using Avalonia;
using Avalonia.Controls;
using Avalonia.Media;
using System.Globalization;

namespace YZWater.Avalonia.Controls;

public class StatusCard : Control
{
    public static readonly StyledProperty<string> TitleProperty = AvaloniaProperty.Register<StatusCard, string>(nameof(Title), "Device");
    public static readonly StyledProperty<string> StatusProperty = AvaloniaProperty.Register<StatusCard, string>(nameof(Status), "RUNNING");
    public static readonly StyledProperty<string> IconProperty = AvaloniaProperty.Register<StatusCard, string>(nameof(Icon), "P1");
    public static readonly StyledProperty<bool> IsActiveProperty = AvaloniaProperty.Register<StatusCard, bool>(nameof(IsActive), false);
    public static readonly StyledProperty<IBrush> ActiveColorProperty = AvaloniaProperty.Register<StatusCard, IBrush>(nameof(ActiveColor));
    public static readonly StyledProperty<IBrush> InactiveColorProperty = AvaloniaProperty.Register<StatusCard, IBrush>(nameof(InactiveColor));

    public string Title { get => GetValue(TitleProperty); set => SetValue(TitleProperty, value); }
    public string Status { get => GetValue(StatusProperty); set => SetValue(StatusProperty, value); }
    public string Icon { get => GetValue(IconProperty); set => SetValue(IconProperty, value); }
    public bool IsActive { get => GetValue(IsActiveProperty); set => SetValue(IsActiveProperty, value); }
    public IBrush ActiveColor { get => GetValue(ActiveColorProperty); set => SetValue(ActiveColorProperty, value); }
    public IBrush InactiveColor { get => GetValue(InactiveColorProperty); set => SetValue(InactiveColorProperty, value); }

    static StatusCard() { AffectsRender<StatusCard>(TitleProperty, StatusProperty, IconProperty, IsActiveProperty, ActiveColorProperty, InactiveColorProperty); }

    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e) { base.OnAttachedToVisualTree(e); ThemeHelper.ThemeChanged += OnThemeChanged; }
    protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e) { ThemeHelper.ThemeChanged -= OnThemeChanged; base.OnDetachedFromVisualTree(e); }
    private void OnThemeChanged() => InvalidateVisual();

    private static readonly Typeface s_monoTypeface = new("Consolas, monospace");
    private static readonly Typeface s_labelTypeface = new("Microsoft YaHei");

    public override void Render(DrawingContext context)
    {
        base.Render(context);
        var bounds = new Rect(Bounds.Size);
        var statusColor = IsActive ? (ActiveColor ?? ThemeHelper.Success) : (InactiveColor ?? ThemeHelper.TextDisabled);
        var statusBrush = statusColor as SolidColorBrush;
        var statusColorValue = statusBrush?.Color ?? Colors.Gray;

        context.DrawRectangle(ThemeHelper.PanelBg, null, bounds);
        context.DrawRectangle(statusColor, null, new Rect(0, 0, 3, bounds.Height));

        var ledX = 12.0; var ledY = bounds.Height / 2 - 5;
        if (IsActive) context.DrawEllipse(new SolidColorBrush(statusColorValue, 0.3), null, new Rect(ledX - 3, ledY - 3, 16, 16));
        context.DrawEllipse(statusColor, null, new Rect(ledX, ledY, 10, 10));

        var iconText = new FormattedText(Icon, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, s_monoTypeface, 11, ThemeHelper.TextPrimary);
        context.DrawText(iconText, new Point(28, 6));

        var titleText = new FormattedText(Title, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, s_labelTypeface, 10, ThemeHelper.TextSecondary);
        context.DrawText(titleText, new Point(28, 22));

        var statusText = new FormattedText(Status, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, s_monoTypeface, 9, statusColor);
        context.DrawText(statusText, new Point(bounds.Width - statusText.Width - 10, bounds.Height / 2 - statusText.Height / 2));
    }

    protected override Size MeasureOverride(Size availableSize) => new Size(230, 42);
}