content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.camel.k.tooling.maven.support;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.security.MessageDigest;
  import java.security.NoSuchAlgorithmException;
  import java.util.Properties;
  import java.util.function.Consumer;
  
  public final class MavenSupport {
      private MavenSupport() {
      }
  
      public static String getApplicationProperty(Class<?> clazz, String property){
          try (InputStream is = clazz.getResourceAsStream("/app.properties")) {
              Properties p = new Properties();
              p.load(is);
              return p.getProperty( property );
          } catch (Exception ignored) {
          }
          return "";
      }
  
      public static String getVersion(Class<?> clazz, String path) {
          String version = null;
  
          // try to load from maven properties first
          try (InputStream is = clazz.getResourceAsStream(path)) {
              if (is != null) {
                  Properties p = new Properties();
                  p.load(is);
                  version = p.getProperty("version", "");
              }
          } catch (Exception ignored) {
          }
  
          // fallback to using Java API
          if (version == null) {
              Package aPackage = clazz.getPackage();
              if (aPackage != null) {
                  version = getVersion(aPackage);
              }
          }
  
          if (version == null) {
              // we could not compute the version so use a blank
              throw new IllegalStateException("Unable to determine runtime version");
          }
  
          return version;
      }
  
      public static String getVersion(Package pkg) {
          String version = pkg.getImplementationVersion();
          if (version == null) {
              version = pkg.getSpecificationVersion();
          }
  
          return version;
      }
  
      public static void getVersion(Class<?> clazz, String path, Consumer<String> consumer) {
          consumer.accept(
              getVersion(clazz, path)
          );
      }
  
      public static void getVersion(Class<?> clazz, String groupId, String artifactId, Consumer<String> consumer) {
          getVersion(
              clazz,
              String.format("/META-INF/maven/%s/%s/pom.properties", groupId, artifactId),
              consumer);
      }
  
      public static String getVersion(Class<?> clazz, String groupId, String artifactId) {
          return getVersion(
              clazz,
              String.format("/META-INF/maven/%s/%s/pom.properties", groupId, artifactId));
      }
  
      public static String bytesToHex(byte[] hash) {
          StringBuilder hexString = new StringBuilder();
          for (byte b : hash) {
              String hex = Integer.toHexString(0xff & b);
              if (hex.length() == 1) {
                  hexString.append('0');
              }
  
              hexString.append(hex);
          }
  
          return hexString.toString();
      }
  
      public static String sha1Hex(InputStream is) throws NoSuchAlgorithmException, IOException {
          MessageDigest digest = MessageDigest.getInstance("SHA-1");
  
          byte[] buffer = new byte[1024];
          for (int read = is.read(buffer, 0, 1024); read > -1; read = is.read(buffer, 0, 1024)) {
              digest.update(buffer, 0, read);
          }
  
          return bytesToHex(digest.digest());
      }
  }
  