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package org.altusmetrum.AltosDroid;
import org.altusmetrum.altoslib_6.*;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Environment;
import android.util.Log;
public class TelemetryLogger {
private static final String TAG = "TelemetryLogger";
private static final boolean D = true;
private Context context = null;
private AltosLink link = null;
private AltosLog logger = null;
private BroadcastReceiver mExternalStorageReceiver;
public TelemetryLogger(Context in_context, AltosLink in_link) {
context = in_context;
link = in_link;
startWatchingExternalStorage();
}
public void stop() {
stopWatchingExternalStorage();
close();
}
private void close() {
if (logger != null) {
if (D) Log.d(TAG, "Shutting down Telemetry Logging");
logger.close();
logger = null;
}
}
void handleExternalStorageState() {
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
if (logger == null) {
if (D) Log.d(TAG, "Starting up Telemetry Logging");
logger = new AltosLog(link);
}
} else {
if (D) Log.d(TAG, "External Storage not present - stopping");
close();
}
}
void startWatchingExternalStorage() {
mExternalStorageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
handleExternalStorageState();
}
};
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
filter.addAction(Intent.ACTION_MEDIA_REMOVED);
context.registerReceiver(mExternalStorageReceiver, filter);
handleExternalStorageState();
}
void stopWatchingExternalStorage() {
context.unregisterReceiver(mExternalStorageReceiver);
}
}
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