namespace Htmx.ApiDemo.Templates.Components;

/// <summary>
/// shadcn-style Select (native HTML select) component.
/// </summary>
public sealed class Select : SelectBase
{
    private readonly byte[] _idData;
    private readonly byte[] _nameData;
    private readonly byte[] _labelData;
    private readonly byte[] _descriptionData;
    private readonly byte[] _optionsData;
    private readonly byte[] _extraClassesData;
    private readonly byte[] _hxAttrsData;

    /// <param name="options">Collection of (value, display) tuples. Mark selected with selectedValue.</param>
    public Select(
        string id,
        IEnumerable<(string Value, string Display)> options,
        string selectedValue  = "",
        string name           = "",
        string label          = "",
        string description    = "",
        string extraClasses   = "",
        string hxAttrs        = "")
    {
        _idData           = id.ToUtf8Bytes();
        _nameData         = (string.IsNullOrEmpty(name) ? id : name).ToUtf8Bytes();
        _extraClassesData = extraClasses.ToUtf8Bytes();
        _hxAttrsData      = hxAttrs.ToUtf8Bytes();

        _labelData = string.IsNullOrEmpty(label)
            ? []
            : $"""<label for="{id}" class="text-sm font-medium leading-none">{label}</label>""".ToUtf8Bytes();

        _descriptionData = string.IsNullOrEmpty(description)
            ? []
            : $"""<p class="text-xs text-muted-foreground">{description}</p>""".ToUtf8Bytes();

        var sb = new System.Text.StringBuilder();
        foreach (var (value, display) in options)
        {
            var selected = value == selectedValue ? " selected" : "";
            sb.Append($"""<option value="{value}"{selected}>{display}</option>""");
        }
        _optionsData = sb.ToString().ToUtf8Bytes();
    }

    protected override void RenderId(HtmxRenderContext ctx)           => ctx.Writer.WriteUtf8(_idData);
    protected override void RenderName(HtmxRenderContext ctx)         => ctx.Writer.WriteUtf8(_nameData);
    protected override void RenderLabel(HtmxRenderContext ctx)        => ctx.Writer.WriteUtf8(_labelData);
    protected override void RenderDescription(HtmxRenderContext ctx)  => ctx.Writer.WriteUtf8(_descriptionData);
    protected override void RenderOptions(HtmxRenderContext ctx)      => ctx.Writer.WriteUtf8(_optionsData);
    protected override void RenderExtraClasses(HtmxRenderContext ctx) => ctx.Writer.WriteUtf8(_extraClassesData);
    protected override void RenderHxAttrs(HtmxRenderContext ctx)      => ctx.Writer.WriteUtf8(_hxAttrsData);
}