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  package android.taobao.atlas.startup.patch.releaser;
  
  /**
   * Created by lilong on 16/12/21.
   */
  import android.os.Build;
  import android.os.Handler;
  import android.os.Looper;
  import android.os.Message;
  import android.taobao.atlas.runtime.RuntimeVariables;
  import android.taobao.atlas.startup.DexFileCompat;
  import android.taobao.atlas.startup.patch.KernalConstants;
  import android.util.Log;
  import java.io.File;
  import java.io.FilenameFilter;
  import java.io.IOException;
  import java.io.InputStream;
  import java.lang.reflect.Method;
  import java.util.*;
  import java.util.Enumeration;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.Executor;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import dalvik.system.DexFile;
  
  public class BundleReleaser {
      private static final int MSG_ID_DEX_RELEASE_DONE = 1;
      public static final int MSG_ID_DEX_OPT_DONE = 2;
      private static final int MSG_ID_RESOURCE_RELEASE_DONE = 3;
      private static final int MSG_ID_SOLIB_RELEASE_DONE = 4;
      private static final int MSG_ID_RELEASE_DONE = 5;
      private static final int MSG_ID_RELEASE_FAILED = 6;
  
      private static final String TAG = BundleReleaser.class.getSimpleName();
      private static final String DEX_SUFFIX = ".dex";
      private boolean isReleasing = false;
      private ExecutorService service;
      private File reversionDir;
      private Handler handler;
      private ProcessCallBack processCallBack;
      private File apkFile;
      private boolean hasReleased;
      private boolean externalStorage = false;
  
      public DexFile[] getDexFile() {
          return dexFiles;
      }
  
      private DexFile[] dexFiles = null;
  
      public BundleReleaser(final File reversionDir,boolean hasReleased) {
  
          this.hasReleased = hasReleased;
          this.reversionDir = reversionDir;
          if(!reversionDir.getAbsolutePath().startsWith(KernalConstants.baseContext.getFilesDir().getAbsolutePath())){
              externalStorage = true;
          }
          if (!(Looper.getMainLooper() == Looper.myLooper())) {
              if (Looper.myLooper() == null)
                  Looper.prepare();
          }
          handler = new Handler(new Handler.Callback() {
              @Override
              public boolean handleMessage(Message msg) {
                  try {
                      return handleMsg(msg);
                  } catch (IOException e) {
                      e.printStackTrace();
                  }
                  return false;
              }
          });
  
          this.service = Executors.newFixedThreadPool(3);
      }
  
      private boolean handleMsg(Message msg) throws IOException {
          switch (msg.what) {
              case MSG_ID_DEX_OPT_DONE:
                  isReleasing = false;
                  if (processCallBack != null)
                      processCallBack.onFinish(MSG_ID_DEX_OPT_DONE);
                  try {
                      release(ReleaseType.RESOURCE);
                  } catch (IOException e) {
                      e.printStackTrace();
                  }
                  return true;
              case MSG_ID_RELEASE_FAILED:
                  if (processCallBack != null) {
                      processCallBack.onFailed();
                  }
  
                  break;
              case MSG_ID_DEX_RELEASE_DONE:
                  if (processCallBack != null) {
                      processCallBack.onFinish(MSG_ID_DEX_RELEASE_DONE);
                  }
                  dexOptimization();
                  return true;
  
              case MSG_ID_RELEASE_DONE:
                  if (processCallBack != null) {
                      processCallBack.onAllFinish();
                  }
                  return true;
  
              case MSG_ID_RESOURCE_RELEASE_DONE:
                  if (processCallBack != null) {
                      processCallBack.onFinish(MSG_ID_RESOURCE_RELEASE_DONE);
                  }
                  try {
                      release(ReleaseType.SOLIB);
                  } catch (IOException e) {
                      e.printStackTrace();
                  }
                  break;
              default:
                  break;
          }
  
          return false;
      }
  
  
      public void release(final ProcessCallBack processCallBack, final File bundleFile,boolean start) throws IOException {
          Log.e(TAG, "release doing--->" + isReleasing);
          apkFile = bundleFile;
          if (isReleasing) {
              return;
          }
          isReleasing = true;
          this.processCallBack = processCallBack;
          if (!start) {
              release(ReleaseType.DEX);
          }else {
              dexOptimization();
              if (!handler.hasMessages(MSG_ID_RELEASE_FAILED)) {
                  processCallBack.onFinish(MSG_ID_DEX_OPT_DONE);
                  processCallBack.onAllFinish();
  //                handler.removeCallbacksAndMessages(null);
              }else {
                  processCallBack.onFailed();
  //                handler.removeCallbacksAndMessages(null);
              }
          }
      }
  
  
      public void release(final ReleaseType releaseType) throws IOException {
                  switch (releaseType) {
                      case DEX:
                          try {
                              Log.e(TAG, "DexReleaser start!");
                              boolean result = DexReleaser.releaseDexes(apkFile, reversionDir,externalStorage);
                              Log.e(TAG, "DexReleaser done!----->"+result);
                              Message message = handler.obtainMessage();
                              if (result) {
                                  message.what = MSG_ID_DEX_RELEASE_DONE;
                              } else {
                                  message.what = MSG_ID_RELEASE_FAILED;
                              }
                              handler.sendMessage(message);
                          } catch (IOException e) {
                              e.printStackTrace();
                          }
                          break;
  //                    case RESOURCE:
  //                        try {
  //                            Log.e(TAG, "ResourceReleaser start!");
  //                            boolean result = ResourceReleaser.releaseResource(apkFile, reversionDir);
  //                            Log.e(TAG, "ResourceReleaser done!----->"+result);
  //
  //                            Message message = handler.obtainMessage();
  //                            if (result) {
  //                                message.what = MSG_ID_RESOURCE_RELEASE_DONE;
  //                            } else {
  //                                message.what = MSG_ID_RELEASE_FAILED;
  //                            }
  //                            handler.sendMessage(message);
  //                        } catch (IOException e) {
  //                            e.printStackTrace();
  //                        }
  //                        break;
  //                    case SOLIB:
  //                        try {
  //                            Log.e(TAG, "NativeLibReleaser start!");
  ////                            boolean result = NativeLibReleaser.releaseLibs(apkFile, reversionDir);
  //                            Log.e(TAG, "NativeLibReleaser done!----->"+result);
  //                            Message message = handler.obtainMessage();
  //                            if (result) {
  //                                message.what = MSG_ID_RELEASE_DONE;
  //                            } else {
  //                                message.what = MSG_ID_RELEASE_FAILED;
  //                            }
  //                            handler.sendMessage(message);
  //                        } catch (IOException e) {
  //                            e.printStackTrace();
  //                        }
  //                        break;
                      default:
                          break;
  
                  }
  
      }
  
      private void dexOptimization() {
          Log.e(TAG, "dexOptimization start");
          File[] validDexes = reversionDir.listFiles(new FilenameFilter() {
              @Override
  
              public boolean accept(File dir,String pathname) {
                  if (!DexReleaser.isArt() || externalStorage) {
                    return pathname.endsWith(DEX_SUFFIX);
                  } else {
                      return pathname.endsWith(".zip");
                  }
              }
          });
  
          File[] rawMainDexZip = reversionDir.listFiles(new FilenameFilter() {
              @Override
              public boolean accept(File dir, String pathname) {
                  return pathname.endsWith(".zip");
  
              }
          });
  
          if (validDexes!= null && validDexes.length > 0) {
              validDexes = sortDexs(validDexes);
              if (Build.VERSION.SDK_INT >= 21 && Build.VERSION.SDK_INT <= 24) {
                  PatchDexProfile.instance(RuntimeVariables.androidApplication).disableJitCompile();
              }
          }else if (rawMainDexZip!= null){
  
              validDexes = rawMainDexZip;
          }
  
          dexFiles = new DexFile[validDexes.length];
          if(!hasReleased) {
              Log.e(TAG,"start dexopt | hasRelease : "+hasReleased);
              final CountDownLatch countDownLatch = new CountDownLatch(validDexes.length);
              for (int i = 0; i < validDexes.length; i++) {
                  final int j = i;
                  final File[] finalValidDexes = validDexes;
  
                  service.submit(new Runnable() {
                      @Override
                      public void run() {
                          dexFiles[j] = dexoptInternal(finalValidDexes[j]);
                          countDownLatch.countDown();
                      }
                  });
              }
              try {
                  countDownLatch.await();
              } catch (InterruptedException e) {
                  e.printStackTrace();
              }
          }else{
              Log.e(TAG,"start dexopt | hasRelease : "+hasReleased);
              for (int i = 0; i < validDexes.length; i++) {
                  dexFiles[i] = dexoptInternal(validDexes[i]);
              }
          }
  
          Log.e(TAG, "dex opt done");
          handler.sendMessage(handler.obtainMessage(MSG_ID_DEX_OPT_DONE));
      }
  
      private String[] toString(File[] validDexes) {
          String[]ss = new String[validDexes.length];
          for (int i = 0; i < ss.length; i ++){
              ss[i] = validDexes[i].getPath();
          }
          return ss;
      }
  
      private File[] sortDexs(File[] validDexes) {
          if (validDexes == null){
              return validDexes;
          }else {
             List<File>files = Arrays.asList(validDexes);
             Collections.sort(files, new Comparator<File>() {
                 @Override
                 public int compare(File lhs, File rhs) {
                     if (lhs.getName().equals("classes.dex")) {
                         return -1;
                     } else if (rhs.getName().equals("classes.dex")) {
                         return 1;
                     }
                     return Integer.valueOf(lhs.getName().substring(7, lhs.getName().indexOf("."))) - Integer.valueOf(rhs.getName().substring(7, rhs.getName().indexOf(".")));
                 }
             });
             return files.toArray(new File[0]);
          }
  
      }
  
      private DexFile dexoptInternal(File validDex){
          long startTime = System.currentTimeMillis();
          DexFile dexFile = null;
          String optimizedPath = optimizedPathFor(validDex, dexOptDir());
          try {
              if(!externalStorage) {
  
                  if(!new File(optimizedPath).exists()){
                      Log.e(TAG,"odex not exist");
                  }
              }else{
                  //interpretOnly
                  if(Build.VERSION.SDK_INT>=21 && isVMMultidexCapable(System.getProperty("java.vm.version"))) {
                      optimizedPath = KernalConstants.baseContext.getFilesDir()+File.separator+"fake.dex";
                      new File(optimizedPath).createNewFile();
                      dexFile = DexFileCompat.loadDex(KernalConstants.baseContext, validDex.getPath(), optimizedPath, 0);
                  }else{
                      dexFile = DexFileCompat.loadDex(KernalConstants.baseContext,validDex.getPath(), optimizedPath,0);
                  }
              }
              boolean result = verifyDexFile(dexFile,optimizedPath);
              if (!result) {
                  
                  handler.sendMessage(handler.obtainMessage(MSG_ID_RELEASE_FAILED));
              }else {
                  Log.e(TAG,"oat length:"+String.valueOf(new File(optimizedPath).length()));
              }
          } catch (Exception e) {
              e.printStackTrace();
              handler.sendMessage(handler.obtainMessage(MSG_ID_RELEASE_FAILED));
          } finally {
              Log.e(TAG, String.format("dex %s consume %d ms", validDex.getAbsolutePath(),
                      System.currentTimeMillis() - startTime));
          }
          return dexFile;
      }
  
      private boolean verifyDexFile(DexFile dexFile,String optimizedPath) throws IOException {
          if (dexFile != null) {
              if(externalStorage){
                  return true;
              }
              if (!checkDexValid(dexFile)) {
                  return false;
              }
  
              return true;
          }
          return false;
      }
  
      public boolean checkDexValid(DexFile odexFile) throws IOException {
          if (DexReleaser.isArt()) {
              String applicationName = KernalConstants.RAW_APPLICATION_NAME;
              try {
                  Enumeration<String> enumeration = odexFile.entries();
                  while (enumeration.hasMoreElements()) {
                      if (enumeration.nextElement().replace("/", ".").equals(applicationName)) {
                          return true;
                      }
                  }
                  return false;
              } catch (Throwable e) {
                  e.printStackTrace();
                  return false;
              }
          }
          return true;
      }
  
  
      private String optimizedPathFor(File path, File optimizedDirectory) {
          String fileName = path.getName();
          if (!fileName.endsWith(DEX_SUFFIX)) {
              int lastDot = fileName.lastIndexOf(".");
              if (lastDot < 0) {
                  fileName += DEX_SUFFIX;
              } else {
                  StringBuilder sb = new StringBuilder(lastDot + 4);
                  sb.append(fileName, 0, lastDot);
                  sb.append(DEX_SUFFIX);
                  fileName = sb.toString();
              }
          }
          File result = new File(optimizedDirectory, fileName);
          return result.getPath();
  
      }
  
      private File dexOptDir() {
          File optDir = new File(reversionDir, "opt");
          if (!optDir.exists()){
              optDir.mkdirs();
          }
          return optDir;
      }
  
      public void close(){
          if (!(Looper.getMainLooper() == Looper.myLooper())){
              Looper.myLooper().quit();
          }
          handler.removeCallbacksAndMessages(null);
          handler = null;
          service.shutdown();
      }
  
      /**
       * Identifies if the current VM has a native support for multidex, meaning there is no need for
       * additional installation by this library.
       * @return true if the VM handles multidex
       */
      /* package visible for test */
      static boolean isVMMultidexCapable(String versionString) {
          boolean isMultidexCapable = false;
          if (versionString != null) {
              Matcher matcher = Pattern.compile("(\\d+)\\.(\\d+)(\\.\\d+)?").matcher(versionString);
              if (matcher.matches()) {
                  try {
                      int major = Integer.parseInt(matcher.group(1));
                      int minor = Integer.parseInt(matcher.group(2));
                      isMultidexCapable = (major > 2)
                              || ((major == 2)
                              && (minor >= 1));
                  } catch (NumberFormatException e) {
                      // let isMultidexCapable be false
                  }
              }
          }
          Log.i(TAG, "VM with version " + versionString +
                  (isMultidexCapable ?
                          " has multidex support" :
                          " does not have multidex support"));
          return isMultidexCapable;
      }
  
  
      private void dexOat(String dexFilePath,String oatFilePath,String targetISA) throws IOException, InterruptedException {
          final List<String> commandAndParams = new ArrayList<>();
          commandAndParams.add("dex2oat");
          if (Build.VERSION.SDK_INT >= 24) {
              commandAndParams.add("--runtime-arg");
              commandAndParams.add("-classpath");
              commandAndParams.add("--runtime-arg");
              commandAndParams.add("&");
          }
          commandAndParams.add("--dex-file=" + dexFilePath);
          commandAndParams.add("--oat-file=" + oatFilePath);
          commandAndParams.add("--instruction-set=" + targetISA);
          if (Build.VERSION.SDK_INT > 25) {
              commandAndParams.add("--compiler-filter=quicken");
          } else {
              commandAndParams.add("--compiler-filter=interpret-only");
          }
          final ProcessBuilder pb = new ProcessBuilder(commandAndParams);
          pb.redirectErrorStream(true);
          final Process dex2oatProcess = pb.start();
          StreamConsumer.consumeInputStream(dex2oatProcess.getInputStream());
          StreamConsumer.consumeInputStream(dex2oatProcess.getErrorStream());
              final int ret = dex2oatProcess.waitFor();
              if (ret != 0) {
                  throw new IOException("dex2oat works unsuccessfully, exit code: " + ret);
              }
  
      }
  
      public interface ProcessCallBack{
  
          void onFailed() throws IOException;
  
          void onFinish(int event);
  
          void onAllFinish();
  
      }
  
      private static class StreamConsumer {
          static final Executor STREAM_CONSUMER = Executors.newSingleThreadExecutor();
  
          static void consumeInputStream(final InputStream is) {
              STREAM_CONSUMER.execute(new Runnable() {
                  @Override
                  public void run() {
                      if (is == null) {
                          return;
                      }
                      final byte[] buffer = new byte[256];
                      try {
                          while ((is.read(buffer)) > 0) {
                              // To satisfy checkstyle rules.
                          }
                      } catch (IOException ignored) {
                          // Ignored.
                      } finally {
                          try {
                              is.close();
                          } catch (Exception ignored) {
                              // Ignored.
                          }
                      }
                  }
              });
          }
      }
  
      public static String getCurrentInstructionSet() throws Exception {
          String currentInstructionSet = null;
          if (currentInstructionSet != null) {
              return currentInstructionSet;
          }
          Class<?> clazz = Class.forName("dalvik.system.VMRuntime");
          Method currentGet = clazz.getDeclaredMethod("getCurrentInstructionSet");
  
          currentInstructionSet = (String) currentGet.invoke(null);
          Log.d(TAG, "getCurrentInstructionSet:" + currentInstructionSet);
          return currentInstructionSet;
      }
  
  
  }