/*
 * Copyright 2003,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.pluto.internal.impl;

import org.apache.pluto.internal.InternalPortletConfig;
import org.apache.pluto.descriptors.common.InitParamDD;
import org.apache.pluto.descriptors.portlet.PortletDD;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.portlet.PortletConfig;
import javax.portlet.PortletContext;
import javax.servlet.ServletConfig;
import java.util.*;

public class PortletConfigImpl implements PortletConfig, InternalPortletConfig {

    private static final Log LOG = LogFactory.getLog(PortletConfigImpl.class);

    /**
     * The servlet config for which we exist.
     */
    private ServletConfig servletConfig;

    /**
     * The Portlet Application Context within which we exist.
     */
    private PortletContext portletContext;

    /**
     * The portlet descriptor.
     */
    protected PortletDD portletDD;

    private ResourceBundleFactory bundles;

    public PortletConfigImpl(ServletConfig servletConfig,
                             PortletContext portletContext,
                             PortletDD portletDD) {
        this.servletConfig = servletConfig;
        this.portletContext = portletContext;
        this.portletDD = portletDD;
    }

    public String getPortletName() {
        return portletDD.getPortletName();
    }

    public PortletContext getPortletContext() {
        return portletContext;
    }

    public ResourceBundle getResourceBundle(Locale locale) {
        if(LOG.isDebugEnabled()) {
            LOG.debug("Resource Bundle requested: "+locale);
        }
        if (bundles == null) {
            bundles = new ResourceBundleFactory(portletDD);
        }
        return bundles.getResourceBundle(locale);
    }

    public String getInitParameter(String name) {
        if (name == null) {
            throw new IllegalArgumentException("Parameter name == null");
        }

        Iterator parms = portletDD.getInitParams().iterator();
        while(parms.hasNext()) {
            InitParamDD param = (InitParamDD)parms.next();
            if (param.getParamName().equals(name)) {
                return param.getParamValue();
            }
        }
        return null;
    }

    public Enumeration getInitParameterNames() {
        return new java.util.Enumeration() {
            private Iterator iterator =
                new ArrayList(portletDD.getInitParams()).iterator();

            public boolean hasMoreElements() {
                return iterator.hasNext();
            }

            public Object nextElement() {
                if (iterator.hasNext()) {
                    return ((InitParamDD) iterator.next()).getParamName();
                } else {
                    return null;
                }
            }
        };
    }


    public javax.servlet.ServletConfig getServletConfig() {
        return servletConfig;
    }

    public PortletDD getPortletDefinition() {
        return portletDD;
    }
    // --------------------------------------------------------------------------------------------
}