update

ui/lib/utils/bytes.dart

@@ -0,0 +1,30 @@
+extension BytesFormat on num {
+  /// method returns a human readable string representing a file size
+  /// size can be passed as number or as string
+  /// the optional parameter 'round' specifies the number of numbers after comma/point (default is 2)
+  /// the optional boolean parameter 'useBase1024' specifies if we should count in 1024's (true) or 1000's (false). e.g. 1KB = 1024B (default is true)
+  String bytesFormat({int round = 2, bool useBase1024 = true}) {
+    const List<String> affixes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
+
+    num divider = useBase1024 ? 1024 : 1000;
+
+    num size = this;
+    num runningDivider = divider;
+    num runningPreviousDivider = 0;
+    int affix = 0;
+
+    while (size >= runningDivider && affix < affixes.length - 1) {
+      runningPreviousDivider = runningDivider;
+      runningDivider *= divider;
+      affix++;
+    }
+
+    String result =
+        (runningPreviousDivider == 0 ? size : size / runningPreviousDivider).toStringAsFixed(round);
+
+    //Check if the result ends with .00000 (depending on how many decimals) and remove it if found.
+    if (result.endsWith("0" * round)) result = result.substring(0, result.length - round - 1);
+
+    return "$result ${affixes[affix]}";
+  }
+}