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package it.niedermann.nextcloud.deck;
import android.content.Context;
import android.content.Intent;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.FileProvider;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.time.Instant;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import it.niedermann.nextcloud.deck.util.MimeTypeUtil;
public class DeckLog {
private DeckLog() {
throw new UnsupportedOperationException("This class must not get instantiated");
}
private static final StringBuffer DEBUG_LOG = new StringBuffer();
private static boolean PERSIST_LOGS = false;
private static final String TAG = DeckLog.class.getSimpleName();
private static final DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
public static void enablePersistentLogs(boolean persistLogs) {
PERSIST_LOGS = persistLogs;
if (!persistLogs) {
clearDebugLog();
}
}
public enum Severity {
VERBOSE, DEBUG, LOG, INFO, WARN, ERROR
}
public static void verbose(Object... message) {
log(Severity.VERBOSE, 4, message);
}
public static void log(Object... message) {
log(Severity.DEBUG, 4, message);
}
public static void info(Object... message) {
log(Severity.INFO, 4, message);
}
public static void warn(Object... message) {
log(Severity.WARN, 4, message);
}
public static void error(Object... message) {
log(Severity.ERROR, 4, message);
}
public static void log(@NonNull Severity severity, Object... message) {
log(severity, 3, message);
}
private static void log(@NonNull Severity severity, int stackTracePosition, Object... messages) {
if (!(PERSIST_LOGS || BuildConfig.DEBUG)) {
return;
}
final StackTraceElement caller = Thread.currentThread().getStackTrace()[stackTracePosition];
final String print = "(" + caller.getFileName() + ":" + caller.getLineNumber() + ") " + caller.getMethodName() + "() → " + TextUtils.join(" ", messages);
if (PERSIST_LOGS) {
DEBUG_LOG
.append(dtf.format(Instant.now().atZone(ZoneId.systemDefault())))
.append(" ")
.append(severity.name())
.append(" ")
.append(print)
.append("\n");
}
switch (severity) {
case DEBUG:
Log.d(TAG, print);
break;
case INFO:
Log.i(TAG, print);
break;
case WARN:
Log.w(TAG, print);
break;
case ERROR:
Log.e(TAG, print);
break;
default:
Log.v(TAG, print);
break;
}
}
public static void logError(@Nullable Throwable e) {
if (!(PERSIST_LOGS || BuildConfig.DEBUG)) {
return;
}
if (e == null) {
error("Could not log error because given error was null");
return;
}
final StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
final String stacktrace = sw.toString();
final StackTraceElement caller = Thread.currentThread().getStackTrace()[3];
final String print = "(" + caller.getFileName() + ":" + caller.getLineNumber() + ") " + caller.getMethodName() + "() → " + stacktrace;
if (PERSIST_LOGS) {
DEBUG_LOG.append(print).append("\n");
}
Log.e(TAG, print);
}
@NonNull
public static String getDebugLog() {
return DEBUG_LOG.toString();
}
public static void clearDebugLog() {
DEBUG_LOG.setLength(0);
}
/**
* Writes the current log to a temporary file and starts a share intent.
*/
public static void shareLogAsFile(@NonNull Context context) throws IOException {
Toast.makeText(context, R.string.copying_logs_to_file, Toast.LENGTH_LONG).show();
final File logFile = new File(context.getCacheDir().getAbsolutePath() + "/log.txt");
final FileWriter writer = new FileWriter(logFile);
writer.write(DeckLog.getDebugLog());
writer.close();
context.startActivity(new Intent(Intent.ACTION_SEND)
.putExtra(Intent.EXTRA_TITLE, context.getString(R.string.log_file))
.putExtra(Intent.EXTRA_STREAM, FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".provider", logFile))
.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
.setType(MimeTypeUtil.TEXT_PLAIN));
}
}
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