@using System.Globalization
@inherits DComponentBase

@* daisyUI Radial progress: https://daisyui.com/components/radial-progress/ . Value/Max becomes a 0-100 percentage in
   the --value style variable and aria-valuenow, and the default text; Diameter and Thickness set --size and
   --thickness. A consumer's style is appended to those. It is drawn in currentColor, so Color maps to text-*. *@
<div @attributes="AdditionalAttributes" class="@CssClass" style="@StyleValue" role="progressbar"
	 aria-valuenow="@PercentText" aria-valuemin="0" aria-valuemax="100">
	@if (ChildContent is null)
	{
		@($"{Math.Round(Percent)}%")
	}
	else
	{
		@ChildContent
	}
</div>

@code {
	[Parameter] public double Value { get; set; }
	[Parameter] public double Max { get; set; } = 100;
	[Parameter] public DColor Color { get; set; }
	/// <summary>A CSS length for --size (daisyUI's default is 5rem).</summary>
	[Parameter] public string Diameter { get; set; }
	/// <summary>A CSS length for --thickness (daisyUI's default is a tenth of the size).</summary>
	[Parameter] public string Thickness { get; set; }
	/// <summary>Replaces the default "NN%" text.</summary>
	[Parameter] public RenderFragment ChildContent { get; set; }

	double Percent => Max > 0 ? Math.Clamp(Value / Max * 100, 0, 100) : 0;

	string PercentText => Math.Round(Percent, 2).ToString(CultureInfo.InvariantCulture);

	string StyleValue
	{
		get
		{
			var style = $"--value:{PercentText};";
			if (!string.IsNullOrEmpty(Diameter))
				style += $" --size:{Diameter};";
			if (!string.IsNullOrEmpty(Thickness))
				style += $" --thickness:{Thickness};";
			if (AdditionalAttributes != null && AdditionalAttributes.TryGetValue("style", out var extra) && extra is not null)
				style += " " + extra;
			return style;
		}
	}

	string CssClass => Cx("radial-progress", ColorClass, Class);

	string ColorClass => Color switch
	{
		DColor.Neutral => "text-neutral",
		DColor.Primary => "text-primary",
		DColor.Secondary => "text-secondary",
		DColor.Accent => "text-accent",
		DColor.Info => "text-info",
		DColor.Success => "text-success",
		DColor.Warning => "text-warning",
		DColor.Error => "text-error",
		_ => null
	};
}