/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * 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 General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.bck2brwsr.vmtest.impl;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.zip.ZipEntry;

 import java.util.zip.ZipInputStream;

 import org.apidesign.bck2brwsr.core.JavaScriptBody;

 import org.apidesign.bck2brwsr.vmtest.BrwsrTest;

 import org.apidesign.bck2brwsr.vmtest.Compare;

 import org.apidesign.bck2brwsr.vmtest.Http;

 import org.apidesign.bck2brwsr.vmtest.VMTest;

 import org.testng.annotations.Factory;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 @GenerateZip(name = "readAnEntry.zip", contents = { 

     "my/main/file.txt", "Hello World!"

 })

 public class ZipFileTest {

     @Compare public String readAnEntry() throws IOException {

         InputStream is = ZipFileTest.class.getResourceAsStream("readAnEntry.zip");

         ZipInputStream zip = new ZipInputStream(is);

         ZipEntry entry = zip.getNextEntry();

         assertEquals(entry.getName(), "my/main/file.txt", "Correct entry");

         byte[] arr = new byte[4096];

         int len = zip.read(arr);

         assertEquals(zip.getNextEntry(), null, "No next entry");

         final String ret = new String(arr, 0, len, "UTF-8");

         return ret;

     }

     @JavaScriptBody(args = { "res", "path" }, body = 

           "var myvm = bck2brwsr.apply(null, path);\n"

         + "var cls = myvm['loadClass']('java.lang.String');\n"

         + "return cls['getClass__Ljava_lang_Class_2']()['getResourceAsStream__Ljava_io_InputStream_2Ljava_lang_String_2'](res);\n"

     )

     private static native Object loadVMResource(String res, String...path);

     @Http({

         @Http.Resource(path = "/readAnEntry.jar", mimeType = "x-application/zip", content = "", resource="readAnEntry.zip")

     })

     @BrwsrTest  public void canVmLoadResourceFromZip() throws IOException {

         Object res = loadVMResource("/my/main/file.txt", "/readAnEntry.jar");

         assert res instanceof InputStream : "Got array of bytes: " + res;

         InputStream is = (InputStream)res;

         byte[] arr = new byte[4096];

         int len = is.read(arr);

         final String ret = new String(arr, 0, len, "UTF-8");

         assertEquals(ret, "Hello World!", "Can read the bytes");

     }

     @GenerateZip(name = "cpattr.zip", contents = { 

         "META-INF/MANIFEST.MF", "Manifest-Version: 1.0\n"

         + "Created-By: hand\n"

         + "Class-Path: realJar.jar\n\n\n"

     })

     @Http({

         @Http.Resource(path = "/readComplexEntry.jar", mimeType = "x-application/zip", content = "", resource="cpattr.zip"),

         @Http.Resource(path = "/realJar.jar", mimeType = "x-application/zip", content = "", resource="readAnEntry.zip"),

     })

     @BrwsrTest  public void understandsClassPathAttr() throws IOException {

         Object res = loadVMResource("/my/main/file.txt", "/readComplexEntry.jar");

         assert res instanceof InputStream : "Got array of bytes: " + res;

         InputStream is = (InputStream)res;

         byte[] arr = new byte[4096];

         int len = is.read(arr);

         final String ret = new String(arr, 0, len, "UTF-8");

         assertEquals(ret, "Hello World!", "Can read the bytes from secondary JAR");

     }

     private static void assertEquals(Object real, Object exp, String msg) {

         if (real == null) {

             if (exp == null) {

                 return;

             }

         } else {

             if (real.equals(exp)) {

                 return;

             }

         }

         assert false : msg + " exp: " + exp + " real: " + real;

     }

     @Factory public static Object[] create() {

         return VMTest.create(ZipFileTest.class);

     }

 }