namespace Htmx.ApiDemo.Templates.Components;

/// <summary>
/// CSS-only Tooltip using group-hover. Wraps a trigger element.
/// Position: "top" | "bottom" | "left" | "right" (default: top)
/// </summary>
public sealed class Tooltip : TooltipBase
{
    private static readonly Dictionary<string, string> PositionClasses = new()
    {
        ["top"]    = "bottom-full left-1/2 -translate-x-1/2 mb-2",
        ["bottom"] = "top-full left-1/2 -translate-x-1/2 mt-2",
        ["left"]   = "right-full top-1/2 -translate-y-1/2 mr-2",
        ["right"]  = "left-full top-1/2 -translate-y-1/2 ml-2",
    };

    private readonly byte[] _triggerData;
    private readonly byte[] _textData;
    private readonly byte[] _positionData;

    public Tooltip(string text, IHtmxComponent trigger, string position = "top")
    {
        _textData     = text.ToUtf8Bytes();
        _positionData = PositionClasses.GetValueOrDefault(position, PositionClasses["top"]).ToUtf8Bytes();

        var bufferWriter = new System.IO.Pipelines.Pipe().Writer;
        // Render trigger to bytes via a simple ArrayBufferWriter
        var writer = new System.Buffers.ArrayBufferWriter<byte>();
        trigger.Render(new HtmxRenderContext(writer));
        _triggerData = writer.WrittenSpan.ToArray();
    }

    protected override void RenderTrigger(HtmxRenderContext ctx)  => ctx.Writer.WriteUtf8(_triggerData);
    protected override void RenderText(HtmxRenderContext ctx)     => ctx.Writer.WriteUtf8(_textData);
    protected override void RenderPosition(HtmxRenderContext ctx) => ctx.Writer.WriteUtf8(_positionData);
}