content: /*
   *
   *  *    Copyright (C) 2019 Amit Shekhar
   *  *    Copyright (C) 2011 Android Open Source Project
   *  *
   *  *    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.
   *
   */
  
  package com.amitshekhar.utils;
  
  import android.content.res.AssetManager;
  import android.text.TextUtils;
  import android.util.Log;
  import android.util.Pair;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.HashMap;
  
  /**
   * Created by amitshekhar on 06/02/17.
   */
  
  public class Utils {
  
      private static final String TAG = "Utils";
  
      private Utils() {
          // This class in not publicly instantiable
      }
  
      public static String detectMimeType(String fileName) {
          if (TextUtils.isEmpty(fileName)) {
              return null;
          } else if (fileName.endsWith(".html")) {
              return "text/html";
          } else if (fileName.endsWith(".js")) {
              return "application/javascript";
          } else if (fileName.endsWith(".css")) {
              return "text/css";
          } else {
              return "application/octet-stream";
          }
      }
  
      public static byte[] loadContent(String fileName, AssetManager assetManager) throws IOException {
          InputStream input = null;
          try {
              ByteArrayOutputStream output = new ByteArrayOutputStream();
              input = assetManager.open(fileName);
              byte[] buffer = new byte[1024];
              int size;
              while (-1 != (size = input.read(buffer))) {
                  output.write(buffer, 0, size);
              }
              output.flush();
              return output.toByteArray();
          } catch (FileNotFoundException e) {
              return null;
          } finally {
              try {
                  if (null != input) {
                      input.close();
                  }
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
      }
  
      public static byte[] getDatabase(String selectedDatabase, HashMap<String, Pair<File, String>> databaseFiles) {
          if (TextUtils.isEmpty(selectedDatabase) || !databaseFiles.containsKey(selectedDatabase)) {
              return null;
          }
  
          byte[] byteArray = new byte[0];
          try {
              File file = databaseFiles.get(selectedDatabase).first;
  
              byteArray = null;
              try {
                  InputStream inputStream = new FileInputStream(file);
                  ByteArrayOutputStream bos = new ByteArrayOutputStream();
                  byte[] b = new byte[(int) file.length()];
                  int bytesRead;
  
                  while ((bytesRead = inputStream.read(b)) != -1) {
                      bos.write(b, 0, bytesRead);
                  }
  
                  byteArray = bos.toByteArray();
              } catch (IOException e) {
                  Log.e(TAG, "getDatabase: ", e);
              }
          } catch (Exception e) {
              e.printStackTrace();
          }
  
          return byteArray;
      }
  
  }
  