<script lang="ts">
  type Variant = 'default' | 'primary' | 'accent' | 'inactive' | 'date';

  let {
    label = '',
    variant = 'default',
    href = null as string | null,
    active = false,
    onclick = null as (() => void) | null,
  } = $props();

  const baseClass =
    'inline-flex shrink-0 whitespace-nowrap rounded-full py-1 px-2.5 text-[0.6875rem] font-medium transition-all ring-1 no-underline focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-offset-1';

  const variantClasses = $derived(
    {
      default: 'bg-stein-0 text-stein-800 ring-stein-200 hover:bg-stein-50',
      primary: 'bg-wald-500 text-white ring-wald-600/30 hover:bg-wald-600',
      accent: 'bg-himmel-400 text-white ring-himmel-500/30 hover:bg-himmel-500',
      inactive: 'bg-stein-100 text-stein-500 ring-stein-200',
      date: 'bg-wald-600 text-white ring-wald-700/40',
    }[variant]
  );

  const shadowClass = $derived(
    href || onclick
      ? variant === 'date'
        ? 'shadow-[0_0_6px_rgba(0,0,0,0.25)]'
        : 'shadow-[0_2px_6px_rgba(0,0,0,0.12)]'
      : ''
  );

  const classes = $derived(
    `${baseClass} ${variantClasses} ${shadowClass} ${active ? 'pointer-events-none ring-2' : ''}`
  );
</script>

{#if href}
  <a
    href={href}
    class={classes}
    aria-current={active ? 'true' : undefined}
  >
    {label}
  </a>
{:else if onclick}
  <button
    type="button"
    class={classes}
    aria-current={active ? 'true' : undefined}
    onclick={onclick}
  >
    {label}
  </button>
{:else}
  <span class={classes}>{label}</span>
{/if}
