1 files changed, 46 insertions, 0 deletions
diff --git a/LibBeatmapDownload/DomainStats.cs b/LibBeatmapDownload/DomainStats.cs
new file mode 100644
index 0000000..a026b7d
--- /dev/null
+++ b/LibBeatmapDownload/DomainStats.cs
@@ -0,0 +1,46 @@
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+
+namespace LibBeatmapDownload;
+
+public class DomainStats(string url) : INotifyPropertyChanged {
+	public string Domain { get; } = new Uri(url).Host;
+
+	private int _total = 0;
+
+	public int Total => Success + Failed;
+
+	private int _success = 0;
+
+	public int Success {
+		get => _success;
+		set => SetField(ref _success, value);
+	}
+
+	private int _failed = 0;
+
+	public int Failed {
+		get => _failed;
+		set => SetField(ref _failed, value);
+	}
+
+	public double Progress => Total == 0 ? 100 : (double)Success / Total * 100;
+	public string ProgressString => $"{Domain} {Progress/100:P0} ({Failed}/{Total} failed)";
+
+	public event PropertyChangedEventHandler? PropertyChanged;
+
+	private readonly Stopwatch sw = Stopwatch.StartNew();
+	protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null) {
+		PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+		PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Progress)));
+		PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(ProgressString)));
+	}
+
+	protected bool SetField<T>(ref T field, T value, [CallerMemberName] string? propertyName = null) {
+		if (EqualityComparer<T>.Default.Equals(field, value)) return false;
+		field = value;
+		OnPropertyChanged(propertyName);
+		return true;
+	}
+}