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package de.thedevstack.conversationsplus.persistance;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import android.webkit.MimeTypeMap;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import de.thedevstack.android.logcat.Logging;
import de.thedevstack.conversationsplus.ConversationsPlusApplication;
import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
import de.thedevstack.conversationsplus.entities.FileParams;
import de.thedevstack.conversationsplus.exceptions.FileCopyException;
import de.thedevstack.conversationsplus.persistance.observers.FileDeletionObserver;
import de.thedevstack.conversationsplus.utils.StreamUtil;
import de.thedevstack.conversationsplus.Config;
import de.thedevstack.conversationsplus.R;
import de.thedevstack.conversationsplus.entities.DownloadableFile;
import de.thedevstack.conversationsplus.entities.Message;
import de.thedevstack.conversationsplus.services.XmppConnectionService;
import de.thedevstack.conversationsplus.utils.XmppConnectionServiceAccessor;
public class FileBackend {
private static final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
private static FileBackend INSTANCE;
private FileDeletionObserver privateFilesDirectoryObserver;
private FileDeletionObserver privateFilesImageDirectoryObserver;
private FileDeletionObserver conversationsFilesDirectoryObserver;
private FileDeletionObserver conversationsImagesDirectoryObserver;
public static void init() {
if (null == INSTANCE) {
INSTANCE = new FileBackend();
}
INSTANCE.initFileObservers();
INSTANCE.createNoMedia();
}
private void initFileObservers() {
this.privateFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getPrivateFileDirectoryPath());
this.privateFilesImageDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
this.conversationsFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsImageDirectory());
this.conversationsImagesDirectoryObserver = new FileDeletionObserver(FileBackend.getPrivateImageDirectoryPath());
this.privateFilesDirectoryObserver.startWatching();
this.privateFilesImageDirectoryObserver.startWatching();
this.conversationsFilesDirectoryObserver.startWatching();
this.conversationsImagesDirectoryObserver.startWatching();
}
private void createNoMedia() {
final File nomedia = new File(getConversationsFileDirectory()+".nomedia");
if (!nomedia.exists()) {
try {
nomedia.createNewFile();
} catch (Exception e) {
Log.d(Config.LOGTAG, "could not create nomedia file");
}
}
}
public static void onFileTransferFolderChanged() {
INSTANCE.conversationsFilesDirectoryObserver.stopWatching();
INSTANCE.conversationsFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
INSTANCE.conversationsFilesDirectoryObserver.startWatching();
INSTANCE.createNoMedia();
}
public static void onImageTransferFolderChanged() {
INSTANCE.conversationsImagesDirectoryObserver.stopWatching();
INSTANCE.conversationsImagesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsImageDirectory());
INSTANCE.conversationsImagesDirectoryObserver.startWatching();
}
public static void updateMediaScanner(File file, XmppConnectionService xmppConnectionService) {
if (file.getAbsolutePath().startsWith(getConversationsImageDirectory())) {
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(file));
xmppConnectionService.sendBroadcast(intent);
}
}
public static boolean deleteFile(Message message) {
File file = getFile(message);
if (file.delete()) {
updateMediaScanner(file, XmppConnectionServiceAccessor.xmppConnectionService);
return true;
} else {
return false;
}
}
public static DownloadableFile getFile(Message message) {
return getFile(message, true);
}
public static DownloadableFile getFile(Message message, boolean decrypted) {
DownloadableFile downloadableFile = new DownloadableFile(getFilePath(message, decrypted));
FileParams fileParams = message.getFileParams();
if (null != fileParams) {
if (null != fileParams.getKey()) {
downloadableFile.setKey(fileParams.getKey());
}
if (null != fileParams.getIv()) {
downloadableFile.setIv(fileParams.getIv());
}
}
return downloadableFile;
}
protected static String getFilePath(Message message, String extension) {
String path = FileBackend.getFilePath(message, true);
if (!path.endsWith(extension)) {
path += "." + extension;
}
return path;
}
protected static String getFilePath(Message message, Uri uri) {
String mime = ConversationsPlusApplication.getInstance().getContentResolver().getType(uri);
String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
return getFilePath(message, extension);
}
protected static String getFilePath(Message message, boolean decrypted) {
final boolean encrypted = !decrypted
&& (message.getEncryption() == Message.ENCRYPTION_PGP
|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
FileParams fileParams = message.getFileParams();
if (null == fileParams) {
fileParams = new FileParams();
message.setFileParams(fileParams);
}
String path = fileParams.getPath();
if (null == path) { // File does not yet exist
path = message.getUuid();
String mime = message.getMimeType();
if (mime != null && mime.startsWith("image")) { // TODO: Check if this can be determined in a better way
path = getConversationsImageDirectory() + path;
} else {
path = getConversationsFileDirectory() + path;
}
String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
path += "." + extension;
fileParams.setPath(path);
}
if (encrypted) {
path += ".pgp";
}
return path;
}
public static String getConversationsFileDirectory() {
return Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + ConversationsPlusPreferences.fileTransferFolder() + File.separator;
}
public static String getConversationsImageDirectory() {
return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsolutePath() + File.separator + ConversationsPlusPreferences.imgTransferFolder() + File.separator;
}
public static String getPrivateFileDirectoryPath() {
return ConversationsPlusApplication.getPrivateFilesDir().getAbsolutePath();
}
private static String getPrivateImageDirectoryPath() {
return FileBackend.getPrivateFileDirectoryPath() + File.separator + "Images" + File.separator;
}
public static void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
file.getParentFile().mkdirs();
OutputStream os = null;
InputStream is = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
is = StreamUtil.openInputStreamFromContentResolver(uri);
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
} catch(FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} finally {
StreamUtil.close(os);
StreamUtil.close(is);
}
Logging.d(Config.LOGTAG, "output file name " + file);
}
public static void copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage");
String path = getFilePath(message, uri);
message.getFileParams().setPath(path);
message.setRelativeFilePath(path); // TODO: Remove
copyFileToPrivateStorage(getFile(message), uri);
}
public static DownloadableFile compressImageAndCopyToPrivateStorage(Message message, Bitmap scaledBitmap) throws FileCopyException {
String path = getFilePath(message, "jpg");
message.getFileParams().setPath(path);
message.setRelativeFilePath(path); // TODO: Remove
DownloadableFile file = getFile(message);
file.getParentFile().mkdirs();
OutputStream os = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
boolean success = scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 75, os);
if (!success) {
throw new FileCopyException(R.string.error_compressing_image);
}
os.flush();
} catch (IOException e) {
throw new FileCopyException(R.string.error_io_exception, e);
} catch (SecurityException e) {
throw new FileCopyException(R.string.error_security_exception_during_image_copy);
} catch (NullPointerException e) {
throw new FileCopyException(R.string.error_io_exception);
} finally {
StreamUtil.close(os);
}
return file;
}
public static Uri getTakePhotoUri() {
StringBuilder pathBuilder = new StringBuilder();
pathBuilder.append(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
pathBuilder.append('/');
pathBuilder.append("Camera");
pathBuilder.append('/');
pathBuilder.append("IMG_" + imageDateFormat.format(new Date()) + ".jpg");
Uri uri = Uri.parse("file://" + pathBuilder.toString());
File file = new File(uri.toString());
file.getParentFile().mkdirs();
return uri;
}
public static Uri getJingleFileUri(Message message) {
File file = getFile(message);
return Uri.parse("file://" + file.getAbsolutePath());
}
public static boolean isFileAvailable(Message message) {
return getFile(message).exists();
}
private FileBackend() {
// Static helper class
}
}
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