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  package com.taobao.android.builder.tools.sign;
  
  import com.android.apkzlib.zfile.ApkCreator;
  import com.android.apkzlib.zfile.ApkCreatorFactory;
  import com.android.apkzlib.zfile.ApkZFileCreatorFactory;
  import com.android.apkzlib.zfile.NativeLibrariesPackagingMode;
  import com.android.apkzlib.zip.ZFileOptions;
  import com.android.apkzlib.zip.compress.BestAndDefaultDeflateExecutorCompressor;
  
  import com.android.builder.signing.DefaultSigningConfig;
  import com.android.builder.signing.SigningException;
  import com.android.ide.common.signing.CertificateInfo;
  import com.android.ide.common.signing.KeystoreHelper;
  import com.android.ide.common.signing.KeytoolException;
  import com.google.common.base.Preconditions;
  import com.google.common.base.Predicate;
  import org.apache.commons.io.FileUtils;
  import org.apache.tools.ant.taskdefs.Zip;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.security.NoSuchAlgorithmException;
  
  import java.security.PrivateKey;
  import java.util.*;
  import java.util.concurrent.LinkedBlockingDeque;
  import java.util.concurrent.ThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipFile;
  
  /**
   * Created by shenghua.nish on 2015-11-06 10:54 a.m.
   */
  public class LocalSignHelper {
      /**
       * Local signature tool classes
       *
       * @param inputFile
       * @param outputFile
       * @param signingConfig
       * @return
       *
       *
       */
  
  
      private static NativeLibrariesPackagingMode nativeLibrariesPackagingMode = NativeLibrariesPackagingMode.COMPRESSED;
      public static boolean sign(File inputFile,
                                 File outputFile,
                                 DefaultSigningConfig signingConfig,
                                 String signName) throws IOException, SigningException {
  
  
              if (outputFile.exists()) {
                  FileUtils.deleteQuietly(outputFile);
              }else {
                  FileUtils.forceMkdir(outputFile.getParentFile());
              }
  
              try {
  
                  CertificateInfo certificateInfo = null;
                  if (signingConfig != null && signingConfig.isSigningReady()) {
                      certificateInfo = KeystoreHelper.getCertificateInfo(signingConfig.getStoreType(),
                              Preconditions.checkNotNull(signingConfig.getStoreFile()),
                              Preconditions.checkNotNull(signingConfig.getStorePassword()),
                              Preconditions.checkNotNull(signingConfig.getKeyPassword()),
                              Preconditions.checkNotNull(signingConfig.getKeyAlias()));
                      if (certificateInfo == null) {
                          throw new SigningException("Failed to read key from keystore");
                      }
                      System.err.println("LocalSign:"+signingConfig.toString());
                  } else {
                      throw new SigningException("SigningConfig not found or incomplete");
                  }
  
  
                  Predicate<String> noCompressPredicate = getNoCompressPredicate(inputFile.getAbsolutePath());
                          ApkCreatorFactory.CreationData creationData =
                          new ApkCreatorFactory.CreationData(
                                  outputFile,
                                  certificateInfo.getKey(),
                                  certificateInfo.getCertificate(),
                                  signingConfig.isV1SigningEnabled(),
                                  signingConfig.isV2SigningEnabled(),
                                  null,
                                  null,
                                  14,
                                  nativeLibrariesPackagingMode,
                                  noCompressPredicate);
  
                  ApkCreatorFactory apkCreatorFactory = createFactory();
  
                  ApkCreator mApkCreator = apkCreatorFactory.make(creationData);
  
                  mApkCreator.writeZip(inputFile,null,null);
  
                  mApkCreator.hasPendingChangesWithWait();
  
                  mApkCreator.close();
  
  
              } catch (Exception e) {
  
                  throw new SigningException(e.getMessage(), e);
  
              } finally {
  
              }
  
  
              return true;
  
      }
  
  
      private static ApkCreatorFactory createFactory() {
          ZFileOptions options = new ZFileOptions();
          options.setNoTimestamps(true);
          options.setCoverEmptySpaceUsingExtraField(true);
          ThreadPoolExecutor compressionExecutor =
                  new ThreadPoolExecutor(
                          0, /* Number of always alive threads */
                          2,
                          100,
                          TimeUnit.MILLISECONDS,
                          new LinkedBlockingDeque<>());
          options.setCompressor(
                  new BestAndDefaultDeflateExecutorCompressor(
                          compressionExecutor,
                          options.getTracker(),
                          1.0));
          options.setAutoSortFiles(true);
          return new ApkZFileCreatorFactory(options);
  
      }
  
      private static Predicate<String> getNoCompressPredicate(String srcPath) throws IOException {
          Set<String> noCompressEntries = new HashSet<>();
          ZipFile zipFile = new ZipFile(srcPath);
          Enumeration<? extends ZipEntry> entries = zipFile.entries();
          while (entries.hasMoreElements()){
              ZipEntry zipEntry = entries.nextElement();
              if (zipEntry.getMethod() == 0){
                  if (zipEntry.getName().endsWith(".so")){
                      nativeLibrariesPackagingMode = NativeLibrariesPackagingMode.UNCOMPRESSED_AND_ALIGNED;
                  }
                  noCompressEntries.add(zipEntry.getName());
              }
          }
          return s -> noCompressEntries.contains(s);
      }
  
      private static Predicate<String> getNoCompressPredicate(File inputFile) throws IOException {
          List<String> paths = new ArrayList<>();
          ZipFile zFile = new ZipFile(inputFile);
          Enumeration<? extends ZipEntry>enumeration =  zFile.entries();
          while (enumeration.hasMoreElements()){
              ZipEntry zipEntry = enumeration.nextElement();
              if (zipEntry.getMethod()==0){
                  paths.add(zipEntry.getName());
              }
          }
          return s -> paths.contains(s);
  
      }
  }
  