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package de.danoeh.antennapod.asynctask;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import de.danoeh.antennapod.core.R;
import de.danoeh.antennapod.core.opml.OpmlWriter;
import de.danoeh.antennapod.core.preferences.UserPreferences;
import de.danoeh.antennapod.core.storage.DBReader;
import de.danoeh.antennapod.core.util.LangUtils;
/**
* Writes an OPML file into the export directory in the background.
*/
public class OpmlExportWorker extends AsyncTask<Void, Void, Void> {
private static final String TAG = "OpmlExportWorker";
private static final String DEFAULT_OUTPUT_NAME = "antennapod-feeds.opml";
public static final String EXPORT_DIR = "export/";
private Context context;
private File output;
private ProgressDialog progDialog;
private Exception exception;
public OpmlExportWorker(Context context, File output) {
this.context = context;
this.output = output;
}
public OpmlExportWorker(Context context) {
this.context = context;
}
@Override
protected Void doInBackground(Void... params) {
OpmlWriter opmlWriter = new OpmlWriter();
if (output == null) {
output = new File(
UserPreferences.getDataFolder(context, EXPORT_DIR),
DEFAULT_OUTPUT_NAME);
if (output.exists()) {
Log.w(TAG, "Overwriting previously exported file.");
output.delete();
}
}
OutputStreamWriter writer = null;
try {
writer = new OutputStreamWriter(new FileOutputStream(output), LangUtils.UTF_8);
opmlWriter.writeDocument(DBReader.getFeedList(context), writer);
} catch (IOException e) {
e.printStackTrace();
exception = e;
} finally {
if (writer != null) {
try {
writer.close();
} catch (IOException ioe) {
exception = ioe;
}
}
}
return null;
}
@Override
protected void onPostExecute(Void result) {
progDialog.dismiss();
AlertDialog.Builder alert = new AlertDialog.Builder(context)
.setNeutralButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
});
if (exception != null) {
alert.setTitle(R.string.export_error_label);
alert.setMessage(exception.getMessage());
} else {
alert.setTitle(R.string.opml_export_success_title);
alert.setMessage(context
.getString(R.string.opml_export_success_sum)
+ output.toString());
}
alert.create().show();
}
@Override
protected void onPreExecute() {
progDialog = new ProgressDialog(context);
progDialog.setMessage(context.getString(R.string.exporting_label));
progDialog.setIndeterminate(true);
progDialog.show();
}
@SuppressLint("NewApi")
public void executeAsync() {
if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
executeOnExecutor(THREAD_POOL_EXECUTOR);
} else {
execute();
}
}
}
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