Initial version

DataTransfer.Client/Services/DisplayFormat.cs

@@ -0,0 +1,32 @@
+using System.Globalization;
+
+namespace DataTransfer.Client.Services;
+
+public static class DisplayFormat
+{
+    public static string Bytes(long bytes) => bytes switch
+    {
+        >= 1024L * 1024 * 1024 => string.Create(CultureInfo.InvariantCulture, $"{bytes / 1024d / 1024d / 1024d:0.#} GB"),
+        >= 1024 * 1024 => string.Create(CultureInfo.InvariantCulture, $"{bytes / 1024d / 1024d:0.0} MB"),
+        >= 1024 => string.Create(CultureInfo.InvariantCulture, $"{bytes / 1024d:0.0} KB"),
+        _ => $"{bytes} B"
+    };
+
+    public static string Duration(TimeSpan duration) =>
+        duration switch
+        {
+            { TotalHours: >= 1, Minutes: 0, Seconds: 0 } => string.Create(CultureInfo.InvariantCulture, $"{duration.TotalHours:0} h"),
+            { TotalMinutes: >= 1, Seconds: 0 } => string.Create(CultureInfo.InvariantCulture, $"{duration.TotalMinutes:0} min"),
+            _ => string.Create(CultureInfo.InvariantCulture, $"{duration.TotalSeconds:0} s")
+        };
+
+    public static string Countdown(TimeSpan remaining)
+    {
+        if (remaining < TimeSpan.Zero)
+        {
+            remaining = TimeSpan.Zero;
+        }
+
+        return remaining.ToString(remaining.TotalHours >= 1 ? @"h\:mm\:ss" : @"mm\:ss", CultureInfo.InvariantCulture);
+    }
+}