/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 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.compact.tck;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.util.Arrays;

 import java.util.LinkedHashMap;

 import java.util.Map;

 import java.util.Objects;

 import java.util.zip.ZipEntry;

 import org.apidesign.bck2brwsr.emul.zip.ZipInputStream;

 /**

  *

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

  */

 final class ZipArchive {

     private final Map<String, byte[]> entries = new LinkedHashMap<>();

     public static ZipArchive createZip(InputStream is) throws IOException {

         ZipArchive a = new ZipArchive();

         readZip(is, a);

         return a;

     }

     public static ZipArchive createReal(InputStream is) throws IOException {

         ZipArchive a = new ZipArchive();

         realZip(is, a);

         return a;

     }

     /**

      * Registers entry name and data

      */

     final void register(String entry, InputStream is) throws IOException {

         ByteArrayOutputStream os = new ByteArrayOutputStream();

         for (;;) {

             int ch = is.read();

             if (ch == -1) {

                 break;

             }

             os.write(ch);

         }

         os.close();

         entries.put(entry, os.toByteArray());

     }

     @Override

     public int hashCode() {

         return entries.hashCode();

     }

     @Override

     public boolean equals(Object obj) {

         if (obj == null) {

             return false;

         }

         if (getClass() != obj.getClass()) {

             return false;

         }

         final ZipArchive other = (ZipArchive) obj;

         if (!Objects.deepEquals(this.entries, other.entries)) {

             return false;

         }

         return true;

     }

     @Override

     public String toString() {

         StringBuilder sb = new StringBuilder();

         for (Map.Entry<String, byte[]> en : entries.entrySet()) {

             String string = en.getKey();

             byte[] bs = en.getValue();

             sb.append(string).append(" = ").append(Arrays.toString(bs)).append("\n");

         }

         return sb.toString();

     }

     public void assertEquals(ZipArchive zip, String msg) {

         boolean ok = true;

         StringBuilder sb = new StringBuilder();

         sb.append(msg);

         for (Map.Entry<String, byte[]> en : entries.entrySet()) {

             String string = en.getKey();

             byte[] bs = en.getValue();

             byte[] other = zip.entries.get(string);

             sb.append("\n");

             if (other == null) {

                 sb.append("EXTRA ").append(string).append(" = ").append(Arrays.toString(bs));

                 ok = false;

                 continue;

             }

             if (Arrays.equals(bs, other)) {

                 sb.append("OK    ").append(string);

                 continue;

             } else {

                 sb.append("DIFF  ").append(string).append(" = ").append(Arrays.toString(bs)).append("\n");

                 sb.append("    TO").append(string).append(" = ").append(Arrays.toString(other)).append("\n");

                 ok = false;

                 continue;

             }

         }

         for (Map.Entry<String, byte[]> entry : zip.entries.entrySet()) {

             String string = entry.getKey();

             if (entries.get(string) == null) {

                 sb.append("MISS  ").append(string).append(" = ").append(Arrays.toString(entry.getValue()));

                 ok = false;

             }

         }

         if (!ok) {

             assert false : sb.toString();

         }

     }

     public static void readZip(InputStream is, ZipArchive data) throws IOException {

         ZipInputStream zip = new org.apidesign.bck2brwsr.emul.zip.ZipInputStream(is);

         for (;;) {

             ZipEntry en = zip.getNextEntry();

             if (en == null) {

                 return;

             }

             data.register(en.getName(), zip);

         }

     }

     public static void realZip(InputStream is, ZipArchive data) throws IOException {

         java.util.zip.ZipInputStream zip = new java.util.zip.ZipInputStream(is);

         for (;;) {

             ZipEntry en = zip.getNextEntry();

             if (en == null) {

                 return;

             }

             data.register(en.getName(), zip);

         }

     }

 }