/*
    * This file is part of dependency-check-core.
    *
    * 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.
   *
   * Copyright (c) 2012 Jeremy Long. All Rights Reserved.
   */
  package org.owasp.dependencycheck;
  
  import java.io.BufferedInputStream;
  import java.io.BufferedOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipInputStream;
  import org.junit.Before;
  import org.owasp.dependencycheck.BaseTest;
  import org.owasp.dependencycheck.utils.Settings;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * An abstract database test case that is used to ensure the H2 DB exists prior
   * to performing tests that utilize the data contained within.
   *
   * @author Jeremy Long
   */
  public abstract class BaseDBTestCase extends BaseTest {
  
      protected final static int BUFFER_SIZE = 2048;
  
      private final static Logger LOGGER = LoggerFactory.getLogger(BaseDBTestCase.class);
  
      @Before
      public void setUp() throws Exception {
          ensureDBExists();
      }
  
      public static void ensureDBExists() throws Exception {
  
          File f = new File("./target/data/dc.h2.db");
          if (f.exists() && f.isFile() && f.length() < 71680) {
              f.delete();
          }
  
          java.io.File dataPath = Settings.getDataDirectory();
          String fileName = Settings.getString(Settings.KEYS.DB_FILE_NAME);
          LOGGER.trace("DB file name {}", fileName);
          java.io.File dataFile = new File(dataPath, fileName);
          LOGGER.trace("Ensuring {} exists", dataFile.toString());
          if (!dataPath.exists() || !dataFile.exists()) {
              LOGGER.trace("Extracting database to {}", dataPath.toString());
              dataPath.mkdirs();
              FileInputStream fis = null;
              ZipInputStream zin = null;
              try {
                  File path = new File(BaseDBTestCase.class.getClassLoader().getResource("data.zip").toURI().getPath());
                  fis = new FileInputStream(path);
                  zin = new ZipInputStream(new BufferedInputStream(fis));
                  ZipEntry entry;
                  while ((entry = zin.getNextEntry()) != null) {
                      if (entry.isDirectory()) {
                          final File d = new File(dataPath, entry.getName());
                          d.mkdir();
                          continue;
                      }
                      FileOutputStream fos = null;
                      BufferedOutputStream dest = null;
                      try {
                          File o = new File(dataPath, entry.getName());
                          o.createNewFile();
                          fos = new FileOutputStream(o, false);
                          dest = new BufferedOutputStream(fos, BUFFER_SIZE);
                          byte data[] = new byte[BUFFER_SIZE];
                          int count;
                          while ((count = zin.read(data, 0, BUFFER_SIZE)) != -1) {
                              dest.write(data, 0, count);
                          }
                      } catch (Throwable ex) {
                          LOGGER.error("", ex);
                      } finally {
                          try {
                              if (dest != null) {
                                  dest.flush();
                                  dest.close();
                              }
                          } catch (Throwable ex) {
                              LOGGER.trace("", ex);
                         }
                         try {
                             if (fos != null) {
                                 fos.close();
                             }
                         } catch (Throwable ex) {
                             LOGGER.trace("", ex);
                         }
                     }
                 }
             } finally {
                 try {
                     if (zin != null) {
                         zin.close();
                     }
                 } catch (Throwable ex) {
                     LOGGER.trace("", ex);
                 }
                 try {
                     if (fis != null) {
                         fis.close();
                     }
                 } catch (Throwable ex) {
                     LOGGER.trace("", ex);
                 }
             }
         }
     }
 }