1 files changed, 163 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
new file mode 100644
index 00000000..93b68809
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -0,0 +1,163 @@
+package eu.siacs.conversations.persistance;
+
+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.exceptions.FileCopyException;
+import de.thedevstack.conversationsplus.utils.StreamUtil;
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.R;
+import eu.siacs.conversations.entities.DownloadableFile;
+import eu.siacs.conversations.entities.Message;
+
+public class FileBackend {
+	private static final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
+
+	public static DownloadableFile getFile(Message message) {
+		return getFile(message, true);
+	}
+
+	public static DownloadableFile getFile(Message message, boolean decrypted) {
+		final boolean encrypted = !decrypted
+				&& (message.getEncryption() == Message.ENCRYPTION_PGP
+				|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
+		final DownloadableFile file;
+		String path = message.getRelativeFilePath();
+		if (path == null) {
+			path = message.getUuid();
+		}
+		if (path.startsWith("/")) {
+			file = new DownloadableFile(path);
+		} else {
+			String mime = message.getMimeType();
+			if (mime != null && mime.startsWith("image")) {
+				file = new DownloadableFile(getConversationsImageDirectory() + path);
+			} else {
+				file = new DownloadableFile(getConversationsFileDirectory() + path);
+			}
+		}
+		if (encrypted) {
+			return new DownloadableFile(getConversationsFileDirectory() + file.getName() + ".pgp");
+		} else {
+			return file;
+		}
+	}
+
+	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;
+	}
+
+    private 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 mime = ConversationsPlusApplication.getInstance().getContentResolver().getType(uri);
+		String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
+		message.setRelativeFilePath(message.getUuid() + "." + extension);
+		copyFileToPrivateStorage(getFile(message), uri);
+	}
+
+    public static DownloadableFile compressImageAndCopyToPrivateStorage(Message message, Bitmap scaledBitmap) throws FileCopyException {
+        message.setRelativeFilePath(FileBackend.getPrivateImageDirectoryPath() + message.getUuid() + ".jpg");
+        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
+    }
+}