/**
 * Copyright 2011 JogAmp Community. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 * 
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 * 
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list
 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied, of JogAmp Community.
 */
 
package com.jogamp.common.util;

import java.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;
import java.net.URLConnection;
import java.net.JarURLConnection;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import junit.framework.Assert;

import org.junit.BeforeClass;
import org.junit.Test;

import com.jogamp.common.GlueGenVersion;
import com.jogamp.common.util.cache.TempCacheReg;
import com.jogamp.common.util.cache.TempFileCache;
import com.jogamp.common.util.cache.TempJarCache;
import com.jogamp.junit.util.JunitTracer;

public class TestJarUtil extends JunitTracer {
    static TempFileCache fileCache;
    
    @BeforeClass
    public static void init() {
        // may already been initialized by other test
        // Assert.assertFalse(TempCacheReg.isTempFileCacheUsed());
        Assert.assertTrue(TempFileCache.initSingleton());
        Assert.assertTrue(TempCacheReg.isTempFileCacheUsed());
        
        fileCache = new TempFileCache();
        Assert.assertTrue(fileCache.isValid());
        System.err.println("tmp dir: "+fileCache.getTempDir());
    }
    
    static class TestClassLoader extends URLClassLoader {
        public TestClassLoader(URL[] urls) {
            super(urls);
        }
        public TestClassLoader(URL[] urls, ClassLoader parent) {
            super(urls, parent);
        }
    }
    
    void validateJarFile(JarFile jarFile) throws IllegalArgumentException, IOException {
        Assert.assertNotNull(jarFile);     
        Assert.assertTrue("jarFile has zero entries: "+jarFile, jarFile.size()>0);
        Enumeration<JarEntry> entries = jarFile.entries();
        System.err.println("Entries of "+jarFile.getName()+": ");
        int i = 0;
        while(entries.hasMoreElements()) {
            System.err.println(i+": "+entries.nextElement().getName());
            i++;
        }
    }
    
    void validateJarFileURL(URL jarFileURL) throws IllegalArgumentException, IOException {
        Assert.assertNotNull(jarFileURL);     
        URLConnection aURLc = jarFileURL.openConnection();
        Assert.assertTrue("jarFileURL has zero content: "+jarFileURL, aURLc.getContentLength()>0);
        System.err.println("URLConnection: "+aURLc);
        Assert.assertTrue("Not a JarURLConnection: "+aURLc, (aURLc instanceof JarURLConnection) );
        JarURLConnection jURLc = (JarURLConnection) aURLc;
        JarFile jarFile = jURLc.getJarFile();
        validateJarFile(jarFile);
    }
    
    void validateJarUtil(String expJarName, String clazzBinName, ClassLoader cl) throws IllegalArgumentException, IOException {
        String jarName= JarUtil.getJarBasename(clazzBinName, cl);
        Assert.assertNotNull(jarName);
        Assert.assertEquals(expJarName, jarName);
        
        URL jarSubURL = JarUtil.getJarSubURL(clazzBinName, cl);
        Assert.assertNotNull(jarSubURL);     
        URLConnection urlConn = jarSubURL.openConnection();
        Assert.assertTrue("jarSubURL has zero content: "+jarSubURL, urlConn.getContentLength()>0);
        System.err.println("URLConnection of jarSubURL: "+urlConn);
        
        URL jarFileURL = JarUtil.getJarFileURL(clazzBinName, cl);
        validateJarFileURL(jarFileURL);
                
        JarFile jarFile = JarUtil.getJarFile(clazzBinName, cl);
        validateJarFile(jarFile);
    }
    
    @Test
    public void testJarUtilFlat01() throws IOException {
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
        validateJarUtil("TestJarsInJar.jar", "ClassInJar0", this.getClass().getClassLoader());
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
    }

    @Test
    public void testJarUtilJarInJar01() throws IOException, ClassNotFoundException {
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
        
        Assert.assertTrue(TempJarCache.initSingleton());
        Assert.assertTrue(TempCacheReg.isTempJarCacheUsed());
        Assert.assertTrue(TempJarCache.isInitialized());
        
        final ClassLoader rootCL = this.getClass().getClassLoader();
        
        // Get containing JAR file "TestJarsInJar.jar" and add it to the TempJarCache
        TempJarCache.addAll(GlueGenVersion.class, JarUtil.getJarFileURL("ClassInJar0", rootCL), rootCL); 
        
        // Fetch and load the contained "ClassInJar1.jar"
        final URL ClassInJar1_jarFileURL = JarUtil.getJarFileURL(TempJarCache.getResource("ClassInJar1.jar"));
        final ClassLoader cl = new URLClassLoader(new URL[] { ClassInJar1_jarFileURL }, rootCL);
        Assert.assertNotNull(cl);        
        validateJarUtil("ClassInJar1.jar", "ClassInJar1", cl);
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
    }
    
    @Test
    public void testJarUtilJarInJar02() throws IOException, ClassNotFoundException {
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
        
        Assert.assertTrue(TempJarCache.initSingleton());
        Assert.assertTrue(TempCacheReg.isTempJarCacheUsed());
        Assert.assertTrue(TempJarCache.isInitialized());
        
        final ClassLoader rootCL = this.getClass().getClassLoader();
        
        // Get containing JAR file "TestJarsInJar.jar" and add it to the TempJarCache
        TempJarCache.addAll(GlueGenVersion.class, JarUtil.getJarFileURL("ClassInJar0", rootCL), rootCL);
        
        // Fetch and load the contained "ClassInJar1.jar"
        final URL ClassInJar2_jarFileURL = JarUtil.getJarFileURL(TempJarCache.getResource("sub/ClassInJar2.jar"));
        final ClassLoader cl = new URLClassLoader(new URL[] { ClassInJar2_jarFileURL }, rootCL);
        Assert.assertNotNull(cl);        
        validateJarUtil("ClassInJar2.jar", "ClassInJar2", cl);
        System.err.println("XXXXXXXXXXXXXXXXXXXXXXXXXXXX");
    }
    
    public static void main(String args[]) throws IOException {
        String tstname = TestJarUtil.class.getName();
        org.junit.runner.JUnitCore.main(tstname);
    }

}