namespace Htmx.ApiDemo.Templates.Components;

/// <summary>
/// shadcn-style RadioGroup.
/// Direction: flex-col | flex-row
/// </summary>
public sealed class RadioGroup : RadioGroupBase
{
    private readonly byte[] _groupLabelData;
    private readonly byte[] _directionData;
    private readonly byte[] _itemsData;

    public RadioGroup(
        string name,
        IEnumerable<(string Value, string Label, bool Selected)> options,
        string label     = "",
        string direction = "flex-col")
    {
        _groupLabelData = string.IsNullOrEmpty(label)
            ? []
            : $"""<span class="text-sm font-medium leading-none">{label}</span>""".ToUtf8Bytes();

        _directionData = direction.ToUtf8Bytes();

        var sb = new System.Text.StringBuilder();
        foreach (var (value, optLabel, selected) in options)
        {
            var optId = $"{name}-{value}";
            var sel   = selected ? " checked" : "";
            sb.Append($"""
                <label class="flex items-center gap-2 cursor-pointer text-sm">
                  <input type="radio" id="{optId}" name="{name}" value="{value}"{sel}
                         class="h-4 w-4 border border-input accent-primary
                                focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring
                                disabled:cursor-not-allowed disabled:opacity-50" />
                  {optLabel}
                </label>
                """);
        }
        _itemsData = sb.ToString().ToUtf8Bytes();
    }

    protected override void RenderGroupLabel(HtmxRenderContext ctx) => ctx.Writer.WriteUtf8(_groupLabelData);
    protected override void RenderDirection(HtmxRenderContext ctx)  => ctx.Writer.WriteUtf8(_directionData);
    protected override void RenderItems(HtmxRenderContext ctx)      => ctx.Writer.WriteUtf8(_itemsData);
}