** The logger */");
      writeEol(out);
      writeIndent(out, indent);
      out.write("private static Logger log = Logger.getLogger(" + getSelfClassName(def) + ");");
      writeEol(out);
      writeEol(out);
      
      writeIndent(out, indent);
      out.write("/** The resource adapter */");
      writeEol(out);
      writeIndent(out, indent);
      out.write("private ResourceAdapter ra;");
      writeEol(out);
      writeEol(out);

      writeConfigPropsDeclare(def, out, indent);
      
      writeDefaultConstructor(def, out, indent);
      
      writeConfigProps(def, out, indent);
      
      writeValidate(def, out, indent);
      writeResourceAdapter(def, out, indent);
      
      writeRightCurlyBracket(out, 0);
   }
   
   @Override
   void writeDefaultConstructor(Definition def, Writer out, int indent) throws IOException
   {
      if (!def.getVersion().equals(Version.V_15.getLocalName()))
      {
         super.writeDefaultConstructor(def, out, indent);
         return;
      }
      // only for JCA 1.5
      writeIndent(out, indent);
      out.write("/**");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * Default constructor");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" */");
      writeEol(out);
      
      //constructor
      writeIndent(out, indent);
      out.write("public " + getClassName(def) + "()");
      writeLeftCurlyBracket(out, indent);
      writeConfigPropsDefaults(def, out, indent);
      writeRightCurlyBracket(out, indent);
      writeEol(out);
      
   }

   private void writeConfigPropsDefaults(Definition def, Writer out, int indent) throws IOException
   {
      List<ConfigPropType> configPropTypes = def.getAsConfigProps();
      if (configPropTypes == null)
      {
         return;
      }
      for (ConfigPropType configPropType: configPropTypes)
      {
         String name = configPropType.getName();
         String type = configPropType.getType();
         String value = configPropType.getValue();
         if (value != null && value.length() > 0)
         {
            writeIndent(out, indent);
            writeIndent(out, indent);
            if (type.equals("Character"))
            {
               out.write("this." + name + " = " + type + ".valueOf(\'" + value + "\');");
            }
            else if (type.equals("String"))
            {
               out.write("this." + name + " = \"" + value + "\";");
            }
            else
            {
               out.write("this." + name + " = " + type + ".valueOf(\"" + value + "\");");
            }
            writeEol(out);
         }
      }
   }
   
   /**
    * Output class import
    * @param def definition
    * @param out Writer
    * @throws IOException ioException
    */
   @Override
   public void writeImport(Definition def, Writer out) throws IOException
   {
      out.write("package " + def.getRaPackage() + ".inflow;");
      writeEol(out);
      writeEol(out);
      importLogging(def, out);
      
      if (def.isUseAnnotation())
      {
         out.write("import javax.resource.spi.Activation;");
         writeEol(out);
      }
      out.write("import javax.resource.spi.ActivationSpec;");
      writeEol(out);
      if (def.isUseAnnotation())
      {
         importConfigProperty(def, out);
      }
      out.write("import javax.resource.spi.InvalidPropertyException;");
      writeEol(out);
      out.write("import javax.resource.spi.ResourceAdapter;");
      writeEol(out);
      
      if (def.isUseAnnotation())
      {
         for (int i = 0; i < getConfigProps(def).size(); i++)
         {
            if (getConfigProps(def).get(i).isRequired())
            {
               out.write("import javax.validation.constraints.NotNull;");
               break;
            }
         }
      }
      writeEol(out);
   }
   
   /**
    * get this class name
    * @param def definition
    * @return String class name
    */
   @Override
   public String getClassName(Definition def)
   {
      return def.getAsClass();
   }
   
   /**
    * get list of ConfigPropType
    * @param def definition
    * @return List<ConfigPropType> List of ConfigPropType
    */
   @Override
   public List<ConfigPropType> getConfigProps(Definition def)
   {
      return def.getAsConfigProps();
   }
   
   /**
    * Output validate method
    * @param def definition
    * @param out Writer
    * @param indent space number
    * @throws IOException ioException
    */
   private void writeValidate(Definition def, Writer out, int indent) throws IOException
   {
      writeIndent(out, indent);
      out.write("/**");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * This method may be called by a deployment tool to validate the overall");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * activation configuration information provided by the endpoint deployer.");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" *");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * @throws InvalidPropertyException indicates invalid configuration property settings.");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" */");
      writeEol(out);
      
      writeIndent(out, indent);
      out.write("public void validate() throws InvalidPropertyException");
      writeLeftCurlyBracket(out, indent);

      writeLogging(def, out, indent + 1, "trace", "validate");

      writeRightCurlyBracket(out, indent);
      writeEol(out);
   }
   
   /**
    * Output ResourceAdapter method
    * @param def definition
    * @param out Writer
    * @param indent space number
    * @throws IOException ioException
    */
   private void writeResourceAdapter(Definition def, Writer out, int indent) throws IOException
   {      
      writeIndent(out, indent);
      out.write("/**");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * Get the resource adapter");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" *");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * @return The handle");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" */");
      writeEol(out);
      
      writeIndent(out, indent);
      out.write("public ResourceAdapter getResourceAdapter()");
      writeLeftCurlyBracket(out, indent);

      writeLogging(def, out, indent + 1, "trace", "getResourceAdapter");
      
      writeIndent(out, indent + 1);
      out.write("return ra;");
      writeRightCurlyBracket(out, indent);
      writeEol(out);
      
      writeIndent(out, indent);
      out.write("/**");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * Set the resource adapter");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" *");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" * @param ra The handle");
      writeEol(out);
      writeIndent(out, indent);
      out.write(" */");
      writeEol(out);
      
      writeIndent(out, indent);
      out.write("public void setResourceAdapter(ResourceAdapter ra)");
      writeLeftCurlyBracket(out, indent);

      writeLogging(def, out, indent + 1, "trace", "setResourceAdapter", "ra");
      
      writeIndent(out, indent + 1);
      out.write("this.ra = ra;");
      writeRightCurlyBracket(out, indent);
      writeEol(out);
   }
}
