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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2009-2016 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
// Portions Copyright [2019-2021] Payara Foundation and/or affiliates

package org.glassfish.faces.integration;

import com.sun.enterprise.module.HK2Module;
import com.sun.enterprise.module.ModulesRegistry;
import com.sun.enterprise.util.net.JarURIPattern;
import org.jvnet.hk2.annotations.Service;
import org.glassfish.api.web.TldProvider;
import org.glassfish.hk2.api.PostConstruct;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
import java.text.MessageFormat;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Pattern;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;

import org.glassfish.web.loader.LogFacade;

/**
 * Implementation of TldProvider for JSF.
 * 
 * @author Shing Wai Chan
 * @author Sahoo
 */
@Service(name = "jsfTld")
@Singleton
public class GlassFishTldProvider implements TldProvider, PostConstruct {

    private static final Logger logger = LogFacade.getLogger();

    private static final ResourceBundle rb = logger.getResourceBundle();

    @Inject
    ModulesRegistry registry;

    private Map> tldMap = new HashMap>();

    private Map> tldListenerMap = null;

    /**
     * Gets the name of this TldProvider
     */
    public String getName() {
        return "jsfTld";
    }

    /**
     * Gets a mapping from JAR files to their TLD resources.
     */
    @SuppressWarnings("unchecked")
    public Map> getTldMap() {
        return (Map>) ((HashMap) tldMap).clone();
    }

    /**
     * Gets a mapping from JAR files to their TLD resources that are known to contain listener declarations.
     */
    public synchronized Map> getTldListenerMap() {
        if (tldListenerMap == null) {
            tldListenerMap = new HashMap>();
            for (Map.Entry> entry : tldMap.entrySet()) {
                URI uri = entry.getKey();
                /*
                 * In the case of JSF, the only TLD that declares any listener is META-INF/jsf_core.tld
                 */
                if (entry.getValue().contains("META-INF/jsf_core.tld")) {
                    tldListenerMap.put(uri, entry.getValue());
                    break;
                }
            }
            tldListenerMap = Collections.unmodifiableMap(tldListenerMap);
        }

        return tldListenerMap;
    }

    public void postConstruct() {

        Class jsfImplClass = null;
        try {
            jsfImplClass = getClass().getClassLoader().loadClass("com.sun.faces.spi.InjectionProvider");
        } catch (ClassNotFoundException ignored) {
        }

        URI[] uris = null;
        HK2Module m = null;
        if (jsfImplClass != null) {
            m = registry.find(jsfImplClass);
        }
        if (m != null) {
            uris = m.getModuleDefinition().getLocations();
        } else {
            ClassLoader classLoader = getClass().getClassLoader();
            if (classLoader instanceof URLClassLoader) {
                URL[] urls = ((URLClassLoader) classLoader).getURLs();
                if (urls != null && urls.length > 0) {
                    uris = new URI[urls.length];
                    for (int i = 0; i < urls.length; i++) {
                        try {
                            uris[i] = urls[i].toURI();
                        } catch (URISyntaxException e) {
                            String msg = rb.getString(LogFacade.TLD_PROVIDER_IGNORE_URL);
                            msg = MessageFormat.format(msg, urls[i]);
                            logger.log(Level.WARNING, msg, e);
                        }
                    }
                }
            } else {
                logger.log(Level.WARNING, LogFacade.UNABLE_TO_DETERMINE_TLD_RESOURCES,
                        new Object[] { "JSF", classLoader, GlassFishTldProvider.class.getName() });
            }
        }

        if (uris != null && uris.length > 0) {
            Pattern pattern = Pattern.compile("META-INF/.*\\.tld");
            for (URI uri : uris) {
                List entries = JarURIPattern.getJarEntries(uri, pattern);
                if (entries != null && entries.size() > 0) {
                    tldMap.put(uri, entries);
                }
            }
        }
    }
}