namespace Htmx.ApiDemo.Templates.Components;

/// <summary>
/// shadcn-style Alert component.
/// Variant: default | destructive
/// </summary>
public sealed class Alert : AlertBase
{
    private static readonly Dictionary<string, string> VariantClasses = new()
    {
        ["default"]     = "relative w-full rounded-lg border border-border bg-background p-4 " +
                          "[&>svg~*]:pl-7 [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-foreground",
        ["destructive"] = "relative w-full rounded-lg border border-destructive/50 p-4 text-destructive " +
                          "[&>svg~*]:pl-7 [&>svg+div]:translate-y-[-3px] [&>svg]:absolute [&>svg]:left-4 [&>svg]:top-4 [&>svg]:text-destructive",
    };

    private readonly byte[] _classesData;
    private readonly byte[] _iconData;
    private readonly byte[] _titleData;
    private readonly byte[] _descriptionData;

    public Alert(
        string title,
        string description = "",
        string variant     = "default",
        string icon        = "")
    {
        _classesData     = VariantClasses.GetValueOrDefault(variant, VariantClasses["default"]).ToUtf8Bytes();
        _iconData        = icon.ToUtf8Bytes();
        _titleData       = $"""<h5 class="mb-1 font-medium leading-none tracking-tight">{title}</h5>""".ToUtf8Bytes();
        _descriptionData = string.IsNullOrEmpty(description)
            ? []
            : $"""<div class="text-sm [&_p]:leading-relaxed">{description}</div>""".ToUtf8Bytes();
    }

    protected override void RenderClasses(HtmxRenderContext ctx)     => ctx.Writer.WriteUtf8(_classesData);
    protected override void RenderIcon(HtmxRenderContext ctx)        => ctx.Writer.WriteUtf8(_iconData);
    protected override void RenderTitle(HtmxRenderContext ctx)       => ctx.Writer.WriteUtf8(_titleData);
    protected override void RenderDescription(HtmxRenderContext ctx) => ctx.Writer.WriteUtf8(_descriptionData);
}