Source Code added

mobile/lib/utils/backup_progress.dart

@@ -0,0 +1,83 @@
+import 'dart:async';
+import 'dart:developer';
+
+import 'package:easy_localization/easy_localization.dart';
+
+final NumberFormat numberFormat = NumberFormat("###0.##");
+
+String formatAssetBackupProgress(int uploadedAssets, int assetsToUpload) {
+  final int percent = (uploadedAssets * 100) ~/ assetsToUpload;
+  return "$percent% ($uploadedAssets/$assetsToUpload)";
+}
+
+/// prints progress in useful (kilo/mega/giga)bytes
+String humanReadableFileBytesProgress(int bytes, int bytesTotal) {
+  String unit = "KB";
+
+  if (bytesTotal >= 0x40000000) {
+    unit = "GB";
+    bytes >>= 20;
+    bytesTotal >>= 20;
+  } else if (bytesTotal >= 0x100000) {
+    unit = "MB";
+    bytes >>= 10;
+    bytesTotal >>= 10;
+  } else if (bytesTotal < 0x400) {
+    return "${(bytes).toStringAsFixed(2)} B / ${(bytesTotal).toStringAsFixed(2)} B";
+  }
+
+  return "${(bytes / 1024.0).toStringAsFixed(2)} $unit / ${(bytesTotal / 1024.0).toStringAsFixed(2)} $unit";
+}
+
+/// prints percentage and absolute progress in useful (kilo/mega/giga)bytes
+String humanReadableBytesProgress(int bytes, int bytesTotal) {
+  String unit = "KB"; // Kilobyte
+  if (bytesTotal >= 0x40000000) {
+    unit = "GB"; // Gigabyte
+    bytes >>= 20;
+    bytesTotal >>= 20;
+  } else if (bytesTotal >= 0x100000) {
+    unit = "MB"; // Megabyte
+    bytes >>= 10;
+    bytesTotal >>= 10;
+  } else if (bytesTotal < 0x400) {
+    return "$bytes / $bytesTotal B";
+  }
+  final int percent = (bytes * 100) ~/ bytesTotal;
+  final String done = numberFormat.format(bytes / 1024.0);
+  final String total = numberFormat.format(bytesTotal / 1024.0);
+  return "$percent% ($done/$total$unit)";
+}
+
+class ThrottleProgressUpdate {
+  ThrottleProgressUpdate(this._fun, Duration interval) : _interval = interval.inMicroseconds;
+  final void Function(String?, int, int) _fun;
+  final int _interval;
+  int _invokedAt = 0;
+  Timer? _timer;
+
+  String? title;
+  int progress = 0;
+  int total = 0;
+
+  void call({final String? title, final int progress = 0, final int total = 0}) {
+    final time = Timeline.now;
+    this.title = title ?? this.title;
+    this.progress = progress;
+    this.total = total;
+    if (time > _invokedAt + _interval) {
+      _timer?.cancel();
+      _onTimeElapsed();
+    } else {
+      _timer ??= Timer(Duration(microseconds: _interval), _onTimeElapsed);
+    }
+  }
+
+  void _onTimeElapsed() {
+    _invokedAt = Timeline.now;
+    _fun(title, progress, total);
+    _timer = null;
+    // clear title to not send/overwrite it next time if unchanged
+    title = null;
+  }
+}